Android通过PopupMenu定义弹出菜单的位置

效果如图：



具体实现代码如下：

package com.example.mytest;

import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
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);

Button btn = (Button) findViewById(R.id.btn);

btn.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {

showPopupMenu(v);
}
});
}

private void showPopupMenu(View view) {
// View当前PopupMenu显示的相对View的位置
PopupMenu popupMenu = new PopupMenu(this, view);

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

// menu的item点击事件
popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
Toast.makeText(getApplicationContext(), item.getTitle(), Toast.LENGTH_SHORT).show();
return false;
}
});

// PopupMenu关闭事件
popupMenu.setOnDismissListener(new PopupMenu.OnDismissListener() {
@Override
public void onDismiss(PopupMenu menu) {
Toast.makeText(getApplicationContext(), "关闭PopupMenu", Toast.LENGTH_SHORT).show();
}
});

popupMenu.show();
}

}