我以前在我的应用程序中使用过javamail实现，我在这里找到： javamail-android
直到最近，一切正常。我只是在我的构建路径下将.jar文件添加为外部jar。我最近更新到JRE7和ADT 17，现在我正在验证错误！这似乎围绕着javax.mail.Multipart，但我不确定如何解决这个问题。我尝试过的事情：
我可以运行应用程序，成功验证凭据，加载IMAP文件夹和消息，但我现在无法获取消息的Multipart内容。这是它似乎失败的地方，偶尔在第一次启动库时。以下是我的追踪：
W/dalvikvm(16903): VFY: unable to find class referenced in signature (Ljavax/mail/Multipart;)
I/dalvikvm(16903): Could not find method javax.mail.Multipart.getCount, referenced from method com.control.process.MainActivity.getAttachment
W/dalvikvm(16903): VFY: unable to resolve virtual method 1033: Ljavax/mail/Multipart;.getCount ()I
D/dalvikvm(16903): VFY: replacing opcode 0x6e at 0x0002
D/dalvikvm(16903): Making a copy of Lcom/control/process/MainActivity;.getAttachment code (205 bytes)
W/dalvikvm(16903): VFY: unable to find class referenced in signature (Ljavax/mail/Multipart;)
I/dalvikvm(16903): Could not find method javax.mail.Multipart.getCount, referenced from method com.control.process.MainActivity.getMessageBody
W/dalvikvm(16903): VFY: unable to resolve virtual method 1033: Ljavax/mail/Multipart;.getCount ()I
D/dalvikvm(16903): VFY: replacing opcode 0x6e at 0x0001
D/dalvikvm(16903): Making a copy of Lcom/control/process/MainActivity;.getMessageBody code (168 bytes)
I/ActivityManager(64): Displayed activity com.control.process/.MainActivity: 1229 ms (total 2508 ms)
W/KeyCharacterMap(16903): No keyboard for id 0
W/KeyCharacterMap(16903): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
I/dalvikvm(16903): Could not find method javax.mail.Session.getDefaultInstance, referenced from method com.control.process.MainActivity$ServerCheckTask.doInBackground
W/dalvikvm(16903): VFY: unable to resolve static method 1038: Ljavax/mail/Session;.getDefaultInstance (Ljava/util/Properties;Ljavax/mail/Authenticator;)Ljavax/mail/Session;
D/dalvikvm(16903): VFY: replacing opcode 0x71 at 0x0060
D/dalvikvm(16903): Making a copy of Lcom/control/process/MainActivity$ServerCheckTask;.doInBackground code (2706 bytes)
W/dalvikvm(16903): VFY: unable to resolve exception class 271 (Ljavax/mail/NoSuchProviderException;)
W/dalvikvm(16903): VFY: unable to resolve exception class 271 (Ljavax/mail/NoSuchProviderException;)
W/dalvikvm(16903): VFY: unable to resolve exception class 271 (Ljavax/mail/NoSuchProviderException;)
W/dalvikvm(16903): VFY: unable to resolve exception class 271 (Ljavax/mail/NoSuchProviderException;)
W/dalvikvm(16903): VFY: unable to resolve exception class 271 (Ljavax/mail/NoSuchProviderException;)
W/dalvikvm(16903): VFY: unable to find exception handler at addr 0x1cc
W/dalvikvm(16903): VFY: rejected Lcom/control/process/MainActivity$ServerCheckTask;.doInBackground ([Ljava/lang/Object;)Ljava/lang/Object;
W/dalvikvm(16903): VFY: rejecting opcode 0x0d at 0x01cc
W/dalvikvm(16903): VFY: rejected Lcom/control/process/MainActivity$ServerCheckTask;.doInBackground ([Ljava/lang/Object;)Ljava/lang/Object;
W/dalvikvm(16903): Verifier rejected class Lcom/control/process/MainActivity$ServerCheckTask;
D/AndroidRuntime(16903): Shutting down VM
W/dalvikvm(16903): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
E/AndroidRuntime(16903): Uncaught handler: thread main exiting due to uncaught exception
E/AndroidRuntime(16903): java.lang.VerifyError: com.control.process.MainActivity$ServerCheckTask
E/AndroidRuntime(16903): at com.control.process.MainActivity.onOptionsItemSelected(MainActivity.java:197)
E/AndroidRuntime(16903): at android.app.Activity.onOptionsItemSelected(Activity.java:2282)
E/AndroidRuntime(16903): at android.app.Activity.onMenuItemSelected(Activity.java:2170)
E/AndroidRuntime(16903): at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected(PhoneWindow.java:730)
E/AndroidRuntime(16903): at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:139)
E/AndroidRuntime(16903): at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:855)
E/AndroidRuntime(16903): at com.android.internal.view.menu.IconMenuView.invokeItem(IconMenuView.java:525)
E/AndroidRuntime(16903): at com.android.internal.view.menu.IconMenuItemView.performClick(IconMenuItemView.java:122)
E/AndroidRuntime(16903): at android.view.View.onTouchEvent(View.java:4179)
E/AndroidRuntime(16903): at android.widget.TextView.onTouchEvent(TextView.java:6541)
E/AndroidRuntime(16903): at android.view.View.dispatchTouchEvent(View.java:3709)
E/AndroidRuntime(16903): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884)
E/AndroidRuntime(16903): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884)
E/AndroidRuntime(16903): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1643)
E/AndroidRuntime(16903): at android.view.ViewRoot.handleMessage(ViewRoot.java:1691)
E/AndroidRuntime(16903): at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime(16903): at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime(16903): at android.app.ActivityThread.main(ActivityThread.java:4363)
E/AndroidRuntime(16903): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(16903): at java.lang.reflect.Method.invoke(Method.java:521)
E/AndroidRuntime(16903): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
E/AndroidRuntime(16903): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
E/AndroidRuntime(16903): at dalvik.system.NativeStart.main(Native Method)
我唯一的另一个想法是恢复到早期版本的JDK和ADT构建？ 需要帮助，任何建议将不胜感激！
修改
由于某些原因，在导入必要的jar文件时，mailcap设置被清除。我在阅读Multipart消息之前重新加载了设置，它按预期工作。
MailcapCommandMap mc =（MailcapCommandMap）CommandMap.getDefaultCommandMap（）; mc.addMailcap（“text / html ;; x-java-content-handler = com.sun.mail.handlers.text_html”）; mc.addMailcap（“text / xml ;; x-java-content-handler = com.sun.mail.handlers.text_xml”）; mc.addMailcap（“text / plain ;; x-java-content-handler = com.sun.mail.handlers.text_plain”）; mc.addMailcap（“multipart / * ;; x-java-content-handler = com.sun.mail.handlers.multipart_mixed”）; mc.addMailcap（“message / rfc822 ;; x-java-content-handler = com.sun.mail.handlers.message_rfc822”）; CommandMap.setDefaultCommandMap（MC）;
答案 0 :(得分：0)