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POAdd zoom to an imageview in Android
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  1. POAdd zoom to an imageview in Android
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    copied!<p>I want to add zoom in my Android app. I have tried this code, but it just zooms in and out in the middle of the image and I want to apply the zoom on the whole image.</p> <p>In the same image, can I put a button in some areas in the image?</p> <pre><code>import android.content.Context; import android.graphics.Canvas; import android.graphics.drawable.Drawable; import android.view.KeyEvent; import android.view.View; public class Zoom extends View { private Drawable image; private int zoomControler=20; public Zoom(Context context) { super(context); image=context.getResources().getDrawable(R.drawable.icon); setFocusable(true); } @Override protected void onDraw(Canvas canvas) { // TODO Auto-generated method stub super.onDraw(canvas); //Here you can control the width and height of the images........ this line is very important image.setBounds((getWidth()/2)-zoomControler, (getHeight()/2)-zoomControler, (getWidth()/2)+zoomControler, (getHeight()/2)+zoomControler); image.draw(canvas); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if(keyCode==KeyEvent.KEYCODE_DPAD_UP)// zoom in zoomControler+=10; if(keyCode==KeyEvent.KEYCODE_DPAD_DOWN) // zoom out zoomControler-=10; if(zoomControler&lt;10) zoomControler=10; invalidate(); return true; } } </code></pre> <p>And this code</p> <pre><code>import android.app.Activity; import android.os.Bundle; public class zooming extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); setContentView(new Zoom(this)); } } </code></pre> <p>How do I fix this problem?</p>
 

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