zoukankan      html  css  js  c++  java
  • #在蓝懿学习iOS的日子#第七个练习日

    复习这两天学习的内容

    动画
       //    frame  bounds  alpha  背景颜色  center  transform(转换)
        UIImageView* iv =[[UIImageView alloc]initWithFrame:CGRectMake(100, 100, 100, 100)];
        iv.image = [UIImage imageNamed:@"8.jpg"];
        [self.view addSubview:iv];
        //NO.1旋转渐变animateWithDuration(动画持续时间)
    //    [UIView animateWithDuration:3 animations:^{
    //        iv.center = CGPointMake(300, 300);
    //        iv.alpha = .5;
    //        iv.transform = CGAffineTransformScale(iv.transform, .5, .5);
    //        //旋转
    //        iv.transform =CGAffineTransformRotate(iv.transform, 90.0*M_PI/180);
    //    }];
         //NO.2原地向左旋转  completion完成
    //    [UIView animateWithDuration:3 animations:^{
    //        iv.transform = CGAffineTransformRotate(iv.transform, 90.0*M_PI/180);
    //    } completion:^(BOOL finished) {
    //        [iv removeFromSuperview];
    //    }];
        //NO.3 delay(延迟时间)
        [UIView animateWithDuration:3 delay:3 options:UIViewAnimationOptionCurveEaseIn animations:^{
            iv.center = CGPointMake(300, 300);
        } completion:^(BOOL finished) {
            [iv removeFromSuperview];
        }];
    }
      
        //旋转,左旋

        number++;

        CGAffineTransform rotate = CGAffineTransformMakeRotation(number / 180.0 * M_PI );

        [viewDemo setTransform:rotate];

    }

    如果使用此方法连续点击button就可以显示处一点一点的移动效果

    每次旋转90度的话可以使用一下的代码实现效果

    -(void)testViewDemo

    {

    //旋转,右旋

        number = number+90.0;

        CGAffineTransform rotate = CGAffineTransformMakeRotation(number / 180.0 * M_PI );

        [viewDemo setTransform:rotate];



    UIView实现左旋效果

    //旋转,左旋

        number = number-90.0;

        CGAffineTransform rotate = CGAffineTransformMakeRotation(number / 180.0 * M_PI );

        [viewDemo setTransform:rotate];
       
          
  • 相关阅读:
    水晶苍蝇拍:微薄投资感悟摘录(四) (2012-04-03 14:11:01)
    水晶苍蝇拍:投资感悟(三)(手打,有删减)
    水晶苍蝇拍:投资感悟(二)(2011-12-27 08:17:54)
    leetcode -- String to Integer (atoi)
    leetcode -- Longest Palindromic Substring
    leetcode -- Longest Substring Without Repeating Characters
    leetcode -- Add Two Numbers
    QQ截图工具截取
    LUA学习笔记(第5-6章)
    Lua5.2 请求 luasocket 相关模块时的 multiple-lua-vms-detected
  • 原文地址:https://www.cnblogs.com/odileye/p/4971228.html
Copyright © 2011-2022 走看看