学习了一些NSArray的用法记录下。:lol

1. //创建数组的类方法  
   
2. NSArray * myArray = [NSArray arrayWithObjects:@"aaaaa",@"mac",@"String", nil nil];  
   
3. NSArray * array1 = [NSArray arrayWithArray:myArray];   
   
4. /获取数组个数   
   
5. NSLog(@"myArray count :%d", [myArray count]);   
   
6. //追加对象，返回新的数组对象   
   
7. NSArray *array2 = [array1 arrayByAddingObject:@"gao"];   
   
8. NSLog(@"array2 :%@", array2);   
   
9. //是否包含指定对象   
   
10. NSLog(@"array2 baohan :%@", [array2 containsObject:@"gao"]);  
    
11. //从数组合并元素到字符串- componentsJoinedByString:  
    
12. NSArray *array = [[NSArray alloc] initWithObjects:@"One",@"Two",@"Three",@"Four",nil];  
    
13. NSString *string = [array componentsJoinedByString:@","];  
    
14. NSLog(@"string:%@",string);  
    
15. //字符串分割成数组  
    
16. NSString *string = [[NSString alloc] initWithString:@"One,Two,Three,Four"];  
    
17. NSLog(@"string:%@",string);      
    
18. NSArray *array = [string componentsSeparatedByString:@","];  
    
19. NSLog(@"array:%@",array);  
    
20. //快速遍历数组   
    
21. for (id element in array2) {   
    
22.        NSLog(@"element :%@", element);   
    
23. }   
    

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学习了一些NSArray的用法记录下。:lol

1. //创建数组的类方法  
   
2. NSArray * myArray = [NSArray arrayWithObjects:@"aaaaa",@"mac",@"String", nil nil];  
   
3. NSArray * array1 = [NSArray arrayWithArray:myArray];   
   
4. /获取数组个数   
   
5. NSLog(@"myArray count :%d", [myArray count]);   
   
6. //追加对象，返回新的数组对象   
   
7. NSArray *array2 = [array1 arrayByAddingObject:@"gao"];   
   
8. NSLog(@"array2 :%@", array2);   
   
9. //是否包含指定对象   
   
10. NSLog(@"array2 baohan :%@", [array2 containsObject:@"gao"]);  
    
11. //从数组合并元素到字符串- componentsJoinedByString:  
    
12. NSArray *array = [[NSArray alloc] initWithObjects:@"One",@"Two",@"Three",@"Four",nil];  
    
13. NSString *string = [array componentsJoinedByString:@","];  
    
14. NSLog(@"string:%@",string);  
    
15. //字符串分割成数组  
    
16. NSString *string = [[NSString alloc] initWithString:@"One,Two,Three,Four"];  
    
17. NSLog(@"string:%@",string);      
    
18. NSArray *array = [string componentsSeparatedByString:@","];  
    
19. NSLog(@"array:%@",array);  
    
20. //快速遍历数组   
    
21. for (id element in array2) {   
    
22.        NSLog(@"element :%@", element);   
    
23. }   
    

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