更新SQLite數據庫導致錯誤

我是Android新手，正在開發一款應用程序，它應該從相機中檢索數據並將其存儲到SQlite數據庫中。不幸的是，數據庫更新不起作用，所以任何提示或意見，將不勝感激。更新SQLite數據庫導致錯誤

下面是代碼：

package de.die_web_agenten.www.runinstant; 

import android.app.Activity; 
import android.app.AlertDialog; 
import android.content.ActivityNotFoundException; 
import android.content.ContentValues; 
import android.content.DialogInterface; 
import android.content.Intent; 
import android.database.Cursor; 
import android.database.sqlite.SQLiteDatabase; 
import android.net.Uri; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.widget.ListAdapter; 
import android.widget.SimpleCursorAdapter; 

import de.die_web_agenten.www.runinstant.db.TaskContract; 
import de.die_web_agenten.www.runinstant.db.TaskDBHelper; 


public class AndroidBarcodeQrExample extends Activity { 
    /** Called when the activity is first created. */ 

    static final String ACTION_SCAN = "com.google.zxing.client.android.SCAN"; 
    private ListAdapter listAdapter; 
    private TaskDBHelper helper; 


    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_barcode); 
    } 

    public void scanBar(View v) { 
     try { 
      Intent intent = new Intent(ACTION_SCAN); 
      intent.putExtra("SCAN_MODE", "PRODUCT_MODE"); 
      startActivityForResult(intent, 0); 
     } catch (ActivityNotFoundException anfe) { 
      showDialog(AndroidBarcodeQrExample.this, "No Scanner Found", "Download a scanner code activity?", "Yes", "No").show(); 
     } 
    } 

    public void scanQR(View v) { 
     try { 
      Intent intent = new Intent(ACTION_SCAN); 
      intent.putExtra("SCAN_MODE", "QR_CODE_MODE"); 
      startActivityForResult(intent, 0); 
     } catch (ActivityNotFoundException anfe) { 
      showDialog(AndroidBarcodeQrExample.this, "No Scanner Found", "Download a scanner code activity?", "Yes", "No").show(); 
     } 
    } 

    private static AlertDialog showDialog(final Activity act, CharSequence title, CharSequence message, CharSequence buttonYes, CharSequence buttonNo) { 
     AlertDialog.Builder downloadDialog = new AlertDialog.Builder(act); 
     downloadDialog.setTitle(title); 
     downloadDialog.setMessage(message); 
     downloadDialog.setPositiveButton(buttonYes, new DialogInterface.OnClickListener() { 
      public void onClick(DialogInterface dialogInterface, int i) { 
       Uri uri = Uri.parse("market://search?q=pname:" + "com.google.zxing.client.android"); 
       Intent intent = new Intent(Intent.ACTION_VIEW, uri); 
       try { 
        act.startActivity(intent); 
       } catch (ActivityNotFoundException anfe) { 

       } 
      } 
     }); 
     downloadDialog.setNegativeButton(buttonNo, new DialogInterface.OnClickListener() { 
      public void onClick(DialogInterface dialogInterface, int i) { 
      } 
     }); 
     return downloadDialog.show(); 
    } 

    private void updateUI() { 
     helper = new TaskDBHelper(AndroidBarcodeQrExample.this); 
     SQLiteDatabase sqlDB = helper.getReadableDatabase(); 
     Cursor cursor = sqlDB.query(TaskContract.TABLE, 
       new String[]{ TaskContract.Columns.SCAN_RESULT, TaskContract.Columns.SCAN_RESULT_FORMAT,TaskContract.Columns._id, 
         TaskContract.Columns.DATE}, 
       null, null, null, null, null 
     ); 


     listAdapter = new SimpleCursorAdapter(
       this, 
       R.layout.task_view, 
       cursor, 
       new String[]{TaskContract.Columns.SCAN_RESULT_FORMAT, TaskContract.Columns.SCAN_RESULT, TaskContract.Columns._id}, 
       new int[]{R.id.taskTextView}, 
       0 
     ); 

     this.setListAdapter(listAdapter); 

