Prevent StatusBar from showing when using AlertDialog.Builder

Question

In the XML of my MainActivity, I have programmed it so that it uses a theme with NoActionBar and therefore there is no ac

Answer 1

For API Level 17 and up, see gprathour's answer.

For API Level 16 and lower, the following line needed to be added to my Dialog's onCreate()

this.getActivity().getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

Answer 2

You should use on style.xml

<resources>
    <style name="AppTheme" parent="Theme.AppCompat.NoActionBar">
    </style>
</resources>

It makes your activity without your ActionBar!

UPDATED:

I have some code, It should works on you!

ab = new AlertDialog.Builder(MainActivity.this,
                    AlertDialog.THEME_DEVICE_DEFAULT_DARK);

            ab.setNeutralButton("OK", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface arg0, int arg1) {
                }
            });

            ab.setTitle(R.string.welcome_title);
            ab.setMessage(R.string.message);
            ab.create().show();

UPDATED2:

here some code on Java

requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.main);

and some on XML

<activity
    android:name=".MainActivity"
    android:theme="@android:style/Theme.NoTitleBar.Fullscreen">
</activity>

Hope it be helpful!

Answer 3

Calling this method I've created at the Dialog's onCreate() fully resolved the problem of status bar show or show/hide.

private void hideStatusBar(Window window) {
    window.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_FULLSCREEN);
    window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS | WindowManager.LayoutParams.FLAG_FULLSCREEN);
}

Answer 4

I found a resource from the android official docs. So basically, for android version 4.1 and higher, use this code:

View decorView = getWindow().getDecorView();
// Hide the status bar.
int uiOptions = View.SYSTEM_UI_FLAG_FULLSCREEN;
decorView.setSystemUiVisibility(uiOptions);
// Remember that you should never show the action bar if the
// status bar is hidden, so hide that too if necessary.
ActionBar actionBar = getActionBar();
actionBar.hide();

PS: Source Link to official android doc

Answer 5

Latest Working Example

The accepted answer works only for API Level 16 or lower. In newer versions, for AlertDialog do the following:

if (Build.VERSION.SDK_INT < 16) {
    alert.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
} else {
    View decorView = alert.getWindow().getDecorView();
    int uiOptions = View.SYSTEM_UI_FLAG_FULLSCREEN;
    decorView.setSystemUiVisibility(uiOptions);
}