图片框架异步请求网络图片

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1.加入jar包universal-image-loader-1.9.5.jar

2.在xml文件中

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.imgview">!!!!<uses-permission android:name="android.permission.INTERNET"/>    <application      !!!  android:name=".App"        android:allowBackup="true"        android:icon="@mipmap/ic_launcher"        android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round"        android:supportsRtl="true" android:theme="@style/AppTheme">        <activity android:name=".MainActivity">            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application></manifest>

在Activity中写

package com.example.imgview;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.widget.ImageView;import com.nostra13.universalimageloader.core.ImageLoader;public class MainActivity extends AppCompatActivity {    String[] images = {            "http://img.my.csdn.net/uploads/201407/26/1406383264_8243.jpg",            "http://img.my.csdn.net/uploads/201407/26/1406383248_3693.jpg",            "http://img.my.csdn.net/uploads/201407/26/1406383243_5120.jpg",            "http://img.my.csdn.net/uploads/201407/26/1406383242_3127.jpg",            "http://img.my.csdn.net/uploads/201407/26/1406383242_9576.jpg",            "http://img.my.csdn.net/uploads/201407/26/1406383242_1721.jpg",            "http://img.my.csdn.net/uploads/201407/26/1406383219_5806.jpg",            "http://img.my.csdn.net/uploads/201407/26/1406383214_7794.jpg",            "http://img.my.csdn.net/uploads/201407/26/1406383213_4418.jpg",            "http://img.my.csdn.net/uploads/201407/26/1406383213_3557.jpg",            "http://img.my.csdn.net/uploads/201407/26/1406383210_8779.jpg",            "http://img.my.csdn.net/uploads/201407/26/1406383172_4577.jpg",            "http://img.my.csdn.net/uploads/201407/26/1406383166_3407.jpg",            "http://img.my.csdn.net/uploads/201407/26/1406383166_2224.jpg"    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        ImageView ImageView = (ImageView) findViewById(R.id.imageView);        ImageLoader imageLoader = ImageLoader.getInstance();        imageLoader.displayImage(images[3], ImageView);    }}

//最后要在layout中键一个xml文件里面写入图片控件

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