Android GridView可点击图像视图

Question

我正在设计一个Gridview，其中每个项目都有一个TextView和ImageView。我试图找到关于如何使ImageView可点击以及GridView项目本身(两者都会触发不同的方法())的教程(逐步更新和清晰的教程)。

这就是我目前掌握的：

Activity.java

String[] newList;
for(int i=0; i < 6; i++ {
    newList[i] = "Item" + i;
}

GridView GV = (GridView) getActivity().findViewById(R.id.sexp_fav);
GV.setAdapter(new GVAdapter(getActivity(), newList)); // passing Activity and List data to adapter
GV.setOnItemClickListener(new AdapterView.OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView arg0, 
        View arg1, int position, long arg3) {

    }
});

GV适配器.java

public class GVAdapter extends BaseAdapter {

    private Context mContext;
    private LayoutInflater mInflator;

    String mEntries[];   
    public GVAdapter (Context context, String[] entries) {
        mContext = context;
        mInflator = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        mEntries = entries; 
    }

    @Override
    public int getCount() {
        return mEntries.length;
    }

    @Override
    public Object getItem(int position) {
        return position;
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        if(convertView == null) {
            convertView = mInflator.inflate(R.layout.GVItemLayout, parent, false);
        }
        return convertView;
    }
}

结果：

-------------------------
                |       |
Item1           |Image1 |
                |       |
-------------------------
-------------------------
                |       |
Item2           |Image2 |
                |       |
-------------------------
...

当Item1（Textview）被点击时，它应该点击整个Item并触发GridView的OnItemClickListener，但是当Image1被点击时，它应该触发一个名为itemMethod（String itemName）的方法，对于这个方法，应该传递相应的Item名称，所以如果Image1被点击，它应该将“Item1”作为字符串传递给方法（）。

任何帮助都将不胜感激。非常感谢。

Answer 1

您只需要在getview方法上添加一个click listener

@Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ImageView image;
        if(convertView == null) {
            convertView = mInflator.inflate(R.layout.GVItemLayout, parent, false);
        }
       image= (ImageView) convertView.findViewById(R.id.image); 
       image.setOnClickListener(new OnClickListener() {
              public void onClick(View v) {
            // Call the method you need to call on ImageView click event
          }
       });
        return convertView;
    }

Answer 2

在GVAdapter.java中创建一个静态类ViewHolder。

public static class ViewHolder {
    public TextView myTextView;
    public ImageView myImageView;
    public FrameLayout myFrameLayout;
    public RelativeLayout myRelativeLayout;
 // whatever view
}

在您的getView（int，View，ViewGroup）中：

ViewHolder holder = null;

    if (convertView == null) {

        convertView = mInflater.inflate(R.layout.layout_for_each_grid_item, 
                                          parent, false);

        holder = new ViewHolder();
        holder.myTextView = (TextView) convertView
                .findViewById(R.id.myTextView);         
        holder.myImageView = (ImageView) convertView
                .findViewById(R.id.myImageView);            
        holder.myFrameLayout = (FrameLayout) convertView
                .findViewById(R.id.myFrameLayout);
        holder.myRelativeLayout = (RelativeLayout) convertView
                .findViewById(R.id.myRelativeLayout);           

        convertView.setTag(holder);
    } else {
        holder = (ViewHolder) convertView.getTag();
    }

final MyObject info = (MyObject) getItem(position);


// As per your requirement, we can set a `OnClickListener` to the ImageView here

holder.myImageView.setOnClickListener(new OnClickListener() {
    public void onClick(View v) {
        // Call the method you need to call on ImageView click event
        // Use reference to `info` if you want
    }
});

return convertView;
// Done