CODEWITHSUNDEEP
android
Mateu
Mateu

Reputation: 2698

Add a view on top of all the Activities

I'm developing an Android Application. I want to be able to add one view by code, that is drawn in top of all the activities on the application.

I've tried to add it to the window manager:

LayoutInflater inflater = activity.getLayoutInflater();
layout = inflater.inflate(R.layout.toast_layout, null);

WindowManager.LayoutParams params = new WindowManager.LayoutParams();
params.gravity = Gravity.BOTTOM;
params.height = WindowManager.LayoutParams.WRAP_CONTENT;
params.width = WindowManager.LayoutParams.WRAP_CONTENT;
params.type = WindowManager.LayoutParams.TYPE_TOAST;
final WindowManager mWindowManager = (WindowManager);
activity.getApplicationContext().getSystemService(Context.WINDOW_SERVICE);
                mWindowManager.addView(layout, params);

However, adding it like this I face two problems:

1.The layout is still displayed when I exit my app.

2.The layout does not respont to Click events.

Is there another solution to achieve this?

Thanks.

Upvotes: 24

Views: 23804

Answers (3)

Gopal Gopi
Gopal Gopi

Reputation: 11131

change LayoutParams type from TYPE_TOAST to TYPE_APPLICATION, and delete previous flags I have suggested,

and create one BaseActivity for all activities in your app, in that Activity in onResume() add this View to WindowManager and in onPause(), remove that View like,

  windowManager.removeView(view);

Upvotes: 8

Mateu
Mateu

Reputation: 2698

In order to manage the show/view of the view I've used the solution proposed by Gopal. I've attached onStop and onResume events so that the view is hidden when exiting application.

For the click events, I've realized that the type toast does not respond to click events. Therefore I've changed the type

params.type = WindowManager.LayoutParams.TYPE_TOAST;

to 

params.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;

I've to add the following permision too:

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

Upvotes: 5

Biraj Zalavadia
Biraj Zalavadia

Reputation: 28484

1) Create BaseActivity which extends Activity.

2) Now your all activity should extends BaseActivity instead Activity

3) Override setContentView() method.

4) create blank vertical linearLayout in this method.

5) Add your topView in this layout

6) And then add inflated view in this linearlayout

7) And finally call super.setContentView(passLinearLayoutHere)

How to Implement this ?

import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.LinearLayout;

public class BaseActivity extends Activity {

    @Override
    public void setContentView(int resId) {

        LinearLayout screenRootView = new LinearLayout(this);
        screenRootView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
                LinearLayout.LayoutParams.MATCH_PARENT));
        screenRootView.setOrientation(LinearLayout.VERTICAL);

        // Create your top view here
        View topView = new View(this); // Replace this topview with your view 

        LayoutInflater inflater = (LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        View screenView = inflater.inflate(resId, null);
        topView.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                           //You will get onclick here of your topview in whatever screen it is clicked
            }
        });

        screenRootView.addView(topView);
        screenRootView.addView(screenView);

        super.setContentView(screenRootView);
    }

}

Upvotes: 9

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