how to zoom + crop a image and display the croped image on imageview

Question

I am making android app in which I have a scenario that I pick an image from gallery, crop it and show it on imageview. Now at the time of cropping I want to zo

Answer 1

I am using cropimage library from Github. It fits your requirement well. This is how I use this library in my project. Add this line to your manifest file:

Select image from gallery or camera and call this function:

public void runCropImage(String path) {
    Intent intent = new Intent(this, CropImage.class);
    intent.putExtra(CropImage.IMAGE_PATH, path);
    intent.putExtra(CropImage.SCALE, true);
    intent.putExtra(CropImage.ASPECT_X, 2);//change ration here via intent
    intent.putExtra(CropImage.ASPECT_Y, 2);
    startActivityForResult(intent, REQUEST_CODE_CROP_IMAGE);//final static int 1
}

And in your onActivityResult:

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    // TODO Auto-generated method stub
    super.onActivityResult(requestCode, resultCode, data);
    switch (requestCode) {
    // gallery and camera ommitted
    case REQUEST_CODE_CROP_IMAGE:
        String path = data.getStringExtra(CropImage.IMAGE_PATH);
        // if nothing received
        if (path == null) {
            return;
        }
        // cropped bitmap
         Bitmap bitmap = BitmapFactory.decodeFile(path);
        imageView.setImageBitmap(bitmap);
        break;
    default:
        break;
    }
}