Question

Picasso如果图片来自https网址，请加载图片：public class WeatherController { public static void main(String[] args) { WeatherController mainController = new WeatherController(); mainController.doStuff(); } public void doStuff() { WeatherObservation newObservation = new WeatherObservation("Whyalla", "28-02-17", 38, 0, 1.3, 1); WeatherObservation.printObservation(newObservation); WeatherHistory newHistory = new WeatherHistory(); //Create new History Array newHistory.arrayAdd(newObservation); //Add the Observation to it. // These are the problem methods: WeatherHistory.arrayPrint(newHistory); WeatherObservation.setTemp(10); } } // End Class

由于youtube通过https指示所有流量，因此适用于： https://i.ytimg.com/vi/28uUsJ72a1A/hqdefault.jpg

但是当我使用我的网址时 http://i.ytimg.com/vi/28uUsJ72a1A/hqdefault.jpg

它会重新启动指向该站点的https版本的链接，只是出错

这就是我加载图片的方式 http://www.example.com/images/djnsdfndsf.jpg

Picasso.with(this).load(current.getImageURL()).into(ImageView);

但是上面的代码给出了无法解析的OkHttpDownloader

现在我正在使用So I tried using this: //Below code for Picasso initializing once for the app private Picasso picasso; private OkHttpClient okHttpClient; okHttpClient = new OkHttpClient(); picasso = new Picasso.Builder(this) .downloader(new OkHttpDownloader(okHttpClient)) .build(); //Below code to retrieve the images whereever required on the app picasso.with(this).load(current.getImageURL()).into(imageView)

修改如何强制Picasso通过http而非https下载？

Answer 1

在您的网址中将http替换为https。请尝试使用此代码。

String aUrl = aImageInfo.getImage_url().replace("http", "https");

    Picasso
            .with(myContext)
            .load(aUrl)
            .placeholder(R.mipmap.place_holder)
            .error(R.mipmap.error)
            .fit()
            .into(aHolder.aImageView);

Answer 2

默认Picasso正在使用UrlConnectionDownloader。从名称中您可以理解，它正在使用HttpURLConnection，它不会自动从HTTP重定向到HTTPS（反之亦然）。重定向后可能会产生严重的安全后果。

解决这个问题的方法是使用OkHttp3Downloader - 毕加索2的OkHttp 3下载器实现。

OkHttpClient client = new OkHttpClient(); 
Picasso picasso = new Picasso.Builder(context)
.downloader(new OkHttp3Downloader(client))
.build()

要使用OkHttp3Downloader，您必须添加依赖

compile 'com.jakewharton.picasso:picasso2-okhttp3-downloader:1.1.0'

Answer 3

API级别28+中不允许HTTP请求。要专门允许对您的域的HTTP请求，必须将以下文件添加到您的代码中。

<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
    <domain-config cleartextTrafficPermitted="true">
    <domain includeSubdomains="true">riafy.me</domain>       
</domain-config>
</network-security-config>

使用 riafy.me 添加您的域名，并将该文件作为 network_security_config.xml 添加到资源中xml文件夹中。

android:networkSecurityConfig="@xml/network_security_config"

将此添加到清单文件中的应用程序标签。

Answer 4

如果你想从毕加索得到一个回调，那么试试以下内容并onBitmapLoaded()将位图设置为ImageView

Picasso.with(getContext()).load(url).into(new Target() {
    @Override public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
        // cache is now warmed up
    }
    @Override public void onBitmapFailed(Drawable errorDrawable) { }
    @Override public void onPrepareLoad(Drawable placeHolderDrawable) { }
});

Answer 5

您可以将其添加到您的应用程序类：

    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);

Answer 6

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);

Answer 7

您的网址包含Https然后您需要在网址中使用https，否则它将无法加载您也无法使用普通的http下载图像。如果你想尝试，那么只需使用BitmapFactory下载http图像。

感谢。

毕加索没有从http网址加载图片，但加载来自https网址的图片？

7 个答案: