How to Pass Image from Recyclerview to next Activity

问题

I really don't know how to do this ....... i've tried some tutorial but not worked for me ... i've already done the this with textview but unable to do this with imageview ...

here is my recyclerview adapter

public class RecyclerViewDataAdapter extends RecyclerView.Adapter<RecyclerViewDataAdapter.ViewHolder> {
private static String Title = "title";
public ImageLoader mImageLoader;
//List of superHeroes
List<ListOfData> superHeroes;
private Activity context;

public RecyclerViewDataAdapter(List<ListOfData> superHeroes, Activity context) {
    super();
    //Getting all the superheroes
    this.superHeroes = superHeroes;
    this.context = context;

}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.recyclerview_row, parent, false);
    ViewHolder viewHolder = new ViewHolder(v);
    return viewHolder;
}


@Override
public void onBindViewHolder(ViewHolder holder, int position) {
    ListOfData superHero = superHeroes.get(position);


    mImageLoader = MyApplication.getInstance().getImageLoader();
    mImageLoader.get(superHero.getImageUrl(), ImageLoader.getImageListener(holder.imageView1, R.mipmap.ic_launcher, android.R.drawable.ic_dialog_alert));
    holder.imageView1.setImageUrl(superHero.getImageUrl(), mImageLoader);
    holder.textViewName1.setText(superHero.getName());
    //holder.textViewName2.setText(superHero.getName());
    //holder.textViewRank.setText(String.valueOf(superHero.getRank()));
    //holder.textViewRealName.setText(superHero.getRealName());
    //holder.textViewCreatedBy.setText(superHero.getCreatedBy());
    //holder.textViewFirstAppearance.setText(superHero.getFirstAppearance());

    //String powers = "";

    /* for(int i = 0; i<superHero.getPowers().size(); i++){
    powers+= superHero.getPowers().get(i);
}*/

    //holder.textViewPowers.setText(powers);


}

@Override
public int getItemCount() {
    return superHeroes.size();
}

class ViewHolder extends RecyclerView.ViewHolder {
    public NetworkImageView imageView1;
    public TextView textViewName1;
    public TextView textViewName2;
    public TextView textViewRank;
    public TextView textViewRealName;
    public TextView textViewCreatedBy;
    public TextView textViewFirstAppearance;
    public TextView textViewPowers;

    public ViewHolder(View itemView) {
        super(itemView);
        imageView1 = (NetworkImageView) itemView.findViewById(R.id.thumbnail);
        textViewName1 = (TextView) itemView.findViewById(R.id.category_title_one);
    /* textViewRank= (TextView) itemView.findViewById(R.id.textViewRank);
    textViewRealName= (TextView) itemView.findViewById(R.id.textViewRealName);
    textViewCreatedBy= (TextView) itemView.findViewById(R.id.textViewCreatedBy);
    textViewFirstAppearance= (TextView) itemView.findViewById(R.id.textViewFirstAppearance);
    textViewPowers= (TextView) itemView.findViewById(R.id.textViewPowers);
    */

        imageView1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                ListOfData nextActivitySuperHeroes = (ListOfData) v.getTag();

                Intent intent = new Intent(context, MasterDetail.class);
                intent.putExtra(Title, textViewName1.getText().toString());
                context.startActivity(intent);
            /*BehindTheLayoutFragment fragment = new BehindTheLayoutFragment();
            FragmentTransaction ft = ((AppCompatActivity)context).getFragmentManager().beginTransaction();
            ft.replace(R.id.behind_the_layout_fragment, fragment);
            ft.addToBackStack(null);
            ft.commit(); */
                //((AppCompatActivity)context).getFragmentManager().beginTransaction().replace(R.id.behind_the_layout_fragment, fragment).commit();

            }
        });
    }

}}

And the next Activity code

public class MasterDetail extends AppCompatActivity {
private ImageLoader mImageLoader ;
private String imgUrl = "http://api.androidhive.info/json/movies/2.jpg";
private static String Title = "title";
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.behind_the_layout_fragment);

    Intent i=getIntent();
    String name = i.getStringExtra(Title);


    TextView textView2  = (TextView) findViewById(R.id.category_title_one);

    textView2.setText(name);

    mImageLoader = MyApplication.getInstance().getImageLoader();

    NetworkImageView imageView = (NetworkImageView)findViewById(R.id.thumbnail);
    imageView.setImageUrl(imgUrl, mImageLoader);
}}

回答1:

in your getBindViewHolder in Adapter, Edit some code like below.

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
    final ListOfData superHero = superHeroes.get(position);

    mImageLoader = MyApplication.getInstance().getImageLoader();
    mImageLoader.get(superHero.getImageUrl(), ImageLoader.getImageListener(holder.imageView1, R.mipmap.ic_launcher, android.R.drawable.ic_dialog_alert));
    holder.imageView1.setImageUrl(superHero.getImageUrl(), mImageLoader);
    holder.textViewName1.setText(superHero.getName());

    holder.imageView1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent(context, MasterDetail.class);
            intent.putExtra(Title, superHero.getName());
            intent.putExtra("URL", superHero.getImageUrl());
            context.startActivity(intent);
        }
    });
}    

it will be help.

p. s. In MasterDetail, imgUrl already given. if you add

imgUrl = i.getStringExtra("URL");

it will work.

来源：https://stackoverflow.com/questions/37257091/how-to-pass-image-from-recyclerview-to-next-activity