Add a view on top of all the Activities

Question

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.

Answer 1

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);
    }

}