Question

我正在开发一个应用程序，当用户点击它时，我可以旋转删除按钮，如下所示

[UIView beginAnimations:nil context:nil];

    [UIView setAnimationDuration:.5];

    btn.transform=CGAffineTransformMakeRotation((0.0174532925)*90);

    //put the -ve sign before 30 if you want to rotate the button in the anticlockwise else use this one 

    [UIView commitAnimations];
    selectedRow=btn.tag;
    [self.tableView reloadData];

我想在动画完成后重新加载表格我该怎么办？

Answer 1

[UIView beginAnimations:@"rotateButton" context:nil];
[UIView setAnimationDuration:.5];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:@selector(myAnimDidStop:finished:context:)];
btn.transform = CGAffineTransformMakeRotation((0.0174532925)*90);
[UIView commitAnimations];
selectedRow = btn.tag;

委托方法如下：

- (void)myAnimDidStop:(NSString *)animID finished:(BOOL)finished context:(void*)ctx {
    if ([@"rotateButton" isEqualToString:animID]) {
        [self.tableView reloadData];
    }
}

请注意，如果您的目标是iOS 4及更高版本，则可以使用动画块：

[UIView animateWithDuration:0.5 
                 animations:^{ 
                     btn.transform = CGAffineTransformMakeRotation((0.0174532925)*90);
                     selectedRow = btn.tag;
                 } 
                 completion:^(BOOL finished) { 
                     [self.tableView reloadData]; 
                 }];

如何检查按钮的旋转

1 个答案: