我如何在 xcode 中获取数组？

Question

How do I fetch the values of my dictionary not a loop. I know how to get a single value using:

NSString *valueStr = [dict objectForKey:@"Key2"];

I need to fetch by looping all keys, I need to search a value in the dictionary.

Answer 1

Since it looks like you are trying to use a NSDictionary you would want to do something like this:

for (NSString *key in [dict allKeys]){
    NSLog(@"%@", [dict objectForKey:key]);
}

or if you dont want to use looping you can the following:

NSArray *keys = [dict allKeys];
NSArray *values = [dict allValues];

Answer 2

for (NSString *key in <#dictionary#>)
{
    <#!loopcontents#>
    [dictionary objectForKey:key]
}

Answer 3

you seem to have a NSDictionary , you can access all keys/values with:

NSArray *keys = [dict allKeys];
NSArray *values = [dict allValues];

refering https://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Classes/NSDictionary_Class/Reference/Reference.html

of course you can loop over that key-value pairs with

for (NSString *key in [dict allKeys]) {

    //get value
    NSString *value = [dict objectForKey:key];

    //print to log
    NSLog (@"%@, %@", key, value);
}

Answer 4

Combining answers from Omarj and Rene:

for (NSString *key in [dict allKeys])
{
    NSString *value = [dict objectForKey:key];
}