大佬教程收集整理的这篇文章主要介绍了ios – UIKit Dynamics“SolveVelocityConstraints”崩溃,大佬教程大佬觉得挺不错的,现在分享给大家,也给大家做个参考。
Assertion Failed: (a.x >= 0.0f && a.y >= 0.0f),function SolveVeLocityConsTraints,file /sourceCache/PhysicsKit/PhysicsKit- 4.6/PhysicsKit/Box2D/Dynamics/Contacts/b2ContactSolver.cpp,line 422.
UIDynamicAnimator *animator = [[UIDynamicAnimator alloc] initWithReferenceView:self]; UIGravityBehavior *gravityBehavior = [[UIGravityBehavior alloc] initWithItems:@[self.reWARDButton]]; gravityBehavior.gravityDirection = CGVectorMake(0.0,1.0); gravityBehavior.magnitude = 1.0f; UICollisionBehavior* collisionBehavior = [[UICollisionBehavior alloc] initWithItems:@[self.reWARDButton,self.processingView]]; collisionBehavior.collisionDelegate = self; UIEdgeInsets insets = UIEdgeInsetsmake(-700,60,200,60); [collisionBehavior setTranslatesReferenceBoundsIntoBoundaryWithInsets:insets]; UIDynamicItemBehavior* propertiesBehavior = [[UIDynamicItemBehavior alloc] initWithItems:@[self.reWARDButton]]; float elasticity = arc4random() % 4 * 0.1 + 0.1f; propertiesBehavior.elasticity = elasticity; [animator addBehavior:propertiesBehavior]; [animator addBehavior:gravityBehavior]; [animator addBehavior:collisionBehavior]; self.animator = animator;
UIDynamicItemBehavior *itemBehavior = [[UIDynamicItemBehavior alloc] initWithItems:self.items]; [itemBehavior setDensity:500.0f]; [self.animator itemBehavior];
感谢KillerRhino的评论和他联系的Box2D主题引导我走下这条道路,将这个项目的质量视为问题.根据UIDynamicItemBehavior documentation,密度及其尺寸决定了质量.希望这种解决方法在其他条件/设置下保持不变.
我认为这个问题只发生在配备新A7芯片(iPhone 5s,iPad Air,iPad Mini ReTina)的新设备上.也许64位问题?
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