我已将 android-support-v4.jar 添加到我的项目库中...但我收到此错误：
Could not find class 'android.app.Notification$Builder', referenced from method org.secure.sms.SmsReceiver.showNotification
Could not find class 'android.support.v4.app.NotificationCompat$Builder', referenced from method org.secure.sms.SmsReceiver.createNotification
FATAL EXCEPTION: main
java.lang.NoClassDefFoundError: android.support.v4.app.NotificationCompat$Builder
at org.secure.sms.SmsReceiver.createNotification(SmsReceiver.java:108)
at org.secure.sms.SmsReceiver.onReceive(SmsReceiver.java:136)
at android.app.ActivityThread.handleReceiver(ActivityThread.java:1794)
at android.app.ActivityThread.access$2400(ActivityThread.java:117)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:981)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:3683)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
at dalvik.system.NativeStart.main(Native Method)
哪里有问题？？
截屏：https://i.stack.imgur.com/I95ke.jpg https://i.stack.imgur.com/I95ke.jpg
一定要有android-support-v4.jar在你的文件夹内/libs并将其添加到您的班级中：
import android.support.v4.app.NotificationCompat;
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