CODEWITHSUNDEEP
javaandroidviewandroid-activity
Divergent
Divergent

Reputation: 141

Java - Opening a new View from a seperate class

Right now I have my MainActivity.java that extends the Activity class.

package com.divergent.tapdown1;

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;

public class MainActivity extends Activity {

@Override
public void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   View PlayScreen = new PlayScreen(this);
   setContentView(PlayScreen);
   PlayScreen.setBackgroundColor(Color.BLACK);
}
}

This opens PlayScreen which extends View. I want to be able to open the new LoseScreen that I created from PlayScreen when a certain event occurs. The problem is the setContentView() is obviously part of the Activity class. How can I get around this?

Thanks!

EDIT:

        if (playerBounds.bottom > rowBlock.top && playerBounds.top < rowBlock.bottom && (playerBounds.left < blockX1[row] || playerBounds.right > blockX2[row])) {

            ViewGroup parent = (ViewGroup) getParent();
            finalScore = score;

            parent.addView(new PauseScreen(getContext()));
            parent.bringToFront();
            parent.setBackgroundResource(R.drawable.pausebackground);

        }

Upvotes: 0

Views: 65

Answers (1)

Allen G
Allen G

Reputation: 1200

There are several approaches you can take:

  • You can create a container View (e.g. a FrameLayout), use it as your root view, and add the LoseScreen to it and remove the PlayScreen from it. You can then pass a reference to the container around if some other code needs to add/remove views.

    View playScreen = new PlayScreen(this);
View container = new FrameLayout(this);

playScreen.setRootView(container);

container.addView(playScreen);
setContentView(container);


  • You can pass a reference to MainActivity to the class that creates the LoseScreen. Since setContentView is a public method, you can then just call setContentView on it, e.g.:

    Activity mainActivity = this;
playScreen.setMainActivity(mainActivity);

    Then from within PlayScreen:

    mainActivity.setContentView(new LoseScreen(getContext()));


  • From within PlayScreen, you can get the parent view using getParent() and then, similar to the first approach, add the LoseScreen to it and remove the PlayScreen.

    ViewGroup parent = (ViewGroup)getParent();
parent.addView(new LoseScreen(getContext()));
parent.removeView(this);

Upvotes: 1

Related Questions