Call Camera or Gallery Intent to return a photo

1.1  Gallery

Step 1: Start Intent

Start from internal storage.

static final int GALLERY = 1;  // The request code …  private void pickPhoto() {                Intent intent = new Intent(Intent.ACTION_PICK);                 intent.setType("image/*");                 startActivityForResult(intent, GALLERY); }

Or start from external storage.

Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);                 intent.setType("image/*");                 startActivityForResult(intent, GALLERY);

Step 2: Activity callback

1. Method 1: Use MediaStore to get the image.

protected void onActivityResult(int requestCode, int resultCode,                                     Intent intent) {         super.onActivityResult(requestCode, resultCode, intent);         if (requestCode == GALLERY) {     //check the request code, to find the correct request         if (resultCode == RESULT_OK) {             Uri photoUri = intent.getData();             if (photoUri != null) {                 try {                     Bitmap m_bmOCRBitmap = MediaStore.Images.Media.getBitmap(this                             .getContentResolver(), photoUri);                     Drawable drawable = new BitmapDrawable(this.getResources(), m_bmOCRBitmap);                     gridview.setBackground(drawable);                 } catch (Exception e) {                     e.printStackTrace();                 }             }         }         }     }

photoUri is something like this, “content://media/external/images/media/3951”or “content://com.android.providers.media.documents/document/image:3951”(Android 4.4). It represents the photo, need to use ContentResolver to get the file.

Note: setBackground() is for API level 16 above, for API level less than 16, please use setBackgroundDrawable() instead.

Method 2: Use MediaStore to get the image.

String[] filePathColumn = {MediaStore.Images.Media.DATA};                     Cursor cursor = getContentResolver().query(photoUri, filePathColumn, null, null, null);                     cursor.moveToFirst();                     int columnIndex = cursor.getColumnIndex(filePathColumn[0]);                     String filePath = cursor.getString(columnIndex);                     cursor.close();                     m_bmOCRBitmap = BitmapFactory.decodeFile(filePath);

Step 3: Get permission

Should get the permission to read from external memory.

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

1.2  Camera

Step 1: Start Intent

static final int CAMERA = 1337;  // The request code …                 Intent cameraIntent = new Intent(                         android.provider.MediaStore.ACTION_IMAGE_CAPTURE);                 startActivityForResult(cameraIntent, CAMERA);

If want to save the captured file or want to crop the file, it needs to start as below.

Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");     /*create instance of File with name img.jpg*/     File file = new File(Environment.getExternalStorageDirectory()+File.separator + "img.jpg");     /*put uri as extra in intent object*/     intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(file));     /*start activity for result pass intent as argument and request code */     startActivityForResult(intent, CAMERA);

Step 2: Activity callback

protected void onActivityResult(int requestCode, int resultCode,                                     Intent intent) {         super.onActivityResult(requestCode, resultCode, intent);         if (requestCode == CAMERA) {     //check the request code, to find the correct request             if (resultCode == RESULT_OK) {                 try {                     Bitmap photo = (Bitmap) intent.getExtras().get("data");                     //ByteArrayOutputStream stream = new ByteArrayOutputStream();                     //photo.compress(Bitmap.CompressFormat.PNG, 100, stream);                     //byte[] byteArray = stream.toByteArray();                     //strAttachmentCoded = new String(byteArray);                     Drawable drawable = new BitmapDrawable(this.getResources(), photo);                     gridview.setBackground(drawable);                 } catch (Exception e) {                     e.printStackTrace();                 }             }         }     }

Note: setBackground() is for API level 16 above, for API level less than 16, please use setBackgroundDrawable() instead.

Step 3: AndroidManifest.xml

Enable camera and get permission.

<uses-permission android:name="android.permission.CAMERA" />     <uses-feature android:name="android.hardware.camera" />     <uses-feature android:name="android.hardware.camera.autofocus" />    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

Reference: http://developer.android.com/training/camera/photobasics.html

1.3  Croping image for small size return data

Step 1: Start Intent

static final int CROP = 3;  // The request code …                         Intent cropIntent = new Intent("com.android.camera.action.CROP");                         cropIntent.setDataAndType(photoUri, "image/*");                         cropIntent.putExtra("outputX", 96);                         cropIntent.putExtra("outputY", 96);                         cropIntent.putExtra("aspectX", 1);                         cropIntent.putExtra("aspectY", 1);                         cropIntent.putExtra("scale", true);                         cropIntent.putExtra("return-data", true);   // For small size photo only                         startActivityForResult(cropIntent, CROP);

Step 2: Activity callback

protected void onActivityResult(int requestCode, int resultCode,                                     Intent intent) {         super.onActivityResult(requestCode, resultCode, intent);         if (requestCode == CROP) {     //check the request code, to find the correct request             if (resultCode == RESULT_OK) {                 try {                     Bitmap photo = (Bitmap) intent.getExtras().get("data");                     Drawable drawable = new BitmapDrawable(this.getResources(), photo);                     gridview.setBackground(drawable);                 } catch (Exception e) {                     e.printStackTrace();                 }             }         }     }

Note: setBackground() is for API level 16 above, for API level less than 16, please use setBackgroundDrawable() instead.

1.3  Croping image for large size return data

Step 1: Create a new file and get the Uri

private Uri getTempUri() {         return Uri.fromFile(getTempFile());     }     private File getTempFile() {         if (isSDCARDMounted()) {             File f = new File(Environment.getExternalStorageDirectory(),"Picture.jpg");   //Path should be the existing folder path             try {                 f.createNewFile();             } catch (Exception e) {                 // TODO Auto-generated catch block                 Log.v("log_tag", "get file failed!");             }             return f;         } else {             return null;         }     }     private boolean isSDCARDMounted(){         String status = Environment.getExternalStorageState();         if (status.equals(Environment.MEDIA_MOUNTED))             return true;         return false;     }

Step 2: Start Intent

static final int CROP = 3;  // The request code …                         Intent cropIntent = new Intent("com.android.camera.action.CROP");                         cropIntent.setDataAndType(photoUri, "image/*");                         cropIntent.putExtra("scale", true);                         cropIntent.putExtra("return-data", false);   // For large size photo                         cropIntent.putExtra(MediaStore.EXTRA_OUTPUT, getTempUri());                         cropIntent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());                         startActivityForResult(cropIntent, CROP);

Step 3: Activity callback

protected void onActivityResult(int requestCode, int resultCode,                                     Intent intent) {         super.onActivityResult(requestCode, resultCode, intent);         if (requestCode == CROP) {     //check the request code, to find the correct request             if (resultCode == RESULT_OK) {                 File tempFile = getTempFile();                 String temppath = tempFile.getPath();                 //FileInputStream fileis = null;                 Log.v("log_tag", "File path:" + temppath);                 try {                     //fileis = new FileInputStream(tempFile);                     Bitmap m_bmp = BitmapFactory.decodeFile(temppath);   // Get bmp from file path                     //Bitmap m_bmp = BitmapFactory.decodeStream(fileis);   // Get bmp from file input stream                     Drawable drawable = new BitmapDrawable(this.getResources(), m_bmp);                     Log.v("log_tag", "first image : "+ m_bmp);                     gridview.setBackground(drawable);                     Log.v("log_tag", "Change background");                     //Now you can upload this bitmap to server or do something else.                 } catch (Exception e) {                     e.printStackTrace();                 }             }         }     }

Note: setBackground() is for API level 16 above, for API level less than 16, please use setBackgroundDrawable() instead.

Step 4: AndroidManifest.xml

Enable camera and get permission.

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

Reference: http://www.mvwsolutions.com/crop_large_photos_with_android