Cropping photos for Android Development

Cropping photos for Android Development

 

 

1. Select a photo from the album for Cropping

Select a photo from the album and crop it:

 

/*** Select a photo from the album for cropping */private void cropFromGallery () {// TODO Auto-generated method stub Intent intent = new Intent (); intent. setAction (Intent. ACTION_PICK); // Pick an item from the data intent. setType (image/*); // select intent from all images. putExtra (crop, true); // It is set to crop intent. putExtra (aspectX, 1); // intent for width ratio of cropping. putExtra (aspectY, 1); // specifies a high proportion of intent cropping. putExtra (outputX, 600); // specifies the width of the cropped intent. putExtra (outputY, 600); // intent crop height. putExtra (scale, true); // supports intent scaling. putExtra (return-data, false); intent. putExtra (MediaStore. EXTRA_OUTPUT, imageUri); // output the cropping result to the specified Uri intent. putExtra (outputFormat, Bitmap. compressFormat. JPEG. toString (); // The intent format of the cropped image. putExtra (noFaceDetection, true); // no face detection startActivityForResult (intent, SELECT_PIC );}

 

 

Display the cropped photo on ImagaView:

 

Case SELECT_PIC: if (resultCode = RESULT_ OK) {try {Bitmap bitmap = BitmapFactory. decodeStream (getContentResolver (). openInputStream (imageUri); // loads the image of the imageUri object to the memory imgShow. setImageBitmap (bitmap);} catch (FileNotFoundException e) {// TODO Auto-generated catch block e. printStackTrace () ;}} break;

 

Program running:

 

 

2. Take a photo from the camera for Cropping

Control the camera to take a photo and save the photo to the specified position:

 

/*** Crop a photo taken from the camera */private void cropFromTake () {// TODO Auto-generated method stub Intent intent = new Intent (); intent. setAction (MediaStore. ACTION_IMAGE_CAPTURE); // sets the Action as the photo intent. putExtra (MediaStore. EXTRA_OUTPUT, imageUri); // Save the photo to the specified URI startActivityForResult (intent, TAKE_PIC );}

 

Crop the prepared photo and display it on the ImageView:

 

case TAKE_PIC:    if (resultCode==RESULT_OK) {        cropImageUri(imageUri, 600, 600, CROP_PIC);    }    break;

 

 

/*** Crop the photo corresponding to the specified uri * @ param imageUri: the photo corresponding to the uri * @ param outputX: cropping width * @ param outputY: cropping height * @ param requestCode: request Code */private void cropImageUri (Uri imageUri, int outputX, int outputY, int requestCode) {Intent intent = new Intent (com. android. camera. action. CROP); intent. setDataAndType (imageUri, image/*); intent. putExtra (crop, true); intent. putExtra (aspectX, 1); intent. putExtra (aspectY, 1); intent. putExtra (outputX, outputX); intent. putExtra (outputY, outputY); intent. putExtra (scale, true); intent. putExtra (MediaStore. EXTRA_OUTPUT, imageUri); intent. putExtra (return-data, false); intent. putExtra (outputFormat, Bitmap. compressFormat. JPEG. toString (); intent. putExtra (noFaceDetection, true); // no face detection startActivityForResult (intent, requestCode );}

 

Program running:

 

 

3. Complete project code:

Package com. jph. cp; import java. io. file; import java. io. fileNotFoundException; import android. support. v7.app. actionBarActivity; import android. content. intent; import android. graphics. bitmap; import android. graphics. bitmapFactory; import android.net. uri; import android. OS. bundle; import android. OS. environment; import android. provider. mediaStore; import android. view. view; import android. widget. imageView;/*** select a photo from the album for cropping and take a photo from the camera for cropping * @ author JPH * Date: 2014.10.09 */public class MainActivity extends ActionBarActivity {private final static int SELECT_PIC = 0x123; private final static int TAKE_PIC = 0x124; private final static int CROP_PIC = 0x125; private Uri imageUri; private ImageView imgShow; @ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. activity_main); // initialize imageUriimageUri = Uri. fromFile (new File (Environment. getExternalStorageDirectory (), test.jpg); imgShow = (ImageView) findViewById (R. id. imgShow) ;}@ Overrideprotected void onActivityResult (int requestCode, int resultCode, Intent data) {// TODO Auto-generated method stubswitch (requestCode) {case SELECT_PIC: if (resultCode = RESULT_ OK) {try {Bitmap bitmap = BitmapFactory. decodeStream (getContentResolver (). openInputStream (imageUri); // loads the image of the imageUri object to the memory imgShow. setImageBitmap (bitmap);} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke. printStackTrace () ;}} break; case TAKE_PIC: if (resultCode = RESULT_ OK) {cropImageUri (imageUri, 600,600, CROP_PIC);} break; case CROP_PIC: if (resultCode = RESULT_ OK) {try {Bitmap bitmap = BitmapFactory. decodeStream (getContentResolver (). openInputStream (imageUri); // loads the image of the imageUri object to the memory imgShow. setImageBitmap (bitmap);} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke. printStackTrace () ;}} break; default: break;} super. onActivityResult (requestCode, resultCode, data);}/*** crop the photo corresponding to the specified uri * @ param imageUri: the photo corresponding to the uri * @ param outputX: crop width * @ param outputY: crop height * @ param requestCode: Request Code */private void cropImageUri (Uri imageUri, int outputX, int outputY, int requestCode) {Intent intent = new Intent (com. android. camera. action. CROP); intent. setDataAndType (imageUri, image/*); intent. putExtra (crop, true); intent. putExtra (aspectX, 1); intent. putExtra (aspectY, 1); intent. putExtra (outputX, outputX); intent. putExtra (outputY, outputY); intent. putExtra (scale, true); intent. putExtra (MediaStore. EXTRA_OUTPUT, imageUri); intent. putExtra (return-data, false); intent. putExtra (outputFormat, Bitmap. compressFormat. JPEG. toString (); intent. putExtra (noFaceDetection, true); // no face detection startActivityForResult (intent, requestCode);} public void cropPic (View view) {switch (view. getId () {case R. id. btnCropFromGallery: // select a photo from the album to crop cropFromGallery (); break; case R. id. btnCropFromTake: // crop cropFromTake (); break; default: break ;}} /*** crop a photo taken from the camera */private void cropFromTake () {// TODO Auto-generated method stubIntent intent = new Intent (); intent. setAction (MediaStore. ACTION_IMAGE_CAPTURE); // sets the Action as the photo intent. putExtra (MediaStore. EXTRA_OUTPUT, imageUri); // Save the photo to the specified URIstartActivityForResult (intent, TAKE_PIC);}/*** select a photo from the album for cropping */private void cropFromGallery () {// TODO Auto-generated method stubIntent intent = new Intent (); intent. setAction (Intent. ACTION_PICK); // Pick an item from the dataintent. setType (image/*); // select intent from all images. putExtra (crop, true); // It is set to crop intent. putExtra (aspectX, 1); // intent for width ratio of cropping. putExtra (aspectY, 1); // specifies a high proportion of intent cropping. putExtra (outputX, 600); // specifies the width of the cropped intent. putExtra (outputY, 600); // intent crop height. putExtra (scale, true); // supports intent scaling. putExtra (return-data, false); intent. putExtra (MediaStore. EXTRA_OUTPUT, imageUri); // output the cropping result to the specified Uriintent. putExtra (outputFormat, Bitmap. compressFormat. JPEG. toString (); // The intent format of the cropped image. putExtra (noFaceDetection, true); // no face detectionstartActivityForResult (intent, SELECT_PIC );}}