IOS视图旋转可放大缩小

- (IBAction)hideBut:(id)sender {

    if (self.flg) {
        
        [UIView animateWithDuration:0.3 animations:^{
            self.meunBaseLayer.transform = CGAffineTransformRotate(self.meunBaseLayer.transform , 3.14);
            // 缩放是按比例缩放
             self.meunBaseLayer.transform = CGAffineTransformScale( self.meunBaseLayer.transform, 0.5, 0.5);
        }];
        self.flg = NO;
    }else{
        [UIView animateWithDuration:0.3 animations:^{
            self.meunBaseLayer.transform = CGAffineTransformRotate(self.meunBaseLayer.transform , -3.14);
            self.meunBaseLayer.transform = CGAffineTransformScale( self.meunBaseLayer.transform, 2, 2);
        }];
        self.flg = YES;
    }
 
}