ContextMenu长按事件 Android组件ContextMenu实现长按事件

/**
 *ContextMenu菜单就是长按某一个组件，就会在屏幕的中间弹出ContextMenu，这里设置为长按文本框弹出   *ContextMenu菜单
 */

public class MyContextMenu extends AppCompatActivity {
    /** 
     *Called when the activity is first created. 
     **/
    final static int CONTEXT_MENU_1 = Menu.FIRST;//可以理解为ID设置的最小数值
    final static int CONTEXT_MENU_2 = Menu.FIRST + 1;
    final static int CONTEXT_MENU_3 = Menu.FIRST + 2;
    TextView textView = null;//设置成员变量
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_my_context_menu);
        textView = (TextView)findViewById(R.id.label);//获取text
        registerForContextMenu(textView);//注册长摁菜单事件
    }

    /**
     *创建菜单
     **/
    @Override
    public void onCreateContextMenu(ContextMenu menu,
                                    View v, ContextMenu.ContextMenuInfo menuInfo){
        menu.setHeaderTitle("快捷菜单标题");//设置标题
        //设置对应id及title
        menu.add(0, CONTEXT_MENU_1, 0,"菜单子项1");
        menu.add(0, CONTEXT_MENU_2, 1,"菜单子项2");
        menu.add(0, CONTEXT_MENU_3, 2,"菜单子项3");
    }

    /**
     *设置对应事件
     **/
    @Override
    public boolean onContextItemSelected(MenuItem item){
        switch(item.getItemId()){
            case CONTEXT_MENU_1:
                Toast.makeText(MyContextMenu.this,"选中菜单子项1",Toast.LENGTH_SHORT).show();
                return true;
            case CONTEXT_MENU_2:
                Toast.makeText(MyContextMenu.this,"选中菜单子项2",Toast.LENGTH_SHORT).show();
                return true;
            case CONTEXT_MENU_3:
                Toast.makeText(MyContextMenu.this,"选中菜单子项3",Toast.LENGTH_SHORT).show();
                return true;
        }
        return false;
    }

    public void skip(View v){
        Intent intent = new Intent();
        intent.setClass(MyContextMenu.this,TabDemo.class);//从前者跳往后者
        startActivity(intent);//启动
    }
}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    tools:context=".MyContextMenu"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <TextView android:id="@+id/label"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/hello"
        />

</LinearLayout>