CN111796784A - Screen projection method, electronic device and screen projection terminal - Google Patents

Abstract

Embodiments of the present invention provide a screen projection method, an electronic device, and a screen projection terminal, wherein the above screen projection method, applied to an electronic device, includes: determining N screen projection terminals associated with the electronic device, where N is greater than or equal to Integer of 1; in the case of receiving the first input for screencasting the content displayed by the electronic device, display N terminal identifiers on the electronic device, the N terminal identifiers and the The N screencasting terminals are in one-to-one correspondence; when a selection operation for at least one first terminal identifier among the N terminal identifiers is received, all screencasting terminals corresponding to the at least one first terminal identifier are determined. is a target screen projection terminal, and the first terminal identifier is any terminal identifier among the N terminal identifiers; the content displayed by the electronic device is sent to the target screen projection terminal for display. The embodiments of the present invention can effectively reduce the complexity of operations in the process of screen projection.

Description

Screen projection method, electronic device and screen projection terminal

technical field

The present invention relates to the technical field of information processing, and in particular, to a screen projection method, an electronic device and a screen projection terminal.

Background technique

As we all know, in application scenarios such as teaching and conferences, there is usually a need for screen projection, so that the content displayed in the electronic device operated by the user is displayed through the screen projection terminal, so that others can watch it easily. In some application scenarios, such as the teaching process, it may be necessary to project the teaching materials in the electronic device to the screen projection terminals in several specific classrooms according to different course arrangements; while in the prior art, the electronic device and the projection screen The association relationship of terminals is relatively fixed. When establishing an association relationship between an electronic device and a few specific screen projection terminals, it is often necessary to operate each screen projection terminal separately (such as adjustment of physical interface connection relationship, re-selection of signal sources, etc. ), which makes the screen projection process more complicated.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a screen projection method, an electronic device, and a screen projection terminal, so as to solve the problem that the operation of the screen projection process is relatively complicated in the prior art.

In order to solve the above-mentioned technical problems, the present invention is achieved in this way:

In a first aspect, an embodiment of the present invention provides a screen projection method, which is applied to an electronic device, and the method includes:

Determine N screen projection terminals associated with the electronic device, where N is an integer greater than 1;

In the case of receiving the first input for screencasting the content displayed by the electronic device, display N terminal identifiers on the electronic device, the N terminal identifiers and the N screencasting One-to-one correspondence between terminals;

In the case of receiving a selection operation for at least one first terminal identifier among the N terminal identifiers, all screen projection terminals corresponding to the at least one first terminal identifier are determined as target screen projection terminals, and the first terminal identifier is determined as the target screen projection terminal. A terminal identifier is any terminal identifier in the N terminal identifiers;

Send the content displayed by the electronic device to the target screen projection terminal for display.

In a second aspect, an embodiment of the present invention further provides a screen projection method, which is applied to the first screen projection terminal, including:

Determine the electronic device associated with the first screen-casting terminal, wherein the electronic device is associated with N screen-casting terminals, and the first screen-casting terminal is any one of the N screen-casting terminals , the electronic device is configured to display the terminal identifier corresponding to the first screen-casting terminal in the case of receiving the first input for screencasting the content displayed by the electronic device, and after receiving the screencasting In the case of the selection operation of the terminal identifier corresponding to the first screen-casting terminal, the content displayed by the electronic device is sent to the first screen-casting terminal, where N is an integer greater than 1;

Display the content displayed by the electronic device.

In a third aspect, an embodiment of the present invention also provides an electronic device, including:

a first determination module, configured to determine N screen projection terminals associated with the electronic device, where N is an integer greater than 1;

a first display module, configured to display N terminal identifiers on the electronic device in the case of receiving a first input for screencasting the content displayed by the electronic device, the N terminal identifiers One-to-one correspondence with the N screen projection terminals;

A second determining module, configured to determine all screen-casting terminals corresponding to the at least one first terminal identifier as targets when a selection operation for at least one first terminal identifier among the N terminal identifiers is received a screen-casting terminal, where the first terminal identifier is any terminal identifier among the N terminal identifiers;

The second display module is configured to send the content displayed by the electronic device to the target screen projection terminal for display.

