PopupMenu的用法

 PopupMenu是用来在其所指定的view上显示菜单，用法很简单：

1.PopupMenu popupmenu = new PopupMenu(this,target view); 

它要绑定在谁身上，target view 就是谁

2.加载出该菜单

popupMenu.getMenuInflater().inflate(R.menu.main,popupMenu.getMenu());

3.显示该popupmenu

popupmenu.show();

另外popupmenu有点击menuItem的监听方法。

代码如下：

package com.example.popmenuexcercise;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.PopupMenu;
import android.widget.Toast;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final Button button=(Button) findViewById(R.id.button1);
        button.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                //第二个参数是该popupmenu将要依附于哪个view上，如果该view下面有空间它就在下面显示，否则在其上面
                PopupMenu popupMenu=new PopupMenu(getApplicationContext(), button);
                popupMenu.getMenuInflater().inflate(R.menu.main,popupMenu.getMenu());
                popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {

                    @Override
                    public boolean onMenuItemClick(MenuItem item) {
                        // TODO Auto-generated method stub
                        Toast.makeText(getApplicationContext(), item.getTitle(),1000).show();
                        return false;
                    }
                });
                //最后不要忘了调用show方法
                popupMenu.show();
            }
        });
    }



}