这是从Swift到Objective C的正确转换吗？

Question

在迅速

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在Objective C中

(![[tempPlays objectForKey:@"1"] integerValue]) // tempPlays is NSDictionary 

帮助在此也？

斯威夫特

button0.setTitle(plays[0] == 0 ? "O": (plays[0] == 1 ? "X" : button0.titleLabel!.text!), forState: UIControlState.Normal)` 

目标C

[_btn0 setTitle:([[playDictionary objectForKey:@"0"]integerValue] == 0 ? @"O" : ([[playDictionary objectForKey:@"0"]integerValue] == 1 ? @"X" : _btn0.titleLabel.text)) forState:UIControlStateNormal];` 

新到iOS ..

Answer 1

在Objective-C

if (![tempPlays.allValues containsObject:@"1"]) {} 

或

if (![tempPlays.allValues containsObject:@(1)]) {} 

，让您更案例

NSString *titleBtn = _btn0.titleLabel.text; 
if ([playDictionary[@"0"] integerValue] == 0) { 
    titleBtn = @"0"; 
} 
else if ([playDictionary[@"1"] integerValue] == 1){ 
    titleBtn = @"X"; 
} 
[_btn0 setTitle:titleBtn forState:UIControlStateNormal];