无法提取a.a.k@上的信任管理器...- PayPal-Android-SDK 2.13.3

Question

我最近将我的Song Scrapbook应用程序更新到了最新版本，并确保更新了该应用程序使用的所有第三方API。其中一个第三方工具是PayPal Android SDK，我用它来赚钱，因为我所在的国家目前不支持Google Wallet Merchant服务-这意味着我不能在应用程序中使用Play Store或一次性购买系统。

然而，在我的应用程序中(通过mavenCentral)将PayPal SDK更新到最新版本后，每次我想要执行PayPal事务时，我都会在Android Studio (版本: 1.5.1)中得到以下错误：

    debug W/paypal.sdk: PayPalService created. API:19 PayPalSDK/PayPal-Android-SDK 2.13.3 (Android 4.4.4; samsung GT-I9060I; )
    03-20 16:58:45.540 7804-7804/com.whitsoft.songscrapbook.debug W/ApplicationPackageManager: getCSCPackageItemText()
    03-20 16:58:45.550 7804-7804/com.whitsoft.songscrapbook.debug W/ApplicationPackageManager: getCSCPackageItemText()
    03-20 16:58:45.550 7804-7804/com.whitsoft.songscrapbook.debug I/dalvikvm: Could not find method com.google.android.gms.common.GooglePlayServicesUtil.isGooglePlayServicesAvailable, referenced from method com.paypal.android.sdk.at.a
    03-20 16:58:45.550 7804-7804/com.whitsoft.songscrapbook.debug W/dalvikvm: VFY: unable to resolve static method 10405: Lcom/google/android/gms/common/GooglePlayServicesUtil;.isGooglePlayServicesAvailable (Landroid/content/Context;)I
    03-20 16:58:45.610 7804-7804/com.whitsoft.songscrapbook.debug I/dalvikvm: Could not find method io.card.payment.CardIOActivity.checkSelfPermission, referenced from method io.card.payment.CardIOActivity.onCreate
    03-20 16:58:45.610 7804-7804/com.whitsoft.songscrapbook.debug W/dalvikvm: VFY: unable to resolve virtual method 13172: Lio/card/payment/CardIOActivity;.checkSelfPermission (Ljava/lang/String;)I
    03-20 16:58:45.820 7804-7843/com.whitsoft.songscrapbook.debug I/System: Loaded time zone names for "en" in 132ms (127ms in ICU)
    03-20 16:58:45.840 7804-7804/com.whitsoft.songscrapbook.debug W/dalvikvm: threadid=1: thread exiting with uncaught exception (group=0x4168cbc0)
    03-20 16:58:45.840 7804-7804/com.whitsoft.songscrapbook.debug E/AndroidRuntime: FATAL EXCEPTION: main
                                                                            Process: com.whitsoft.songscrapbook.debug, PID: 7804
                                                                            java.lang.RuntimeException: Unable to start service com.paypal.android.sdk.payments.PayPalService@41e9c5a0 with Intent { cmp=com.whitsoft.songscrapbook.debug/com.paypal.android.sdk.payments.PayPalService (has extras) }: java.lang.IllegalStateException: Unable to extract the trust manager on a.a.k@41ff61a0, sslSocketFactory is class com.paypal.android.sdk.bn
                                                                                at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2987)
                                                                                at android.app.ActivityThread.access$2100(ActivityThread.java:166)
                                                                                at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1380)
                                                                                at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                                at android.os.Looper.loop(Looper.java:136)
                                                                                at android.app.ActivityThread.main(ActivityThread.java:5584)
                                                                                at java.lang.reflect.Method.invokeNative(Native Method)
                                                                                at java.lang.reflect.Method.invoke(Method.java:515)
                                                                                at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1268)
                                                                                at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1084)
                                                                                at dalvik.system.NativeStart.main(Native Method)
                                                                             Caused by: java.lang.IllegalStateException: Unable to extract the trust manager on a.a.k@41ff61a0, sslSocketFactory is class com.paypal.android.sdk.bn
                                                                                at a.ak.<init>(Unknown Source)
                                                                                at a.ak.<init>(Unknown Source)
                                                                                at a.am.b(Unknown Source)
                                                                                at com.paypal.android.sdk.bt.<init>(Unknown Source)
                                                                                at com.paypal.android.sdk.payments.PayPalService.a(Unknown Source)
                                                                                at com.paypal.android.sdk.payments.PayPalService.onStartCommand(Unknown Source)
                                                                                at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2970)
                                                                                at android.app.ActivityThread.access$2100(ActivityThread.java:166) 
                                                                                at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1380) 
                                                                                at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                                                at android.os.Looper.loop(Looper.java:136) 
                                                                                at android.app.ActivityThread.main(ActivityThread.java:5584) 
                                                                                at java.lang.reflect.Method.invokeNative(Native Method) 
                                                                                at java.lang.reflect.Method.invoke(Method.java:515) 
                                                                                at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1268) 
                                                                                at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1084) 
                                                                                at dalvik.system.NativeStart.main(Native Method) 
     03-20 17:03:46.103 7804-7804/? I/Process: Sending signal. PID: 7804 SIG: 9

我知道这个问题不是由我测试应用程序的设备引起的-因为我在两个截然不同的设备(三星大新和立方体X15)上测试了这个应用程序，这两个设备都产生了类似的错误。我试着用谷歌搜索这个问题，试图解决这个问题，但经过几个小时的搜索，我没有找到解决方案。

任何帮助都将不胜感激。SilSur。

Answer 1

因此，我花了大约5个小时才弄清楚这个问题-通过一步一步地消除问题的可能原因，我实现了这一点。

事实证明，真正的问题是我匆忙地更新了这款应用。原因是PayPal SDK2.13.3版本在'proguard-rules.pro‘文件中有一个新规则，其中包含以下内容非常重要：

规则如下：

    # This is added for okhttp 3.1.2 bug fix as shown at https://github.com/square/okhttp/issues/2323
    -keepclassmembers class * implements javax.net.ssl.SSLSocketFactory {
         private javax.net.ssl.SSLSocketFactory delegate;
    }

这防止了Gradle的minify (混淆)进程从PayPal SDK中先前导致安全层套接字工厂问题的bug修复中删除重要代码。所以是的-这就是修复:更新的应用程序现在可以完美地工作(就像所要求的那样)。

学到的教训:确保你的“前卫规则”完全符合它们的预期！

完毕完毕，SilSur。