Android使用ION和PhotoView库

Android使用ION和PhotoView库,android,imageview,ion,photoviewer,Android,Imageview,Ion,Photoviewer,每次我尝试在PhotoView库的应用程序上使用photoviewatcher时,我的应用程序都会不断崩溃。我正在使用ION显示图像,并尝试获取PhotoView库,以便放大图像。我目前的代码是: public class massiveImageView extends Activity { ImageView mImageView; PhotoViewAttacher mAttacher; Drawable drawable; @Override

每次我尝试在
PhotoView
库的应用程序上使用
photoviewatcher
时,我的应用程序都会不断崩溃。我正在使用
ION
显示图像,并尝试获取
PhotoView
库,以便放大图像。我目前的代码是:

public class massiveImageView extends Activity {
    ImageView mImageView;
     PhotoViewAttacher mAttacher;
    Drawable drawable;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.massive_image_view);

        // Any implementation of ImageView can be used!
        mImageView = (ImageView) findViewById(R.id.imageViewMassivePage);



        Ion.with(this).load("https://pbs.twimg.com/profile_images/522909800191901697/FHCGSQg0.png").withBitmap().asBitmap()
                .setCallback(new FutureCallback<Bitmap>() {
                    @Override
                    public void onCompleted(Exception e, Bitmap result) {
                        // do something with your bitmap
                        drawable=new BitmapDrawable(result);
                        mImageView.setImageDrawable(drawable);
                    }
                });

                mAttacher = new PhotoViewAttacher(mImageView);

    }
}
说:

 java.lang.NoClassDefFoundError: uk.co.senab.photoview.PhotoViewAttacher

任何帮助都将不胜感激。

我仍然不太明白它为什么不起作用,但我找到了答案,没有添加库的依赖关系,我只是在线找到jar文件,并补充说,现在一切都很好。

 java.lang.NoClassDefFoundError: uk.co.senab.photoview.PhotoViewAttacher