In a fourth aspect, an embodiment of the present invention further provides a first screen projection terminal, which is characterized by comprising:

A third determining module, configured to determine an electronic device associated with the first screen projection terminal, wherein the electronic device is associated with N screen projection terminals, and the first screen projection terminal is the N screen projection terminals Any one of the screen-casting terminals, the electronic device is configured to display a terminal corresponding to the first screen-casting terminal in the case of receiving a first input for performing screen-casting on the content displayed by the electronic device ID, and in the case of receiving the selection operation for the terminal ID corresponding to the first screen projection terminal, send the content displayed by the electronic device to the first screen projection terminal, N is an integer greater than 1 ;

The third display module is used for displaying the content displayed by the electronic device.

In a fifth aspect, an embodiment of the present invention further provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program The above-mentioned screen projection method applied to an electronic device is implemented.

In a sixth aspect, an embodiment of the present invention further provides a screen projection terminal, including a memory, a processor, and a computer program stored in the memory and running on the processor, the processor executing the computer During the program, the above-mentioned screen projection method applied to the first screen projection terminal is implemented.

In a seventh aspect, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the above-mentioned screen projection method applied to an electronic device is implemented , or implement the above-mentioned screen projection method applied to the first screen projection terminal.

In the screen projection method provided by the embodiment of the present invention, when the electronic device receives the first input for controlling the screen projection, the electronic device can assign multiple terminal identifiers respectively corresponding to the determined multiple screen projection terminals associated with the electronic device. display, and based on the selection operation of at least one first terminal identifier among the multiple terminal identifiers, determine a target screen projection terminal that can be used to receive and display the content displayed by the electronic device; thus, it is avoided to perform a separate screen projection terminal for each screen projection terminal. operation to complete the process of associating the electronic device with a specific screen projection terminal, effectively reducing the complexity of the operation in the screen projection process.

Description of drawings

FIG. 1 is a flowchart of a screen projection method applied to an electronic device provided by an embodiment of the present invention;

FIG. 2 is a flowchart of a screen projection method applied to a first screen projection terminal according to an embodiment of the present invention;

3 is a schematic structural diagram of an electronic device provided by an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a first screen projection terminal according to an embodiment of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, the following will be described in detail with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided merely to assist in a comprehensive understanding of embodiments of the present invention. Accordingly, it should be apparent to those skilled in the art that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

Unless otherwise defined, technical or scientific terms used in the present invention should have the ordinary meaning as understood by those of ordinary skill in the art to which the present invention belongs. The terms "first," "second," and similar terms used herein do not denote any order, quantity, or importance, but are merely used to distinguish different components. Likewise, "a" or "an" and the like do not denote a quantitative limitation, but rather denote the presence of at least one.

The screen projection method provided by the embodiment of the present invention is applied to an electronic device. As shown in FIG. 1 , the method includes:

Step 101: Determine N screen projection terminals associated with the electronic device, where N is an integer greater than 1;

Step 102: In the case of receiving the first input for screencasting the content displayed by the electronic device, display N terminal identifiers on the electronic device, and the N terminal identifiers are related to the N terminal identifiers. One-to-one correspondence between each projection terminal;

Step 103: In the case of receiving a selection operation for at least one first terminal identifier among the N terminal identifiers, determine all screen-casting terminals corresponding to the at least one first terminal identifier as target screen-casting terminals, The first terminal identifier is any terminal identifier in the N terminal identifiers;

Step 104: Send the content displayed by the electronic device to the target screen projection terminal for display.

