CATextLayer *layer = [[CATextLayer alloc] init];
layer.frame = CGRectMake(0, 300, 100, 100);
字体模糊
layer.contentsScale = 10;
字体
layer.font = (__bridge CFTypeRef)(@"HiraKakuProN-W3");
对其模式
layer.alignmentMode = kCAAlignmentLeft;
字体大小
layer.fontSize= 30;
自动换行
layer.wrapped = YES;
显示的文字
layer.string = @" zhao zhong peng ";
背景色
layer.backgroundColor = [UIColor cyanColor].CGColor;
文字的颜色
layer.foregroundColor = [UIColor greenColor].CGColor;
[self.view.layer addSublayer:layer];