WO2012119531A1 - 屏幕旋转时java应用程序界面跟随旋转的方法 - Google Patents

屏幕旋转时java应用程序界面跟随旋转的方法 Download PDF

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WO2012119531A1
WO2012119531A1 PCT/CN2012/071951 CN2012071951W WO2012119531A1 WO 2012119531 A1 WO2012119531 A1 WO 2012119531A1 CN 2012071951 W CN2012071951 W CN 2012071951W WO 2012119531 A1 WO2012119531 A1 WO 2012119531A1
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screen
java
mobile device
rotation
pixel value
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杨彬
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惠州Tcl移动通信有限公司
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1684—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
    • G06F1/1694—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675 the I/O peripheral being a single or a set of motion sensors for pointer control or gesture input obtained by sensing movements of the portable computer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/451—Execution arrangements for user interfaces
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
    • G06F2200/16—Indexing scheme relating to G06F1/16 - G06F1/18
    • G06F2200/161—Indexing scheme relating to constructional details of the monitor
    • G06F2200/1614—Image rotation following screen orientation, e.g. switching from landscape to portrait mode
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
    • G06F2200/16—Indexing scheme relating to G06F1/16 - G06F1/18
    • G06F2200/163—Indexing scheme relating to constructional details of the computer
    • G06F2200/1637—Sensing arrangement for detection of housing movement or orientation, e.g. for controlling scrolling or cursor movement on the display of an handheld computer

