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iphone - 同一个委托(delegate)上的多个 UIActionSheets

转载 作者:可可西里 更新时间:2023-11-01 05:01:18 25 4
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我正在编写一款益智游戏。当用户按下检查按钮时,我会查看他们输入的解决方案是否正确。根据结果​​,我会为他们展示两张行动表中的一张。现在我只有一些 NSLog 语句来确保调用了一些东西,但似乎只有其中一张工作正常。

当我单击 showErrorsActionSheet 中的按钮时,不会调用任何内容。操作表从屏幕上消失,但日志从未打印出来。

我怀疑这与向同一个委托(delegate)(自身)声明两个操作表有关

- (void) checkSolution {

//code determines the value of the BOOL allCorrect

if (allCorrect) { //IF ALL OF THE LETTERS WERE CORRECT
//display UIAlertView;
NSLog(@"allCorrect");
UIActionSheet *levelCompleteActionSheet = [[UIActionSheet alloc] initWithTitle:@"Congratulations! You Have Finished the Level!" delegate:self cancelButtonTitle:@"Review my work" destructiveButtonTitle:@"Choose next puzzle" otherButtonTitles:nil, nil];
[levelCompleteActionSheet showInView:self.view];
[levelCompleteActionSheet release];
}
else {
//[self showIncorrectLettersInRed];

UIActionSheet *showErrorsActionSheet = [[UIActionSheet alloc] initWithTitle:@"Sorry, thats not right. Show errors in red?" delegate:self cancelButtonTitle:@"No Thanks, I'll keep trying" destructiveButtonTitle:@"Yes please, I'm stuck!" otherButtonTitles:nil, nil];
[showErrorsActionSheet showInView:self.view];
[showErrorsActionSheet release];
}
}

应该调用的方法是:

- (void) levelCompleteActionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex {
if (buttonIndex != [actionSheet cancelButtonIndex]) {
NSLog(@"return to levelSelect");
//pushViewController:levelSelect
}
else {
NSLog(@"continue to examine solution");
}
}


- (void) showErrorsActionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex {
if (buttonIndex != [actionSheet cancelButtonIndex]) {
NSLog(@"show errors in red");
}
else {
NSLog(@"continue to try");
}
}

并且我在接口(interface)文件中声明了 UIActionSheet 协议(protocol)如下:

@interface GamePlay : UIViewController <UIActionSheetDelegate> {

最佳答案

为每个 actionSheet 设置一个标签,然后在 UIActionSheet 委托(delegate)中使用 switch 语句。

分配标签

- (void)checkSolution
{
if (allCorrect)
{
UIActionSheet *levelCompleteActionSheet = [[UIActionSheet alloc] initWithTitle:@"Congratulations! You Have Finished the Level!" delegate:self cancelButtonTitle:@"Review my work" destructiveButtonTitle:@"Choose next puzzle" otherButtonTitles:nil, nil];

[levelCompleteActionSheet setTag: 0];

[levelCompleteActionSheet showInView:self.view];
[levelCompleteActionSheet release];
}
else
{
UIActionSheet *showErrorsActionSheet = [[UIActionSheet alloc] initWithTitle:@"Sorry, thats not right. Show errors in red?" delegate:self cancelButtonTitle:@"No Thanks, I'll keep trying" destructiveButtonTitle:@"Yes please, I'm stuck!" otherButtonTitles:nil, nil];

[showErrorsActionSheet setTag: 1];

[showErrorsActionSheet showInView:self.view];
[showErrorsActionSheet release];
}
}

UIActionSheet 委托(delegate)

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex 
{
switch ( actionSheet.tag )
{
case 0: /* levelCompleteActionSheet */
{
switch ( buttonIndex )
{
case 0: /* 1st button*/
break;
case 1: /* 2nd button */
break;
}
}
break;
case 1: /* showErrorsActionSheet */
break;
}
}

同样适用于此类中的其他任何地方,包括 levelCompleteActionSheet:showErrorsActionSheet:。唯一的区别是,您需要为每个 actionSheet 创建一个 iVar,而不是在 checkSolution 中创建它们。

关于iphone - 同一个委托(delegate)上的多个 UIActionSheets,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/8556887/

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