發送和接收特殊字符時應用程序崩潰

Question

我正在創建一個聊天應用程序。但是，現在我在發送特殊字符「&」時遇到了一個問題。我使用php web-services發送和接收消息，同時發送「&」字符，之後當有人收到這個字符時，應用程序崩潰。

Answer 1

這裏替換其代碼像波紋管這個角色......

時傳在網絡服務在那個時候取代它像波紋管..

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

，然後當你想收到它在當時的特殊字符替換..

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

顯示後，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); 

在發送字符串網絡serive使用波紋管strign ..

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

，並通過這個yourStringForWeb到網絡服務...

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); 

輸出=>

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