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  • the present invention relates to the field of mobile device applications, and in particular, to a method for following a rotation of a JAVA application interface when a screen of a mobile device is rotated.
  • more and more mobile devices support screen rotation, such as by sliding cover or G-sensor or other means, so that users can switch horizontal screen at any time according to their own preferences.
  • the local application developed by the operating platform language in the mobile device can directly receive the trigger event, thereby implementing the following rotation of the application interface, but the JAVA application in the mobile device, due to the JAVA specification There are no interface definitions for screen rotation events. Most JAVA applications are designed for a fixed screen size, or only read the current screen size (height/width) from the system at startup and then display it at that size. , causing the display interface to not rotate following the rotation of the mobile device screen.
  • JAVA technology is a highly standardized technology. Often, any functionality that is not included in the standard cannot be created by a JAVA application, otherwise the JAVA application is difficult to adapt between different systems, that is, cross-platform. However, in the case of standardization technology lags, some emerging application requirements will inevitably lead to the expansion or reuse of existing functions.
  • An object of the present invention is to provide a method for following a rotation of a JAVA application interface when a screen of a mobile device rotates, aiming at solving a JAVA application in an existing mobile device, since there is no interface definition for a screen rotation event in the JAVA specification, thereby It is not possible to implement the problem that its application interface rotates following the screen rotation.
  • a method for following a rotation of a JAVA application interface when a screen of a mobile device is rotated comprising the following steps:
  • S100 The processor detects that the state of the mobile device changes to trigger the screen to rotate;
  • the platform application layer controls the following application to implement the following rotation of the display interface, and sends the screen rotation event to the JAVA kernel through the JAVA adaptation layer;
  • the JAVA kernel calls the mobile device screen size change interface of the JAVA application
  • the method in which the JAVA application interface follows the rotation when the screen of the mobile device rotates, wherein the manner in which the trigger screen is rotated includes: changing the state of the slider or detecting a change in the direction of the mobile device by the sensor.
  • the JAVA application interface follows a rotation method when the mobile device screen rotates, wherein the JAVA application includes a full screen display application and a non-full screen display application.
  • the JAVA application interface follows a rotation method when the mobile device screen rotates, wherein, for a full-screen display JAVA application, the JAVA kernel modifies the screen size parameter by: exchanging the screen height and the width pixel value, and rotating The previous screen height pixel value is set to the rotated screen width pixel value, and the screen width pixel value before the rotation is set to the rotated screen height pixel value.
  • the JAVA application interface follows a rotation method when the mobile device screen rotates, wherein, for a JAVA application that is not full-screen display, the specific method of modifying the screen size parameter by the JAVA kernel is: calculating a status bar and a soft key bar The pixel value of the area, the screen height pixel value before the rotation plus the state bar height pixel value before the rotation plus the soft key bar height pixel value before the rotation to obtain the rotated screen width pixel value, and the screen width before the rotation The pixel value minus the rotated state bar height pixel value minus the rotated soft key bar height pixel value gives the rotated screen height pixel value.
  • the present invention provides a standard interface Displayable.sizeChanged (screen size change interface) defined in the multiplexed JAVA basic specification to deliver a screen rotation event, thereby realizing a mobile device screen rotation with a minimum development workload.
  • the JAVA application interface follows the technical approach of rotation, enabling a mobile device with a rotatable screen to have a more complete user experience enhancement.
  • Figure 1 is a schematic diagram of the structure of the JAVA technology platform.
  • FIG. 2 is a flow chart of a method provided by the present invention.
  • JAVA technology is a cross-platform software technology.
  • J2ME-compliant Java applications MIDlets
  • MIDlets can be easily adapted and adapted (even without adjustment at all) on different hardware devices, regardless of the processor and operating system details of the hardware device platform.
  • JAVA kernel Core
  • JVM JAVA kernel
  • JAM JAVA Application Manager
  • JAVA application management layer As part of the JAVA virtual machine, it can also be seen as a basic application layer on top of the JAVA kernel.
  • Running under the JAVA adaptation layer is the system platform, as well as some underlying applications. Other higher-level applications may also communicate with JAVA systems and JAVA applications, but often do not communicate directly, but through the help of the JAVA adaptation layer and the JAVA kernel and JAM.
  • the flow chart of the method for following the rotation of the JAVA application interface when the screen of the mobile device is rotated includes the following steps:
  • Step S100 The processor detects that the mobile device status change triggers the screen to rotate.
  • Step S200 The underlying application sends a screen rotation event to the platform application layer.
  • Step S300 The platform application layer controls the local application to implement the following rotation of the display interface, and sends the screen rotation event to the JAVA kernel through the JAVA adaptation layer.
  • Step S400 The JAVA kernel modifies the screen size parameter.
  • Step S500 The JAVA kernel calls the mobile device screen size change interface of the JAVA application.
  • Step S600 The JAVA application reads the new screen size parameter in the mobile device screen size change interface function and refreshes the interface display accordingly.
  • the mobile device takes a mobile phone as an example, but is not limited to a mobile phone, and the event that triggers the screen to rotate includes a change in the state of the slide or a change in the direction of the mobile device by a sensor (G-sensor) or other mechanical/electronic means.
  • a sensor G-sensor
  • the first is to detect the change of the direction of the mobile device through the G-sensor or to trigger the screen rotation event by other mechanical/electronic means.
  • the processor of the mobile device detects the screen rotation of the mobile device, which passes through the bottom layer.
  • the application sends a screen rotation event to the platform application layer, where many platform local applications receive this event and refresh the current display interface (if any) or the next display interface to achieve follow-up rotation.
  • the platform application layer sends the screen rotation event to the JAVA kernel, the JVM, which is the core part of the JAVA virtual machine through the JAVA adaptation layer.
  • the platform application layer adds a definition of the screen rotation event for JAVA in the event definition file and passes it to the JAVA adaptation layer, which is then passed to the JVM. For example, it is defined as: MSG_ID_MMI_JAVA_SCREEN_ROTATION_IND.
  • the JVM modifies the screen size parameters of its records, which can be read by the JAVA application. Since some JAVA programs use full-screen display, and some JAVA programs use non-full-screen display, the JAVA program for non-full-screen display needs to deduct the top status bar for displaying time/power/network icons and the bottom end for displaying left and right buttons. The space of the soft key bar of the function string.
  • the strip height pixel value plus the soft box strip height pixel value before the rotation obtains the rotated screen width pixel value, and the rotated screen width pixel value minus the rotated status bar height pixel value minus the rotated soft key
  • the bar height pixel value gets the rotated screen height pixel value.
  • the JAVA application is implemented in turn in the Displayable.sizeChanged function: read the new screen size parameter from the JVM; recalculate the size position of each display element of the adjustment interface according to the new screen size parameter, if the application is originally designed for dynamic display Non-fixed size, this step is easier to implement; finally the JAVA application refreshes the interface display to achieve the final following rotation effect.
  • the present invention provides a standard interface Displayable.sizeChanged defined in the basic specification of JAVA to deliver a screen rotation event, thereby implementing a technical method of following the rotation of the JAVA application interface when the screen of the mobile device is rotated with a minimum development workload. Rotating screen mobile devices have a more complete user experience boost.

