android 设置横屏竖屏

最新推荐文章于 2024-06-08 21:20:00 发布

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本文深入探讨了在Android应用开发过程中如何通过代码控制和XML配置实现横屏或竖屏显示，详细解释了`setRequestedOrientation`方法和`android:screenOrientation`属性的用法，包括其不同取值所对应的功能和场景。

在android应用开发过程中，尤其是在界面布局当中，经常会碰到要指定布局为横屏或是竖屏显示，下面是一些设置android横竖屏的方法：

代码控制

getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);//设置成全屏模式
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);//强制为横屏
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);//竖屏

xml控制
在activity里设置android:screenOrientation的值。
android:screenOrientation的属性有以下值：
unspecified(默认值，由系统判断状态自动切换),The default value. The system chooses the orientation. The policy it uses, and therefore the choices made in specific contexts, may differ from device to device.
landscape,横屏
portrait,竖屏
user(用户当前设置的orientation值),The user's current preferred orientation.
behind(下一个要显示的Activity的orientation值),The same orientation as the activity that's immediately beneath it in the activity stack.
sensor(传感器的方向),The orientation determined by a physical orientation sensor. The orientation of the display depends on how the user is holding the device; it changes when the user rotates the device.
nosensor(不使用传感器，这个效果差不多等于unspecified).An orientation determined without reference to a physical orientation sensor. The sensor is ignored, so the display will not rotate based on how the user moves the device. Except for this distinction, the system chooses the orientation using the same policy as for the "unspecified" setting.