ios – Path 2.0菜单动画xcode

发布时间：2020-12-14 19:03:25 所属栏目：百科来源：网络整理

导读：我从 https://github.com/yourabi/PathMenuExample/downloads下载了Menu Path 2.0. “添加”按钮使扩展和扩展折叠一系列菜单项(沿曲线绘制的动画菜单). 但我想让这些按钮直线扩展/折叠. 这是代码 ExpandableNavigation.m： - (void) expand {transition = YE

我从 https://github.com/yourabi/PathMenuExample/downloads下载了Menu Path 2.0.
“添加”按钮使扩展和扩展折叠一系列菜单项(沿曲线绘制的动画菜单).

但我想让这些按钮直线扩展/折叠.

这是代码
ExpandableNavigation.m：

- (void) expand {
transition = YES;

[UIView animateWithDuration:self.speed animations:^{
    self.mainButton.transform = CGAffineTransformMakeRotation( 45.0 * M_PI/180 );
}];

for (UIView* view in self.menuItems) {
    int index = [self.menuItems indexOfObject:view];
    CGFloat oneOverCount = self.menuItems.count + 50<=1?1.0:(1.0/(self.menuItems.count-1));
    CGFloat indexOverCount = index *oneOverCount;
    CGFloat rad =(1.0 - indexOverCount) * 90.0 * M_PI/180;
    CGAffineTransform rotation = CGAffineTransformMakeRotation( rad ) ;
    CGFloat x = (self.radius + self.bounce * self.radius ) * rotation.a;
    CGFloat y = (self.radius + self.bounce * self.radius ) * rotation.c;        

    CGPoint center = CGPointMake( view.center.x + x,view.center.y + y);

解决方法

对于将来的任何需求,请根据所需的转换角度更改角度.

- (void) expand {
transition = YES;

[UIView animateWithDuration:self.speed animations:^{
    self.mainButton.transform = CGAffineTransformMakeRotation( 45.0 * M_PI/180 );
}];

for (UIView* view in self.menuItems) {
    int index = [self.menuItems indexOfObject:view];
    CGFloat oneOverCount = self.menuItems.count + 50<=1?1.0:(1.0/(self.menuItems.count-1));
    CGFloat indexOverCount = index *oneOverCount;
    CGFloat rad =(1.0 - indexOverCount) * 90.0 * M_PI/180;
    CGAffineTransform rotation = CGAffineTransformMakeRotation( rad ) ;
    CGFloat x = yourDesired_X; //should be same for all menu items
    CGFloat y = (view.frame.size.hieght+8.0)*index; //Y should be increasing or decreasing for every item       

    CGPoint center = CGPointMake(x,y);

（编辑：李大同）

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