僅顯示二進制值的圖像

我通過URL將圖像存儲到數據庫表中。即時通訊使用從URL獲取圖像後。我插入成功。具有URL路徑的圖像。但是，當提取它顯示二進制值<Mydata: 0x71756b0>。這是什麼？僅顯示二進制值的圖像

代碼：

if (sqlite3_open([path UTF8String], &database) == SQLITE_OK) { 

     NSData* data = nil; 

     // UIImage *image = nil; 

     // const char *sql = "SELECT product_image FROM product order by order_by"; 

     const char *sql = "SELECT product_image FROM product"; 

     NSLog(@"sql is %s",sql); 

     sqlite3_stmt *statement; 
     // int catID = 0; 
     if (sqlite3_prepare_v2(database, sql, -1, &statement, NULL) == SQLITE_OK) { 
      // We "step" through the results - once for each row. 
      while (sqlite3_step(statement) == SQLITE_ROW) { 
Mydata *Mylist = [[Mydata alloc]init]; 

       int length = sqlite3_column_bytes(statement, 2); 
       data  = [NSData dataWithBytes:sqlite3_column_blob(statement, 2) length:length]; 
       // UIImage *image = [UIImage imageWithData:data]; 

       Mylist.photo = [[UIImage alloc] initWithData:data]; 

       NSLog(@"my list is %@",Mylist); 

       [mArray addObject:Mylist]; 

} 
     } 
     sqlite3_finalize(statement); 
    } 

    else { 
     sqlite3_close(database); 
     NSAssert1(0, @"Failed to open database with message '%s'.", sqlite3_errmsg(database)); 
     // Additional error handling, as appropriate... 
    } 
}

圖片顯示：

int Width = 0; 

    for (int i = 0; i<[mArray count]; i++) { 


     NSLog(@"index %@", mArray[i]); 



    imgView1=[[UIButton alloc]initWithFrame:CGRectMake(20+(i*74), 0, 72, 72)]; 

     Width = Width + 20+(i*74); 

     [imgView1 setTag:i+1]; 

     [imgView1 addTarget:self action:@selector(Clicked:) forControlEvents:UIControlEventTouchUpInside]; 

     [imgView1 setImage:((Mydata *)[mArray objectAtIndex:i]).photo forState:UIControlStateNormal]; 

     [scrollview addSubview:imgView1]; 

     // [myScroll addSubview:imgView1]; 



    }

來源

2013-08-22 user2674668

你粘貼的代碼中沒有任何叫做「Mydata」的東西。 – Amar

對不起。從這一行檢查編輯的問題Mydata * Mylist = [[Mydata alloc] init]; – user2674668

您正在記錄正確顯示的實例的地址。究竟是什麼問題？ – Amar

就位在DB數據庫存儲圖像，僅存儲URL鏈接。

使用ASyncImageView從URL中獲取圖像。

所以圖像只從服務器獲取一次並在本地存儲。

來源

2013-08-22 12:54:14 Tarang

我只在圖像中存儲了URL鏈接。 – user2674668

僅顯示二進制值的圖像

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