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안녕하세요, 이건 내 코드입니다 : DAtabaseConnector 클래스가스피너 커서
private void fillSpinner(){
DatabaseConnector dbConnector = new DatabaseConnector(this);
Cursor c = dbConnector.getAllCasas();
startManagingCursor(c);
String[] from = new String[]{"nombrecasa"};
int[] to = new int[]{android.R.id.text1};
SimpleCursorAdapter adapter =
new SimpleCursorAdapter(this, android.R.layout.simple_spinner_item, c, from, to);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
Spinner s = (Spinner) findViewById(R.id.casaspinner);
s.setAdapter(adapter);
}
어디 모든 커서가 있고 casaspinner가 XML 파일에 올바르게 선언되어 있습니다.
onCreate 메서드에서이 메서드를 호출하면 "죄송합니다. 응용 프로그램이 예기치 않게 중지되었습니다."logcat에 "NullPointerException"이 표시됩니다. 여기에서 몇 가지 대답을 시도했지만 충돌이 계속 발생합니다.
12-09 10:02:49.399: W/ResourceType(322): Attempt to retrieve bag 0x7f060003 which is invalid or in a cycle.
12-09 10:02:49.489: D/AndroidRuntime(322): Shutting down VM
12-09 10:02:49.489: W/dalvikvm(322): threadid=1: thread exiting with uncaught exception (group=0x40015560)
12-09 10:02:49.509: E/AndroidRuntime(322): FATAL EXCEPTION: main
12-09 10:02:49.509: E/AndroidRuntime(322): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.appvino/com.example.appvino.Actualizacion}: java.lang.NullPointerException
12-09 10:02:49.509: E/AndroidRuntime(322): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
12-09 10:02:49.509: E/AndroidRuntime(322): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
12-09 10:02:49.509: E/AndroidRuntime(322): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
12-09 10:02:49.509: E/AndroidRuntime(322): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
12-09 10:02:49.509: E/AndroidRuntime(322): at android.os.Handler.dispatchMessage(Handler.java:99)
12-09 10:02:49.509: E/AndroidRuntime(322): at android.os.Looper.loop(Looper.java:123)
12-09 10:02:49.509: E/AndroidRuntime(322): at android.app.ActivityThread.main(ActivityThread.java:3683)
12-09 10:02:49.509: E/AndroidRuntime(322): at java.lang.reflect.Method.invokeNative(Native Method)
12-09 10:02:49.509: E/AndroidRuntime(322): at java.lang.reflect.Method.invoke(Method.java:507)
12-09 10:02:49.509: E/AndroidRuntime(322): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
12-09 10:02:49.509: E/AndroidRuntime(322): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
12-09 10:02:49.509: E/AndroidRuntime(322): at dalvik.system.NativeStart.main(Native Method)
12-09 10:02:49.509: E/AndroidRuntime(322): Caused by: java.lang.NullPointerException
12-09 10:02:49.509: E/AndroidRuntime(322): at com.example.appvino.DatabaseConnector.getAllCepas(DatabaseConnector.java:95)
12-09 10:02:49.509: E/AndroidRuntime(322): at com.example.appvino.Actualizacion.llenaCepaSpinner(Actualizacion.java:129)
12-09 10:02:49.509: E/AndroidRuntime(322): at com.example.appvino.Actualizacion.onCreate(Actualizacion.java:40)
12-09 10:02:49.509: E/AndroidRuntime(322): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
12-09 10:02:49.509: E/AndroidRuntime(322): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
12-09 10:02:49.509: E/AndroidRuntime(322): ... 11 more
문제는 95''라인에서'DatabaseConnector' 클래스의'getAllCepas' 방법에'null' 참조를 가지고에서 비롯됩니다. – Luksprog