OkHttpClient 的 NoClassDefFoundError [英] NoClassDefFoundError for OkHttpClient

问题描述

在 gradle 中添加 facebook 依赖项后，我收到此运行时错误:

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

请注意，我也在使用 okhttp:

 编译 'com.squareup.okhttp:okhttp:2.5.0'

和错误日志是:

 E/AndroidRuntime:致命异常:Thread-109754进程:com.venkat.project，PID:4453java.lang.NoClassDefFoundError: com.squareup.okhttp.internal.Util在 com.squareup.okhttp.OkHttpClient.<clinit>(OkHttpClient.java:57)在 com.venkat.project.http.MyHTTPThread.run(MyHTTPThread.java:127)在 com.venkat.project.http.MyHTTPThread.run(MyHTTPThread.java:61)在 java.lang.Thread.run(Thread.java:841)02-23 18:11:02.729 4453-4573/com.venkat.project I/dalvikvm:拒绝在先前失败的类 Lcom/squareup/okhttp/OkHttpClient 上重新初始化；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 上它可以工作.

解决方案

你正在得到

 java.lang.NoClassDefFoundError: com.squareup.okhttp.internal.Util在 com.squareup.okhttp.OkHttpClient.<clinit>(OkHttpClient.java:57)在 com.venkat.project.http.MyHTTPThread.run(MyHTTPThread.java:127)在 com.venkat.project.http.MyHTTPThread.run(MyHTTPThread.java:61)

OkHttpClient 的 NoClassDefFoundError

公共类 NoClassDefFoundError 扩展了 LinkageError

<块引用>

如果 Java 虚拟机或 ClassLoader 实例试图在类的定义中加载(作为正常方法调用的一部分或作为使用 new 表达式创建新实例的一部分)并且没有可以找到类的定义.

引自 NoClassDefFoundError

你应该使用

编译'com.facebook.android:facebook-android-sdk:4.10.0'

之后你会得到这个错误以非零退出值 2 结束

然后

defaultConfig {...minSdkVersion 14//低于14不支持multidextargetSdkVersion//你的//启用多索引支持.multiDexEnabled true}依赖{实现 'com.android.support:multidex:1.0.0'}

1. 添加multiDexEnabled true

2. 调用implementation'com.android.support:multidex:1.0.2'

<块引用>

网络有问题时OkHttp坚持:它会默默地从常见的连接问题中恢复.如果您的服务有多个IP 地址 OkHttp 将尝试备用地址，如果第一个连接失败.这对于 IPv4+IPv6 和托管服务是必需的在冗余数据中心.

您可以调用最新版本

实现'com.squareup.okhttp3:okhttp:3.2.0'

然后

清理和重新构建 &同步您的项目.希望这会有所帮助.

After adding the facebook dependency in gradle I'm getting this runtime error:

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

Please notice that I'm also using okhttp:

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

and error log is:

 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

Note: I'm getting this error on Samsung mobile 4.4 but on the emulator and on moto g 5.0 it works.

解决方案

You are getting

       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)

NoClassDefFoundError for OkHttpClient

public class NoClassDefFoundError extends LinkageError

Thrown if the Java Virtual Machine or a ClassLoader instance tries to load in the definition of a class (as part of a normal method call or as part of creating a new instance using the new expression) and no definition of the class could be found.

Quote from NoClassDefFoundError

You should use

compile 'com.facebook.android:facebook-android-sdk:4.10.0'

After that you can get this error finished with non-zero exit value 2

Then

defaultConfig {
    ...
    minSdkVersion 14 //lower than 14 doesn't support multidex
    targetSdkVersion //Yours

    // Enabling multidex support.
    multiDexEnabled true
}

dependencies {
 implementation 'com.android.support:multidex:1.0.0'
}

1. Add multiDexEnabled true

2. Call implementation'com.android.support:multidex:1.0.2'

OkHttp perseveres when the network is troublesome: it will silently recover from common connection problems. If your service has multiple IP addresses OkHttp will attempt alternate addresses if the first connect fails. This is necessary for IPv4+IPv6 and for services hosted in redundant data centers.

You can call latest version

implementation'com.squareup.okhttp3:okhttp:3.2.0'

Then

Clean and Re-Build & Sync Your Project . Hope this helps .

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