    } 

    public void onActivityResult(int requestCode, int resultCode, Intent intent) { 
     if (requestCode == 0) { 
      if (resultCode == RESULT_OK) { 
       String contents = intent.getStringExtra("SCAN_RESULT"); 
       String format = intent.getStringExtra("SCAN_RESULT_FORMAT"); 
       helper = new TaskDBHelper(AndroidBarcodeQrExample.this); 
       SQLiteDatabase db = helper.getWritableDatabase(); 
       ContentValues values = new ContentValues(); 
       //values.clear(); 
       values.put(TaskContract.Columns.SCAN_RESULT, contents); 
       values.put(TaskContract.Columns.SCAN_RESULT_FORMAT, format); 
       db.insertWithOnConflict(TaskContract.TABLE, null, values, SQLiteDatabase.CONFLICT_IGNORE); 
       //Toast toast = Toast.makeText(this, "Content:" + contents + " Format:" + format, Toast.LENGTH_LONG); 
       //toast.show(); 
       /*Intent SecondIntent = new Intent(AndroidBarcodeQrExample.this, SecondListActivity.class); 
       SecondIntent.putExtra("SCAN_RESULT", contents); 
       startActivity(SecondIntent);*/ 
       //Intent SecondIntent = new Intent(getBaseContext(), SecondListActivity.class); 
       //intent.putExtra("SCAN_RESULT", contents); 
       //intent.putExtra("SCAN_RESULT_FORMAT", format); 
       //Intent i = new Intent(this, SecondListActivity.class); 
       //startActivityForResult(i, 1); 
       //startActivity(SecondIntent); 
       Log.d("ADebugTag", "Value: " + (contents)); 
       Log.d("BDebugTag", "Value: " + (format)); 
       //updateUI(); 

      //Context context = getApplicationContext(); 
      //CharSequence text = "Informationen erfolgreich gespeichert!"; 
      //int duration = Toast.LENGTH_SHORT; 
      //Toast toast = Toast.makeText(context, text, duration); 
      } 

     } 

    } 

    public void setListAdapter(ListAdapter listAdapter) { 
     this.listAdapter = listAdapter; 
    } 

}

Here's的TaskDBHelper類：

package de.die_web_agenten.www.runinstant.db; 

import android.content.Context; 
import android.database.sqlite.SQLiteDatabase; 
import android.database.sqlite.SQLiteOpenHelper; 
import android.util.Log; 


public class TaskDBHelper extends SQLiteOpenHelper { 

    public TaskDBHelper(Context context) { 
     super(context, TaskContract.DB_NAME, null, TaskContract.DB_VERSION); 
    } 

    @Override 
    public void onCreate(SQLiteDatabase sqlDB) { 
     String sqlQuery = 
       String.format("CREATE TABLE %s (" + 
         "_id INTEGER PRIMARY KEY AUTOINCREMENT, " + "%s TEXT, %s TEXT)", 
            TaskContract.TABLE, 
            TaskContract.Columns.SCAN_RESULT, 
            TaskContract.Columns.SCAN_RESULT_FORMAT 
            ); 
     Log.d("TaskDBHelper", "Query to form table: " + sqlQuery); 
     sqlDB.execSQL(sqlQuery); 
    } 

    @Override 
    public void onUpgrade(SQLiteDatabase sqlDB, int i, int i2) { 
     sqlDB.execSQL("DROP TABLE IF EXISTS "+TaskContract.TABLE); 
     onCreate(sqlDB); 
    } 
}

Here's的TaskContract類：

package de.die_web_agenten.www.runinstant.db; 

    public class TaskContract { 
     public static final String DB_NAME = "de.die_web_agenten.www.runinstant"; 
     public static final int DB_VERSION = 1; 
     public static final String TABLE = "VALUES"; 


     public static class Columns { 
      public static final String SCAN_RESULT = "SCAN_RESULT"; 
      public static final String SCAN_RESULT_FORMAT = "SCAN_RESULT_FORMAT"; 
      //public static final String DATE = "date"; 
      public static final String _id = "_id"; 
     } 
    } 

