新浪微博样式的ActionSheet

jopen 8年前

新浪微博样式的ActionSheet

实现此功能的关键是在view里面生成一个UIWindow(该window会自动被加入到已有的window上面),然后设置windowlevel和hidden属性就可以显示或者隐藏。

//懒加载window,新建window之后会被自动添加到已有window上,只要设置windowLevel和hidden属性即可显示  -(UIWindow *)actionWindow{        if (!_actionWindow) {          _actionWindow = [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];          _actionWindow.windowLevel = UIWindowLevelAlert;          _actionWindow.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:.3];      }      return _actionWindow;  }    //显示  -(void)show{      //设置self初始位置      self.frame = CGRectMake(0, ZDHEIGHT, ZDWIDTH, ZDHEIGHT);        //添加本身到新建window      [self.actionWindow addSubview:self];        self.actionWindow.hidden = NO;      [UIView animateWithDuration:ZDANIMATIONTIME animations:^{          self.frame = CGRectMake(0, 0, ZDWIDTH, ZDHEIGHT);      }];  }    -(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{        [self dismissFromeSuperView];    }    //移除  -(void)dismissFromeSuperView {        [UIView animateWithDuration:ZDANIMATIONTIME animations:^{          self.frame = CGRectMake(0, ZDHEIGHT, ZDWIDTH, ZDHEIGHT);        } completion:^(BOOL finished) {            [self removeFromSuperview];          self.actionWindow.hidden = YES;          self.actionWindow = nil;        }];  }

项目地址: https://github.com/newbbydong/SinaWeiboActionSheet