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Abstract

本发明公开了一种移动设备屏幕旋转时JAVA应用程序界面跟随旋转的方法，包括以下步骤：处理器检测到移动设备状态发生改变触发屏幕进行旋转；底层应用程序将屏幕旋转事件发送给平台应用层；平台应用层控制本地应用程序实现与显示界面的跟随旋转，并通过JAVA适配层将屏幕旋转事件发送给JAVA内核；JAVA内核修改屏幕尺寸参数；JAVA内核调用JAVA应用程序的移动设备屏幕尺寸更改接口；JAVA应用程序在移动设备屏幕尺寸更改函数中读取新的屏幕尺寸参数并据此刷新界面显示。本发明以最小的开发工作量实现移动设备屏幕旋转时JAVA应用程序界面跟随旋转的技术方法，使得可旋转屏幕的移动设备拥有更完整的用户体验提升。

Description

移动设备屏幕旋转时JAVA应用程序界面跟随旋转的方法
技术领域
本发明涉及移动设备应用领域，尤其涉及的是一种移动设备屏幕旋转时JAVA应用程序界面跟随旋转的方法。
背景技术
为了提供更加丰富的用户体验，适应不同的使用习惯，越来越多的移动设备支持屏幕旋转，比如通过滑盖或G-sensor或其它方式触发，从而使用户能够根据自己的喜好随时切换横屏显示或者竖屏显示。
屏幕旋转被触发的时候，移动设备中使用操作平台语言开发的本地应用程序能够直接收到该触发事件，从而实现其应用程序界面的跟随旋转，但是移动设备中的JAVA应用程序，由于JAVA规范中并没有针对屏幕旋转事件的接口定义，绝大多数JAVA应用程序只针对固定的屏幕尺寸设计，或者只在启动时从系统读取一次当前的屏幕尺寸（高/宽）然后一直按照该尺寸进行显示，导致显示界面并不能跟随移动设备屏幕旋转而旋转。
JAVA技术是一个高度标准化的技术。通常情况下，任何没有被纳入标准的功能无法被JAVA应用程序创造实现，否则该JAVA应用程序难以在不同系统间自由适应，即跨平台运行。但在标准化技术滞后的情况下，一些新出现的应用需求必然导致对现有功能的扩展或复用。
因此，现有技术还有待于改进和发展。
发明内容
本发明的目的在于提供一种移动设备屏幕旋转时JAVA应用程序界面跟随旋转的方法，旨在解决现有移动设备中的JAVA应用程序，由于JAVA规范中并没有针对屏幕旋转事件的接口定义，从而不能实现其应用程序界面跟随屏幕旋转而旋转的问题。
本发明的技术方案如下：
一种移动设备屏幕旋转时JAVA应用程序界面跟随旋转的方法，其包括以下步骤：
S100：处理器检测到移动设备状态发生改变触发屏幕进行旋转；
S200：底层应用程序将屏幕旋转事件发送给平台应用层；
S300：平台应用层控制本地应用程序实现与显示界面的跟随旋转，并通过JAVA适配层将屏幕旋转事件发送给JAVA内核；
S400：JAVA内核修改屏幕尺寸参数；
S500：JAVA内核调用JAVA应用程序的移动设备屏幕尺寸更改接口；
S600：JAVA应用程序在移动设备屏幕尺寸更改函数中读取新的屏幕尺寸参数并据此刷新界面显示。
所述的移动设备屏幕旋转时JAVA应用程序界面跟随旋转的方法，其中，触发屏幕进行旋转的方式包括：滑盖状态改变或者通过传感器检测移动设备方向发生变化。
所述的移动设备屏幕旋转时JAVA应用程序界面跟随旋转的方法，其中，所述JAVA应用程序包括全屏显示的应用程序和非全屏显示的应用程序。
所述的移动设备屏幕旋转时JAVA应用程序界面跟随旋转的方法，其中，对于全屏显示的JAVA应用程序，所述JAVA内核修改屏幕尺寸参数的具体方法为：交换屏幕高和宽像素值，将旋转前的屏幕高度像素值设置为旋转后的屏幕宽度像素值，同时将旋转前的屏幕宽度像素值设置为旋转后的屏幕高度像素值。
所述的移动设备屏幕旋转时JAVA应用程序界面跟随旋转的方法，其中，对于非全屏显示的JAVA应用程序，所述JAVA内核修改屏幕尺寸参数的具体方法为：计算状态条和软键条所占区域的像素值，将旋转前的屏幕高度像素值加上旋转前的状态条高度像素值加上旋转前的软键条高度像素值得到旋转后的屏幕宽度像素值，同时将旋转前的屏幕宽度像素值减去旋转后的状态条高度像素值减去旋转后的软键条高度像素值得到旋转后的屏幕高度像素值。
本发明的有益效果：本发明提供一种复用JAVA基本规范中定义的一个标准接口Displayable.sizeChanged（屏幕尺寸更改接口）来传递屏幕旋转事件，从而以最小的开发工作量实现移动设备屏幕旋转时JAVA应用程序界面跟随旋转的技术方法，使得可旋转屏幕的移动设备拥有更完整的用户体验提升。
附图说明
图1是JAVA技术平台的结构示意图。
图2是本发明提供的方法的流程图。
具体实施方式
为使本发明的目的、技术方案及优点更加清楚、明确，以下参照附图并举实施例对本发明进一步详细说明。
如图1所示，JAVA技术是一个跨平台的软件技术。符合J2ME规范的JAVA应用程序（MIDlet）可以在不同的硬件设备上经过简单的调整和适配（甚至完全不需要调整）而运行，而不用考虑硬件设备平台的处理器及操作系统细节。
