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POCustom object click issue in android
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copied!<p>I have created an custom view in android to display ball on screen. Now what I want is when I touch on that ball it should explode in four parts and every part should move different four directions ie up, down, left, right. I know I have to set touch listener to detect touch on ball but then how to create a explode effect?<sub>This issue is solved now</sub>. I'm displaying multiple balls on screen so that user can click on it and explode them.</p> <p>Here is my custom view:</p> <pre><code>public class BallView extends View { private float x; private float y; private final int r; public BallView(Context context, float x1, float y1, int r) { super(context); this.x = x1; this.y = y1; this.r = r; } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); canvas.drawCircle(x, y, r, mPaint); } } </code></pre> <p>SmallBall with similar properties except one that is direction and an explode method to move it in direction and animation flag to stop it moving.</p> <pre><code>private final int direction; private boolean anim; public void explode() { // plus or minus x/y based on direction and stop animation if anim flag is false invalidate(); } </code></pre> <p>My layout xml is as follows:</p> <pre><code><?xml version="1.0" encoding="utf-8"?> <FrameLayout android:id="@+id/main_view" xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#FF66FF33" /> </code></pre> <p>I'm adding BallView and SmallBall to activity class as follows:</p> <pre><code>final FrameLayout mainFrameLayout = (FrameLayout) findViewById(R.id.main_frame_layout); SmallBall[] smallBalls = new SmallBall[4]; smallBalls[0] = new SmallBall(getApplicationContext(), 105, 100, 10, 1, false); smallBalls[0].setVisibility(View.GONE); mainFrameLayout .addView(smallBalls[0]); // create and add other 3 balls with different directions. BallView ball = new BallView(getApplicationContext(), 100, 100, 25, smallBalls); listener = new MyListener(ball); ball.setOnClickListener(listener); mainFrameLayout.addView(ball); </code></pre> <p>I'm adding multiple BallView and their relative SmallBall array at different positions. Now what happens no matter where I click on screen last added BallView starts to explode. After that second last, and so on. So here are 2 issues: </p> <ol> <li>Why it call onClick/onTouch event no matter where I click on screen? It should only call listener event when I click on particular BallView. </li> <li>And second is why BallView starts exploding in reverse manner of how they are added to layout?</li> </ol> <p>My listener class:</p> <pre><code>public void onClick(View v) { BallView ballView = (BallView) v; ballView.setVisibility(View.GONE); //get small balls associated with this ball. //loop through small ball and call their explode method. } </code></pre> <p><sub>I've trimmed code due to character limitation in question.</sub></p>

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