iOS學習-字符串的刪除替換

字符串的常用處理，刪除，替換。記錄一下，方便查找。

 

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- (void)viewDidLoad { [super viewDidLoad]; NSString *str1 = @"<hello,wo r d!>"; //刪除字符串兩端的尖括號
    NSMutableString *mString = [NSMutableString stringWithString:str1]; //第一個參數是要刪除的字符的索引，第二個是從此位開始要刪除的位數
    [mString deleteCharactersInRange:NSMakeRange(0, 1)]; [mString deleteCharactersInRange:NSMakeRange(mString.length-1, 1)]; NSLog(@"mString:%@",mString); //刪除字符串中的空格
    NSString *str2 = [mString stringByReplacingOccurrencesOfString:@" " withString:@""]; NSLog(@"str2:%@",str2); //同樣的可以替換字符
    NSString *str3 = [str2 stringByReplacingOccurrencesOfString:@"," withString:@"好"]; NSLog(@"str3:%@",str3); //替換某一位置的字符
    NSString *str4 = [str3 stringByReplacingCharactersInRange:NSMakeRange(0, 1) withString:@"哈哈"]; NSLog(@"str4:%@",str4); }

 

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