iPhone應用程序中的內存問題

Question

請幫助，我真的在內存泄漏問題上苦苦掙扎。這裏是我的代碼

+ (void) getInitialDataToDisplay:(NSString *)dbPath { 

    AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate]; 
    [appDelegate.itemArray removeAllObjects]; //0.8% 
    if (sqlite3_open([dbPath UTF8String], &dataBase) == SQLITE_OK) //18.9% 
    { 
     NSString *sqlStr = @"select * from ItemTable order by Status_id asc, ReleaseDate desc"; 
     const char *sql = [sqlStr UTF8String]; 
     sqlite3_stmt *selectstmt; 
     if(sqlite3_prepare_v2(dataBase, sql, -1, &selectstmt, NULL) == SQLITE_OK) { //25% 
      while(sqlite3_step(selectstmt) == SQLITE_ROW) { //46.3 
       NSInteger primaryKey = sqlite3_column_int(selectstmt, 0); 
       DataBaseClass *itemObj = [[DataBaseClass alloc] initWithPrimaryKey:primaryKey]; // 2.6% 

       itemObj.itemID = sqlite3_column_int(selectstmt, 0); 
       itemObj.itemName = ((char *)sqlite3_column_text(selectstmt,1)) ? [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 1)] : nil; 
       itemObj.availableIcon = ((char *)sqlite3_column_text(selectstmt,2)) ? [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 2)] : nil; 
       itemObj.notAvialableIcon = ((char *)sqlite3_column_text(selectstmt,3)) ? [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt,3)] : nil; 
       itemObj.itemReleaseDate = ((char *)sqlite3_column_text(selectstmt, 4)) ? [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 4)] : nil; 
       itemObj.itemStatus = ((char *)sqlite3_column_text(selectstmt,5)) ? [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 5)] : nil; 
       itemObj.itemModDate = ((char *)sqlite3_column_text(selectstmt,6)) ? [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 6)] : nil; 
       itemObj.status_id = sqlite3_column_int(selectstmt, 7); 
       itemObj.availableLocalIconPath = ((char *)sqlite3_column_text(selectstmt,8)) ? [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 8)] : nil; 
       itemObj.notAvialableLocalIconPath = ((char *)sqlite3_column_text(selectstmt,9)) ? [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 9)] : nil; 

       [appDelegate.itemArray addObject:itemObj]; 
      } 
     } 
     sqlite3_finalize(selectstmt); 
    } 
    else 
     sqlite3_close(dataBase); //Even though the open call failed, close the database connection to release all the memory. 
} 

我在這段代碼中的某些行得到內存泄漏。不知道如何解決這個問題。我在我的應用程序中使用ARC。我使用XCode中的儀器工具在殭屍啓用模式下追蹤了這一點。而且我還提到了一些行中泄漏的百分比。請檢查代碼和幫助。

Answer 1

如果你成功了，sqlite3_finalize被調用，但你永遠不會關閉你的數據庫。既然你用這種方法打開它，你也應該在這裏關閉它。刪除最後的'其他'，看看會發生什麼。