Index 0 angefordert, mit einer Größe von 0 MyHelper Java Error

Question

Ich kenne dieses Problem so oft gefragt. und ich lese jeden Beitrag, der von anderen hier gemacht wurde, aber ich kann dieses Problem in meinem Fall wirklich nicht lösen.

Bitte helfen Sie mir, warum das passiert und wie es zu beheben?

dies ist mein Code:

public StoreData getStore(String storeid) { 
    SQLiteDatabase db = this.getReadableDatabase(); 
    Cursor c = db.rawQuery("select * from " + TABLE_NAME + " where " 
      + COL_STORE_ID + "=?", new String[]{storeid}); 
    StoreData data; 
    System.out.println("This is the problem"); 
    c.moveToFirst(); 
     data = new StoreData(
       c.getString(c.getColumnIndex(COL_STORE_ID)), 
       c.getString(c.getColumnIndex(COL_ACCOUNT_ID)), 
       c.getString(c.getColumnIndex(COL_KOTA_ID)), 
       c.getString(c.getColumnIndex(COL_STORE_NAME)), 
       c.getString(c.getColumnIndex(COL_STORE_MANAGER)), 
       c.getString(c.getColumnIndex(COL_STORE_ADDRESS)), 
       c.getString(c.getColumnIndex(COL_STORE_TELEPHONE)), 
       c.getString(c.getColumnIndex(COL_STORE_GEO_LAT)), 
       c.getString(c.getColumnIndex(COL_STORE_GEO_LONG)), 
       c.getString(c.getColumnIndex(COL_STORE_LEADTIME)), 
       c.getString(c.getColumnIndex(COL_STORE_MD))); 
    db.close(); 
    c.close(); 
    return data; 
} 

das ist mein log:

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.apps.userinarts.mobilemerchpre/com.apps.userinarts.MobileMerchPre.StoresCheckinActivity}: android.database.CursorIndexOutOfBoundsException: Index 0 requested, with a size of 0 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
at android.app.ActivityThread.-wrap11(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:148) 
at android.app.ActivityThread.main(ActivityThread.java:5417) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
Caused by: android.database.CursorIndexOutOfBoundsException: Index 0 requested, with a size of 0 
at android.database.AbstractCursor.checkPosition(AbstractCursor.java:460) 
at android.database.AbstractWindowedCursor.checkPosition(AbstractWindowedCursor.java:136) 
at android.database.AbstractWindowedCursor.getString(AbstractWindowedCursor.java:50) 
at com.apps.userinarts.MobileMerchPre.db.StoreHelper.getStore(StoreHelper.java:130) 
at com.apps.userinarts.MobileMerchPre.StoresCheckinActivity.inCaseOffline(StoresCheckinActivity.java:90) 
at com.apps.userinarts.MobileMerchPre.StoresCheckinActivity.onCreate(StoresCheckinActivity.java:83) 
at android.app.Activity.performCreate(Activity.java:6237) 
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107) 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)  
at android.app.ActivityThread.-wrap11(ActivityThread.java)  
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)  
at android.os.Handler.dispatchMessage(Handler.java:102)  
at android.os.Looper.loop(Looper.java:148)  
at android.app.ActivityThread.main(ActivityThread.java:5417)  
at java.lang.reflect.Method.invoke(Native Method)  
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)  
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)  

Answer 1

sieht aus wie Ihre Abfrage 0 Treffer. Um dies zu überprüfen, ignorieren Sie nicht das Ergebnis moveToFirst(). Es wird wieder falsch, wenn Cursorgröße ist 0.
etwas tun:

if(c.moveToFirst()) { 
    data = new StoreData(
      c.getString(c.getColumnIndex(COL_STORE_ID)), 
      c.getString(c.getColumnIndex(COL_ACCOUNT_ID)), 
      c.getString(c.getColumnIndex(COL_KOTA_ID)), 
      c.getString(c.getColumnIndex(COL_STORE_NAME)), 
      c.getString(c.getColumnIndex(COL_STORE_MANAGER)), 
      c.getString(c.getColumnIndex(COL_STORE_ADDRESS)), 
      c.getString(c.getColumnIndex(COL_STORE_TELEPHONE)), 
      c.getString(c.getColumnIndex(COL_STORE_GEO_LAT)), 
      c.getString(c.getColumnIndex(COL_STORE_GEO_LONG)), 
      c.getString(c.getColumnIndex(COL_STORE_LEADTIME)), 
      c.getString(c.getColumnIndex(COL_STORE_MD))); 
    db.close(); 
    c.close(); 
} 
return data;