发送和接收特殊字符时应用程序崩溃

Question

我正在创建一个聊天应用程序。但是，现在我在发送特殊字符“&”时遇到了一个问题。我使用php web-services发送和接收消息，同时发送“&”字符，之后当有人收到这个字符时，应用程序崩溃。

Answer 1

这里替换其代码像波纹管这个角色......

时传在网络服务在那个时候取代它像波纹管..

yourString = [yourString stringByReplacingOccurrencesOfString:@"&" withString:@"&"]; 

，然后当你想收到它在当时的特殊字符替换..

yourString = [yourString stringByReplacingOccurrencesOfString:@"&" withString:@"&"]; 

显示后，在UITextView或UITextField

UPDATE：

if (string2 != nil) { 
    string1 = [NSString stringWithString:string2]; 
    NSString *strTemp = [NSString stringWithString:string2]; 
    NSLog(@"\n\n Temp String ==>> %@",strTemp); 
} 

UPDATE：

NSString *yourString = @"Hello & How Are You?"; 
yourString = [yourString stringByReplacingOccurrencesOfString:@"&" withString:@"&"]; 
NSLog(@"\n\n String Here => %@",yourString); 

在发送字符串网络serive使用波纹管strign ..

NSString *yourStringForWeb = @"Hello & How Are You?"; 
yourStringForWeb = [yourStringForWeb stringByReplacingOccurrencesOfString:@"&" withString:@"&"]; 

，并通过这个yourStringForWeb到网络服务...

NSString *string = @"Hello & How Are You?"; 

string = [string stringByReplacingOccurrencesOfString:@"&" withString:@"&"]; 
string = [string stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 
string = [string stringByReplacingOccurrencesOfString:@"&" withString:@"%26"]; 
NSLog(@"\n\n ===>> Before ==>> %@",string); 

NSString *string2 = string; 

string2 = [string2 stringByReplacingOccurrencesOfString:@"%20" withString:@" "]; 
string2 = [string2 stringByReplacingOccurrencesOfString:@"%26" withString:@"&"]; 
NSLog(@"\n\n ===>> After ==>> %@",string2); 

输出=>

===>> Before ==>> Hello%20%26%20How%20Are%20You? 
===>> After ==>> Hello & How Are You?