我的Android应用程序一直给我一个漏洞发现错误

Question

我正在开发一个Android应用程序，但是我不断地发现一个发现错误的漏洞。这是呼叫堆栈：

11-01 11:26:47.087: ERROR/Database(7317): Leak found
11-01 11:26:47.087: ERROR/Database(7317): java.lang.IllegalStateException: /data/data/com.noshufou.android.su/databases/permissions.sqlite SQLiteDatabase created and never closed
11-01 11:26:47.087: ERROR/Database(7317):     at android.database.sqlite.SQLiteDatabase.<init>(SQLiteDatabase.java:1792)
11-01 11:26:47.087: ERROR/Database(7317):     at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:798)
11-01 11:26:47.087: ERROR/Database(7317):     at android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:857)
11-01 11:26:47.087: ERROR/Database(7317):     at android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:850)
11-01 11:26:47.087: ERROR/Database(7317):     at android.app.ApplicationContext.openOrCreateDatabase(ApplicationContext.java:535)
11-01 11:26:47.087: ERROR/Database(7317):     at android.content.ContextWrapper.openOrCreateDatabase(ContextWrapper.java:193)
11-01 11:26:47.087: ERROR/Database(7317):     at android.content.ContextWrapper.openOrCreateDatabase(ContextWrapper.java:193)
11-01 11:26:47.087: ERROR/Database(7317):     at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:98)
11-01 11:26:47.087: ERROR/Database(7317):     at com.noshufou.android.su.DBHelper.<init>(DBHelper.java:28)
11-01 11:26:47.087: ERROR/Database(7317):     at com.noshufou.android.su.UninstallReceiver.onReceive(UninstallReceiver.java:10)
11-01 11:26:47.087: ERROR/Database(7317):     at android.app.ActivityThread.handleReceiver(ActivityThread.java:2637)
11-01 11:26:47.087: ERROR/Database(7317):     at android.app.ActivityThread.access$3100(ActivityThread.java:119)
11-01 11:26:47.087: ERROR/Database(7317):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1913)
11-01 11:26:47.087: ERROR/Database(7317):     at android.os.Handler.dispatchMessage(Handler.java:99)
11-01 11:26:47.087: ERROR/Database(7317):     at android.os.Looper.loop(Looper.java:123)
11-01 11:26:47.087: ERROR/Database(7317):     at android.app.ActivityThread.main(ActivityThread.java:4363)
11-01 11:26:47.087: ERROR/Database(7317):     at java.lang.reflect.Method.invokeNative(Native Method)
11-01 11:26:47.087: ERROR/Database(7317):     at java.lang.reflect.Method.invoke(Method.java:521)
11-01 11:26:47.087: ERROR/Database(7317):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:862)
11-01 11:26:47.087: ERROR/Database(7317):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:620)
11-01 11:26:47.087: ERROR/Database(7317):     at dalvik.system.NativeStart.main(Native Method)

问题是我在代码中的任何地方都不使用数据库。

编辑：

下面是整个程序的代码片段。而且，有时我只会收到这个错误，有时我不会，这是另一件奇怪的事情。

以下是主要活动：

public class SetAlarmUI extends Activity {
TextView mTimeDisplay;
Button setAlarmButton;

private Calendar time;
private int alarmHour;
private int alarmMin;

static final int TIME_DIALOG_ID = 0;
Toast toast;

@Override
/** Called when the activity is first created. */
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.setalarm);

    // Holder for the Time, user will set this value later
    time = Calendar.getInstance();
    // Show the selected time
    mTimeDisplay = (TextView) findViewById( R.id.timeText );        
    // Allow user to select the time for alarm and set it
    setAlarmButton = (Button) findViewById( R.id.pickTime );

    /***************** LISTENERS ******************/

    // add a click listener to the Set Time button
    OnClickListener setTimeListener = new OnClickListener() {
        // Do this when the Set-Time button is clicked;             
        public void onClick(View v) {
            // Display the Time Selector Dialog box so DEVELOPER can set the alarm
            /** This will later be changed so that time is retrieved from a server */
            showDialog( TIME_DIALOG_ID );  // TIME_DIALOG_ID = a unique ID for the Time Picker Dialog
        }
    };
    Log.e( "OUT", "Line 59: Continuing..." );

    //--------- Assign The Listeners ----------//
    setAlarmButton.setOnClickListener( setTimeListener );

    /**********************************************/

    // get the current time
    time.setTimeInMillis( System.currentTimeMillis() );
    alarmHour = time.get( Calendar.HOUR_OF_DAY);
    alarmMin = time.get( Calendar.MINUTE );

