使用使用沉浸式模式的客户端应用程序,使用以下代码隐藏每个活动的导航栏和状态栏：
int currentApiVersion = android.os.Build.VERSION.SDK_INT;
final int flags = 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;
// This work only for android 4.4+
if (currentApiVersion >= 19) {
getWindow().getDecorView().setsystemUIVisibility(flags);
// Code below is for case when you press Volume up or Volume down.
// Without this after pressing valume buttons navigation bar will
// show up and don't hide
final View decorView = getWindow().getDecorView();
decorView
.setOnsystemUIVisibilityChangeListener(new View.OnsystemUIVisibilityChangeListener() {
@Override
public void onsystemUIVisibilityChange(int visibility) {
if ((visibility & View.SYSTEM_UI_FLAG_FULLSCREEN) == 0) {
decorView.setsystemUIVisibility(flags);
}
}
});
}
唯一的问题是,他们希望应用程序保持沉浸式模式,即使软键盘显示输入到EditText中也不会显示导航栏.任何人都可以想到总是使用导航按钮(背面/隐藏键盘,家庭等)的方法,即使在使用键盘时总是隐藏？
解决方法
我想出了一个解决方法,检查每个内部的导航栏的状态,尝试隐藏它,并再次检查(再次).
private final Runnable checksystemUIRunnable = new Runnable() { @Override public void run() { checkHidesystemUI(); } }; private void checkHidesystemUI() { // Check if system UI is shown and hide it by post a delayed handler if (issystemUIShown) { hidesystemUI(); handler.postDelayed(checksystemUIRunnable,SYSTEM_UI_HIDE_DELAY); } } private void hidesystemUI() { 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 // hide nav bar | View.SYSTEM_UI_FLAG_FULLSCREEN // hide status bar | View.SYSTEM_UI_FLAG_IMMERSIVE); } // In onCreate() decorView.setOnsystemUIVisibilityChangeListener( new View.OnsystemUIVisibilityChangeListener() { @Override public void onsystemUIVisibilityChange(int visibility) { if ((visibility & View.SYSTEM_UI_FLAG_FULLSCREEN) == 0) { handler.postDelayed(checksystemUIRunnable,SYSTEM_UI_HIDE_DELAY); issystemUIShown = true; } else { issystemUIShown = false; } } });
