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：
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<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>
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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，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持！
原文链接：http://blog.csdn.net/qq_31810357/article/details/70157789