In this embodiment, a screen-casting terminal associated with an electronic device mainly refers to a screen-casting terminal that can realize screen-casting and display of the content displayed by the electronic device, for example, a screen-casting terminal connected to the same WiFi as the electronic device, or A screen projection terminal connected to an electronic device through a physical interface, etc., is not limited here, as long as it can realize screen projection. It can be understood that the number of the above-mentioned screen-casting terminals associated with the electronic device may be multiple, and the content displayed by the electronic device can be selected to be screen-cast to all or part of the multiple screen-casting terminals during screen-casting. middle.

When the electronic device receives the user's first input, the user can freely select a screen projection terminal for performing screen projection display. Specifically, the above-mentioned first input is an input that can be used to perform screen projection on the content displayed on the electronic device, for example, a user's touch operation on a screen projection control displayed on the electronic device, or a user's touch operation on a screen projection control displayed on the electronic device. The click operation of the physical button of the screen projection, etc.; and the content displayed by the electronic device can be documents, pictures, videos, web pages, or the content obtained by scanning based on the scanning device included in the electronic device, etc. No specific restrictions are made here. .

In the case of receiving the first input, multiple terminal identifiers may be displayed on the electronic device, and each terminal identifier may respectively correspond to a screen projection terminal associated with the electronic device. At this time, the user may select the above-mentioned multiple terminal identifiers, for example, perform a touch operation on selection controls corresponding to all or part of the terminal identifiers. The selected terminal identifier is defined as the first terminal identifier. In the selection operation, the user may select one first terminal identifier or multiple first terminal identifiers; the electronic device may determine the above-mentioned first terminal identifier as the target A screen projection terminal, that is, a screen projection terminal that needs to perform screen projection display of the content displayed by the electronic device. After the target screen projection terminal is determined, the content displayed by the electronic device can be sent to the target screen projection terminal, so that the target screen projection terminal can display the corresponding display content and complete the process of screen projection.

In the screen projection method provided by the embodiment of the present invention, when the electronic device receives the first input for controlling the screen projection, the electronic device can assign multiple terminal identifiers respectively corresponding to the determined multiple screen projection terminals associated with the electronic device. display, and based on the selection operation of at least one first terminal identifier among the multiple terminal identifiers, determine a target screen projection terminal that can be used to receive and display the content displayed by the electronic device; thus, it is avoided to perform a separate screen projection terminal for each screen projection terminal. operation to complete the process of associating an electronic device with a specific screen-casting terminal, effectively reducing the complexity of the operation during the screen-casting process, improving the convenience of selecting the target screen-casting terminal, and improving the user experience.

The screen projection method provided by the embodiment of the present invention is described below with reference to a specific application scenario. In teaching applications, there may be multiple classrooms, and each classroom is equipped with a screen projection terminal, such as a projector or a rear-projection TV; the electronic device can be a mobile terminal carried by a teacher, or a certain classroom The podium terminal configured in the electronic device; if it is determined that there are three screen projection terminals associated with the amphitheatre for the electronic device, then when the first input is received, "amphitheatre T1", "amphitheatre T1", "amphitheatre T1", "amphitheatre The three terminal identifiers "T2" and "T3" respectively correspond to the above-mentioned three screen projection terminals of the amphitheatre. When the user selects the two terminal identifiers "ladder classroom T1" and "ladder classroom T2", the content displayed on the electronic device can be displayed in the corresponding two amphitheater screen projection terminals to complete the process of screen projection.

In this way, in the teaching process, teachers only operate on electronic devices, and can choose to cast the screen in a specific amphitheatre screen projection terminal. While meeting their own teaching requirements, it will not interfere with other teachers' projection of the rest of the amphitheatre. Compared with the prior art, the electronic device can only perform screen projection control on the screen projection terminal of the classroom where it is located, or perform unified control on the screen projection terminals of multiple fixed classrooms. By applying the screen projection method provided by the embodiments of the present invention, on the one hand, the degree of freedom and convenience of selecting a screen projection terminal can be improved; on the other hand, multiple independent teaching activities can be carried out normally at the same time.