    // Update the current display
    updateDisplay();             
}


// updates the time we display in the TextView
private void updateDisplay() {
    mTimeDisplay.setText(
        new StringBuilder()
                .append(pad(alarmHour)).append(":")
                .append(pad(alarmMin)));
}
// Fix up the string representation of the time
private static String pad(int c) {
    if (c >= 10)
        return String.valueOf(c);
    else
        return "0" + String.valueOf(c);
}

// the callback received when the user "sets" the time in the dialog
private TimePickerDialog.OnTimeSetListener mTimeSetListener =
    new TimePickerDialog.OnTimeSetListener() {
        public void onTimeSet(TimePicker view, int hourOfDay, int minute) {

            time.set( Calendar.HOUR_OF_DAY, hourOfDay );
            time.set( Calendar.MINUTE, minute );

            // Tell user alarm was set
            String timeSetTo = "Alarm Set: " + time.get( Calendar.HOUR_OF_DAY ) + ":" + time.get( Calendar.MINUTE ) + " " + time.get( Calendar.AM_PM );
            if( toast != null ) 
                toast.cancel();

            toast = Toast.makeText( SetAlarmUI.this, "L" + timeSetTo, Toast.LENGTH_LONG );
            toast.show();               

            // When the alarms goes off we want to send an Intent to our Broadcast Receiver (AlarmAction), 
            // so set an Intent between the AlarmUI and the AlarmAction
            Intent intent = new Intent( SetAlarmUI.this, CallAlarm.class );

            // Create an IntentSender to have the intent executed as a broadcast later when alarm goes off.
            PendingIntent sender = PendingIntent.getBroadcast( SetAlarmUI.this, 0, intent, 0 );

            /** Schedule the alarm */
            // To get any service we use getSystemService( Service Name )
            AlarmManager alarmManager = ( AlarmManager ) getSystemService( ALARM_SERVICE );
            /* Finally, we set the alarm to the desired time! WOOHOO! */
            alarmManager.set( AlarmManager.RTC_WAKEUP, time.getTimeInMillis(), sender );
        }
    };

@Override
protected Dialog onCreateDialog(int id) {
    switch (id) {
        case TIME_DIALOG_ID:
            return new TimePickerDialog(this,
                    mTimeSetListener, alarmHour, alarmMin, false);
    }
    return null;
}
}

这是我的广播接收器：

public class CallAlarm extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent callDismiss)
{
    Toast.makeText( context, R.string.debug, Toast.LENGTH_LONG ).show();
    Log.e( "AlarmAction", context.getResources().getStringArray( R.array.ahadith )[0] );

    callDismiss = new Intent( context, DismissUI.class );
    context.startActivity( callDismiss );
}
}

最后，这里是我的第二个活动，当警报响起时，广播接收器会呼叫我：

public class DismissUI extends Activity {

@Override
/** Called when the activity is first created. */
public void onCreate( Bundle savedInstanceState ) {
    // Display the Hadith
    //super.onCreate( savedInstanceState );
    setContentView( R.layout.dismiss );

    Log.e( "DismissUI", "MADE IT TO THE DISMISS!" );    /* DEBUG */

    // Get the Activity's Layout
    LinearLayout mLayout = ( LinearLayout ) findViewById( R.layout.dismiss );
    // Get a hadith from the String xml file and display it
    TextView textView = new TextView( this );
    textView.setText( getResources().getTextArray( R.array.ahadith )[0] );
    // Set the layout for the Text (hadith)
    LayoutParams p = new LayoutParams( LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT );    
    textView.setLayoutParams(p);
    // Add the hadith text to the layout at the beginning hence the ZERO
    mLayout.addView( textView, 0 );
    // Get the Text box for user input
    EditText textBox = ( EditText ) findViewById( R.id.userInput );
    // Get the Snooze and Dismiss buttons

    // Set listener for Snooze button
    // Set listener for Dismiss Button

}
}

Answer 1

让我猜猜-你用的是带有自定义ROM的根手机。最有可能是CyanogenMod？您可能使用的是一个buggy版本。参见这里的问题：http://code.google.com/p/cyanogenmod/issues/detail?id=1512

它基本上来自管理超级用户状态并允许应用程序成为超级用户的应用程序。它似乎没有正确地维护其数据库。

Answer 2

问题是，我代码中的任何地方都不使用数据库。

毫无疑问，您确实使用了SQLite。调用堆栈的第二行和第三行是SQlite正在初始化的明确证据。也许您正在使用一些使用SQlite的库。

如果您包含了更多的信息(包括完整的堆栈跟踪)，那么可能更容易知道发生了什么。