cropImage.java

private void cropImage() {
  	// Use existing crop activity.
		Intent intent = new Intent("com.android.camera.action.CROP");
		intent.setDataAndType(mImageCaptureUri, IMAGE_UNSPECIFIED);

		// Specify image size
		intent.putExtra("outputX", 100);
		intent.putExtra("outputY", 100);

		// Specify aspect ratio, 1:1
		intent.putExtra("aspectX", 1);
		intent.putExtra("aspectY", 1);
		intent.putExtra("scale", true);
		intent.putExtra("return-data", true);
		// REQUEST_CODE_CROP_PHOTO is an integer tag you defined to
		// identify the activity in onActivityResult() when it returns
		startActivityForResult(intent, REQUEST_CODE_CROP_PHOTO);
	}