Question

我刚从ListView转到RecyclerView我遇到了一个问题：我无法让ImageView's onClickListener正常工作。基本上我想要的是在用户点击它时在新活动中以全屏模式显示图像。

这样的事情：

我尝试了什么：

@Override
    public PaletteViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View itemView = LayoutInflater.
                from(parent.getContext()).
                inflate(R.layout.card_view, parent, false);

        return new PaletteViewHolder(itemView);

    }
@Override
    public void onBindViewHolder(PaletteViewHolder holder,final int position) {
        Palette palette = palettes.get(position);
        holder.text1.setText(palette.getName());
        holder.text2.setText(palette.getHexValue());
        final Context context = holder.img.getContext();
        Picasso.with(context)
                .load(DaciaData.DaciaModele[position])
                .placeholder(R.drawable.placeholder)
                .error(R.drawable.error)
                .resizeDimen(R.dimen.list_detail_image_size, R.dimen.list_detail_image_size)
                .centerInside()
                .tag(context)
                .into(holder.img);

        holder.img.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Bundle bundle = new Bundle();
                //add data to your bundle
                bundle.putInt("id", position);
                //create intent
                Intent mainIntent = new Intent(context, Extra1.class);
                //add bundle to intent
                mainIntent.putExtras(bundle);
                //start activity
                context.startActivity(mainIntent);
            }
        });
    }

修改

RecyclerItemClickListener：

public class RecyclerItemClickListener implements RecyclerView.OnItemTouchListener {
    private OnItemClickListener mListener;

    public interface OnItemClickListener {
        void onItemClick(View view, int position);
    }

    GestureDetector mGestureDetector;

    public RecyclerItemClickListener(Context context, OnItemClickListener listener) {
        mListener = listener;
        mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
            @Override public boolean onSingleTapUp(MotionEvent e) {
                return true;
            }
        });
    }

    @Override
    public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {

    }

    @Override public boolean onInterceptTouchEvent(RecyclerView view, MotionEvent e) {
        View childView = view.findChildViewUnder(e.getX(), e.getY());
        if (childView != null && mListener != null && mGestureDetector.onTouchEvent(e)) {
            mListener.onItemClick(childView, view.getChildPosition(childView));
            return true;
        }
        return false;
    }

    @Override public void onTouchEvent(RecyclerView view, MotionEvent motionEvent) { }
}

MainRecyclerView这是我定义RecyclerView以及onItemTouchListener的地方：

@Override
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);

        RecyclerView recyclerView = (RecyclerView) view.findViewById(R.id.recyclerModels);
        LinearLayoutManager linearLM = new LinearLayoutManager(getActivity());
        linearLM.setOrientation(LinearLayoutManager.VERTICAL);
        recyclerView.setLayoutManager(linearLM);

        recyclerView.addOnItemTouchListener(                 
                new RecyclerItemClickListener(getActivity(), new RecyclerItemClickListener.OnItemClickListener() {
                    @Override
                    public void onItemClick(View view, int position) {
                        Bundle bundle = new Bundle();
                        bundle.putInt("id", position);

                        Intent i = new Intent(getActivity(), MainViewPager.class);
                        i.putExtras(bundle);
                        startActivity(i);
                    }
                })
        );

删除recyclerView.addOnItemTouchListener();将解决图片长按的问题，但我无法启动ViewPager，我猜RecyclerItemClickListener出现了问题。

Answer 1

对不起我迟到的回答，我最终解决了这个问题。我所要做的就是删除recyclerView.addOnItemTouchListener(...);，然后在我的适配器中实现View.OnClickListener，然后为OnClickListener和TextView设置ImageView方法，像这样：

public class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {

        protected TextView textView;
        protected ImageView imageView;

        public ContactViewHolder(View v) {
            super(v);
            textView =  (TextView) v.findViewById(R.id.t1);
            imageview = (ImageView)  v.findViewById(R.id.img);

            textView.setOnClickListener(this);
            imageview.setOnClickListener(this);
        }

