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最近工作需求需要用到PopupWindow ,MainActivity.java代码如下:
package com.example.administrator.popuwindow;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.PopupWindow;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity{
private TextView textView;
private PopupWindow popupWindow;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView = (TextView)findViewById(R.id.tv);
textView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
popupWindow = new PopupWindow(LayoutInflater.from(MainActivity.this).inflate(R.layout.pop_list, null), ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT, true);
popupWindow.showAtLocation(textView, Gravity.CENTER,0,0);
}
});
}
}
pop_list.xml 如下:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="160dp"
android:layout_height="160dp"
android:orientation="vertical"
android:background="#ffffff"
android:gravity="center"
tools:context="com.example.administrator.popuwindow.MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="16dp"
android:text="回复"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="16dp"
android:text="删除"/>
</LinearLayout>
效果如图:
可是有个问题,只有按返回键才popuwindown才会消失,点击屏幕没有反应,在网上搜出的答案说是在
showAtLocation调用之前,加上以下两句,
popupWindow.setOutsideTouchable(true);
popupWindow.setBackgroundDrawable(new BitmapDrawable());
发现然并卵,百思不得其解,经过反复思考,发现这一段代码写得有问题:
popupWindow = new PopupWindow(LayoutInflater.from(MainActivity.this).inflate(R.layout.pop_list, null), ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT, true);
改成如下:
popupWindow = new PopupWindow(LayoutInflater.from(MainActivity.this).inflate(R.layout.pop_list, null), ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT, true);
原因很简单,因为前者这样写得话,popupWindow 把整个window都遮挡了,所以popupWindow.setOutsideTouchable(true)并没有起到作用,所以失效
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原文地址:http://www.cnblogs.com/sharkli/p/5518883.html