Optionally, in the step 102, in the case of receiving the first input for screencasting the content displayed by the electronic device, displaying N terminal identifiers on the electronic device, including:

receive a first input;

According to the first input, the target screen projection content is determined, and N terminal identifiers are displayed on the electronic device, wherein the target screen projection content is in the P display areas of the electronic device, and the The content displayed in the display area matched by the first input, P is an integer greater than 1;

In step 104, the content displayed by the electronic device is sent to the target screen projection terminal for display, including:

Sending the target screen projection content to the target screen projection terminal for display.

In this embodiment, the electronic device may include multiple display areas, for example, multiple display areas may be obtained by performing a split-screen operation on the display screen of the electronic device; and the realization of the split-screen operation may be based on the The operating system is directly implemented, or it can be implemented by running a specific split-screen application, which is not specifically limited here.

It is easy to understand that when an electronic device has multiple display areas, different contents can be displayed in different display areas. For example, the plurality of display areas include a first display area and a second display area, the first display area may be a running interface for displaying a video application for loading a video resource, and the second display area may be Displays the preview interface of a document.

When there are multiple display areas on the electronic device, there may be multiple displayed contents; at this time, the target screen projection content can be determined from the multiple displayed contents according to the first input. For example, a corresponding screen projection control may be displayed in each display area. When the first input is a touch operation on a screen projection control displayed in the first display area, the first display area may be determined to be the same as the first input. For the matching display area, the content displayed in the first display area is determined as the target screen projection content, and the first display area here may be any display area among the multiple display areas; for another example, the first input may be a preset For the set gesture, the content displayed in the display area where the starting point of the gesture is located can be determined as the target screen projection content.

When both the target screen projection content and the target screen projection terminal are determined, the target screen projection content may be sent to the target screen projection terminal, so that the target screen projection terminal can display the target screen projection content.

In this embodiment, the electronic device has multiple display areas, which can be used to display different contents, which is convenient for displaying multiple contents at the same time; based on the first input, on the one hand, the screen projection process can be triggered, and on the other hand, it can also be determined Target projection content, which is convenient for users to project and display the content that needs to be mirrored.

An embodiment of the present invention further provides a screen projection method, which is applied to the first screen projection terminal, as shown in FIG. 2 , including:

Step 201: Determine an electronic device associated with the first screen projection terminal, wherein the electronic device is associated with N screen projection terminals, and the first screen projection terminal is any one of the N screen projection terminals A screen-casting terminal, where the electronic device is configured to display a terminal identifier corresponding to the first screen-casting terminal in the case of receiving a first input for performing screen-casting on the content displayed by the electronic device, and at the In the case of receiving the selection operation for the terminal identifier corresponding to the first screen-casting terminal, send the content displayed by the electronic device to the first screen-casting terminal, where N is an integer greater than 1;

Step 202: Display the content displayed by the electronic device.

The above-mentioned first screen projection terminal may be a projector or a rear projection TV, etc., which is not specifically limited here. The electronic device associated with the first screen projection terminal mainly refers to an electronic device capable of sending screen projection content to the first screen projection terminal to realize screen projection, such as an electronic device connected to the same WiFi as the first screen projection terminal, or an electronic device connected to the first screen projection terminal. An electronic device connected to a screen projection terminal through a physical port, etc., is not specifically limited here.

It is easy to understand that the above electronic device may be associated with multiple screen projection terminals at the same time, and the first screen projection terminal may be any one of the above-mentioned multiple screen projection terminals; after determining the electronic device associated with the first screen projection terminal. After the device is installed, the first screen projection terminal can send the corresponding identity information to the electronic device. When the user has a screen projection requirement, that is, when the first input is made, the electronic device can display the terminal corresponding to the first screen projection terminal based on the above-mentioned identity information. When the user selects the terminal identifier again, the electronic device can send the displayed content to the first screen projection terminal, and the first screen projection terminal can perform screen projection display based on the received content displayed by the electronic device .

