如何动态设置UITabBarItem下的行

Question

这里我想在tabBarItem下面显示一行，如下图所示，我将按照以下方式设置它。然而问题是它是静态的，如果我使用更大的屏幕尺寸，如iPhone 6加上paintView2移动，看起来很难看。那么，如何为所有屏幕尺寸动态设置CGRectMake视图坐标。已经尝试过许多方法，但无法实现我想要的目标。

    paintView2=[[UIView alloc]initWithFrame:CGRectMake(105,662,70, 5)];


    NSLog(@"position:%f",paintView2.frame.origin.x);

    CAGradientLayer *gradient = [CAGradientLayer layer];

    gradient.colors = [NSArray arrayWithObjects:(id)[self colorWithHexString:@"34A9C4"].CGColor,(id)[self colorWithHexString:@"36AC60"].CGColor, nil];
    gradient.frame = paintView2.bounds ;
    [paintView2.layer insertSublayer:gradient atIndex:0];

    [self.view addSubview:paintView2];

Answer 1

在分配视图并给出框架时，您需要使其像

一样动态化

CGRect screen = [[UIScreen mainScreen] bounds];
CGFloat ScreenWidth = CGRectGetWidth(screen);
CGFloat ScreenHeight = CGRectGetHeight(screen);

paintView2=[[UIView alloc]initWithFrame:CGRectMake((ScreenWidth/4)*i,ScreenHeight - 5, ScreenWidth/4, 5)];