关于Imageloader加载吉林快_三源码下载安全链接

相信大家在[吉林快_三源码下载](http://haozbbs.com)开发app过程中，肯定会接触到第三方加载图片工具（比如Glide，ImageLoader，vollery，xutils等等）

Glide这里不做讲解，自己也没怎么用过，详情可以了解郭霖的博客 https://blog.csdn.net/guolin_blog/。
vollery框架，博主也没使用过，xutils光听说过，也没用过。
现在只能讲解Imageloader的加载呢。

       ImageLoader简介

             ImageLoader是一个加载图片的开源框架，其基本功能为加载本地和网络图片。

             github地址：https://github.com/nostra13/Android-Universal-Image-Loader

             详细了解可以从此链接进入：https://blog.csdn.net/wl1769127285/article/details/52786717

      ImageLoader 使用

         在后来的版本中省去了初始化的过程，可以直接使用

         下边介绍其主流的几个方法：

         displayImage

        /**
         * Adds display image task to execution pool. Image will be set to ImageView when it's turn.<br />
         * <b>NOTE:</b> {@link #init(ImageLoaderConfiguration)} method must be called before this method call
         *
         * @param uri       Image URI (i.e. "http://site.com/image.png", "file:///mnt/sdcard/image.png")
         * @param imageView {@link ImageView} which should display image
         * @param options   {@linkplain DisplayImageOptions Display image options} for image displaying. If <b>null</b> -
         *                  default display image options
         *                  {@linkplain ImageLoaderConfiguration.Builder#defaultDisplayImageOptions(DisplayImageOptions) from
         *                  configuration} will be used.
         * @throws IllegalStateException    if {@link #init(ImageLoaderConfiguration)} method wasn't called before
         * @throws IllegalArgumentException if passed <b>imageView</b> is null
         */
        public void displayImage(String uri, ImageView imageView, DisplayImageOptions options) {
            displayImage(uri, imageView, options, null);
        }

loadImage

    /**
     * Adds load image task to execution pool. Image will be returned with
     * {@link ImageLoadingListener#onLoadingComplete(String, android.view.View, android.graphics.Bitmap)} callback}.<br />
     * <b>NOTE:</b> {@link #init(ImageLoaderConfiguration)} method must be called before this method call
     *
     * @param uri          Image URI (i.e. "http://site.com/image.png", "file:///mnt/sdcard/image.png")
     * @param minImageSize Minimal size for {@link Bitmap} which will be returned in
     *                     {@linkplain ImageLoadingListener#onLoadingComplete(String, android.view.View, android.graphics.Bitmap)} callback}. Downloaded image will be decoded
     *                     and scaled to {@link Bitmap} of the size which is <b>equal or larger</b> (usually a bit larger) than
     *                     incoming minImageSize .
     * @param listener     {@linkplain ImageLoadingListener Listener} for image loading process. Listener fires events on UI
     *                     thread.
     * @throws IllegalStateException if {@link #init(ImageLoaderConfiguration)} method wasn't called before
     */
    public void loadImage(String uri, ImageSize minImageSize, ImageLoadingListener listener) {
        loadImage(uri, minImageSize, null, listener);
    }

 上边ImageLoader的方法简单介绍了一下，回归正题：imageload加载https图片

       如上图所示：初始化的时候，只需要引入一个加载项 .imageDownloader()

加载项里边的实例如下：

package com.nuctech.handheldlock.https;

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;

import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocketFactory;

import android.content.Context;

import com.nostra13.universalimageloader.core.download.BaseImageDownloader;

public class AuthImageDownloader extends BaseImageDownloader {

    private SSLSocketFactory mSSLSocketFactory;

    public AuthImageDownloader(Context context) {
        super(context);
        SSLContext sslContext = sslContextForTrustedCertificates();
        mSSLSocketFactory = sslContext.getSocketFactory();
    }

    public AuthImageDownloader(Context context, int connectTimeout,
            int readTimeout) {
        super(context, connectTimeout, readTimeout);
        SSLContext sslContext = sslContextForTrustedCertificates();
        mSSLSocketFactory = sslContext.getSocketFactory();
    }

    @Override
    protected InputStream getStreamFromNetwork(String imageUri, Object extra)
            throws IOException {
        URL url = null;
        try {
            url = new URL(imageUri);
        } catch (MalformedURLException e) {
        }
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setConnectTimeout(connectTimeout);
        conn.setReadTimeout(readTimeout);

        if (conn instanceof HttpsURLConnection) {
            ((HttpsURLConnection) conn).setSSLSocketFactory(mSSLSocketFactory);
            ((HttpsURLConnection) conn).setHostnameVerifier((DO_NOT_VERIFY));
        }
        return new BufferedInputStream(conn.getInputStream(), BUFFER_SIZE);
    }

    // always verify the host - dont check for certificate
    final HostnameVerifier DO_NOT_VERIFY = new HostnameVerifier() {
        @Override
        public boolean verify(String hostname, SSLSession session) {
            return true;
        }
    };

    public SSLContext sslContextForTrustedCertificates() {
        javax.net.ssl.TrustManager[] trustAllCerts = new javax.net.ssl.TrustManager[1];
        javax.net.ssl.TrustManager tm = new miTM();
        trustAllCerts[0] = tm;
        SSLContext sc = null;
        try {
            sc = SSLContext.getInstance("SSL");
            sc.init(null, trustAllCerts, null);
            // javax.net.ssl.HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (KeyManagementException e) {
            e.printStackTrace();
        } finally {
            return sc;
        }
    }

    class miTM implements javax.net.ssl.TrustManager,
            javax.net.ssl.X509TrustManager {
        public java.security.cert.X509Certificate[] getAcceptedIssuers() {
            return null;
        }

        public boolean isServerTrusted(
                java.security.cert.X509Certificate[] certs) {
            return true;
        }

        public boolean isClientTrusted(
                java.security.cert.X509Certificate[] certs) {
            return true;
        }

        public void checkServerTrusted(
                java.security.cert.X509Certificate[] certs, String authType)
                throws java.security.cert.CertificateException {
            return;
        }

        public void checkClientTrusted(
                java.security.cert.X509Certificate[] certs, String authType)
                throws java.security.cert.CertificateException {
            return;
        }
    }
}

这样初始化之后就可以直接调用了