Here´s the TaskDBHelper class: 

package de.die_web_agenten.www.runinstant.db; 

import android.content.Context; 
import android.database.sqlite.SQLiteDatabase; 
import android.database.sqlite.SQLiteOpenHelper; 
import android.util.Log; 


public class TaskDBHelper extends SQLiteOpenHelper { 

    public TaskDBHelper(Context context) { 
     super(context, TaskContract.DB_NAME, null, TaskContract.DB_VERSION); 
    } 

    @Override 
    public void onCreate(SQLiteDatabase sqlDB) { 
     String sqlQuery = 
       String.format("CREATE TABLE %s (" + 
         "_id INTEGER PRIMARY KEY AUTOINCREMENT, " + "%s TEXT, %s TEXT)", 
            TaskContract.TABLE, 
            TaskContract.Columns.SCAN_RESULT, 
            TaskContract.Columns.SCAN_RESULT_FORMAT 
            ); 
     Log.d("TaskDBHelper", "Query to form table: " + sqlQuery); 
     sqlDB.execSQL(sqlQuery); 
    } 

    @Override 
    public void onUpgrade(SQLiteDatabase sqlDB, int i, int i2) { 
     sqlDB.execSQL("DROP TABLE IF EXISTS "+TaskContract.TABLE); 
     onCreate(sqlDB); 
    } 
}

Here's的logcat的：

08-15 16:55:12.356 15118-15118/? E/AndroidRuntime: FATAL EXCEPTION: main 
                Process: de.die_web_agenten.www.runinstant, PID: 15118 
                java.lang.RuntimeException: Unable to resume activity {de.die_web_agenten.www.runinstant/de.die_web_agenten.www.runinstant.AndroidBarcodeQrExample}: java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=0, result=-1, data=Intent { act=com.google.zxing.client.android.SCAN flg=0x80000 (has extras) }} to activity {de.die_web_agenten.www.runinstant/de.die_web_agenten.www.runinstant.AndroidBarcodeQrExample}: android.database.sqlite.SQLiteException: near "VALUES": syntax error (code 1): , while compiling: CREATE TABLE VALUES (_id INTEGER PRIMARY KEY AUTOINCREMENT, SCAN_RESULT TEXT, SCAN_RESULT_FORMAT TEXT) 
                ################################################################# 
                Error Code : 1 (SQLITE_ERROR) 
                Caused By : SQL(query) error or missing database. 
                (near "VALUES": syntax error (code 1): , while compiling: CREATE TABLE VALUES (_id INTEGER PRIMARY KEY AUTOINCREMENT, SCAN_RESULT TEXT, SCAN_RESULT_FORMAT TEXT)) 
                ################################################################# 
                 at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3409) 
                 at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3440) 
                 at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2774) 
                 at android.app.ActivityThread.access$900(ActivityThread.java:177) 
                 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1430) 
                 at android.os.Handler.dispatchMessage(Handler.java:102) 
                 at android.os.Looper.loop(Looper.java:135) 
                 at android.app.ActivityThread.main(ActivityThread.java:5910) 
                 at java.lang.reflect.Method.invoke(Native Method) 
                 at java.lang.reflect.Method.invoke(Method.java:372) 
                 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1405) 
                 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1200) 
                Caused by: java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=0, result=-1, data=Intent { act=com.google.zxing.client.android.SCAN flg=0x80000 (has extras) }} to activity {de.die_web_agenten.www.runinstant/de.die_web_agenten.www.runinstant.AndroidBarcodeQrExample}: android.database.sqlite.SQLiteException: near "VALUES": syntax error (code 1): , while compiling: CREATE TABLE VALUES (_id INTEGER PRIMARY KEY AUTOINCREMENT, SCAN_RESULT TEXT, SCAN_RESULT_FORMAT TEXT) 
                ################################################################# 
                Error Code : 1 (SQLITE_ERROR) 
                Caused By : SQL(query) error or missing database. 
                (near "VALUES": syntax error (code 1): , while compiling: CREATE TABLE VALUES (_id INTEGER PRIMARY KEY AUTOINCREMENT, SCAN_RESULT TEXT, SCAN_RESULT_FORMAT TEXT)) 
                ################################################################# 
                 at android.app.ActivityThread.deliverResults(ActivityThread.java:4005) 
                 at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3395) 
                 ... 11 more 
                Caused by: android.database.sqlite.SQLiteException: near "VALUES": syntax error (code 1): , while compiling: CREATE TABLE VALUES (_id INTEGER PRIMARY KEY AUTOINCREMENT, SCAN_RESULT TEXT, SCAN_RESULT_FORMAT TEXT) 
                ################################################################# 
                Error Code : 1 (SQLITE_ERROR) 
                Caused By : SQL(query) error or missing database. 
                (near "VALUES": syntax error (code 1): , while compiling: CREATE TABLE VALUES (_id INTEGER PRIMARY KEY AUTOINCREMENT, SCAN_RESULT TEXT, SCAN_RESULT_FORMAT TEXT)) 
                ################################################################# 
                 at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method) 
                 at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:1093) 
                 at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:670) 
                 at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588) 
                 at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:59) 
                 at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31) 
                at android.database.sqlite.SQLiteDatabase.executeSql(SQLiteDatabase.

