【Android】ContextMenu与SimpleAdapter的应用示例

最近在项目中使用到了ContextMenu还有SimpleAdapter,觉得挺好用的,在此记录一下

示例效果:



示例代码如下:

package com.sg7.contextmenu;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.ContextMenu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class MainActivity extends AppCompatActivity {

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

ListView lv = (ListView) findViewById(R.id.lv);
List<Map<String, Object>> data = getData();
//生成适配器的Item和动态数组对应的元素,第三个参数使用系统提供的布局文件,第四,五个参数表示将数据中的map的key对应的值显示在布局文件的位置
SimpleAdapter adapter = new SimpleAdapter(this, data, android.R.layout.simple_list_item_2, new String[]{"number", "address"}, new int[]{android.R.id.text1, android.R.id.text2});
lv.setAdapter(adapter);
//添加长按点击
lv.setOnCreateContextMenuListener(new View.OnCreateContextMenuListener() {
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
menu.setHeaderTitle("菜单");
menu.add(0, 0, 0, "菜单一");
menu.add(0, 0, 2, "菜单二");
menu.add(0, 0, 0, "菜单三");
menu.add("菜单四");
}
});
}

//长按菜单响应函数
@Override
public boolean onContextItemSelected(MenuItem item) {
Toast.makeText(MainActivity.this, item.getTitle(), Toast.LENGTH_SHORT).show();
return super.onContextItemSelected(item);
}

public List<Map<String, Object>> getData() {
List<Map<String, Object>> data = new ArrayList<>();
for (int i = 0; i < 30; i++) {
HashMap<String, Object> map = new HashMap<>();
map.put("number", "number" + i);
map.put("address", "address" + i);
data.add(map);
}
return data;
}
}


源码地址:http://download.csdn.net/detail/lingwu7/9371403

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