效果如下:
一、java代码
package com.hxzy.popupwindow; import android.app.Activity; import android.graphics.Color; import android.os.Bundle; import android.view.Gravity; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.PopupWindow; import android.widget.TextView; public class MainActivity extends Activity { private Activity activity = this; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Button button = (Button) findViewById(R.id.button); button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { LayoutInflater inflater = activity.getLayoutInflater(); View view = inflater.inflate(R.layout.item, null); TextView textView = (TextView) view.findViewById(R.id.text); textView.setText("发起聊天"); textView.setTextSize(16); textView.setTextColor(Color.WHITE); // 100,95代表宽长 PopupWindow mPopupWindow = new PopupWindow(view, 100, 95); // 点击空白处可关闭弹出消息 mPopupWindow.setBackgroundDrawable(getResources().getDrawable(android.R.drawable.alert_dark_frame)); mPopupWindow.setOutsideTouchable(true); // 此处的center是基于整个手机屏幕的中心 mPopupWindow.showAtLocation(activity.getWindow().getDecorView(), Gravity.CENTER, 0, 0); } }); } }
1、activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.hxzy.popupwindow.MainActivity" > <Button android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:text="button" /> </RelativeLayout>
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <TextView android:id="@+id/text" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <TextView android:id="@+id/text2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="添加朋友" android:textColor="@android:color/white" android:textSize="16sp" /> <TextView android:id="@+id/text3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="扫一扫" android:textColor="@android:color/white" android:textSize="16sp" /> </LinearLayout>