OkHTTP和毕加索不一起运行

Question

我在我的项目中使用毕加索库来加载图像并缓存它们。它工作得很好，没有任何问题。但是，当我试图使用OkHttp库执行与服务器的数据通信（JSON通信）时，Picasso抛出了异常。

我使用以下JAR:OKHTTP-2.0.0-RC2、OKIO-1.0.0、Picasso-2.2.0。当我在添加这些JAR后运行我的项目时，它会崩溃，出现以下情况：

06-12 11:13:15.824: E/dalvikvm(12105): Could not find class 'com.squareup.okhttp.HttpResponseCache', referenced from method com.squareup.picasso.OkHttpDownloader.<init>

我添加okhttp只是为了使用以下方法：

public static String executeHttpGet(String urlStr) {
    Response response = null;
    String result = "";
    OkHttpClient client = new OkHttpClient();

    try {
        Request request = new Request.Builder().url(urlStr).build();

        response = client.newCall(request).execute();
        result = response.body().string();
    } catch (Exception ex) {

    }
    return result;
}

06-12 11:19:49.307: E/AndroidRuntime(13036): FATAL EXCEPTION: main
06-12 11:19:49.307: E/AndroidRuntime(13036): java.lang.NoClassDefFoundError: com.squareup.okhttp.HttpResponseCache
06-12 11:19:49.307: E/AndroidRuntime(13036):    at com.squareup.picasso.OkHttpDownloader.<init>(OkHttpDownloader.java:74)
06-12 11:19:49.307: E/AndroidRuntime(13036):    at com.squareup.picasso.OkHttpDownloader.<init>(OkHttpDownloader.java:51)
06-12 11:19:49.307: E/AndroidRuntime(13036):    at com.squareup.picasso.OkHttpDownloader.<init>(OkHttpDownloader.java:41)
06-12 11:19:49.307: E/AndroidRuntime(13036):    at com.squareup.picasso.Utils$OkHttpLoaderCreator.create(Utils.java:319)
06-12 11:19:49.307: E/AndroidRuntime(13036):    at com.squareup.picasso.Utils.createDefaultDownloader(Utils.java:171)
06-12 11:19:49.307: E/AndroidRuntime(13036):    at com.squareup.picasso.Picasso$Builder.build(Picasso.java:490)
06-12 11:19:49.307: E/AndroidRuntime(13036):    at com.squareup.picasso.Picasso.with(Picasso.java:390)

为什么会这样？我如何一起使用两个库？

Answer 1

这个组合对我有效：

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'