I have retrieved Images in the RecyclerView , now i want when each Image item is clicked , the Image saves itself into the gallery.
Here it's how i set my Image to the ImageView in the Adapter.
viewHolder.setImage(c, model.getEventImage());
then , here its how i was handling the click Event in the Adapter.
viewHolder.imagePost.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
viewHolder.SaveImage(viewHolder.imagePost);
}
});
And this is my Viewholder class where i declared my ImageView.
public static class BlogViewHolder extends RecyclerView.ViewHolder{
View mView;
private ImageView imagePost;
private ImageView save_image_blog;
private FullscreenVideoLayout videoLayout;
private Context cx;
ImageView videoView;
public BlogViewHolder(View itemView) {
super(itemView);
mView=itemView;
imagePost =(ImageView)mView.findViewById(R.id.post_image);
save_image_blog =(ImageView)mView.findViewById(R.id.save_image_blog);
videoLayout = (FullscreenVideoLayout) mView.findViewById(R.id.post_video);
videoView = (ImageView) mView.findViewById(R.id.videoview);
}
public void setImage(final Context c,final String imageUrl) {
int size = (int) Math.ceil(Math.sqrt(MAX_WIDTH * MAX_HEIGHT));
//
Picasso.with(c).load(imageUrl).error(R.mipmap.add_btn).placeholder(R.mipmap.add_btn)
.transform(new BitmapTransform(MAX_WIDTH, MAX_HEIGHT))
.skipMemoryCache()
.networkPolicy(NetworkPolicy.OFFLINE).into(imagePost, new Callback() {
@Override
public void onSuccess() {
}
@Override
public void onError() {
//Reloading an image again ...
Picasso.with(c).load(imageUrl).error(R.mipmap.add_btn).placeholder(R.mipmap.add_btn)
.into(imagePost);
}
});
}
public void SaveImage(ImageView img){
img.buildDrawingCache();
Bitmap bmp = img.getDrawingCache();
File storageLoc = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES); //context.getExternalFilesDir(null);
File file = new File(storageLoc, "Pixsar" + ".jpg");
try{
FileOutputStream fos = new FileOutputStream(file);
bmp.compress(Bitmap.CompressFormat.JPEG, 100, fos);
fos.close();
scanFile(cn, Uri.fromFile(file));
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
Toast.makeText(cn,"Image Saved to gallery ",Toast.LENGTH_LONG).show();
}
}
The issue is when i try to click on the Image i get a null pointer , below is the logcat.
java.lang.NullPointerException
at company.override.huzykamz.pixsar.BlogScrolling$BlogViewHolder.SaveImage(BlogScrolling.java:343)
at company.override.huzykamz.pixsar.BlogScrolling$2$1.onClick(BlogScrolling.java:210)
at android.view.View.performClick(View.java:4438)
at android.view.View$PerformClick.run(View.java:18422)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5001)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
Below are the specific lines.
at company.override.huzykamz.pixsar.BlogScrolling$BlogViewHolder.SaveImage(BlogScrolling.java:343)
at company.override.huzykamz.pixsar.BlogScrolling$2$1.onClick(BlogScrolling.java:210)
My full Adapter is below
try {
FirebaseRecyclerAdapter<Posts, BlogScrolling.BlogViewHolder> firebaseRecyclerAdapter = new FirebaseRecyclerAdapter<Posts, BlogScrolling.BlogViewHolder>(Posts.class,
R.layout.item_activity,
BlogScrolling.BlogViewHolder.class,
mDatabase) {
@Override
protected void populateViewHolder(final BlogScrolling.BlogViewHolder viewHolder, final Posts model, final int position) {
final String key_post = getRef(position).getKey();
final String videoUrl = model.getEventVideo();
try {
viewHolder.setTitle(model.getEventTitle());
viewHolder.setDesc(model.getEventDescription());
viewHolder.setImage(c, model.getEventImage());
viewHolder.setGif(c,model.getEventVideo());
viewHolder.imagePost.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
BlogViewHolder holder = (BlogViewHolder)(v.getTag());
holder.SaveImage(holder.imagePost);
}
});
viewHolder.videoView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Toast.makeText(getApplicationContext()," position "+ position,Toast.LENGTH_LONG);
Intent i = new Intent(BlogScrolling.this,VideoActivity.class);
i.putExtra("VideoUrl", videoUrl);
startActivity(i);
}
});}
catch (NullPointerException e){
}
// final String key_post_image = getRef(position).getKey();
}
};
mRecyclerview.setAdapter(firebaseRecyclerAdapter);
