ImageLoader网络加载图片——可以本地缓存

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MainActivity.java

package com.example.wangaishi20170816;

import android.graphics.Bitmap;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
import android.widget.ListView;

import com.nostra13.universalimageloader.cache.disc.naming.Md5FileNameGenerator;
import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
import com.nostra13.universalimageloader.core.assist.FailReason;
import com.nostra13.universalimageloader.

        core.display.RoundedBitmapDisplayer;
import com.nostra13.universalimageloader.core.listener.ImageLoadingListener;

public class MainActivity extends AppCompatActivity {

    private String url="https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1502854660864&di=61792eb7e3ac7f3f6dc74c3638d1a1f4&imgtype=0&src=http%3A%2F%2Fmoviepic.manmankan.com%2Fyybpic%2Fyanyuan%2Fpic%2F12588%2F281107_s.jpg";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //获取控件
        ImageView tv_image = (ImageView) findViewById(R.id.tv_image);

DisplayImageOptions options=new DisplayImageOptions.Builder()

.cacheInMemory(true)

.cacheOnDisk(true)

.considerExifParams(true)

.build();

ImageLoaderConfiguration config=new ImageLoaderConfiguration.Builder(MainActivity.this)

.defaultDisplayImageOptions(options).build();

        ImageLoader.getInstance().init(config);
        ImageLoader.getInstance().displayImage(url,tv_image);

    }

}

布局

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.wangaishi20170816.MainActivity">

     <ImageView
         android:id="@+id/tv_image"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         />

</android.support.constraint.ConstraintLayout>

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