Extends Service and Implements Activity in the same class || Android

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Extends Service and Implements Activity in the same class || Android

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#1 by (2 votes)

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I'm trying to make an Android app that hides both the notification bar and the action bar (back to the start, etc), so I had thought about creating a service that hides the action bar because the notification bar does not I have a problem but when creating it I am forced to use both Service and Activity , this gives me the error in Activity :

Interface expected here

my code:

import android.app.Activity;
import android.app.Service;
import android.content.Intent;
import android.os.Build;
import android.os.IBinder;
import android.support.annotation.RequiresApi;

import android.view.View;

public class FirstService extends Service implements Activity{


    @Override
    public IBinder onBind(Intent arg0) {
        return null;
    }

    @RequiresApi(api = Build.VERSION_CODES.HONEYCOMB)

    public void onStart(Intent intent, int startId) {
        super.onStart(intent, startId);

        View view = findViewById(R.id.activity_main);
        view.setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);


        this.stopSelf();
    }

    public void onDestroy() {
        super.onDestroy();

    }

}

Thanks for your help.

java android app activity

asked by Juanma M 25.01.2017 в 15:41

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1 answer

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score 2 · Accepted Answer

To prevent the notification bar and the action menu from leaving, you can directly change the theme of your app in AndroidManifest.xml to force it to appear in full screen:

android:theme="@android:style/Theme.NoTitleBar.Fullscreen"

Or change the parent of your theme in styles.xml :

<style name="AppTheme" parent="Theme.NoTitleBar.Fullscreen">
</style>

And apply it in the following way in the xml of your Activity :

android:theme="@style/AppTheme"

Or use this code in the onCreate of your Activity:

@Override
public void onCreate(android.os.Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);

    requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                            WindowManager.LayoutParams.FLAG_FULLSCREEN);

    setContentView(R.layout.main);
}