您好我正在使用Picasso库从URL下载图片。
网址是使用https协议，在这里我无法使用Picasso下载https协议的图像。
它不支持下载使用https协议的图像，只有在我使用http proctocol的情况下它才适用于我吗？
这里我试图获取使用https协议的位图
com.squareup.picasso.Target target = new com.squareup.picasso.Target() {
@Override
public void onBitmapLoaded(Bitmap bitmap, LoadedFrom loadedFrom) {
userProfile.setBitmap(bitmap);
// call the Web API to register the walker here
new AudioStreetAsyncTask(getActivity(), userProfile, getString(R.string.registration_processing_message), new TaskCompleteListener() {
@Override
public void onTaskCompleted(String jsonResponse) {
Log.d(TAG, jsonResponse);
}
});
}
@Override
public void onBitmapFailed(Drawable drawable) {
userProfile.setBitmap(null);
// call the Web API to register the walker here
new AudioStreetAsyncTask(getActivity(), userProfile, getString(R.string.registration_processing_message), new TaskCompleteListener() {
@Override
public void onTaskCompleted(String jsonResponse) {
Log.d(TAG, jsonResponse);
}
}).execute();
}
@Override
public void onPrepareLoad(Drawable drawable) {}
};
Picasso.with(getActivity()).load(imgUrl.toString()).into(target);
有什么想法吗？
答案 0 :(得分：34)
在Gradle：
compile 'com.squareup.okhttp:okhttp:2.2.0'
compile 'com.squareup.okhttp:okhttp-urlconnection:2.2.0'
compile 'com.squareup.picasso:picasso:2.4.0'
这个类而不是原来的Picasso类
毕加索班：
public class PicassoTrustAll {
private static Picasso mInstance = null;
private PicassoTrustAll(Context context) {
OkHttpClient client = new OkHttpClient();
client.setHostnameVerifier(new HostnameVerifier() {
@Override
public boolean verify(String s, SSLSession sslSession) {
return true;
}
});
TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() {
@Override
public void checkClientTrusted(
java.security.cert.X509Certificate[] x509Certificates,
String s) throws java.security.cert.CertificateException {
}
@Override
public void checkServerTrusted(
java.security.cert.X509Certificate[] x509Certificates,
String s) throws java.security.cert.CertificateException {
}
@Override
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return new java.security.cert.X509Certificate[] {};
}
} };
try {
SSLContext sc = SSLContext.getInstance("TLS");
sc.init(null, trustAllCerts, new java.security.SecureRandom());
client.setSslSocketFactory(sc.getSocketFactory());
} catch (Exception e) {
e.printStackTrace();
}
mInstance = new Picasso.Builder(context)
.downloader(new OkHttpDownloader(client))
.listener(new Picasso.Listener() {
@Override
public void onImageLoadFailed(Picasso picasso, Uri uri, Exception exception) {
Log.e("PICASSO", exception);
}
}).build();
}
public static Picasso getInstance(Context context) {
if (mInstance == null) {
new PicassoTrustAll(context);
}
return mInstance;
}
}
用法示例：
PicassoTrustAll.getInstance(context)
.load(url)
.into(imageView);
答案 1 :(得分：3)
@ nexus700120解决方案不是最新的
@Neha Tyagi解决方案有效但在每个活动实例中创建多个Picasso实例，这会泄漏内存
所以我精心设计了一个用于重定向图像网址的最新单例解决方案 -
CustomPicasso.java
import android.content.Context;
import android.util.Log;
import com.jakewharton.picasso.OkHttp3Downloader;
import com.squareup.picasso.Picasso;
/**
* Created by Hrishikesh Kadam on 19/12/2017
*/
public class CustomPicasso {
private static String LOG_TAG = CustomPicasso.class.getSimpleName();
private static boolean hasCustomPicassoSingletonInstanceSet;
public static Picasso with(Context context) {
if (hasCustomPicassoSingletonInstanceSet)
return Picasso.with(context);
try {
Picasso.setSingletonInstance(null);
} catch (IllegalStateException e) {
Log.w(LOG_TAG, "-> Default singleton instance already present" +
" so CustomPicasso singleton cannot be set. Use CustomPicasso.getNewInstance() now.");
return Picasso.with(context);
}
Picasso picasso = new Picasso.Builder(context).
