Android之使用Glide加载 https 的图片

1.创建忽略证书的okhttphttpclient

public class UnsafeOkHttpClient {
    public static OkHttpClient getUnsafeOkHttpClient() {
        try {
            // Create a trust manager that does not validate certificate chains
            final TrustManager[] trustAllCerts = new TrustManager[]{
                    new X509TrustManager() {
                        @Override
                        public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
                        }

                        @Override
                        public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
                        }

                        @Override
                        public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                            X509Certificate[] x509Certificates = new X509Certificate[0];
                            return x509Certificates;
                        }
                    }
            };

            // Install the all-trusting trust manager
            final SSLContext sslContext = SSLContext.getInstance("SSL");
            sslContext.init(null, trustAllCerts, new java.security.SecureRandom());

            // Create an ssl socket factory with our all-trusting manager
            final SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();

            OkHttpClient okHttpClient = new OkHttpClient().newBuilder()
                    .sslSocketFactory(sslSocketFactory)
                    .protocols(Arrays.asList(Protocol.HTTP_1_1))
                    .hostnameVerifier(new HostnameVerifier() {
                        @Override
                        public boolean verify(String hostname, SSLSession session) {
                            return true;
                        }
                    }).build();

            return okHttpClient;
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
}

2.调用该.register()方法来交换Glide的一些基本组成部分

public class UnsafeOkHttpGlideModule implements GlideModule {
        @Override
        public void applyOptions(Context context, GlideBuilder builder) {

        }

        @Override
        public void registerComponents(Context context, Glide glide) {
            glide.register(GlideUrl.class, InputStream.class, new OkHttpUrlLoader.Factory());
        }
    }

3.创建一个OkHttpUrlLoader，它使用该URL提供URL和输入流之间的链接UnsafeOkHttpClient。

public class OkHttpUrlLoader implements ModelLoader<GlideUrl, InputStream> {

    /**
     * The default factory for {@link OkHttpUrlLoader}s.
     */
    public static class Factory implements ModelLoaderFactory<GlideUrl, InputStream> {
        private static volatile OkHttpClient internalClient;
        private OkHttpClient client;

        private static OkHttpClient getInternalClient() {
            if (internalClient == null) {
                synchronized (Factory.class) {
                    if (internalClient == null) {
                        internalClient = UnsafeOkHttpClient.getUnsafeOkHttpClient();
                    }
                }
            }
            return internalClient;
        }

        /**
         * Constructor for a new Factory that runs requests using a static singleton client.
         */
        public Factory() {
            this(getInternalClient());
        }

        /**
         * Constructor for a new Factory that runs requests using given client.
         */
        public Factory(OkHttpClient client) {
            this.client = client;
        }

        @Override
        public ModelLoader<GlideUrl, InputStream> build(Context context, GenericLoaderFactory factories) {
            return new OkHttpUrlLoader(client);
        }

        @Override
        public void teardown() {
            // Do nothing, this instance doesn't own the client.
        }
    }

    private final OkHttpClient client;

    public OkHttpUrlLoader(OkHttpClient client) {
        this.client = client;
    }

    @Override
    public DataFetcher<InputStream> getResourceFetcher(GlideUrl model, int width, int height) {
        return new OkHttpStreamFetcher(client, model);
    }
}

4.需要使用我们不安全的OkHttpClient将URL链接到活动的输入流。因此，我们需要另一个类来获取URL的响应输入流：

public class OkHttpStreamFetcher implements DataFetcher<InputStream> {
    private final OkHttpClient client;
    private final GlideUrl url;
    private InputStream stream;
    private ResponseBody responseBody;

    public OkHttpStreamFetcher(OkHttpClient client, GlideUrl url) {
        this.client = client;
        this.url = url;
    }

    @Override
    public InputStream loadData(Priority priority) throws Exception {
        Request.Builder requestBuilder = new Request.Builder()
                .url(url.toStringUrl());

        for (Map.Entry<String, String> headerEntry : url.getHeaders().entrySet()) {
            String key = headerEntry.getKey();
            requestBuilder.addHeader(key, headerEntry.getValue());
        }

        Request request = requestBuilder.build();

        Response response = client.newCall(request).execute();
        responseBody = response.body();
        if (!response.isSuccessful()) {
            throw new IOException("Request failed with code: " + response.code());
        }

        long contentLength = responseBody.contentLength();
        stream = ContentLengthInputStream.obtain(responseBody.byteStream(), contentLength);
        return stream;
    }

    @Override
    public void cleanup() {
        if (stream != null) {
            try {
                stream.close();
            } catch (IOException e) {
                // Ignored
            }
        }
        if (responseBody != null) {
            responseBody.close();
        }
    }

    @Override
    public String getId() {
        return url.getCacheKey();
    }

    @Override
    public void cancel() {
        // TODO: call cancel on the client when this method is called on a background thread. See #257
    }
}

5.配置glide加载https所需要的GlideModule

<meta-data
    android:name="***.UnsafeOkHttpGlideModule"
    android:value="GlideModule"/>