CODEWITHSUNDEEP
androidimageanimationimageviewrotateanimation
user2593562
user2593562

Reputation: 116

Program stopping when trying to rotate an image

I am new to android programming and am trying to rotate an image.

This is my code:

public class MainActivity extends Activity {

    ImageView x; 
    @Override
    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main); 
        x = (ImageView)findViewById(R.drawable.clippedneedle); 
        RotateAnimation newAnim = new RotateAnimation(0,360); 
        newAnim.setFillAfter(true); 
        newAnim.setDuration(10); 
        x.startAnimation(newAnim); 

    }
}

My layout file is standard and just contains code from an ImageView.

Basically, my program stops running as soon as it opens. The logcat says that the thread is exiting with uncaught exception.

Any help would be much appreciated. Thanks!

Upvotes: 1

Views: 71

Answers (1)

Vikram
Vikram

Reputation: 51571

You are passing the id of a Drawable here:

x = (ImageView)findViewById(R.drawable.clippedneedle);

You need to pass the id of an ImageView. If you have an ImageView in R.layout.activity_main, do the following:

x = (ImageView)findViewById(R.id.myImageViewId);
x.setImageDrawable(getResources().getDrawable(R.drawable.clippedneedle

Here's your code with a few changes:

x = (ImageView)findViewById(R.drawable.clippedneedle); 
RotateAnimation newAnim = new RotateAnimation(0.0f, 360.0f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f); 
newAnim.setFillAfter(true); 
newAnim.setDuration(2000);    // 2 seconds || 2000 milliseconds 
x.startAnimation(newAnim);

There is much more that you can do here. Take a look at Android developer's resource page on Animation.

Upvotes: 1

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