java.lang.NoClassDefFoundError: javax.activation.DataHandler的解决办法

Android发邮件时出现一下问题：

 

04-20 09:28:23.663: E/AndroidRuntime(13202):    java.lang.NoClassDefFoundError: javax.activation.DataHandler

04-20 09:28:23.663: E/AndroidRuntime(13202): 	at javax.mail.internet.MimeMessage.setContent(MimeMessage.java:1454)

04-20 09:28:23.663: E/AndroidRuntime(13202): 	at javax.mail.internet.MimeBodyPart.setText(MimeBodyPart.java:1075)

04-20 09:28:23.663: E/AndroidRuntime(13202): 	at javax.mail.internet.MimeMessage.setText(MimeMessage.java:1493)

04-20 09:28:23.663: E/AndroidRuntime(13202): 	at javax.mail.internet.MimeMessage.setText(MimeMessage.java:1477)

04-20 09:28:23.663: E/AndroidRuntime(13202): 	at cn.edu.zzu.mail.SendMail.send(SendMail.java:42)

04-20 09:28:23.663: E/AndroidRuntime(13202): 	at cn.edu.zzu.mail.SendMail.sendMail(SendMail.java:63)

04-20 09:28:23.663: E/AndroidRuntime(13202): 	at cn.edu.zzu.ui.SettingSuggestUi$2$1.run(SettingSuggestUi.java:79)

解决办法在你的项目中导入additionnal.jar，具体大家可以打开 https://code.google.com/p/javamail-android/downloads/list看一下，上面明确指出

 

 

activation.jar

JAF for android (need additionnal.jar)