Question

我是编程UIAlertView的新手。我的想法是做一个弹出窗口，除了默认的关闭按钮之外，在启动应用程序时显示另外两个按钮。其中一个按钮是指向appstore的链接，另一个按钮是永久关闭该弹出窗口。除了最后一个按钮，我已经完成了所有工作。有什么帮助吗？

谢谢！

- (void)viewDidLoad {

alert = [[UIAlertView alloc] initWithTitle:@"Rate!" message:@"Your rate is much apreciated" delegate:self cancelButtonTitle:@"Not Now" otherButtonTitles:@"Okay!   ", @"No, Thanks!", nil ];
[alert show];
[alert release];
 }



-(void)alertView:(UIAlertView *) alertView clickedButtonAtIndex:(NSInteger)buttonIndex{

if (buttonIndex == 0) {

}

if (buttonIndex == 1) {

     [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://itunes.apple.com/pt/app/designertools/id444778173?mt=8#" ]];

}


}

Answer 1

你可以使用这个功能

-(void)dismiss{
     [self performSelector:@selector(dismissAlertView:)withObject:alertView afterDelay:2];
}

-(void)dismissAlertView:(UIAlertView *)alertView{
    [alertView dismissWithClickedButtonIndex:0 animated:YES];
}

Answer 2

你会想要使用像NSUserDefaults这样的东西，也许是这样的：

- (void)viewDidLoad
{
    if(![[NSUserDefaults standardUserDefaults] boolForKey:@"com.mycompany.myapp.block_rate_reminder"])// this could be any string as long as it's descriptive enough for you (and match what you use to set, of course)
    {
        alert = [[UIAlertView alloc] initWithTitle:@"Rate!" message:@"Your rate is much apreciated" delegate:self cancelButtonTitle:@"Not Now" otherButtonTitles:@"Okay!   ", @"No, Thanks!", nil ];
        [alert show];
        [alert release];
    }
}



-(void)alertView:(UIAlertView *) alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{

    if (buttonIndex == 0) {

    }

    if (buttonIndex == 1) {

        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://itunes.apple.com/pt/app/designertools/id444778173?mt=8#" ]];

    }

    if (buttonIndex == 2)
    {
        [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"com.mycompany.myapp.block_rate_reminder"];
    }
}

Answer 3

您似乎在为应用程序商店中的应用评分提醒，而不是回答您的直接（技术）问题，我会尝试解决更大的问题。您应该考虑使用现有的开源解决方案来处理提醒用户进行评论，您可以控制一些功能，例如每天启动多少次启动它们。

我可以推荐Appirater by Arash Pyan。它的作用是自动处理应用程序的评级部分。用户可以直接进入App的评论页面，并且可以自定义。新开发人员的最佳解决方案！它可以在GitHub上找到。

demosthenese的

iRate是一个类似的解决方案，但更清洁，支持快速应用切换。

使用这些“现成的”解决方案！它应该更好，而不是自己处理它！它们包括有关如何自定义功能的文档和示例。

另外，我认为Apple不建议使用AlertViews来让用户对应用程序进行评级。负责任地使用提到的工具。不要太快提示用户，并确保包含永久关闭按钮！

如果您在这里寻找问题的技术解决方案（例如，在启动提示时使用永久解雇按钮），这里概述了您应该做什么：

-(void)viewdidload{

//Access NSUSerDefaults and check a variable called launch
// launch's default value is 0
if (launch == 0) {

    alert = [[UIAlertView alloc] initWithTitle:@"Rate!" message:@"You'll see this everytime you launch until you click Dismiss Forever" delegate:self cancelButtonTitle:@"Not Now" otherButtonTitles:@"Okay!   ", @"Dismiss Alert and Don't Show it to me", nil ];
[alert show];
[alert release];
 }

} 
else
{
//nothing
}
//continue customizing
}

-(void)alertView:(UIAlertView *) alertView clickedButtonAtIndex:(NSInteger)buttonIndex{

if (buttonIndex == 0) 
//Assume this is the Okay Button
 {

//Now use NSUserDefaults and set a variable called launch to 1 
// the default value for launch should be 0
// now that its set to 1
     [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"ILoveAlertViews.com" ]];


}

if (buttonIndex == 1) {
//assume this is the dismiss button
//Now use NSUserDefaults and set a variable called launch to 2
//2 means that they never want to see it. The AlertView should not be called on the next launch 


}


}

Answer 4

首先，添加另一个if语句测试buttonIndex 2.然后，我相信你会想要使用NSUserDefaults类来存储BOOL。然后，如果点击“不，谢谢”按钮，则将此BOOL设置为NO。在viewdidLoad方法中测试此BOOL的值，并仅在BOOL读为YES时显示警报。

单击按钮后，弹出警报将永远消失

4 个答案: