在自定义视图上叠加EditView

Question

I have had varying success trying to overlay my custom view with an EditView .

The solution needs to incorporate the fact that my custom view does various calculations which are performed when the canvas is drawn. Calculations such as working out the center X and Y cordinates, dimensions of canvas etc.

These calculation will be used to position the EditText on the screen.

So far I have figured out that a RelativeLayout is the way to go in regard to the overlaying.

The best solution so far (which is not ideal) is to create a custom RelativeLayout , see below:

public class MyCustomRL extends RelativeLayout {

    public MyCustomRL(Context context) {
        super(context);
        initView(context);
    }

    public MyCustomRL(Context context, AttributeSet attrs) {
        super(context, attrs);
        initView(context);
    }

    public MyCustomRL(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        initView(context);
    }

    protected void initView(Context context){

        LayoutInflater inflater = LayoutInflater.from(context);
        SeekBar_Speedometer v_speedometer = (SeekBar_Speedometer) inflater.inflate(R.layout.rl_custom_speedometer, this, false);

        addView(v_speedometer);

        RelativeLayout rl_comment = (RelativeLayout) inflater.inflate(R.layout.rl_edittext_comment, this, false);

        EditText edit = (EditText) rl_comment.findViewById(R.id.edittext_comment);
        edit.setText("Text altered at runtime");

        rl_comment.setX(112);
        rl_comment.setY(117);
        //Log.v("WHATEVER","X: "+v_speedometer.centerX); // = 0
        //rl_comment.setX(v_speedometer.centerX);
        //rl_comment.setY(v_speedometer.centerY);

        addView(rl_comment);
    }
}

This essentially works, the EditText is positioned at those static coordinates. However I want the EditText to be placed at the v_speedometer.centerX and v_speedometer.centerY coordinates, but they are 0 because the v_speedometer view has not been drawn yet!!!

How should I be doing this?

Answer 1

If you didn't found any solution yet, You can write an interface which will act as your speedometer hasDrawn listener. It means whenever your speedometer will be drawn just it will post notification to the class implementing your EditText and then set their coordinates again in your CustomView or UI .