Android 动态隐藏显示导航栏，状态栏

Talk is cheap, show me the code.

--Linus Torvalds

Okay, here:

一、导航栏：

private void hideNavigationBar() {
View decorView = getWindow().getDecorView();
int uiOptions = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_FULLSCREEN;
decorView.setSystemUiVisibility(uiOptions);
}

private void showNavigationBar() {
View decorView = getWindow().getDecorView();
int uiOptions = View.SYSTEM_UI_FLAG_VISIBLE;
decorView.setSystemUiVisibility(uiOptions);
}

相关：

SYSTEM_UI_FLAG_VISIBLE——显示状态栏和导航栏

SYSTEM_UI_FLAG_LOW_PROFILE——此模式下，状态栏的图标可能是暗的

SYSTEM_UI_FLAG_HIDE_NAVIGATION——隐藏导航栏

SYSTEM_UI_FLAG_FULLSCREEN——全屏，隐藏状态栏和导航栏

SYSTEM_UI_FLAG_LAYOUT_STABLE

SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION

SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN——全屏，隐藏导航栏，状态栏浮在布局上。

SYSTEM_UI_FLAG_IMMERSIVE——沉浸式：半透明的状态栏和导航栏

SYSTEM_UI_FLAG_IMMERSIVE_STICKY——粘性沉浸式

二、状态栏：

private void setStatusBarVisible(boolean show) {
if (show) {
int uiFlags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE;
uiFlags |= 0x00001000;
getWindow().getDecorView().setSystemUiVisibility(uiFlags);
} else {
int uiFlags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
| View.SYSTEM_UI_FLAG_FULLSCREEN;
uiFlags |= 0x00001000;
getWindow().getDecorView().setSystemUiVisibility(uiFlags);
}
}

三、导航栏和状态栏
private void setSystemUIVisible(boolean show) {
if (show) {
int uiFlags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE;
uiFlags |= 0x00001000;
getWindow().getDecorView().setSystemUiVisibility(uiFlags);
} else {
int uiFlags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
| View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_FULLSCREEN;
uiFlags |= 0x00001000;
getWindow().getDecorView().setSystemUiVisibility(uiFlags);
}
}