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POGetting NullPointer when adding image in Android
 

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  1. POGetting NullPointer when adding image in Android
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    <p>I am trying to set my image in my view at acertain point in my animation. However I am getting a nullpointer exception. I know I am doing a rookie mistake but I cant figure out what I should do... When I set my image onStart()it works fine...But when I set the image in the onAnimationEnd I am getting the null pointer...Please Help!</p> <pre><code>public class PhotoSyncActivity extends Activity implements AnimationListener { private Bitmap[] images; private AnimationPhotoViewA apa1; private AnimationPhotoViewB apa2; private static final int move1 = 1; private static final int move2 = 2; private static final int move3 = 3; private static final int move4 = 4; private static final int move5 = 5; private int animationmove = 0; ArrayList&lt;String&gt; photoPaths; Bitmap resizedimage2= null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.photo_sync_screen); ArrayList&lt;String&gt; photoPaths = new ArrayList&lt;String&gt;(); photoPaths = getAllPhotos(Environment.getExternalStorageDirectory(), photoPaths); images = new Bitmap[photoPaths.size()]; Log.v(ACCESSIBILITY_SERVICE, "photo array!" + photoPaths); apa1 = (AnimationPhotoViewA) findViewById(R.id.animation_viewA); apa2 = (AnimationPhotoViewB) findViewById(R.id.animation_viewB); animationmove = PhotoAnimationProcess.moveOne(this,apa1,animationmove); File imgFile1 = new File(photoPaths.get(0)); File imgFile2 = new File(photoPaths.get(1)); if (imgFile1.exists() &amp;&amp; imgFile2.exists()) { images[0] = decodeFile(imgFile1); images[1] = decodeFile(imgFile2); } } @Override protected void onStart() { // TODO Auto-generated method stub super.onStart(); // RESIZE THE IMAGE TO A STANDARD SIZE Bitmap resizedimage1 = setPictureSize(images[0]); resizedimage2 = setPictureSize(images[1]); // SET IMAGE IN THE VIEW apa1.setImageBitmap(resizedimage1); apa2.setImageBitmap(resizedimage2);//HERE THE CODE WORKS WITH NO PROBLEM!! private ArrayList&lt;String&gt; getAllPhotos(File dir,ArrayList&lt;String&gt; photoPaths) { File[] files = dir.listFiles(); if (files != null) { for (File f : files) { if (f != null) { if (f.isDirectory()) { getAllPhotos(f, photoPaths); } else { String filePath = f.getAbsolutePath(); if (filePath.matches(".*\\.(jpeg|jpg)$")) { photoPaths.add(filePath); } } } } } return photoPaths; } public void onAnimationStart(Animation animation) { // TODO Auto-generated method stub } public void onAnimationEnd(Animation animation) { // TODO Auto-generated method stub switch (animationmove) { case move1: animationmove = PhotoAnimationProcess.moveOne(this, apa1, animationmove); break; case move2: //HERE I AM GETTING THE NULL POINTER WHEN SETTING IMAGEapa2.setImageBitmap(resizedimage2); animationmove = PhotoAnimationProcess.moveTwo(this,apa1,animationmove); break; case move3: animationmove = PhotoAnimationProcess.moveThree(this,apa1,animationmove); break; case move4: animationmove = PhotoAnimationProcess.moveFour(this,apa1,animationmove);; break; case move5: animationmove = PhotoAnimationProcess.moveFive(this,apa1,animationmove); break; default: break; } Log.v(ALARM_SERVICE, "Animation Type" + animation.toString()); } public void onAnimationRepeat(Animation animation) { // TODO Auto-generated method stub } // Downgrade the photos private Bitmap decodeFile(File f) { Bitmap ret = null; try { // Decode image size BitmapFactory.Options o = new BitmapFactory.Options(); o.inJustDecodeBounds = true; BitmapFactory.decodeStream(new FileInputStream(f), null, o); // The new size we want to scale to final int REQUIRED_SIZE = 70; // Find the correct scale value. It should be the power of 2. int scale = 1; while (o.outWidth / scale / 2 &gt;= REQUIRED_SIZE &amp;&amp; o.outHeight / scale / 2 &gt;= REQUIRED_SIZE) scale *= 2; // Decode with inSampleSize BitmapFactory.Options o2 = new BitmapFactory.Options(); o2.inSampleSize = scale; ret = BitmapFactory.decodeStream(new FileInputStream(f), null, o2); } catch (FileNotFoundException e) { e.printStackTrace(); } return ret; } private Bitmap setPictureSize(Bitmap bitmapOrg) { int width = bitmapOrg.getWidth(); int height = bitmapOrg.getHeight(); int newWidth = 250; int newHeight = 250; // calculate the scale - in this case = 0.4f float scaleWidth = ((float) newWidth) / width; float scaleHeight = ((float) newHeight) / height; Matrix matrix = new Matrix(); matrix.postScale(scaleWidth, scaleHeight); // matrix.postRotate(x); // this will create image with new size Bitmap resizedBitmap = Bitmap.createBitmap(bitmapOrg, 0, 0, width, height, matrix, true); return resizedBitmap; } } </code></pre> <p>ERROR:</p> <pre><code>04-08 21:27:14.764: E/AndroidRuntime(1654): FATAL EXCEPTION: main 04-08 21:27:14.764: E/AndroidRuntime(1654): java.lang.NullPointerException 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.graphics.Canvas.throwIfRecycled(Canvas.java:972) 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.graphics.Canvas.drawBitmap(Canvas.java:998) 04-08 21:27:14.764: E/AndroidRuntime(1654): at com.uiu.registrationwizard.activities.AnimationPhotoViewB.drawPicture(AnimationPhotoViewB.java:79) 04-08 21:27:14.764: E/AndroidRuntime(1654): at com.uiu.registrationwizard.activities.AnimationPhotoViewB.onDraw(AnimationPhotoViewB.java:67) 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.view.View.draw(View.java:7014) 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.view.ViewGroup.drawChild(ViewGroup.java:1732) 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1459) 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.view.View.draw(View.java:7017) 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.view.ViewGroup.drawChild(ViewGroup.java:1732) 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1459) 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.view.View.draw(View.java:7017) 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.widget.FrameLayout.draw(FrameLayout.java:357) 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.view.ViewGroup.drawChild(ViewGroup.java:1732) 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1459) 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.view.View.draw(View.java:7017) 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.widget.FrameLayout.draw(FrameLayout.java:357) 04-08 21:27:14.764: E/AndroidRuntime(1654): at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:2054) 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.view.ViewRoot.draw(ViewRoot.java:1632) 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.view.ViewRoot.performTraversals(ViewRoot.java:1335) 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.view.ViewRoot.handleMessage(ViewRoot.java:1991) 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.os.Handler.dispatchMessage(Handler.java:99) 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.os.Looper.loop(Looper.java:150) 04-08 21:27:14.764: E/AndroidRuntime(1654): at android.app.ActivityThread.main(ActivityThread.java:4385) 04-08 21:27:14.764: E/AndroidRuntime(1654): at java.lang.reflect.Method.invokeNative(Native Method) 04-08 21:27:14.764: E/AndroidRuntime(1654): at java.lang.reflect.Method.invoke(Method.java:507) 04-08 21:27:14.764: E/AndroidRuntime(1654): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849) 04-08 21:27:14.764: E/AndroidRuntime(1654): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:607) 04-08 21:27:14.764: E/AndroidRuntime(1654): at dalvik.system.NativeStart.main(Native Method) </code></pre>
    singulars
    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USPaul-Jan
    1. USuser182192
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. COPost the stack trace.
      singulars
      1. POGetting NullPointer when adding image in Android
      1. USm0skit0
    2. COYou should post the method setPictureSize() too
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      1. POGetting NullPointer when adding image in Android
      1. USandreasg
    3. COThanks for taking a look! I added both
      singulars
      1. POGetting NullPointer when adding image in Android
      1. USuser182192
 

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