类似Mac 登录不成功的shake效果
-(void) shake {
??? // "Shakes" similar to OS X login screen
??? CGAffineTransform moveRight = CGAffineTransformTranslate(CGAffineTransformIdentity, 20, 0);
??? CGAffineTransform moveLeft = CGAffineTransformTranslate(CGAffineTransformIdentity, -20, 0);
???
??? [UIView animateWithDuration:0.1 animations:^{
??????? // Translate left
??????? self.transform = moveLeft;
???????
??? } completion:^(BOOL finished) {
???????
??????? [UIView animateWithDuration:0.1 animations:^{
???????????
??????????? // Translate right
??????????? self.transform = moveRight;
???????????
??????? } completion:^(BOOL aFinished) {
???????????
??????????? [UIView animateWithDuration:0.1 animations:^{
???????????????
??????????????? // Translate left
??????????????? self.transform = moveLeft;
???????????????
??????????? } completion:^(BOOL afinished) {
???????????????
??????????????? [UIView animateWithDuration:0.1 animations:^{
???????????????????
??????????????????? // Translate to origin
??????????????????? self.transform = CGAffineTransformIdentity;
??????????????? }];
??????????? }];
???????????
??????? }];
??? }];
}
