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POAndroid SDK Update (revision 18) causes NullPointer Exception
primarykey
Id
10121665
data
AcceptedAnswerId
10122920
AnswerCount
1
ClosedDate
CommentCount
5
CommunityOwnedDate
CreationDate
2012-04-12T10:19:07.990
FavoriteCount
0
LastActivityDate
2012-04-12T11:46:43.293
LastEditDate
2012-04-12T11:31:52.530
LastEditorUserId
1292838
OwnerUserId
1292838
ParentId
0
PostTypeId
1
Score
0
ViewCount
353
LastEditorDisplayName
text
Body
Slowly but surely I hat to update the android SDK… Today I update the SDK to revision 18 and my project (before the update perfectly working) throws a NullPointer Exception even I just start it up from eclipse. I’m using eclipse with the android ADT and also update this part after update the SDK. I also tried “Fix Project Properties” with no result. In the meanwhile my project is quit big so for the start I just post the LogCat messages, if someone need more just say it, I will post it. But I’m really disappointed that every time I update the SDK my project throws some new, mysterious errors (run into the external lib problem with revision 17…). Hope someone can help me out! I don’t think it’s a problem with the code anyway. Its something they changed somewhere I don’t know :/ [Update] I get some extra time to debug the code. The problem occurs in the construtor. It look like this (suprise, suprise): <pre><code>@Override public void onCreate(Bundle _savedInstanceState) { /// Einstiegspunkt der Android App super.onCreate(_savedInstanceState); setContentView(R.layout.login); LoadSharedPreferences(); } </code></pre> The exception throws after the activity tries to go to the LoadSharedPrefrerences method... [Update: Code around line 49] <pre><code>... SharedPreferences data = getSharedPreferences(_saveUserDataRef, MODE_PRIVATE); String tmpUsername = data.getString("username", null); String tmpPassword = data.getString("password", null); username.setText(tmpUsername); password.setText(tmpPassword); ... </code></pre> This snippet save the username and password if you want the app to remeber these data for you. So you dont need to write it everytime you log on. LogCat: <pre><code>04-12 12:09:47.615: D/dalvikvm(1094): GC_EXTERNAL_ALLOC freed 47K, 48% free 2835K/5379K, external 0K/0K, paused 78ms 04-12 12:09:47.686: I/[POST_RESELECT](1094): [spanChange] (o, oldStart, newStart, oldEnd, newEnd)=(android.text.Selection$START@401462d0,-1,0,-1,0) 04-12 12:09:47.686: I/[POST_RESELECT](1094): [spanChange] (o, oldStart, newStart, oldEnd, newEnd)=(android.text.Selection$END@4011b730,-1,0,-1,0) 04-12 12:09:47.696: I/[POST_RESELECT](1094): [spanChange] (o, oldStart, newStart, oldEnd, newEnd)=(android.text.Selection$START@401462d0,-1,0,-1,0) 04-12 12:09:47.696: I/[POST_RESELECT](1094): [spanChange] (o, oldStart, newStart, oldEnd, newEnd)=(android.text.Selection$END@4011b730,-1,0,-1,0) 04-12 12:09:47.696: I/[POST_RESELECT](1094): [spanChange] (o, oldStart, newStart, oldEnd, newEnd)=(android.text.Selection$START@401462d0,-1,0,-1,0) 04-12 12:09:47.696: I/[POST_RESELECT](1094): [spanChange] (o, oldStart, newStart, oldEnd, newEnd)=(android.text.Selection$END@4011b730,-1,0,-1,0) 04-12 12:09:47.696: I/[POST_RESELECT](1094): [spanChange] (o, oldStart, newStart, oldEnd, newEnd)=(android.text.Selection$START@401462d0,-1,0,-1,0) 04-12 12:09:47.696: I/[POST_RESELECT](1094): [spanChange] (o, oldStart, newStart, oldEnd, newEnd)=(android.text.Selection$END@4011b730,-1,0,-1,0) 04-12 12:09:47.716: I/[POST_RESELECT](1094): [spanChange] (o, oldStart, newStart, oldEnd, newEnd)=(android.text.Selection$START@401462d0,-1,0,-1,0) 04-12 12:09:47.716: I/[POST_RESELECT](1094): [spanChange] (o, oldStart, newStart, oldEnd, newEnd)=(android.text.Selection$END@4011b730,-1,0,-1,0) 04-12 12:09:47.716: I/[POST_RESELECT](1094): [spanChange] (o, oldStart, newStart, oldEnd, newEnd)=(android.text.Selection$START@401462d0,-1,0,-1,0) 04-12 12:09:47.716: I/[POST_RESELECT](1094): [spanChange] (o, oldStart, newStart, oldEnd, newEnd)=(android.text.Selection$END@4011b730,-1,0,-1,0) 04-12 12:09:47.716: D/AndroidRuntime(1094): Shutting down VM 04-12 12:09:47.716: W/dalvikvm(1094): threadid=1: thread exiting with uncaught exception (group=0x400205a0) 04-12 12:09:47.726: E/AndroidRuntime(1094): FATAL EXCEPTION: main 04-12 12:09:47.726: E/AndroidRuntime(1094): java.lang.RuntimeException: Unable to start activity ComponentInfo{de.tzm.seanwesenheitsliste/de.tzm.seanwesenheitsliste.SEAnwesenheitslisteMainActivity}: java.lang.NullPointerException 04-12 12:09:47.726: E/AndroidRuntime(1094): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1830) 04-12 12:09:47.726: E/AndroidRuntime(1094): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1851) 04-12 12:09:47.726: E/AndroidRuntime(1094): at android.app.ActivityThread.access$1500(ActivityThread.java:132) 04-12 12:09:47.726: E/AndroidRuntime(1094): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1038) 04-12 12:09:47.726: E/AndroidRuntime(1094): at android.os.Handler.dispatchMessage(Handler.java:99) 04-12 12:09:47.726: E/AndroidRuntime(1094): at android.os.Looper.loop(Looper.java:150) 04-12 12:09:47.726: E/AndroidRuntime(1094): at android.app.ActivityThread.main(ActivityThread.java:4277) 04-12 12:09:47.726: E/AndroidRuntime(1094): at java.lang.reflect.Method.invokeNative(Native Method) 04-12 12:09:47.726: E/AndroidRuntime(1094): at java.lang.reflect.Method.invoke(Method.java:507) 04-12 12:09:47.726: E/AndroidRuntime(1094): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 04-12 12:09:47.726: E/AndroidRuntime(1094): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 04-12 12:09:47.726: E/AndroidRuntime(1094): at dalvik.system.NativeStart.main(Native Method) 04-12 12:09:47.726: E/AndroidRuntime(1094): Caused by: java.lang.NullPointerException 04-12 12:09:47.726: E/AndroidRuntime(1094): at de.tzm.seanwesenheitsliste.SEAnwesenheitslisteMainActivity.LoadSharedPreferences(SEAnwesenheitslisteMainActivity.java:49) 04-12 12:09:47.726: E/AndroidRuntime(1094): at de.tzm.seanwesenheitsliste.SEAnwesenheitslisteMainActivity.onCreate(SEAnwesenheitslisteMainActivity.java:32) 04-12 12:09:47.726: E/AndroidRuntime(1094): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1072) 04-12 12:09:47.726: E/AndroidRuntime(1094): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1794) 04-12 12:09:47.726: E/AndroidRuntime(1094): ... 11 more </code></pre>
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<android><nullpointerexception><revision>
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Android SDK Update (revision 18) causes NullPointer Exception
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