Android: Crop an Image after Taking it With Camera with a Fixed Aspect Ratio

Question

I'm trying to crop an image after taking it, and my code is as follows:

   private void doTakePhotoAction() {          Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);         intent.putExtra(MediaStore.EXTRA_OUTPUT, MediaStore.Images.Media.EXTERNAL_CONTENT_URI.toString());         intent.putExtra("crop", "true");         intent.putExtra("aspectX", 1);         intent.putExtra("aspectY", 1);         intent.putExtra("outputX", 96);         intent.putExtra("outputY", 96);          try {             intent.putExtra("return-data", true);             startActivityForResult(intent, PICK_FROM_CAMERA);         } catch (ActivityNotFoundException e) {             //Do nothing for now         }     } 

With the above code, I'm able to go to crop mode, and crop the picture. However, the 1:1 aspect ratio is not enforced, and neither is the outputX and outputY. I believe this is because the intent was for taking a picture, not for cropping. I've also written another method to getData() from the Intent, and after that use the following:

Intent intent = new Intent("com.android.camera.action.CROP"); intent.setClassName("com.android.camera", "com.android.camera.CropImage"); 

However, when I do that, I get the following runtime error:

E/AndroidRuntime(14648): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.android.camera/com.android.camera.CropImage}: java.lang.NullPointerException 

Thanks for the help! :)

Answer 1

After doing some reading, I realized it can't be done so simply. My modded Contacts source is at http://github.com/Wysie, you can take a look if you're interested. Also, here's what I did to get it working:

private void doTakePhotoAction() {     // http://2009.hfoss.org/Tutorial:Camera_and_Gallery_Demo     // http://stackoverflow.com/questions/1050297/how-to-get-the-url-of-the-captured-image     // http://www.damonkohler.com/2009/02/android-recipes.html     // http://www.firstclown.us/tag/android/     // The one I used to get everything working: http://groups.google.com/group/android-developers/msg/2ab62c12ee99ba30       Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);      //Wysie_Soh: Create path for temp file     mImageCaptureUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(),                         "tmp_contact_" + String.valueOf(System.currentTimeMillis()) + ".jpg"));      intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, mImageCaptureUri);      try {         intent.putExtra("return-data", true);         startActivityForResult(intent, PICK_FROM_CAMERA);     } catch (ActivityNotFoundException e) {         //Do nothing for now     } }  protected void onActivityResult(int requestCode, int resultCode, Intent data) {     if (resultCode != RESULT_OK) {         return;     }      switch (requestCode) {      case CROP_FROM_CAMERA: {         //Wysie_Soh: After a picture is taken, it will go to PICK_FROM_CAMERA, which will then come here         //after the image is cropped.          final Bundle extras = data.getExtras();          if (extras != null) {             Bitmap photo = extras.getParcelable("data");              mPhoto = photo;             mPhotoChanged = true;             mPhotoImageView.setImageBitmap(photo);             setPhotoPresent(true);         }          //Wysie_Soh: Delete the temporary file                                 File f = new File(mImageCaptureUri.getPath());                     if (f.exists()) {             f.delete();         }          InputMethodManager mgr = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);         mgr.showSoftInput(mPhotoImageView, InputMethodManager.SHOW_IMPLICIT);          break;     }      case PICK_FROM_CAMERA: {         //Wysie_Soh: After an image is taken and saved to the location of mImageCaptureUri, come here         //and load the crop editor, with the necessary parameters (96x96, 1:1 ratio)          Intent intent = new Intent("com.android.camera.action.CROP");         intent.setClassName("com.android.camera", "com.android.camera.CropImage");          intent.setData(mImageCaptureUri);         intent.putExtra("outputX", 96);         intent.putExtra("outputY", 96);         intent.putExtra("aspectX", 1);         intent.putExtra("aspectY", 1);         intent.putExtra("scale", true);         intent.putExtra("return-data", true);                     startActivityForResult(intent, CROP_FROM_CAMERA);          break;      }     } } 

Hope it helps :)

Answer 2

Check out this post. I tested it on my android 1.5 (Htc Magic) and worked perfectly.

Android Works