The ultimate solution for Android big picture cropping

According to our analysis and summary, the photo is from the source of photos and albums, and can take action has

• Use bitmap and return data
• Using URIs does not return data

Before we learned that using bitmap may cause the picture to be too large to return the actual size of the picture, I will use the large map URI, small figure bitmap data storage.

We're going to use the URI to save the picture after the photo:

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12	privatestatic finalString IMAGE_FILE_LOCATION = "file:///sdcard/temp.jpg";//temp fileUri imageUri = Uri.parse(IMAGE_FILE_LOCATION);//The Uri to store the big bitmap

It is not difficult to know that we choose the image from the album ACTION is Intent.action_get_content.

Based on an analysis of our last blog post, I have prepared two instances of intent.

One, from the album to cut large map:

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Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null);intent.setType("image/*");intent.putExtra("crop", "true");intent.putExtra("aspectX", 2);intent.putExtra("aspectY", 1);intent.putExtra("outputX", 600);intent.putExtra("outputY", 300);intent.putExtra("scale", true);intent.putExtra("return-data", false);intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());intent.putExtra("noFaceDetection", true); // no face detectionstartActivityForResult(intent, CHOOSE_BIG_PICTURE);

Second, from the album to cut small map

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Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null);intent.setType("image/*");intent.putExtra("crop", "true");intent.putExtra("aspectX", 2);intent.putExtra("aspectY", 1);intent.putExtra("outputX", 200);intent.putExtra("outputY", 100);intent.putExtra("scale", true);intent.putExtra("return-data", true);intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());intent.putExtra("noFaceDetection", true); // no face detectionstartActivityForResult(intent, CHOOSE_SMALL_PICTURE);

Third, the corresponding Onactivityresult can handle the returned data in this way

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switch (requestCode) {case CHOOSE_BIG_PICTURE:    Log.d(TAG, "CHOOSE_BIG_PICTURE: data = " + data);//it seems to be null    if(imageUri != null){        Bitmap bitmap = decodeUriAsBitmap(imageUri);//decode bitmap        imageView.setImageBitmap(bitmap);    }    break;case CHOOSE_SMALL_PICTURE:    if(data != null){        Bitmap bitmap = data.getParcelableExtra("data");        imageView.setImageBitmap(bitmap);    }else{        Log.e(TAG, "CHOOSE_SMALL_PICTURE: data = " + data);    }    break;default:    break;}

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private Bitmap decodeUriAsBitmap(Uri uri){    Bitmap bitmap = null;    try {        bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(uri));    } catch (FileNotFoundException e) {        e.printStackTrace();        return null;    }    return bitmap;}

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Large	Small map

Reprint (http://my.oschina.net/ryanhoo/blog/86853)

The ultimate solution for Android big picture cropping