我想知道如何在Android应用程序中隐藏导航栏?
我知道如何最初隐藏它,但是一旦我触摸屏幕它就会重新弹出。我想以类似Clash of Clans游戏的方式隐藏它,只有通过向下滑动通知或向导航栏应该出现的位置滑动才能使其弹出。
我知道如何最初隐藏它,但是一旦我触摸屏幕它就会重新弹出。我想以类似Clash of Clans游戏的方式隐藏它,只有通过向下滑动通知或向导航栏应该出现的位置滑动才能使其弹出。
使用沉浸模式,请查看沉浸模式
// This snippet hides the system bars.
private void hideSystemUI() {
// Set the IMMERSIVE flag.
// Set the content to appear under the system bars so that the content
// doesn't resize when the system bars hide and show.
mDecorView.setSystemUiVisibility(
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 // hide nav bar
| View.SYSTEM_UI_FLAG_FULLSCREEN // hide status bar
| View.SYSTEM_UI_FLAG_IMMERSIVE);
}
// This snippet shows the system bars. It does this by removing all the flags
// except for the ones that make the content appear under the system bars.
private void showSystemUI() {
mDecorView.setSystemUiVisibility(
View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
}
在onCreate方法的上下文中,它是这样的:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
this.getWindow().getDecorView().setSystemUiVisibility(
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
| View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
}
安卓文档对不同标志的功能有很好的解释: 使用沉浸式全屏模式
只需将此方法放置在您希望以粘性模式隐藏状态栏和导航栏的活动中。
@Override
public void onWindowFocusChanged(boolean hasFocus) {
super.onWindowFocusChanged(hasFocus);
//This is used to hide/show 'Status Bar' & 'System Bar'. Swip bar to get it as visible.
View decorView = getWindow().getDecorView();
if (hasFocus) {
decorView.setSystemUiVisibility(
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
| View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
}
}
View decorView
标记为红色。 - Mark KortinkView decorView
只是 View 类的一个对象。 - Chirag PrajapatigetWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
this.getWindow()
.setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
您可以使用上面的代码片段创建一个活动,然后在布局上方添加另一个窗口:
LayoutParams layoutParameteres=new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
v.setLayoutParams(layoutParameteres);
final WindowManager.LayoutParams parameters=new WindowManager.LayoutParams(sizeX, sizeY, WindowManager.LayoutParams.TYPE_PHONE, WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, PixelFormat.TRANSLUCENT);
parameters.gravity=Gravity.CENTER;
parameters.x=0;
parameters.y=0;
wm.addView(v, parameters);
祝你好运
android:theme="@style/Theme.AppCompat.DayNight.NoActionBar"