你好，遇到这么一个崩溃错误。

[0xFF336699]

出错堆栈

1 java.lang.RuntimeException:Unable to start activity ComponentInfo{com.baobeidaola.fanli/com.cretin.www.cretinautoupdatelibrary.activity.UpdateType12Activity}: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.cretin.www.cretinautoupdatelibrary.model.DownloadInfo.getUpdateLog()' on a null object reference
2 android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2951)
3 ......
4 Caused by:
5 java.lang.NullPointerException:Attempt to invoke virtual method 'java.lang.String com.cretin.www.cretinautoupdatelibrary.model.DownloadInfo.getUpdateLog()' on a null object reference
6 com.cretin.www.cretinautoupdatelibrary.activity.UpdateType12Activity.setDataAndListener(UpdateType12Activity.java:40)
7 com.cretin.www.cretinautoupdatelibrary.activity.UpdateType12Activity.onCreate(UpdateType12Activity.java:36)
8 android.app.Activity.performCreate(Activity.java:7144)
9 android.app.Activity.performCreate(Activity.java:7135)
10 android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
11 android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2931)
12 android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3086)
13 android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
14 android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
15 android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
16 android.app.ActivityThread$H.handleMessage(ActivityThread.java:1816)
17 android.os.Handler.dispatchMessage(Handler.java:106)
18 android.os.Looper.loop(Looper.java:193)
19 android.app.ActivityThread.main(ActivityThread.java:6718)
20 java.lang.reflect.Method.invoke(Native Method)