downloader(new OkHttp3Downloader(context))
.build();
Picasso.setSingletonInstance(picasso);
Log.w(LOG_TAG, "-> CustomPicasso singleton set to Picasso singleton." +
" In case if you need Picasso singleton in future then use Picasso.Builder()");
hasCustomPicassoSingletonInstanceSet = true;
return picasso;
}
public static Picasso getNewInstance(Context context) {
Log.w(LOG_TAG, "-> Do not forget to call customPicasso.shutdown()" +
" to avoid memory leak");
return new Picasso.Builder(context).
downloader(new OkHttp3Downloader(context))
.build();
}
}
build.gradle（Module：app）
android {
...
}
dependencies {
...
compile 'com.squareup.picasso:picasso:2.5.2'
compile 'com.jakewharton.picasso:picasso2-okhttp3-downloader:1.1.0'
}
用法 -
CustomPicasso.with(context)
.load("http://i.imgur.com/DvpvklR.png")
.into(imageView);
有关最新版本，请查看CustomPicasso要点 - https://gist.github.com/hrishikesh-kadam/09cef31c736de088313f1a102f5ed3a3
答案 2 :(得分：2)
final OkHttpClient client = new OkHttpClient.Builder()
.protocols(Collections.singletonList(Protocol.HTTP_1_1))
.build();
Picasso picasso = new Picasso.Builder(mContext)
.downloader(new OkHttp3Downloader(client))
.build();
picasso .with(mContext).load(YOUR_URL).into(YOUR_IMAGEVIEW);
添加
compile 'com.jakewharton.picasso:picasso2-okhttp3-downloader:1.1.0'
答案 3 :(得分：1)
只需将此代码放入您的Application类：
final OkHttpClient client = new OkHttpClient.Builder()
.protocols(Collections.singletonList(Protocol.HTTP_1_1))
.build();
final Picasso picasso = new Picasso.Builder(this)
.downloader(new OkHttp3Downloader(client))
.build();
Picasso.setSingletonInstance(picasso);
从此link进行检查。
答案 4 :(得分：0)
以下对于这些依赖项工作正常：
implementation 'com.squareup.okhttp3:okhttp:3.0.1'
implementation 'com.squareup.picasso:picasso:2.71828'
首先定义一个接受证书的客户端：
public class SelfSignCertHttpClient {
public static OkHttpClient getSelfSignOkHttpClient(List<Interceptor> interceptors) {
try {
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() {
return new java.security.cert.X509Certificate[]{};
}
}
};
final SSLContext sslContext = SSLContext.getInstance("SSL");
sslContext.init(null, trustAllCerts, new java.security.SecureRandom());
final SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();
OkHttpClient.Builder builder = new OkHttpClient.Builder();
builder.sslSocketFactory(sslSocketFactory, (X509TrustManager)trustAllCerts[0]);
builder.hostnameVerifier(new HostnameVerifier() {
@Override
public boolean verify(String hostname, SSLSession session) {
return true;
}
});
for (Interceptor interceptor : interceptors) {
builder.addInterceptor(interceptor);
}
OkHttpClient okHttpClient = builder.build();
return okHttpClient;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
来源：https://futurestud.io/tutorials/retrofit-2-how-to-trust-unsafe-ssl-certificates-self-signed-expired
我还添加了在创建客户端时传递拦截器列表的选项。
您可以定义一个PicasoTrustAll类：
public class PicassoTrustAll {
private static Picasso mInstance = null;
private PicassoTrustAll(Context context) {
List<Interceptor> interceptors = new ArrayList<>();
// Add any interceptors you wish (e.g Authorization Header interceptor)
mInstance = new Picasso.Builder(context)
.downloader(new OkHttp3Downloader(SelfSignCertHttpClient.getSelfSignOkHttpClient(interceptors)))
.listener((picasso, uri, exception) -> Log.e("PICASSO", exception.getMessage())).build();
}
public static Picasso getInstance(Context context) {
if (mInstance == null) {
new PicassoTrustAll(context);
}
return mInstance;
}
}
样品用量：
PicassoTrustAll.getInstance(this).load("https://10.0.2.2/path/to/picture").into(mainPictureView);