调用裁切图片

Intent intent = new Intent("com.android.camera.action.CROP");
// this will open all images in the Galery
intent.setDataAndType(photoUri, "image/*");
intent.putExtra("crop", "true");
// this defines the aspect ration
intent.putExtra("aspectX", aspectY);
intent.putExtra("aspectY", aspectX);
// this defines the output bitmap size
intent.putExtra("outputX", sizeX);
intent.putExtra("outputY", xizeY);
// true to return a Bitmap, false to directly save the cropped iamge
intent.putExtra("return-data", false);
//save output image in uri
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);

 http://android.git.kernel.org/?p=platform/packages/apps/Contacts.git;a=blob;f=src/com/android/contacts/ui/EditContactActivity.java;h=3e248ea93dc8b17a0d66306aaade9ea398c32408;hb=HEAD