Question

我正在开发像Instagram这样的应用程序。我有cellForRowAtIndexPath的代码，每次为解开按钮创建对象并且它是自动释放。这个按钮显示用户名，它可能是1,2,3,4,5，..总和用户一样。因为我创建UIButton取决于喜欢cout。我没有使用ARC。

但是当setColour时它有时会崩溃（不是每个时间）。

我已启用NSZombie并且一直说：

[UIDeviceRGBColor set]：发送到解除分配的实例0x21b526f0的消息

            UIButton *btnLikeUserName = [[[UIButton alloc] init] autorelease];
                [btnLikeUserName.titleLabel setFont:[UIFont boldSystemFontOfSize:12]];

                if (posx + size.width > 280) {
                    posy = posy + 22;
                    posx = 18;
                    btnLikeUserName.frame = CGRectMake(posx,posy,size.width,size.height);
                    posx = posx + size.width + 5;
                }
                else {
                    btnLikeUserName.frame = CGRectMake(posx,posy,size.width,size.height);
                    posx = posx + size.width + 5;
                }
                btnLikeUserName.tag = shareObjU.userId;
                [btnLikeUserName setTitle:text forState:UIControlStateNormal];
                [btnLikeUserName setTitleColor:[UIColor colorWithRed:50/255.0 green:79/255.0 blue:133/255.0 alpha:1.0] forState:UIControlStateNormal]; ////Hear is crash
                [btnLikeUserName addTarget:self action:@selector(btnLikeUserNameClick:) forControlEvents:UIControlEventTouchUpInside];
                [cell.viewLikeComment addSubview:btnLikeUserName];

我也看到以下链接

UISwitch setThumbTintColor causing crash (iOS 6 only)?

1 out of 4 colors return errors

iOS App crashes when using colorWithRed:green:blue:alpha

和其他..但所有人都说全球Objct。不是本地对象。我怎么能解决它。谢谢

Answer 1

试试这段代码......

[btnLikeUserName setTitleColor:[UIColor colorWithRed:((float) 50 / 255.0f)  
                           green:((float) 79 / 255.0f)  
                            blue:((float) 133 / 255.0f)  
                           alpha:1.0f] forState:UIControlStateNormal];

或您也可以将UIColor设置为如下。

[btnLikeUserName setTitleColor:[UIColor colorWithRed:50.0f/255.0f green:79.0f/255.0f blue:133.0f/255.0f alpha:1.0] forState:UIControlStateNormal];

在这里你在每个单元格中添加UIButtons然后尝试定义如下所示，而不是每次都分配和自动释放.....

   UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];

* 更新： *请参阅我在每个单元格中添加的示例，其中包含多个按钮，如GridView

 UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
 button.frame = rect;
 button.tag = imageIndex;
 [button addTarget:self  action:@selector(btnTemp_Clicked:)
                 forControlEvents:UIControlEventTouchDown];

 [button setTitle:[arrTime objectAtIndex:imageIndex] forState:UIControlStateNormal];
 [button.titleLabel setFont:[UIFont fontWithName:@"Helvetica-Bold" size:12]];

 //[button setTitleColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"circle03.jpg"]] forState:UIControlStateNormal ];                
 [button setTitleColor:[UIColor colorWithRed:50.0f/255.0f green:79.0f/255.0f blue:133.0f/255.0f alpha:1.0] forState:UIControlStateHighlighted ];

 [button setNeedsDisplay];

 [gridCell.contentView addSubview:button];

[UIDeviceRGBColor set]：发送给deallocated实例的消息

1 个答案: