android 指定坐标弹出,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...-优快云博客

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：

xmlns:app="http://schemas.android.com/apk/res-auto"

xmlns:tools="http://schemas.android.com/tools" >

android:id="@+id/action_open"

android:orderInCategory="

android:title="打开"

app:showAsAction="never"/>

android:id="@+id/action_new"

android:orderInCategory="

android:title="新建"

app:showAsAction="never"/>

android:id="@+id/action_del"

android:orderInCategory="

android:title="删除"

app:showAsAction="never"/>

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。