android - fragment 和 ImageView 中的 setOnItemClickListener

Question

当我想使用 setOnItemClickListener 时，我使用下面的

GridView gridview = (GridView) findViewById(R.id.gridview);
gridview.setAdapter(new ImageAdapter(Tab1Fragment.getContext(null)));
gridview.setOnItemClickListener(new OnItemClickListener() {

    public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
            // Send intent to SingleViewActivity
            Intent i = new Intent(getApplicationContext(), SingleViewActivity.class);
           // Pass image index
           i.putExtra("id", position);
           startActivity(i);
    } 
});

但是对于下面的代码，我不能像上面那样做:

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.gridview1, null);
    GridView listView = (GridView) view.findViewById(R.id.mainGrid1);
    listView.setAdapter(new Adapter());
    GridView.setOnItemClickListener(new OnItemClickListener() {         
        public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
            // Send intent to SingleViewActivity
            Intent i = new Intent(getApplicationContext(), SingleViewActivity.class);
            // Pass image index
            i.putExtra("id", position);
            startActivity(i);
        }
    });
    return view;
}

这是一张错误图片

Answer 1

为什么要使用类名 Gridview 而不是声明为 listview 的 gridview 变量

错误代码:-

GridView.setOnItemClickListener(new OnItemClickListener() {         
           public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
                    // Send intent to SingleViewActivity
               Intent i = new Intent(getApplicationContext(), SingleViewActivity.class);
               // Pass image index
               i.putExtra("id", position);
               startActivity(i);
               } });

将上面的代码改为

listView.setOnItemClickListener(new OnItemClickListener() {         
           public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
                    // Send intent to SingleViewActivity
               Intent i = new Intent(getApplicationContext(), SingleViewActivity.class);
               // Pass image index
               i.putExtra("id", position);
               startActivity(i);
               } });