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:

 <activity android:name="eu.janmuller.android.simplecropimage.CropImage" />

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;
    }
}

Answer 2

I don't know whether this will solve your problem . I created somewhat similar thing for my project adding the functionality to pick image from Camera or Gallery, then showing a fixed cropping window with image zoomin out functionality. Combining Photoview and Cropper tool. Shared the code on Github. You can modify the code to fit in your need. Added an apk file in the project. Use real device for testing camera as emulator doesn't handle camera well. Here's the link to my project.

https://github.com/ozeetee/AndroidImageZoomCrop