android-启动后崩溃

概述我的应用程序正在使用启动服务.在该服务中,我必须从数据库中获取值,但是该应用程序在尝试获取值时崩溃了…logcat错误在下面列出………..01-0322:19:46.097:E/AndroidRuntime(240):FATALEXCEPTION:main01-0322:19:46.097:E/AndroidRuntime(240):java.lang.RuntimeE

我的应用程序正在使用启动服务.在该服务中,我必须从数据库中获取值,但是该应用程序在尝试获取值时崩溃了…

logcat错误在下面列出………..

01-03 22:19:46.097: E/AndroidRuntime(240): FATAL EXCEPTION: main
01-03 22:19:46.097: E/AndroIDRuntime(240): java.lang.RuntimeException: Unable to create service com.androID.antitheft.MyService: java.lang.IllegalStateException: get fIEld slot from row 0 col -1 @R_301_5138@
01-03 22:19:46.097: E/AndroIDRuntime(240): at androID.app.ActivityThread.handleCreateService(ActivityThread.java:2969)
01-03 22:19:46.097: E/AndroIDRuntime(240): at androID.app.ActivityThread.access$3300(ActivityThread.java:125)
01-03 22:19:46.097: E/AndroIDRuntime(240): at androID.app.ActivityThread$H.handleMessage(ActivityThread.java:2087)
01-03 22:19:46.097: E/AndroIDRuntime(240): at androID.os.Handler.dispatchMessage(Handler.java:99)
01-03 22:19:46.097: E/AndroIDRuntime(240): at androID.os.Looper.loop(Looper.java:123)
01-03 22:19:46.097: E/AndroIDRuntime(240): at androID.app.ActivityThread.main(ActivityThread.java:4627)
01-03 22:19:46.097: E/AndroIDRuntime(240): at java.lang.reflect.Method.invokeNative(Native Method)
01-03 22:19:46.097: E/AndroIDRuntime(240): at java.lang.reflect.Method.invoke(Method.java:521)
01-03 22:19:46.097: E/AndroIDRuntime(240): at com.androID.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
01-03 22:19:46.097: E/AndroIDRuntime(240): at com.androID.internal.os.ZygoteInit.main(ZygoteInit.java:626)
01-03 22:19:46.097: E/AndroIDRuntime(240): at dalvik.system.NativeStart.main(Native Method)
01-03 22:19:46.097: E/AndroIDRuntime(240): Caused by: java.lang.IllegalStateException: get fIEld slot from row 0 col -1 @R_301_5138@
01-03 22:19:46.097: E/AndroIDRuntime(240): at androID.database.CursorWindow.getString_native(Native Method)
01-03 22:19:46.097: E/AndroIDRuntime(240): at androID.database.CursorWindow.getString(CursorWindow.java:329)
01-03 22:19:46.097: E/AndroIDRuntime(240): at androID.database.AbstractwindowedCursor.getString(AbstractwindowedCursor.java:49)
01-03 22:19:46.097: E/AndroIDRuntime(240): at com.androID.antitheft.MyService.onCreate(MyService.java:69)
01-03 22:19:46.097: E/AndroIDRuntime(240): at androID.app.ActivityThread.handleCreateService(ActivityThread.java:2959)
01-03 22:19:46.097: E/AndroIDRuntime(240): … 10 more

提前谢谢…………..

我的service.java //文件

package com.androID.antitheft;import androID.app.Service;import androID.content.Context;import androID.content.Intent;import androID.database.Cursor;import androID.database.sqlite.sqliteDatabase;import androID.os.IBinder;import androID.telephony.TelephonyManager;import androID.telephony.SmsManager;import androID.util.Log;import androID.Widget.Toast;public class MyService extends Service {sqliteDatabase myDB;@OverrIDepublic IBinder onBind(Intent arg0) {    // Todo auto-generated method stub    return null;}@OverrIDepublic voID onCreate() {    super.onCreate();    System.out.println("@@@@@@@@@@@OnCreate1111");    Toast.makeText(this, "Service Created", Toast.LENGTH_LONG).show();      myDB = MyService.this.openorCreateDatabase("antitheft", MODE_PRIVATE, null);        Cursor cursor1 = myDB.query("Simserial", null, null, null, null, null, null);     cursor1.movetoLast();        //cursor1.movetoFirst();        String ss1 = cursor1.getString(cursor1.getColumnIndex("simno"));        Toast.makeText(this, "FROM DATABASE: SIM SERIAL "+ss1, Toast.LENGTH_LONG).show();        cursor1.close();        myDB.close();//          cursor2.movetoNext();//          String num2 = cursor2.getString(cursor2.getColumnIndex("secure"));//          //          cursor2.movetoNext();//          String num3 = cursor2.getString(cursor2.getColumnIndex("secure"));          TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);        String ss=tm.getSimserialNumber();        Log.v("SERVICE", ss);        Toast.makeText(this, "Service started : SIM SERIAL "+ss, Toast.LENGTH_LONG).show();        Log.v("StartServiceAtBoot", "StartAtBootService -- onStartCommand()");                  if(ss.equals(ss1))        {            SmsManager sms = SmsManager.getDefault();//              sms.sendTextMessage("5556", null, "message", null, null);            Toast.makeText(this, "INSIDE iffffffffffff ", Toast.LENGTH_LONG).show();             myDB = MyService.this.openorCreateDatabase("antitheft", MODE_PRIVATE, null);            Cursor cursor2 = myDB.query("Simserial", null, null, null, null, null, null);            cursor2.movetoFirst();            while (cursor2.isAfterLast() == false) {                String num1 = cursor2.getString(cursor2.getColumnIndex("secure"));                sms.sendTextMessage(num1, null, "message", null, null);                cursor2.movetoNext();            }            cursor2.close();            myDB.close();//              sms.sendTextMessage(num1, null, "message", null, null);  //              sms.sendTextMessage(num2, null, "message", null, null);//              sms.sendTextMessage(num3, null, "message", null, null);            }//          else//              //          {//              SmsManager sms = SmsManager.getDefault();//              sms.sendTextMessage("5556", null, "message", null, null);//              //              Toast.makeText(this, "INSIDE elseeeeeeeeeeeeee", Toast.LENGTH_LONG).show();//          }}@OverrIDepublic voID onDestroy() {    super.onDestroy();    Toast.makeText(this, "Service Destroyed", Toast.LENGTH_LONG).show();} @OverrIDe    public int onStartCommand(Intent intent, int flags, int startID)     {        // We want this service to continue running until it is explicitly        // stopped, so return sticky.        return START_STICKY;    }

}

解决方法:

从数据库创建游标时,必须首先检查两者(游标！= null&& cursor.movetoFirst()).在您的情况下,如果没有任何可用数据,则将产生问题.

所以在使用游标之前,请先添加条件

if(c != null && c.movetoFirst()) {//write your code here} 

java.lang.IllegalStateException: get fIEld slot from row 0 col -1
@R_301_5138@

通常,如果您试图从游标中读取列值,但该列在游标中不存在,则会出现此错误.

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