android - OkHttpClient 的 NoClassDefFoundError

Question

在 gradle 中添加 facebook 依赖项后，我收到此运行时错误:

     compile 'com.facebook.android:facebook-android-sdk:4.6.0'

请注意，我也在使用 okhttp:

    compile 'com.squareup.okhttp:okhttp:2.5.0'

错误日志是:

 E/AndroidRuntime: FATAL EXCEPTION: Thread-109754
     Process: com.venkat.project, PID: 4453
            java.lang.NoClassDefFoundError: com.squareup.okhttp.internal.Util
            at com.squareup.okhttp.OkHttpClient.<clinit>(OkHttpClient.java:57)
            at com.venkat.project.http.MyHTTPThread.run(MyHTTPThread.java:127)
            at com.venkat.project.http.MyHTTPThread.run(MyHTTPThread.java:61)
            at java.lang.Thread.run(Thread.java:841)
02-23 18:11:02.729 4453-4573/com.venkat.project I/dalvikvm: Rejecting re-init on previously-failed class Lcom/squareup/okhttp/OkHttpClient; v=0x0

注意:我在 Samsung mobile 4.4 上遇到此错误，但在模拟器和 moto g 5.0 上它有效。

Answer 1

最新版本的Piccasso使用了旧版本的Okhttp，需要使用新的依赖

compile 'com.squareup.okhttp3:okhttp:3.2.0'
compile 'com.squareup.picasso:picasso:2.5.2'    
compile 'com.jakewharton.picasso:picasso2-okhttp3-downloader:1.0.2'

例子:

File httpCacheDirectory = new File(getCacheDir(), "picasso-cache");
Cache cache = new Cache(httpCacheDirectory, 10 * 1024 * 1024);

OkHttpClient.Builder clientBuilder = new OkHttpClient.Builder().cache(cache);
Picasso.Builder picassoBuilder = new Picasso.Builder(getApplicationContext());
picassoBuilder.downloader(new OkHttp3Downloader(clientBuilder.build()));
Picasso picasso = picassoBuilder.build();
try {
   Picasso.setSingletonInstance(picasso);
} catch (IllegalStateException ignored) {
  Log.e(LOG_TAG, "Picasso instance already used");
}