ListView item 中TextView 如何获取长按事件

昨天晚上小伙伴突然来信, ListView item中嵌套的TextView 无法获取长按事件

从前从来没有仔细留意过, coding后发现...果然没什么动静

而且没有合适的API让我调用获取TextView 的 setOnLongClickListener 事件

 

思考ing

ListView几大要素 

xml: item模板 --- 这个不可能绑定事件

java: ListView本身 --- 有可能, 但是本身没有提供API

adapter: 直接使用现成的 SimpleAdapter --- 无法做到, 以前做过重写Adapter的事好像...

             有个 getView 方法是必须重写的, 然后里面貌似可以操作单个控件 .... 恩 有可能,动手试试

 

定义MyAdapter类:

import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

import java.util.List;
import java.util.Map;

/**
 * Created by root on 15-11-6.
 */
public class MyAdapter extends BaseAdapter {
    LayoutInflater mLayoutInflater;
    List<Map<String, Object>> mData;
    public static final String KEY_NAME = "name";

    // Context context, MyAdapter
    public MyAdapter(Context context, List<Map<String, Object>> data) {
        mLayoutInflater = LayoutInflater.from(context);
        mData = data;
    }

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

        if(convertView == null) {
            convertView = mLayoutInflater.inflate(R.layout.listview_item_text, null);
            TextView tv = (TextView) convertView.findViewById(R.id.text1);
            tv.setText(mData.get(position).get(KEY_NAME).toString());
            tv.setOnLongClickListener(new View.OnLongClickListener() {
                @Override
                public boolean onLongClick(View v) {
                    Log.d("carlozlog", "TextView be long click");
                    return true;
                }
            });

        }

        return convertView;
    }

    @Override
    public int getCount() {
        return mData.size();
    }

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

    @Override
    public long getItemId(int position) {
        return 0;
    }
}

 

此处用到一个ListViiew的 item 模板

listview_item_text.xml

<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/text1"
    android:layout_width="fill_parent"
    android:textColor="#000000"
    android:layout_height="50dp" />

 

使用adaper:  MainActivity.java 中

public class MainActivity extends AppCompatActivity {
    // view
    private ListView listView1;
    // data
    Context mContext;
    //SimpleAdapter mSimpleAdapter;
    MyAdapter mMyAdapter;
    String tag = "carlozlog";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mContext = getApplicationContext();

        Map<String, Object> map1 = new HashMap<>();
        map1.put(MyAdapter.KEY_NAME, "Hello World");
        Map<String, Object> map2 = new HashMap<>();
        map2.put(MyAdapter.KEY_NAME, "Lu Xun");
        Map<String, Object> map3 = new HashMap<>();
        map3.put(MyAdapter.KEY_NAME, "Zhu De");
        Map<String, Object> map4 = new HashMap<>();
        map4.put(MyAdapter.KEY_NAME, "Lao Mao");

        List<Map<String, Object>> listData = new ArrayList<>();
        listData.add(map1);
        listData.add(map2);
        listData.add(map3);
        listData.add(map4);

        //mSimpleAdapter = new SimpleAdapter(mContext, listData, R.layout.listview_item_text, new String[]{"name"}, new int[]{R.id.text1});

        mMyAdapter = new MyAdapter(mContext, listData);
        listView1 = (ListView)findViewById(R.id.listview1);
        listView1.setAdapter(mMyAdapter);
        listView1.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
                Log.d(tag, "listview item " + view.getId() + " has been long clicked");
                return false;
            }
        });

    }

}

 

如此就成了, 看log, 搜关键字 carlozlog

11-06 06:56:58.204  12719-12719/? D/carlozlog﹕ TextView be long click
11-06 06:56:59.869  12719-12719/? D/carlozlog﹕ TextView be long click
11-06 06:57:02.115  12719-12719/? D/carlozlog﹕ TextView be long click
11-06 06:57:04.845  12719-12719/? D/carlozlog﹕ TextView be long click
11-06 06:57:06.596  12719-12719/? D/carlozlog﹕ TextView be long click
11-06 06:57:08.755  12719-12719/? D/carlozlog﹕ TextView be long click
11-06 06:57:10.189  12719-12719/? D/carlozlog﹕ TextView be long click