上下文菜单

package com.example.huanglifeng.menudemo;

import android.app.Activity;
import android.app.AlertDialog;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.TextView;

public class MainActivity extends Activity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
TextView tv=new TextView(this);
tv.setText("上下文菜单的载体");
registerForContextMenu(tv);
setContentView(tv);
}

public void onCreateContextMenu(ContextMenu menu,View v,ContextMenu.ContextMenuInfo info)
{
super.onCreateContextMenu(menu,v,info);
menu.add(0,1,0,"save")
.setIcon(R.drawable.smile);
menu.add(0,2,0,"delete")
.setIcon(R.drawable.wait);
}
public boolean onContextItemSelected(MenuItem item)
{
super.onContextItemSelected(item);
switch (item.getItemId())
{
case 1:
new AlertDialog.Builder(this).setMessage("你点击了save按钮").show();
break;
case 2:
new AlertDialog.Builder(this).setMessage("你点击了delete按钮").show();
break;
default:
break;
}
return true;
}

}