JAVA本身的跨平台特性依赖于其抽象的应用程序运行环境也即JAVA虚拟机。实现JAVA虚拟机的核心部分功能通常被称为JAVA内核（Core），或者也简单的称为JVM。
不同的JAVA应用程序运行在同一个硬件设备上时需要对其资源和记录信息的管理，这部分功能通常称为JAVA应用程序管理器（简称为JAM），或称为JAVA应用管理层，可以看作JAVA虚拟机的一部分，也可以看作JAVA内核之上的一个基础的应用层。
为了将JAVA技术的整体运行于另一个实体软硬件平台上，需要一些嫁接和适配的工作。与此相关的所有软件硬件配合部分通常被称为JAVA的适配及JAVA适配层。
运行在JAVA适配层之下的就是系统平台，以及一些底层应用程序。 其他更高层的应用也可能与JAVA系统和JAVA应用程序发生通信等操作，但往往不能直接通信，而是通过JAVA适配层和JAVA内核和JAM的帮助。
参见图2，本发明提供移动设备屏幕旋转时JAVA应用程序界面跟随旋转的方法流程包括以下步骤：
步骤S100：处理器检测到移动设备状态发生改变触发屏幕进行旋转。
步骤S200：底层应用程序将屏幕旋转事件发送给平台应用层。
步骤S300：平台应用层控制本地应用程序实现与显示界面的跟随旋转，并通过JAVA适配层将屏幕旋转事件发送给JAVA内核。
步骤S400：JAVA内核修改屏幕尺寸参数。
步骤S500：JAVA内核调用JAVA应用程序的移动设备屏幕尺寸更改接口。
步骤S600：JAVA应用程序在移动设备屏幕尺寸更改接口函数中读取新的屏幕尺寸参数并据此刷新界面显示。
其中，所述移动设备以手机为例，但不限于手机，其触发屏幕进行旋转的事件包括滑盖状态改变或者通过传感器（G-sensor）检测移动设备方向发生变化或者其它机械/电子方式。
本发明提供的方法的详细方案描述如下：
首先是通过滑盖状态改变或者通过G-sensor检测移动设备方向发生变化或者通过其它机械/电子方式触发了屏幕旋转事件，此时移动设备的处理器检测到移动设备的屏幕旋转动作，其通过底层应用将屏幕旋转事件发送给平台应用层，在这里，众多平台本地应用程序都会收到这个事件，并据此刷新当前显示界面（如果有的话）或者下一次显示界面，从而实现跟随旋转。
传统方案中到这里就处理结束了，在本技术方法提供的方案中，新增如下处理：
平台应用层通过JAVA适配层，将屏幕旋转事件发送给JAVA虚拟机的核心部分JAVA内核即JVM。平台应用层在事件定义文件中新增针对JAVA的屏幕旋转事件定义，并将其传递给JAVA适配层，所述JAVA适配层再传递给JVM。例如，定义为：MSG_ID_MMI_JAVA_SCREEN_ROTATION_IND。
JVM修改其记录的屏幕尺寸参数，所述屏幕尺寸参数可以被JAVA应用程序读到。由于有些JAVA程序使用全屏显示，而有些JAVA程序使用非全屏显示，因此对于非全屏显示的JAVA程序需扣除顶端的用来显示时间/电量/网络等图标的状态条和底端的用来显示左右键功能字符串的软键条的空间。所以这两种情况都要考虑：对于全屏显示的情况，只需要交换屏幕高/宽像素值，即将旋转前的屏幕高度像素值设置为旋转后的屏幕宽度像素值，同时将旋转前的屏幕宽度像素值设置为旋转后的屏幕高度像素值；对于非全屏显示的情况，则需要重新计算加减状态条和软键条所占的区域，即将旋转前的屏幕高度像素值加上旋转前的状态条高度像素值加上旋转前的软键条高度像素值得到旋转后的屏幕宽度像素值，同时将旋转前的屏幕宽度像素值减去旋转后的状态条高度像素值减去旋转后的软键条高度像素值得到旋转后的屏幕高度像素值。
然后JVM调用JAVA应用程序的Displayable.sizeChanged
(包括Canvas.sizeChanged)，Displayable.sizeChanged
(包括Canvas.sizeChanged)是JAVA基本规范中定义的一个标准接口，主要用于JAVA应用程序在切换全屏模式和非全屏模式时刷新显示界面，其具体内容由JAVA应用程序自己实现，JVM无法统一控制，因此为了达到跟随旋转的目标，最后对JAVA应用程序做如下要求：
JAVA应用程序在Displayable.sizeChanged函数中依次实现：从JVM读取新的屏幕尺寸参数；根据新的屏幕尺寸参数，重新计算调整界面各显示元素的大小位置，如果该应用程序最初设计成动态显示而非固定尺寸，这一步就更加容易实现；最后JAVA应用程序刷新界面显示，从而实现最终的跟随旋转效果。
本发明提供一种复用JAVA基本规范中定义的一个标准接口Displayable.sizeChanged来传递屏幕旋转事件，从而以最小的开发工作量实现移动设备屏幕旋转时JAVA应用程序界面跟随旋转的技术方法，使得可旋转屏幕的移动设备拥有更完整的用户体验提升。
应当理解的是，本发明的应用不限于上述的举例，对本领域普通技术人员来说，可以根据上述说明加以改进或变换，所有这些改进和变换都应属于本发明所附权利要求的保护范围。

