public class View implements Drawable.Callback, KeyEvent.Callback,
AccessibilityEventSource {
public static final int SYSTEM_UI_FLAG_VISIBLE = 0; // 显示状态栏
public static final int SYSTEM_UI_FLAG_LOW_PROFILE = 0x00000001; // 弱化状态栏和导航栏的图标
public static final int SYSTEM_UI_FLAG_HIDE_NAVIGATION = 0x00000002; // 隐藏导航栏
public static final int SYSTEM_UI_FLAG_FULLSCREEN = 0x00000004; // 需要下拉才显示状态栏
public static final int SYSTEM_UI_FLAG_LAYOUT_STABLE = 0x00000100; // 稳定的布局，不会随状态栏和导航栏的隐藏、显示而变化
public static final int SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION = 0x00000200; // 将布局内容拓展到导航栏的后面
public static final int SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN = 0x00000400; // 将布局内容拓展到状态栏的后面
public static final int SYSTEM_UI_FLAG_IMMERSIVE = 0x00000800; // 使状态栏和导航栏真正的进入沉浸模式，即全屏模式
public static final int SYSTEM_UI_FLAG_IMMERSIVE_STICKY = 0x00001000; // 沉浸模式，用户可以交互的界面。同时，用户上下拉系统栏时，会自动隐藏系统栏
int mSystemUiVisibility;
/**
* Request that the visibility of the status bar or other screen/window
* decorations be changed.
*
* @param visibility Bitwise-or of flags {@link #SYSTEM_UI_FLAG_LOW_PROFILE},
* {@link #SYSTEM_UI_FLAG_HIDE_NAVIGATION}, {@link #SYSTEM_UI_FLAG_FULLSCREEN},
* {@link #SYSTEM_UI_FLAG_LAYOUT_STABLE}, {@link #SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION},
* {@link #SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN}, {@link #SYSTEM_UI_FLAG_IMMERSIVE},
* and {@link #SYSTEM_UI_FLAG_IMMERSIVE_STICKY}.
*/
public void setSystemUiVisibility(int visibility) {
if (visibility != mSystemUiVisibility) {
mSystemUiVisibility = visibility;
if (mParent != null && mAttachInfo != null && !mAttachInfo.mRecomputeGlobalAttributes) {
mParent.recomputeViewAttributes(this);
}
}
}
}
