阅读URL内容XCode sigabrt错误

Question

这是我的代码，它给出了"Program received signal "SIGABRT".
我是新iOS发展。

- (IBAction)getData { 

    NSURL *URL = @"http://www.oeslabs.com/aa.txt"; 

    NSData *data = [NSData dataWithContentsOfURL:URL]; 

    NSString *string = [NSString stringWithUTF8String:[data bytes]];  
    if (string == nil) { 

     // an error occurred 
     label1.text =@"Error"; 
    } 
    else{ 
     label1.text = string; 
    } 
} 

Answer 1

你也可以把代码

NSString *urlString = [NSString stringWithFormat:@"http://www.oeslabs.com/aa.txt"]; 
NSURL *myUrl = [NSURL URLWithString:[urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; 
. 
. 
. 
. 
. 

这里是stringByAddingPercentEscapesUsingEncoding.的官方文档用于转换法律URL字符串。

Answer 2

您试图分配NSString 到NSURL

更换

NSURL *URL = @"http://www.oeslabs.com/aa.txt"; 

随着

NSURL *URL = [NSURL URLWithString:@"http://www.oeslabs.com/aa.txt"];