任何幫助，將不勝感激，謝謝

來源

2016-08-15 Die Web Agenten

錯誤異常非常豐富;問題在於你的onResume方法; – Eenvincible

錯誤出現在您的'TaskDBHelper'中，您需要發佈該代碼。謝謝！ – TR4Android

此外，現在，我們擴展了AppCompatActivity，而不是普通的Activity類 – Eenvincible

誤差ocurrs由於預期佔位符String S的數量不匹配給定的格式String S的數量：

以下String應該被格式化（預計6 String s到在佔位符填寫）：

"CREATE TABLE %s (_id INTEGER PRIMARY KEY AUTOINCREMENT, %s TEXT, %s TEXT, %s TEXT, %s TEXT, %s TEXT)"

你給它3個String S：

TaskContract.TABLE, TaskContract.Columns.SCAN_RESULT, TaskContract.Columns.SCAN_RESULT_FORMAT

可能你只需要將String.format()方法所需的列名傳遞給你，你應該很好。

來源

2016-08-15 12:26:57 TR4Android

好的，到目前爲止感謝。現在我相應地更新了TaskDBHelper類，而且我仍然得到相同的錯誤。任何更多的提示，將不勝感激，謝謝。 –

請在你的問題中更新你的TaskDBHelper類。謝謝。 – TR4Android

字符串sqlQuery = 字符串。格式（「CREATE TABLE％S（」 + 「_id INTEGER PRIMARY KEY AUTOINCREMENT，」 + 「％s的文字，％S TEXT，％S TEXT）」， TaskContract.TABLE， TaskContract.Columns.SCAN_RESULT， TaskContract .Columns.SCAN_RESULT_FORMAT ）; 這是我更新的部分，也是在@ TR4Android的問題 - 它是正確的嗎？ –

這是有問題的部分：需要2個參數。你有5個佔位符，其中3充滿...

String sqlQuery = 
      String.format("CREATE TABLE %s (" + 
       "_id INTEGER PRIMARY KEY AUTOINCREMENT, " + 
       "%s TEXT, %s TEXT, %s TEXT, %s TEXT, %s TEXT)", 
       TaskContract.TABLE, 
       TaskContract.Columns.SCAN_RESULT, 
       TaskContract.Columns.SCAN_RESULT_FORMAT 
       // 2 more to go!! 
      );

另外注意：使用字符串操作一般不會創建SQL查詢的推薦方式，即使在此碼，輸入似乎來自內部應用程序。

來源

2016-08-15 12:25:55 ppeterka

好的，謝謝你。現在我相應地更新了TaskDBHelper類，而且我仍然得到相同的錯誤。任何更多的提示，將不勝感激，謝謝。 –

@ DWA2112請使用更改後的零件添加更新。錯誤信息是否完全相同 - 即它是否抱怨同一行？ – ppeterka

更新SQLite數據庫導致錯誤

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