Problèmes SQLite même avec des exemples d'applications

Question

J'ai eu des problèmes pour faire fonctionner mes bases de données SQLite et je pense que cela pourrait être autre chose que mon code. J'ai téléchargé un exemple d'application SQLite à partir de here et cela ne fonctionne pas sur mon émulateur ou mon téléphone. Voici les erreurs de LogCat à regarder.

Si vous avez des idées sur ce qui pourrait se passer s'il vous plaît faites le moi savoir.

03-04 00:48:26.472: E/Database(6653): Error inserting DeptID=3 DeptName=HR 
03-04 00:48:26.472: E/Database(6653): android.database.sqlite.SQLiteConstraintException: error code 19: constraint failed 
03-04 00:48:26.472: E/Database(6653): at android.database.sqlite.SQLiteStatement.native_execute(Native Method) 
03-04 00:48:26.472: E/Database(6653): at android.database.sqlite.SQLiteStatement.execute(SQLiteStatement.java:61) 
03-04 00:48:26.472: E/Database(6653): at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1582) 
03-04 00:48:26.472: E/Database(6653): at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1426) 
03-04 00:48:26.472: E/Database(6653): at mina.android.DatabaseDemo.DatabaseHelper.InsertDepts(DatabaseHelper.java:144) 
03-04 00:48:26.472: E/Database(6653): at mina.android.DatabaseDemo.DatabaseHelper.onCreate(DatabaseHelper.java:65) 
03-04 00:48:26.472: E/Database(6653): at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:126) 
03-04 00:48:26.472: E/Database(6653): at mina.android.DatabaseDemo.DatabaseHelper.getEmployeeCount(DatabaseHelper.java:105) 
03-04 00:48:26.472: E/Database(6653): at mina.android.DatabaseDemo.AddEmployee.onStart(AddEmployee.java:40) 
03-04 00:48:26.472: E/Database(6653): at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1129) 
03-04 00:48:26.472: E/Database(6653): at android.app.Activity.performStart(Activity.java:3791) 
03-04 00:48:26.472: E/Database(6653): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1624) 
03-04 00:48:26.472: E/Database(6653): at android.app.ActivityThread.startActivityNow(ActivityThread.java:1491) 
03-04 00:48:26.472: E/Database(6653): at android.app.LocalActivityManager.moveToState(LocalActivityManager.java:127) 
03-04 00:48:26.472: E/Database(6653): at android.app.LocalActivityManager.startActivity(LocalActivityManager.java:339) 
03-04 00:48:26.472: E/Database(6653): at android.widget.TabHost$IntentContentStrategy.getContentView(TabHost.java:657) 
03-04 00:48:26.472: E/Database(6653): at android.widget.TabHost.setCurrentTab(TabHost.java:329) 
03-04 00:48:26.472: E/Database(6653): at android.widget.TabHost.addTab(TabHost.java:219) 
03-04 00:48:26.472: E/Database(6653): at mina.android.DatabaseDemo.DatabaseDemo.SetupTabs(DatabaseDemo.java:85) 
03-04 00:48:26.472: E/Database(6653): at mina.android.DatabaseDemo.DatabaseDemo.onCreate(DatabaseDemo.java:32) 
03-04 00:48:26.472: E/Database(6653): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
03-04 00:48:26.472: E/Database(6653): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615) 
03-04 00:48:26.472: E/Database(6653): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667) 
03-04 00:48:26.472: E/Database(6653): at android.app.ActivityThread.access$1500(ActivityThread.java:117) 
03-04 00:48:26.472: E/Database(6653): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935) 
03-04 00:48:26.472: E/Database(6653): at android.os.Handler.dispatchMessage(Handler.java:99) 
03-04 00:48:26.472: E/Database(6653): at android.os.Looper.loop(Looper.java:130) 
03-04 00:48:26.472: E/Database(6653): at android.app.ActivityThread.main(ActivityThread.java:3688) 
03-04 00:48:26.472: E/Database(6653): at java.lang.reflect.Method.invokeNative(Native Method) 
03-04 00:48:26.472: E/Database(6653): at java.lang.reflect.Method.invoke(Method.java:507) 
03-04 00:48:26.472: E/Database(6653): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842) 
03-04 00:48:26.472: E/Database(6653): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) 
03-04 00:48:26.472: E/Database(6653): at dalvik.system.NativeStart.main(Native Method) 
03-04 00:48:26.925: W/PhoneWindow(6653): Previously focused view reported id 2131034112 during save, but can't be found during restore. 

Answer 1

Une erreur est survenue dans cet exemple. Regardez DatabaseHelper:144. Vous trouverez cette ligne de code deux fois:

db.insert(deptTable, colDeptID, cv); 

Le premier appel réussit, le second tente d'insérer une ligne avec le même ID, il porte atteinte à la contrainte de clé primaire. Supprime-le.

Je ne comprends pas pourquoi quelqu'un publie des exemples de code non testés ...