getDisplayCutout() on a null object reference

[sukhcha-in]

Hello i am getting this error:

Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.DisplayCutout android.view.WindowInsets.getDisplayCutout()' on a null object reference
at jp.co.recruit_lifestyle.android.floatingview.FloatingViewManager.findCutoutSafeArea(FloatingViewManager.java:618)

I am starting a service like this:

intent.putExtra(GraphHeadService.EXTRA_CUTOUT_SAFE_AREA, FloatingViewManager.findCutoutSafeArea(this));
ContextCompat.startForegroundService(this, intent);

Is there any problem with FloatingViewManager.findCutoutSafeArea(this)?

My GraphHeadService.java

package in.graphhed.app;

import android.app.Notification;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.graphics.Rect;
import android.os.IBinder;
import android.support.v4.app.NotificationCompat;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.WindowManager;
import android.widget.ImageView;

import jp.co.recruit_lifestyle.android.floatingview.FloatingViewListener;
import jp.co.recruit_lifestyle.android.floatingview.FloatingViewManager;

public class GraphHeadService extends Service implements FloatingViewListener {

    private FloatingViewManager mFloatingViewManager;
    private static final String TAG = "GraphHeadService";
    private static final int NOTIFICATION_ID = 5469;
    public static final String EXTRA_CUTOUT_SAFE_AREA = "cutout_safe_area";

    public GraphHeadService() {
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        if (mFloatingViewManager != null) {
            return START_STICKY;
        }

        final DisplayMetrics metrics = new DisplayMetrics();

        final WindowManager windowManager = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
        windowManager.getDefaultDisplay().getMetrics(metrics);
        final LayoutInflater inflater = LayoutInflater.from(this);
        final ImageView iconView = (ImageView) inflater.inflate(R.layout.layout_floating_widget, null, false);
        iconView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.d(TAG, "Chathead Clicked");
            }
        });

        mFloatingViewManager = new FloatingViewManager(this, this);
        mFloatingViewManager.setFixedTrashIconImage(R.drawable.ic_trash_fixed);
        mFloatingViewManager.setActionTrashIconImage(R.drawable.ic_trash_action);
        mFloatingViewManager.setSafeInsetRect((Rect) intent.getParcelableExtra(EXTRA_CUTOUT_SAFE_AREA));
        final FloatingViewManager.Options options = new FloatingViewManager.Options();
        options.overMargin = (int) (16 * metrics.density);
        mFloatingViewManager.addViewToWindow(iconView, options);

        startForeground(NOTIFICATION_ID, createNotification(this));

        return START_REDELIVER_INTENT;
    }

    @Override
    public void onDestroy() {
        destroy();
        super.onDestroy();
    }

    public void onFinishFloatingView() {
        stopSelf();
    }

    @Override
    public void onTouchFinished(boolean isFinishing, int x, int y) {
        if (isFinishing) {
            Log.d(TAG, "Deleting Soon");
        } else {
            Log.d(TAG, "Deleted "+ getString(x, y));
        }
    }

    private void destroy() {
        if (mFloatingViewManager != null) {
            mFloatingViewManager.removeAllViewToWindow();
            mFloatingViewManager = null;
        }
    }

    private static Notification createNotification(Context context) {
        final NotificationCompat.Builder builder = new NotificationCompat.Builder(context, context.getString(R.string.default_floatingview_channel_id));
        builder.setWhen(System.currentTimeMillis());
        builder.setSmallIcon(R.mipmap.ic_launcher);
        builder.setContentTitle("Title");
        builder.setContentText("Content");
        builder.setOngoing(true);
        builder.setPriority(NotificationCompat.PRIORITY_MIN);
        builder.setCategory(NotificationCompat.CATEGORY_SERVICE);

        return builder.build();
    }

    @Override
    public IBinder onBind(Intent intent) {
        // TODO: Return the communication channel to the service.
        throw new UnsupportedOperationException("Not yet implemented");
    }
}

and my DataReceiverActivity.java

package in.graphhed.app;

import android.content.Intent;
import android.os.Build;
import android.provider.Settings;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Toast;

import jp.co.recruit_lifestyle.android.floatingview.FloatingViewManager;

public class DataReceiverActivity extends AppCompatActivity {

    private TextView intentEcho;
    private static final int SYSTEM_ALERT_WINDOW_PERMISSION = 5469;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_data_receiver);

        Intent receivedIntent = getIntent();
        String receivedText = receivedIntent.getStringExtra(Intent.EXTRA_TEXT);

        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
            Toast.makeText(this, "In App Viewer!", Toast.LENGTH_SHORT).show();
        } else if (Settings.canDrawOverlays(this)) {
            Intent intent = new Intent(this, GraphHeadService.class);
            //intent.putExtra("url",  receivedText);
            intent.putExtra(GraphHeadService.EXTRA_CUTOUT_SAFE_AREA, FloatingViewManager.findCutoutSafeArea(this));
            ContextCompat.startForegroundService(this, intent);
            this.moveTaskToBack(true);
            finish();
        } else {
            Toast.makeText(this, "In App Viewer!", Toast.LENGTH_SHORT).show();
        }

    }

}

[YoshihideSogawa]

Please check on Ver 2.4.3

[sukhcha-in]

@YoshihideSogawa Thank you for an update. Will check out soon.

[sukhcha-in]

@YoshihideSogawa I tried on Pie (Galaxy S10+) It gives me:

E/AndroidRuntime: FATAL EXCEPTION: main
                  Process: in.graphhed.app, PID: 22346
                  android.app.RemoteServiceException: Bad notification for startForeground: java.lang.RuntimeException: invalid channel for service notification: Notification(channel=default_floatingview_channel pri=-2 contentView=null vibrate=null sound=null defaults=0x0 flags=0x42 color=0x00000000 category=service vis=PRIVATE semFlags=0x0 semPriority=0 semMissedCount=0)
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1871)
                      at android.os.Handler.dispatchMessage(Handler.java:106)
                      at android.os.Looper.loop(Looper.java:214)
                      at android.app.ActivityThread.main(ActivityThread.java:7032)
                      at java.lang.reflect.Method.invoke(Native Method)
                      at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964)

[YoshihideSogawa]

Are you adding the following permission to AndroidManifest?

<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />

[sukhcha-in]

@YoshihideSogawa yes, i have already added this.