將nsinteger（aka'int'）強制轉換爲nsdictionary在圓弧中不允許使用

Question

-(IBAction)tapOnLikerImage:(UITapGestureRecognizer*)gestureRecognizer { 
    AsyncImageView *likerImageView = (AsyncImageView*)[gestureRecognizer view ]; 
    NSDictionary * likerdetail = [(NSDictionary*)(likerImageView.tag) retain]; 
    NSLog(@"frndDetDict2 %@",[(NSDictionary*)(likerImageView.tag) retain]); 
} 

Answer 1

您正在傳遞一個整數，您應該傳遞Objective C對象指針。您可能想從數組中獲取字典。

另外，您的保留髮布呼叫是不正確的。保留在NSDictionary * likerdetail = [(NSDictionary*)(likerImageView.tag) retain];罰款，保留在NSLog(@"frndDetDict2 %@",[(NSDictionary*)(likerImageView.tag) retain]);不是。

做（非ARC）的更好的方法：

-(IBAction)tapOnLikerImage:(UITapGestureRecognizer*)gestureRecognizer { 
    AsyncImageView *likerImageView = (AsyncImageView*)[gestureRecognizer view]; 

    NSDictionary *likerdetail = [[anArray objectAtIndex:(likerImageView.tag)] retain]; 

    NSLog(@"frndDetDict2 %@", likerdetail); 

    [likerdetail release]; 
} 

對於ARC代碼：

-(IBAction)tapOnLikerImage:(UITapGestureRecognizer*)gestureRecognizer { 
    AsyncImageView *likerImageView = (AsyncImageView*)[gestureRecognizer view]; 

    NSDictionary *likerdetail = [anArray objectAtIndex:(likerImageView.tag)]; 

    NSLog(@"frndDetDict2 %@", likerdetail); 
} 

注缺乏任何保留和釋放的ARC代碼：ARC自動處理這個給你。