iOS开发中仿Tumblr点赞心破碎动画效果

 最近tumblr轻博客无论是web端还是移动端，都非常受欢迎，简单调研了一下，其中动画是我感兴趣的，特此写了个仿tumblr点赞心破碎动画；

1.首先看下效果：

2.模仿tumblr中的效果应用如下：

原理：使用按钮点击action增加两个事件，通过改变背景hidden和frame，切换图片，增加动画效果等；

setupui及touch action：

<span style="font-size:14px;">- (void)setupui 
{ 
  // 点击的btn 
  uibutton *praisebtn = [uibutton buttonwithtype:uibuttontypecustom]; 
  praisebtn.frame = cgrectmake(100, 200, kkpraisebtnwh, kkpraisebtnwh); 
  [praisebtn setimage:[uiimage imagenamed:@"icon_like"] forstate:uicontrolstatenormal]; 
  [praisebtn setimage:[uiimage imagenamed:@"icon_likeon"] forstate:uicontrolstateselected]; 
  [self.view addsubview:praisebtn]; 
  [praisebtn addtarget:self action:@selector(clickthebtn:) forcontrolevents:uicontroleventtouchupinside]; 
  _praisebtn = praisebtn; 
  // 放大后的btn 
  _coverbtn = [uibutton buttonwithtype:uibuttontypecustom]; 
  _coverbtn.frame = praisebtn.frame; 
  _coverbtn.alpha = 0; 
  [_coverbtn setimage:[uiimage imagenamed:@"big"] forstate:uicontrolstateselected]; 
  [_coverbtn setimage:[uiimage imagenamed:@"big"] forstate:uicontrolstatenormal]; 
  [self.view insertsubview:_coverbtn belowsubview:praisebtn]; 
  _cancelpraiseimg = [[uiimageview alloc]initwithframe:cgrectmake(80, 150, kkpraisebtnwh*2, kkpraisebtnwh*2*kktobrokenheartwh)]; 
  _cancelpraiseimg.hidden = yes; 
  _cancelpraiseimg.centerx = _praisebtn.centerx; 
  [self.view addsubview:_cancelpraiseimg]; 
} 
-(void)clickthebtn:(uibutton *)btn 
{ 
  [self playanimation]; 
  btn.userinteractionenabled = no; 
  btn.selected = !btn.selected; 
} 
-(void)playanimation{ 
  if (!_praisebtn.selected) { 
    _coverbtn.alpha = 1; 
    [uiview animatewithduration:1.0f animations:^{ 
      _coverbtn.frame = cgrectmake(80, 100, kkpraisebtnwh*2, kkpraisebtnwh*2); 
      cakeyframeanimation *anima = [cakeyframeanimation animationwithkeypath:@"transform.rotation"]; 
      nsvalue *value1 = [nsnumber numberwithfloat:-m_pi/180*5]; 
      nsvalue *value2 = [nsnumber numberwithfloat:m_pi/180*5]; 
      nsvalue *value3 = [nsnumber numberwithfloat:-m_pi/180*5]; 
      anima.values = @[value1,value2,value3]; 
      anima.repeatcount = maxfloat; 
      [_coverbtn.layer addanimation:anima forkey:nil]; 
      _coverbtn.alpha = 0; 
      _coverbtn.centerx = _praisebtn.centerx; 
    } completion:^(bool finished) { 
      _coverbtn.frame = _praisebtn.frame; 
      _praisebtn.userinteractionenabled = yes; 
    }]; 
  } else { 
    _cancelpraiseimg.hidden = no; 
    nsarray *imgarr = [nsarray arraywithobjects:[uiimage imagenamed:@"icon_like_broken1"],[uiimage imagenamed:@"icon_like_broken2"],[uiimage imagenamed:@"icon_like_broken3"],[uiimage imagenamed:@"icon_like_broken4"], nil nil]; 
    _cancelpraiseimg.animationimages = imgarr; 
    _cancelpraiseimg.animationduration = kkborkentime; 
    _cancelpraiseimg.animationrepeatcount = 1; 
    [_cancelpraiseimg startanimating]; 
    [uiview animatewithduration:kkborkentime animations:^{ 
      _cancelpraiseimg.frame = cgrectmake(80, 200, kkpraisebtnwh*2, kkpraisebtnwh*2*kktobrokenheartwh); 
      _cancelpraiseimg.alpha = 0; 
    }completion:^(bool finished) { 
      _cancelpraiseimg.frame = cgrectmake(80, 150, kkpraisebtnwh*2, kkpraisebtnwh*2*kktobrokenheartwh); 
      _cancelpraiseimg.alpha = 1; 
      _praisebtn.userinteractionenabled = yes; 
    }]; 
  } 
}</span> 

以上所述是小编给大家介绍的ios开发中仿tumblr点赞心破碎动画效果，希望对大家有所帮助