扩展活动的 Listview 上的 setOnItemClickListener

Question

更新：我找到了解决方案 删除

v.setFocusable(true); 代码中的v.setClickable(true);

并且只添加

v.setEnabled(true);

并在我的 xml (ListView) 中添加

android:drawSelectorOnTop="true" android:focusable="true"

---

当我点击它时，没有任何反应，甚至列表视图也没有焦点。

我已尝试添加所有这些：

           v.setClickable(true);
           v.setEnabled(true); 
           v.setFocusable(true);

只有这样我才能添加以下代码：

但这并不能确定点击的是什么项目

How to handle ListView click in Android

结果还是一样。

这是代码：

public class AppsInspectorActivity extends Activity {
     /** Called when the activity is first created. */
     @Override
        public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
//[...]
    ListView app_listView = (ListView)findViewById(R.id.listview);

// I try setOnItemClickListene here - 1
    app_listView.setOnItemClickListener(new OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View view,
                int position, long id) {
            Toast.makeText(getApplicationContext(), "I Clicked on Row " + position + ".", Toast.LENGTH_SHORT).show();

        }
    });
}

适配器

 public class AppAdapter extends BaseAdapter {

            Context context;
            ArrayList<AppInfo> dataList=new ArrayList<AppInfo>();
            public AppAdapter(Context context,ArrayList<AppInfo> inputDataList)
            {

                this.context = context;
                dataList.clear();
                for(int i=0;i<inputDataList.size();i++)
                {
                    dataList.add(inputDataList.get(i));
                }
            }
            public int getCount() {
                // TODO Auto-generated method stub
                return dataList.size();
            }

            public Object getItem(int position) {
                // TODO Auto-generated method stub
                return dataList.get(position);
            }

            public long getItemId(int position) {
                // TODO Auto-generated method stub
                return position;
            }

            public View getView(int position, View convertView, ViewGroup parent) {

                View v=convertView;
                final AppInfo appUnit = dataList.get(position);

                ListView app_listView = (ListView)findViewById(R.id.listview);

                /** Remove this , i just try to add to see setOnItemClickListener will work at here or not **/
                 app_listView.setOnItemClickListener(new OnItemClickListener() {
                    public void onItemClick(AdapterView<?> parent, View view,
                      int position, long id) {
                    Toast.makeText(getApplicationContext(), "I Clicked on Row " + position + ".", Toast.LENGTH_SHORT).show();
                  }
                });

                if(v==null)
                {
                    LayoutInflater vi=(LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                    v=vi.inflate(R.layout.app_row, null);
                    v.setClickable(true);
                    v.setEnabled(true); 
                    v.setFocusable(true);           
                }


                TextView appName=(TextView)v.findViewById(R.id.appName);
                ImageView appIcon=(ImageView)v.findViewById(R.id.AppIcon);

                if(appName!=null)
                    appName.setText(appUnit.appName);
                if(appIcon!=null)
                    appIcon.setImageDrawable(appUnit.appIcon);
                return v;
            }
         }
 }
}

Answer 1

您能否发布main.xml 布局。在我看来，您在列表视图之上还有另一个视图正在消耗触摸事件。

Answer 2

我通过删除找到了解决方案

v.setFocusable(true); v.setClickable(true); in the code

并且只添加

v.setEnabled(true);

并在我的 xml (ListView) 中添加

android:drawSelectorOnTop="true" android:focusable="true"

Answer 3

你好，去掉Adapter的getView中的setOnItemClickListener。参考这个listView

Answer 4

使用AppsInspectorActivity.this 而不是getApplicationContext()

  public class AppsInspectorActivity extends Activity {
     /** Called when the activity is first created. */
     @Override
        public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
//[...]
    ListView app_listView = (ListView)findViewById(R.id.listview);

// I try setOnItemClickListene here - 1
    app_listView.setOnItemClickListener(new OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View view,
                int position, long id) {
            Toast.makeText(AppsInspectorActivity.this, "I Clicked on Row " + position + ".", Toast.LENGTH_SHORT).show();

        }
    });
}

并从适配器中的getView() 方法中删除setOnItemClickListener

Answer 5

将您的getView() 更改为低于 1 并判断它是否有效

public View getView(int position, View convertView, ViewGroup parent) {

            View v=convertView;
            final AppInfo appUnit = dataList.get(position);
            if(v==null)
            {
                LayoutInflater vi=(LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                v=vi.inflate(R.layout.app_row, null);
                v.setClickable(true);
                v.setEnabled(true); 
                v.setFocusable(true);           
            }


            TextView appName=(TextView)v.findViewById(R.id.appName);
            ImageView appIcon=(ImageView)v.findViewById(R.id.AppIcon);

            if(appName!=null)
                appName.setText(appUnit.appName);
            if(appIcon!=null)
                appIcon.setImageDrawable(appUnit.appIcon);
            return v;
        }

Answer 6

在设置它的 onItemClick 之前，您必须将适配器设置为 listview。这里您只是获取 listview 但没有项目。所以当您单击 listview 时，它的 onItemClick 永远不会被调用。