基于Android实现点击某个按钮让菜单选项从按钮周围指定位置弹出

Android Material Design：PopupMenu

Android Material Design 引入的PopupMenu类似过去的上下文菜单，但是更灵活。 如图所示：

现在给出实现上图PopupMenu的代码。 本例是一个普通的Button触发弹出PopupMenu。

测试的MainActivity.java ：

package zhangphil.materialdesign;
import android.app.Activity;
import android.os.Bundle;
import android.support.v.widget.PopupMenu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
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.button);
    button.setOnClickListener(new View.OnClickListener() {
     @Override
      public void onClick(View v) {
        showPopupMenu(button);
      }
    });
  }
  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();
   }
}
 package zhangphil.materialdesign;
import android.app.Activity;
import android.os.Bundle;
import android.support.v7.widget.PopupMenu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
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.button);
 button.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View v) {
  showPopupMenu(button);
  }
 });
 }
 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();
 }
}

MainActivity.java需要的activity_main布局文件只含一个普通的Android Button，在次不再赘述。

位于menu目录下的main.xml：

<menu xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:app="http://schemas.android.com/apk/res-auto"
   xmlns:tools="http://schemas.android.com/tools" >
   <item
     android:id="@+id/action_open"
     android:orderInCategory="
     android:title="打开"
     app:showAsAction="never"/>
  <item
    android:id="@+id/action_new"
    android:orderInCategory="
    android:title="新建"
    app:showAsAction="never"/>
  <item
    android:id="@+id/action_del"
    android:orderInCategory="
    android:title="删除"
     app:showAsAction="never"/>
 </menu> 

以上内容给大家分享基于Android实现点击某个按钮让菜单选项从按钮周围指定位置弹出的相关知识，希望大家喜欢。