xcode IOS：具有两种不同委托方法的两个 UIAlert
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IOS: two UIAlert with two different delegate methods
提问by cyclingIsBetter
I have an UIAlert
我有一个 UIAlert
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"ok"
message:@"Canc?"
delegate:self
cancelButtonTitle:@"OK"
otherButtonTitles:@"Annul", nil];
[alertView show];
[alertView release];
and its delegate method:
及其委托方法：
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if(buttonIndex == 0)//OK button pressed
{
//do something
}
else if(buttonIndex == 1)//Annul button pressed.
{
//do something
}
and it's all ok but if I have another alertview example "alertViewOne", I want that this alertViewOne have its delegate method and it shouldn't use delegate method of first alertview; how does change my code?
一切都可以，但是如果我有另一个警报视图示例“alertViewOne”，我希望这个 alertViewOne 有它的委托方法，它不应该使用第一个警报视图的委托方法；如何更改我的代码？
回答by shannoga
Simply set a tag to each Alert view and check which one sent the messeg.
只需为每个警报视图设置一个标签，然后检查哪个发送了消息。
alertView.tag=0;
And then
进而
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if(alertView.tag==0){
if(buttonIndex == 0)//OK button pressed
{
? ? //do something
}
else if(buttonIndex == 1)//Annul button pressed.
{
? ? //do something
}
}else{
if(buttonIndex == 0)//OK button pressed
{
? ? //do something
}
else if(buttonIndex == 1)//Annul button pressed.
{
? ? //do something
}
}
UpdateThere is a better solution using blocks.
更新使用块有更好的解决方案。
You can look at this project for example: UIAlertView-Blocks
你可以看看这个项目，例如： UIAlertView-Blocks
And as far as I know iOS8 will come with native alerts with blocks.
据我所知，iOS8 将带有带有块的本机警报。