Claims (5)

  1. 一种移动设备屏幕旋转时JAVA应用程序界面跟随旋转的方法，其特征在于，包括以下步骤：
    S100：处理器检测到移动设备状态发生改变触发屏幕进行旋转；
    S200：底层应用程序将屏幕旋转事件发送给平台应用层；
    S300：平台应用层控制本地应用程序实现与显示界面的跟随旋转，并通过JAVA适配层将屏幕旋转事件发送给JAVA内核；
    S400：JAVA内核修改屏幕尺寸参数；
    S500：JAVA内核调用JAVA应用程序的移动设备屏幕尺寸更改接口；
    S600：JAVA应用程序在移动设备屏幕尺寸更改函数中读取新的屏幕尺寸参数并据此刷新界面显示。
  2. 根据权利要求1所述的移动设备屏幕旋转时JAVA应用程序界面跟随旋转的方法，其特征在于，触发屏幕进行旋转的方式包括：滑盖状态改变或者通过传感器检测移动设备方向发生变化。
  3. 根据权利要求1所述的移动设备屏幕旋转时JAVA应用程序界面跟随旋转的方法，其特征在于，所述JAVA应用程序包括全屏显示的应用程序和非全屏显示的应用程序。
  4. 根据权利要求3所述的移动设备屏幕旋转时JAVA应用程序界面跟随旋转的方法，其特征在于，对于全屏显示的JAVA应用程序，所述JAVA内核修改屏幕尺寸参数的具体方法为：交换屏幕高和宽像素值，将旋转前的屏幕高度像素值设置为旋转后的屏幕宽度像素值，同时将旋转前的屏幕宽度像素值设置为旋转后的屏幕高度像素值。
  5. 根据权利要求3所述的移动设备屏幕旋转时JAVA应用程序界面跟随旋转的方法，其特征在于，对于非全屏显示的JAVA应用程序，所述JAVA内核修改屏幕尺寸参数的具体方法为：计算状态条和软键条所占区域的像素值，将旋转前的屏幕高度像素值加上旋转前的状态条高度像素值加上旋转前的软键条高度像素值得到旋转后的屏幕宽度像素值，同时将旋转前的屏幕宽度像素值减去旋转后的状态条高度像素值减去旋转后的软键条高度像素值得到旋转后的屏幕高度像素值。
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