目标c,动画块,动画和完成之间的延迟

Question

我有几个动画块,所有动画块都遵循这种基本格式,具有不同的延迟,以便它们一个接一个地触发:

[UIView animateWithDuration:.85 delay:3 options:opts animations:[animations objectAtIndex:ww] completion:[completions objectAtIndex:ww]];

选项只是UIViewAnimationOptionAutoreverse一个变量,便于访问.

我希望在动画和完成之间有一个延迟,以便图像在返回到原始图像之前保持一点点位置.我考虑使用几个更简单的animateWithDuration:animations:块,但我没有看到任何方法来做文档中的延迟,除非我遗漏了一些东西.

@ Paul.s这里是我用你给我的代码:

void (^completion)(void) = ^{
[UIView animateWithDuration:.5
                  delay:5
                options:UIViewAnimationCurveLinear
             animations:[completions objectAtIndex:ww]
             completion:^(BOOL finished) {}];
};


// Call your existing animation with the new completion block
[UIView animateWithDuration:.5
                  delay:1
                options:UIViewAnimationCurveLinear
             animations:[animations objectAtIndex:ww]
             completion:^(BOOL finished) {
               completion();
             }];

作为参考,动画非常简单,只需将图像从一个点移动到另一个点然后再移回.它崩溃的点[UIView animateWithDuration:.5是定义完成块的行,它在动画的第一部分运行后崩溃.

Answer 1

传递另一个动画到完成怎么样？

更新 我已将代码更新为我设置的示例中的确切工作代码.这是使用Empty Application模板设置的干净项目

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];

    CGRect startFrame = CGRectMake(0, 0, 100, 100);

    UIView *view = [[UIView alloc] initWithFrame:startFrame];
    view.backgroundColor = [UIColor greenColor];

    [self.window addSubview:view];

    // Set up your completion animation in a block
    void (^completion)(void) = ^{
        [UIView animateWithDuration:0.5f
                              delay:0.5f
                            options:UIViewAnimationCurveLinear
                         animations:^{
                             view.frame = startFrame;
                         }
                         completion:nil];
      };


      // Call your existing animation with the new completion block
      [UIView animateWithDuration:4
                            delay:1
                          options:UIViewAnimationCurveLinear
                       animations:^{
                           view.frame = CGRectMake(200, 200, 10, 10);
                       }
                       completion:^(BOOL finished) {
                           completion();
                       }];



        self.window.backgroundColor = [UIColor whiteColor];
        [self.window makeKeyAndVisible];
        return YES;
}