什么是这个错误im在java（android）ImageIO类？

Question

错误是：

02-22 22:58:11.208: ERROR/AndroidRuntime(498): FATAL EXCEPTION: main 
02-22 22:58:11.208: ERROR/AndroidRuntime(498): java.lang.NoClassDefFoundError: javax.imageio.ImageIO 
02-22 22:58:11.208: ERROR/AndroidRuntime(498):  at aynoo.forms.FreindMessagesActivity.convertInputStreamToString(FreindMessagesActivity.java:493) 
02-22 22:58:11.208: ERROR/AndroidRuntime(498):  at aynoo.forms.FreindMessagesA 

Answer 1

该类不是由JVM Dalvik的提供。以下是Android SDK包含的软件包列表：

http://developer.android.com/reference/packages.html