        @Override
        public void onClick(View v) {    

        if (v.getId() == textView.getId()) {
          Toast.makeText(context, "TextView Clicked!", Toast.LENGTH_LONG).show();
        } else if (v.getId() == imageView.getId()) {
          Toast.makeText(context, "ImageView Clicked!", Toast.LENGTH_LONG).show();
        }
    }

Answer 2

现在，当我点击图片时，就像我点击该行一样，它启动了错误的活动。 ImageView的onClickListener不是工作

使用setTag和getTag

 holder.img.setTag(position);
 holder.img.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {

            Integer pos = (Integer)view.getTag(); 
            // returns an object hence the casting

            Bundle bundle = new Bundle();
            //add data to your bundle

            Log.i("Position is",""+pos.intValue);

            bundle.putInt("id", pos.intValue());
            // get int value
            //create intent
            Intent mainIntent = new Intent(context, Extra1.class);
            //add bundle to intent
            mainIntent.putExtras(bundle);
            //start activity
            context.startActivity(mainIntent);
        }
    });

编辑：

正如pskink建议你只需在ViewHolder中使用点击监听器即可消除setTag和getTag的需要。这将确保您单击正确的行项目并转到下一个活动。

要获得职位，您可以在RecyclerView视图持有者中使用getLayoutPosition()

https://developer.android.com/reference/android/support/v7/widget/RecyclerView.ViewHolder.html#getAdapterPosition%28%29

编辑2：

代码：

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

            Log.d(TAG, "Element at " + getLayoutPosition () + " clicked.");

            Bundle bundle = new Bundle();
            //add data to your bundle
            bundle.putInt("id", getLayoutPosition());
            //create intent
            Intent mainIntent = new Intent(context, Extra1.class);
            //add bundle to intent
            mainIntent.putExtras(bundle);
            //start activity
            context.startActivity(mainIntent);
            }
        });

编辑3：

您的ViewHolder类可以实现接口View.OnClickListener

，而不是匿名内部类

然后只需覆盖onClick并将OnClickListener设置为您的观看次数。

Answer 3

与您有完全相同的问题。需要的RecyclerView

onItemClick
onItemLongClick
onClick行内的视图

如果点击行内的视图，则会调用onClick from the view，以及行上的onItemClick。

解决方案是，为RecyclerView onItemClick返回false，而是将onClick侦听器设置为ViewHolder主行布局（与在行中设置视图侦听器相同，将其设置为行的主要布局）。 / p>

为您的RecyclerView

返回onItemClick的false

@Override 
public boolean onSingleTapUp(MotionEvent e) {
    return false;
}

在onBindViewHolder中获取主行布局，并在那里设置onClickListener

holder.mainRowLayout.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        // Handle row item click
    }
});

如果您需要任何进一步的帮助，请联系我们。

Answer 4

尝试以下代码来帮助您：

#!/bin/bash

>combined.csv
for xml in *.xml
do
  echo "Processing $xml";
  id=$({ xmllint --xpath "string(//customer/id)" $xml; echo ","; } | tr "\n" " ");
  firstname=$({ xmllint --xpath "string(//customer/firstName)" $xml; echo ","; } | tr "\n" " ");
  phonenumber=$(xmllint --xpath "string(//customer/phoneNumbers)" $xml);
  line="${id}${firstname}${phonenumber}\n"
  printf "$line" >> combined.csv
done

在下一个活动中，您可以获得将全屏显示的图像。

 Intent i = new Intent(this, ShowActivity.class);
                i.putExtra("filepath", filepath.get(position));
                startActivity(i);

Answer 5

使用此代码：

holder.img.setId(position);
holder.img.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Bundle bundle = new Bundle();
                //add data to your bundle
                bundle.putInt("id", view.getId());
                //create intent
                Intent mainIntent = new Intent(context, Extra1.class);
                //add bundle to intent
                mainIntent.putExtras(bundle);
                //start activity
                context.startActivity(mainIntent);
            }
        });

Android：处理放置在RecyclerView

5 个答案: