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Android ContextMenu上下文菜单

Android ContextMenu上下文菜单

作者: 百里漫步 | 来源:发表于2017-10-23 20:13 被阅读0次

    Windows鼠标右键菜单,Android选项长按弹出菜单
    添加方式:静态xml/动态添加
    menu/main.xml

    <menu xmlns:android="http://schemas.android.com/apk/res/android" >
    
        <item
            android:id="@+id/context_menu_item1"
            android:orderInCategory="100"
            android:showAsAction="never"
            android:title="复制"/>
      <item
            android:id="@+id/context_menu_item2"
            android:orderInCategory="100"
            android:showAsAction="never"
            android:title="粘贴"/>
        
        <item
            android:id="@+id/context_menu_item3"
            android:orderInCategory="100"
            android:showAsAction="never"
            android:title="剪切"/>
        <item
            android:id="@+id/context_menu_item4"
            android:orderInCategory="100"
            android:showAsAction="never"
            android:title="重命名"/>
        
    </menu>
    
    

    MainActivity.java

    import java.util.ArrayList;
    import java.util.zip.Inflater;
    
    import android.app.Activity;
    import android.os.Bundle;
    import android.view.ContextMenu;
    import android.view.MenuInflater;
    import android.view.MenuItem;
    import android.view.View;
    import android.view.ContextMenu.ContextMenuInfo;
    import android.widget.ArrayAdapter;
    import android.widget.ListView;
    import android.widget.Toast;
    
    public class MainActivity extends Activity {
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            showListView();
        }
    
        /**
         * 设置listview的显示内容
         */
        private void showListView() {
            ListView listview = (ListView) findViewById(R.id.listview);
            ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
                    android.R.layout.simple_list_item_1, getData());
            listview.setAdapter(adapter);
            this.registerForContextMenu(listview);
        }
        @Override
        public void onCreateContextMenu(ContextMenu menu, View v,
                ContextMenuInfo menuInfo) {
            // TODO Auto-generated method stub
            super.onCreateContextMenu(menu, v, menuInfo);
            //设置Menu显示内容
            menu.setHeaderTitle("文件操作");
            menu.setHeaderIcon(R.drawable.ic_launcher);
    //      menu.add(1, 1, 1, "复制");
    //      menu.add(1, 2, 1, "粘贴");
    //      menu.add(1, 3, 1, "剪切");
    //      menu.add(1, 4, 1, "重命名");
            MenuInflater inflater = getMenuInflater();
            inflater.inflate(R.menu.main, menu);
        }
        
        @Override
        public boolean onContextItemSelected(MenuItem item) {
            // TODO Auto-generated method stub
            switch (item.getItemId()) {
            case R.id.context_menu_item1:
                Toast.makeText(MainActivity.this, "点击复制",Toast.LENGTH_SHORT).show();
                break;
    
            case R.id.context_menu_item2:
                Toast.makeText(MainActivity.this, "点击粘贴",Toast.LENGTH_SHORT).show();
                break;
    
            case R.id.context_menu_item3:
                Toast.makeText(MainActivity.this, "点击剪切",Toast.LENGTH_SHORT).show();
                break;
    
            case R.id.context_menu_item4:
                Toast.makeText(MainActivity.this, "点击重命名",Toast.LENGTH_SHORT).show();
                break;
            }
            
            return super.onContextItemSelected(item);
        
        }
        
        /**
         * 构造listview显示的数据
         * 
         * @return
         */
        private ArrayList<String> getData() {
            ArrayList<String> list = new ArrayList<String>();
            for (int i = 0; i < 5; i++) {
                list.add("文件" + (i + 1));
            }
            return list;
        }
    }
    
    
    

    演示效果:


    context.gif

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