我想在阵列

-5

Opening :- (
"Not Available", 
    { 
    "open_now" = 1; 
    "weekday_text" =   (
    ); 
}, 
    { 
    "open_now" = 1; 
    "weekday_text" =   (
    ); 
}, 
    { 
    "open_now" = 1; 
    "weekday_text" =   (
    ); 
}, 
    { 
    "open_now" = 1; 
    "weekday_text" =   (
    ); 
}, 
    { 
    "open_now" = 1; 
    "weekday_text" =   (
    ); 
}, 
    { 
    "open_now" = 1; 
    "weekday_text" =   (
    ); 
}, 
    { 
    "open_now" = 1; 
    "weekday_text" =   (
    ); 
}, 
    { 
    "open_now" = 1; 
    "weekday_text" =   (
    ); 
}, 
    { 
    "open_now" = 1; 
    "weekday_text" =   (
    ); 
}, 
    { 
    "open_now" = 1; 
    "weekday_text" =   (
    ); 
}, 
    { 
    "open_now" = 1; 
    "weekday_text" =   (
    ); 
}, 
    { 
    "open_now" = 1; 
    "weekday_text" =   (
    ); 
}, 
    { 
    "open_now" = 1; 
    "weekday_text" =   (
    ); 
}, 
    { 
    "open_now" = 1; 
    "weekday_text" =   (
    ); 
}, 
    { 
    "open_now" = 1; 
    "weekday_text" =   (
    ); 
}, 
    { 
    "open_now" = 1; 
    "weekday_text" =   (
    ); 
}, 
"Not Available", 
    { 
    "open_now" = 1; 
    "weekday_text" =   (
    ); 
}, 
"Not Available"

）我想在阵列

关键open_now值这是我的NSArray的输出。它包含一些字符串为Not Available，它包含一些以{“open_now”= 1开头的NSDictionary; “weekday_text”=（）; }。我想只有open_now的值。我不知道如何在新的NSArray中获得open_now的价值。请任何人帮助我。

来源

2017-05-30 Manesh Pillay

重新格式化帖子，在文本前插入8个空格以进行缩进。 – SPlatten

是的，使用NSArray -valueForKey：方法。

NSArray *extracted = [sourceArray valueForKey:@"a key"];

来源

2017-05-30 09:48:25

我已经尝试过#Subrat Padhi同样不起作用 –

请让我们知道你的代码示例，可以帮助我理解问题的出处。 –

您可以使用valueForKeyPath的NSArray的方法来获得特定的键的值。

NSArray *aryValue = [YOUR_ARRAY valueForKeyPath:@"open_now"];

来源

2017-05-30 10:42:45 Nirmalsinh

它不工作。在我的数组中有一些字符串和一些NSDictionary随机存储。所以我只想要关键“open_now”的价值。它给出的例外： - 由于未捕获的异常'NSUnknownKeyException'，原因：'[<__ NSCFConstantString 0x10ba54d20> valueForUndefinedKey：]：该类不是符合密钥open_now密钥的密钥值。 –

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