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androidextend

I want to extend View from a Activity class

Currently I have a class called MapActivity that extends AppCompatActivity, and I need this because I have a acitivity_map.xml, but the thing is, I want to extend View, so that I can draw things on this activity.

How can I achive this ?

Solution

  • Recently i had the same question. Here is what i got: Create your own view:

    public class CustomView extends View

    Override the onDraw() method like this:

     @Override
    public void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        canvas.save();
        //draw something
        canvas.restore();
 }

    In your Activity in onCreate:

    setContentView(R.layout.activity_name);
    com.XXX.XXX.CustomView cV = (com.XXX.XXX.CustomView) findViewById(R.id.customView);

    And in the xml:

    <com.XXX.XXX.CustomView
        android:id="@+id/customView"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />