ios - nsdata dataWithBytes 在 iOS7 上导致崩溃

Question

它仅在 iOS7 上崩溃

+(PageSection *)initwithPageSection:_anchor withHeader:_subHeader withDetails:_text withPhoneNumberIfValid:(id)_phoneNo
{
    const char *tempAnchor = [_anchor cStringUsingEncoding:[NSString defaultCStringEncoding]];
    const char *tempSubHeader = [_subHeader cStringUsingEncoding:[NSString defaultCStringEncoding]];
    const char *tempText = [_text cStringUsingEncoding:[NSString defaultCStringEncoding]];
    const char *tempPhoneNo = [_phoneNo cStringUsingEncoding:[NSString defaultCStringEncoding]];

    NSData *anchorData = [NSData dataWithBytes:tempAnchor length:[_anchor length]];
    NSData *subHeaderData = [NSData dataWithBytes:tempSubHeader length:[_subHeader length]];
    NSData *textData = [NSData dataWithBytes:tempText length:[_text length]];
    NSData *phoneData = [NSData dataWithBytes:tempPhoneNo length:[(NSString *)_phoneNo length]];



    PageSection *p =[[PageSection alloc]init];
    p.anchorTag=[[NSString alloc] initWithData:anchorData encoding:NSUTF8StringEncoding];
    p.subHeader=[[NSString alloc] initWithData:subHeaderData encoding:NSUTF8StringEncoding];
    p.text=[[NSString alloc] initWithData:textData encoding:NSUTF8StringEncoding];
    p.phoneNo=[[NSString alloc] initWithData:phoneData encoding:NSUTF8StringEncoding];
    return p;
}

这一行可能会导致崩溃:NSData *textData = [NSData dataWithBytes:tempText length:[_text length]];

有什么想法吗？？

Answer 1

实际上它返回 NULL 但仅适用于 iOS7 const char *tempText = [_text cStringUsingEncoding:[NSString defaultCStringEncoding]]; NSLog(@"tex: %s", tempText);

这就是它崩溃的原因