In the screen projection method provided by the embodiment of the present invention, the first screen projection terminal can display the content displayed by the determined electronic device associated with it, and the realization of the screen projection display process can be achieved by receiving on the electronic device for the electronic device When the content displayed by the device is the first input for screencasting, the terminal identifier corresponding to the first screencasting terminal is displayed, and when a selection operation for the terminal identifier corresponding to the first screencasting terminal is received, Send the content displayed by the electronic device to the first screen projection terminal; in this embodiment of the present invention, the determination of the association relationship between the first screen projection terminal and the electronic device is relatively flexible, and when adjusting the above association relationship, there is no need to target the first screen projection terminal. The screen projection terminal is operated independently, and the operation of the screen projection process is relatively simple.

Optionally, in step 202, displaying the content displayed by the electronic device includes:

receiving target screen projection content, where the target screen projection content is the content displayed in the display area matching the first input in the P display areas of the electronic device;

Display the target screen projection content.

In this embodiment, the electronic device has multiple display areas, which can be used to display different contents, so that multiple contents can be displayed at the same time, and the first screen projection terminal can target the target projection in the display area matching the first input. The screen content is projected and displayed to meet the needs of users for accurate screen projection.

Optionally, in the case that the number of the target screen projection content is multiple, the displaying the target screen projection content includes at least one of the following:

According to a preset rule, determine one target screen projection content from a plurality of the target screen projection contents to display;

Perform screen splitting on the first screen projection terminal to obtain multiple sub-screen projection areas, and display a plurality of the target screen projection contents in the multiple sub-screen projection areas respectively.

It is easy to understand that an electronic device has multiple display areas, and different display areas have different display contents. In some scenarios, a user may have the requirement of projecting multiple display contents corresponding to the multiple display areas.

For example, in a teaching application scenario, the multiple display areas of the electronic device include a first display area and a second display area, the first display area displays the main lecture PPT file, and the second display area displays auxiliary materials Web page; the teacher may have projected the main lecture PPT file to the first screen projection terminal, and currently needs to project the auxiliary material webpage to the first screen projection terminal. Both the host PPT file and the auxiliary information webpage here can be considered as the above-mentioned target screen projection content.

When there are multiple target screencast contents, the target screencast contents can be displayed in the following ways:

One way is to determine one target screencast content from multiple target screencast contents to display according to preset rules; the preset rule here may refer to placing the target screencast content with the latest screencast time in the first screen. Displaying on a screen-casting terminal, or displaying the target screen-casting content corresponding to the display area with the highest priority among multiple display areas on the electronic device, is displayed on the first screen-casting terminal, etc. The rules are not specifically limited and can be determined according to actual needs.

Another way is to perform screen splitting on the first screen projection terminal, or multiple sub-screen projection areas, so that multiple target screen projection contents can be displayed in each sub-screen projection area respectively. For example, in combination with the above-mentioned teaching application scenarios, when projecting only for the lecturer's PPT file, there may be only one display area on the first screen projection terminal for displaying the lecturer's PPT file. When the screen is projected onto the first screen projection terminal, the display area of the first screen projection terminal may be divided into two sub-screen projection areas, which are respectively used to display the main lecture PPT file and the auxiliary data webpage. In this way, the first screen projection terminal can display multiple contents at the same time, thereby improving the screen projection effect.

In a preferred example, the above two ways of displaying the target screen projection content can exist independently; they can also exist at the same time and can be switched. For example, a control for switching the mode can be set in the electronic device. Controls are used to switch the display mode, thereby making the display mode more flexible and the scope of use wider.

Optionally, an embodiment of the present invention further provides an electronic device 300, including:

a first determining module 301, configured to determine N screen projection terminals associated with the electronic device, where N is an integer greater than 1;

The first display module 302 is configured to display N terminal identifiers on the electronic device when the first input for screencasting the content displayed by the electronic device is received, and the N terminal identifiers are displayed on the electronic device. The identifiers are in one-to-one correspondence with the N screen projection terminals;

The second determining module 303 is configured to, in the case of receiving a selection operation for at least one first terminal identifier among the N terminal identifiers, determine all screen-casting terminals corresponding to the at least one first terminal identifier as a target screen projection terminal, where the first terminal identifier is any terminal identifier among the N terminal identifiers;

The second display module 304 is configured to send the content displayed by the electronic device to the target screen projection terminal for display.

