加信到字符串目標C若跌破聲明

你好是我使用加信到字符串目標C若跌破聲明

currentCardDisplayed = [NSMutableString stringWithFormat:@"%@.png", [[cardsShuffled objectAtIndex:currentCard-1] substringToIndex:[[cardsShuffled objectAtIndex:currentCard-1] length]-1]]; 

NSString *rule; 

if([[currentCardDisplayed stringByAppendingString:@"e"] isEqualToString:currentCardName]){ 
    rule = @"drink"; 
}else if([[currentCardDisplayed stringByAppendingString:@"2"]isEqualToString:currentCardName]){ 
    rule = @"drink2"; 
}else if([[currentCardDisplayed stringByAppendingString:@"3"]isEqualToString:currentCardName]){ 
    rule = @"drink3"; 
}else if([[currentCardDisplayed stringByAppendingString:@"4"]isEqualToString:currentCardName]){ 
    rule = @"drink4"; 
}else if([[currentCardDisplayed stringByAppendingString:@"5"]isEqualToString:currentCardName]){ 
    rule = @"drink5"; 
}else if([[currentCardDisplayed stringByAppendingString:@"6"]isEqualToString:currentCardName]){ 
    rule = @"drink6"; 
}else if([[currentCardDisplayed stringByAppendingString:@"7"]isEqualToString:currentCardName]){ 
    rule = @"drink7"; 
}else if([[currentCardDisplayed stringByAppendingString:@"8"]isEqualToString:currentCardName]){ 
    rule = @"drink8"; 
}else if([[currentCardDisplayed stringByAppendingString:@"9"]isEqualToString:currentCardName]){ 
    rule = @"drink9"; 
}else if([[currentCardDisplayed stringByAppendingString:@"0"]isEqualToString:currentCardName]){ 
    rule = @"drink10"; 
}else if([[currentCardDisplayed stringByAppendingString:@"k"]isEqualToString:currentCardName]){ 
    rule = @"drinkjack"; 
}else if([[currentCardDisplayed stringByAppendingString:@"n"]isEqualToString:currentCardName]){ 
    rule = @"drinkqueen"; 
}else if([[currentCardDisplayed stringByAppendingString:@"g"]isEqualToString:currentCardName]){ 
    rule = @"drinkking"; 
} 
NSLog(@" %@ ", currentCardDisplayed); 
NSLog(@" %@ ", currentCardName); 
NSLog(@"%@", rule); 
NSLog(@" %@", [cardsShuffled objectAtIndex:currentCard-1]); 
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Rules" message:rule delegate:nil cancelButtonTitle:@"Okay" otherButtonTitles:nil, nil]; 

[alert show];

我試圖添加到末尾的字母沒有到達那裏的代碼。我首先刪除了一個字母，但是然後在我的if語句中，我想檢查是否向該變量添加了另一個字母，它等於另一個字符串。

任何人都可以看到我錯了

下面是從

2012-12-11 20:06:50.853 Kings_1.03[4915:c07] club.png 
2012-12-11 20:06:50.855 Kings_1.03[4915:c07] club9.png 
2012-12-11 20:06:50.857 Kings_1.03[4915:c07] (null) 
2012-12-11 20:06:50.858 Kings_1.03[4915:c07] club9

任何幫助表示讚賞

的nslogs輸出樣品感謝你

來源

2012-12-11 Alan Fletcher

您必須添加.png在你做if測試後。用你的例子，你現在的做法是將9添加到club.png中，這會讓club.png9不是club9，所以你的測試永遠不會滿足。

最簡單的方法可能會不追加在第一行巴紐，然後在你的if語句，追加兩個字母/數字和.png，所以：

}else if([[currentCardDisplayed stringByAppendingString:@"9.png"]isEqualToString:currentCardName]){ 
    rule = @"drink9";

來源

2012-12-11 20:18:27 rdelmar

笏做你的意思，你能舉出一個你認爲不錯的例子嗎？或者這是你的意思，如果（[[currentCardDisplayed stringByAppendingString：@「e.png」] isEqualToString：currentCardDisplayed]）{0} {0}條規則@ @「drink」; } –

@AlanFletcher，不，只要在第一行中定義currentCardDisplayed時不添加.png，那麼測試就可以工作。 – rdelmar

@AlanFletcher，很抱歉，不會因爲您將它與具有.png的字符串進行比較而無法正常工作。 – rdelmar

加信到字符串目標C若跌破聲明

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