由於未捕獲的異常'NSInvalidArgumentException'，原因：' - [UIImage length]：無法識別的選擇器發送到實例

Question

我終於嘗試從NSMutableArray中的表視圖單元格圖像視圖中加載圖像。但我得到警告 由於未捕獲異常'NSInvalidArgumentException'而終止應用程序，原因：' - [UIImage length]：無法識別的選擇器已發送到實例。

我嘗試了很多解決方案張貼在這個網站。但它不適合我。

這是我的代碼：

recipe1.numbers1=[[NSMutableArray alloc] initWithObjects: 
             [UIImage imageNamed:@"1.png"], 
             [UIImage imageNamed:@"2.png"], 
             [UIImage imageNamed:@"3.png"], 
             [UIImage imageNamed:@"4.png"], 
             [UIImage imageNamed:@"5.png"], 
             [UIImage imageNamed:@"6.png"], 
             [UIImage imageNamed:@"7.png"], 
             [UIImage imageNamed:@"8.png"],                                              
             [UIImage imageNamed:@"9.png"], 
             [UIImage imageNamed:@"10.png"], nil]; 

這是我如何訪問這些圖片：

cell1.numbersImageview1.image = [UIImage imageNamed:[recipe.numbers1 objectAtIndex:indexPath.row]]; 

Answer 1

錯誤是你從數組訪問圖像的方式，你已經存儲了一個UIImage對象有，沒有必要（且是誤差）來調用imageNamed:，行更改爲：

cell1.numbersImageview1.image = [recipe.numbers1 objectAtIndex:indexPath.row]; 

編輯

在你的代碼添加的訪問陣列作爲另一個對象的元素，嘗試改變整個代碼這樣：

recipe1.numbers1=[[NSMutableArray alloc] initWithObjects: 
        [UIImage imageNamed:@"1.png"], [UIImage imageNamed:@"2.png"], 
        [UIImage imageNamed:@"3.png"], [UIImage imageNamed:@"4.png"], 
        [UIImage imageNamed:@"5.png"], [UIImage imageNamed:@"6.png"], 
        [UIImage imageNamed:@"7.png"], [UIImage imageNamed:@"8.png"], 
        [UIImage imageNamed:@"9.png"], [UIImage imageNamed:@"10.png"], nil]; 


cell1.numbersImageview1.image = [recipe.numbers1 objectAtIndex:indexPath.row]; 

Answer 2

你做錯了變化這條線：

cell1.numbersImageview1.image = [UIImage imageNamed:[recipe.numbers1 objectAtIndex:indexPath.row]];nil]; 

TO

cell1.numbersImageview1.image = [recipe1.numbers1 objectAtIndex:indexPath.row]; 

Answer 3

you try this one also once. 

- (void)viewDidLoad 
{ 
    recipe1.numbers1=[[NSMutableArray alloc] initWithObjects:@"1.png",@"2.png",@"3.png",@"4.png",@"5.png",@"6.png",@"7.png",@"8.png",@"9.png",@"10.png"]; 
} 



-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 

{ 
     .................... 
     .................... 

NSString *imagename=[recipe1.numbers1 objectAtIndexPath:indexPath.row]; 
cell1.numbersImageview1.image =[UIImage imageNamed:imagename]; 
}