Optionally, the first display module 302 includes:

a first receiving unit for receiving a first input;

A determining display unit, configured to determine target screen projection contents according to the first input, and display N terminal identifiers on the electronic device, wherein the target screen projection contents are P displays on the electronic device In the area, the content displayed in the display area matching the first input, P is an integer greater than 1;

The second display module 304 includes:

The first display unit is configured to send the target screen projection content to the target screen projection terminal for display.

It should be noted that the electronic device is an electronic device corresponding to the above-mentioned screen projection method applied to the electronic device, and all implementations in the above method embodiments are applicable to the embodiments of the electronic device, and the same technical effect can also be achieved .

The embodiment of the present invention also provides a first screen projection terminal 400, including:

The third determination module 401 is configured to determine the electronic device associated with the first screen projection terminal, wherein the electronic device is associated with N screen projection terminals, and the first screen projection terminal is the N screen projection terminals Any screen-casting terminal among the terminals, where the electronic device is configured to display a screen corresponding to the first screen-casting terminal in the case of receiving the first input for screencasting the content displayed by the electronic device. terminal identification, and in the case of receiving the selection operation for the terminal identification corresponding to the first screen projection terminal, send the content displayed by the electronic device to the first screen projection terminal, N is greater than 1 integer;

The third display module 402 is configured to display the content displayed by the electronic device.

Optionally, the third display module 402 includes:

a second receiving unit, configured to receive target screen projection content, where the target screen projection content is the content displayed in the display area matching the first input in the P display areas of the electronic device;

The second display unit is configured to display the target screen projection content.

Optionally, when the number of the target screen projection contents is multiple, the second display unit includes at least one of the following:

a first display subunit, configured to determine one target screencast content from a plurality of the target screencast contents to display according to a preset rule;

The second display subunit is configured to perform screen splitting on the first screen projection terminal to obtain multiple sub-screen projection areas, and display a plurality of the target screen projection contents in the multiple sub-screen projection areas respectively.

It should be noted that the first screen-casting terminal is the first screen-casting terminal corresponding to the above-mentioned screen-casting method applied to the first screen-casting terminal, and all implementations in the above method embodiments are applicable to the first screen-casting terminal In the embodiment of , the same technical effect can also be achieved.

An embodiment of the present invention further provides an electronic device, including a memory, a processor, and a computer program stored in the memory and running on the processor, where the processor implements the above-mentioned computer program when the processor executes the computer program A screen projection method applied to an electronic device.

An embodiment of the present invention further provides a screen projection terminal, including a memory, a processor, and a computer program stored in the memory and running on the processor, where the processor implements the above when executing the computer program The screen projection method applied to the first screen projection terminal.

An implementation of the present invention further provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the above-mentioned screen projection method applied to an electronic device is implemented, or the above-mentioned screen projection method is implemented. The screen projection method applied to the first screen projection terminal.

The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the above-mentioned embodiments, those of ordinary skill in the art should understand that: it can still be used for the above-mentioned implementations. The technical solutions described in the examples are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions in the embodiments of the application, and should be included in the within the scope of protection of this application.

Claims (10)

1. A screen projection method, applied to an electronic device, wherein the method comprises: Determine N screen projection terminals associated with the electronic device, where N is an integer greater than 1; In the case of receiving the first input for screencasting the content displayed by the electronic device, display N terminal identifiers on the electronic device, the N terminal identifiers and the N screencasting One-to-one correspondence between terminals; In the case of receiving a selection operation for at least one first terminal identifier among the N terminal identifiers, all screen projection terminals corresponding to the at least one first terminal identifier are determined as target screen projection terminals, and the first terminal identifier is determined as the target screen projection terminal. A terminal identifier is any terminal identifier in the N terminal identifiers; Send the content displayed by the electronic device to the target screen projection terminal for display. 2 . The screen projection method according to claim 1 , wherein, in the case of receiving a first input for performing screen projection with respect to the content displayed by the electronic device, on the electronic device. 3 . Display N terminal identifiers, including: receive a first input; According to the first input, the target screen projection content is determined, and N terminal identifiers are displayed on the electronic device, wherein the target screen projection content is in the P display areas of the electronic device, and the The content displayed in the display area matched by the first input, P is an integer greater than 1; The sending the content displayed by the electronic device to the target screen projection terminal for display includes: Sending the target screen projection content to the target screen projection terminal for display. 3. A screen projection method, applied to a first screen projection terminal, characterized in that, comprising: Determine the electronic device associated with the first screen-casting terminal, wherein the electronic device is associated with N screen-casting terminals, and the first screen-casting terminal is any one of the N screen-casting terminals , the electronic device is configured to display the terminal identifier corresponding to the first screen-casting terminal in the case of receiving the first input for screencasting the content displayed by the electronic device, and after receiving the screencasting In the case of the selection operation of the terminal identifier corresponding to the first screen-casting terminal, the content displayed by the electronic device is sent to the first screen-casting terminal, where N is an integer greater than 1; Display the content displayed by the electronic device. 4. The screen projection method according to claim 3, wherein the displaying the content displayed by the electronic device comprises: receiving target screen projection content, where the target screen projection content is the content displayed in the display area matching the first input in the P display areas of the electronic device; Display the target screen projection content. 5 . The screen projection method according to claim 4 , wherein when the number of the target screen projection content is multiple, the displaying the target screen projection content includes at least one of the following items: 6 . : According to a preset rule, determine one target screen projection content from a plurality of the target screen projection contents to display; Perform screen splitting on the first screen projection terminal to obtain multiple sub-screen projection areas, and display a plurality of the target screen projection contents in the multiple sub-screen projection areas respectively. 6. An electronic device, characterized in that, comprising: a first determination module, configured to determine N screen projection terminals associated with the electronic device, where N is an integer greater than 1; a first display module, configured to display N terminal identifiers on the electronic device in the case of receiving a first input for screencasting the content displayed by the electronic device, the N terminal identifiers One-to-one correspondence with the N screen projection terminals; A second determining module, configured to determine all screen-casting terminals corresponding to the at least one first terminal identifier as targets when a selection operation for at least one first terminal identifier among the N terminal identifiers is received a screen-casting terminal, where the first terminal identifier is any terminal identifier among the N terminal identifiers; The second display module is configured to send the content displayed by the electronic device to the target screen projection terminal for display. 7. A first screen projection terminal, comprising: A third determining module, configured to determine an electronic device associated with the first screen projection terminal, wherein the electronic device is associated with N screen projection terminals, and the first screen projection terminal is the N screen projection terminals Any one of the screen-casting terminals, the electronic device is configured to display a terminal corresponding to the first screen-casting terminal in the case of receiving a first input for performing screen-casting on the content displayed by the electronic device ID, and in the case of receiving the selection operation for the terminal ID corresponding to the first screen projection terminal, send the content displayed by the electronic device to the first screen projection terminal, N is an integer greater than 1 ; The third display module is used for displaying the content displayed by the electronic device. 8. An electronic device, comprising a memory, a processor, and a computer program stored in the memory and running on the processor, wherein the processor implements the computer program as claimed in the claims The method of any one of 1 to 2. 9. A screen projection terminal, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the computer program as claimed in the right when the processor executes the computer program. The method of any one of claims 3 to 5. 10. A computer-readable storage medium storing a computer program, wherein the computer program implements the method according to any one of claims 1 to 2 when the computer program is executed by a processor, Or implement the method as claimed in any one of claims 3 to 5.

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