NSMutableString部分崩溃拦截失败

[ioschangnan-github]

NSString+AvoidCrash分类内
Class stringClass = NSClassFromString(@"__NSCFConstantString");
要替换为Class stringClass = NSClassFromString(@"__NSCFString");
如果用__NSCFConstantString NSMutableString部分崩溃拦截失败还是会崩溃
如 NSMutableString *str = [NSMutableString stringWithString:@"2145"];
[str substringToIndex:10];
[str substringFromIndex:10];
[str substringWithRange:NSMakeRange(5, 10)];

[ioschangnan-github]

NSMutableAttributedString 不能拦截addAttribute:value:range:方法崩溃
如 NSMutableAttributedString *attrStr = [[NSMutableAttributedString alloc]initWithString:@"da"];
[attrStr addAttribute: NSFontAttributeName value: [UIFont boldSystemFontOfSize:13] range: NSMakeRange(0, 4)];

NSAttributedString+AvoidCrash.m文件添加方法和实现
//addAttribute:value:range:
[AvoidCrash exchangeInstanceMethod:NSConcreteMutableAttributedString method1Sel:@selector(addAttribute:value:range:) method2Sel:@selector(avoidCrashAddAttribute:value:range:)];

//=================================================================
// addAttribute:value:range:
//=================================================================
#pragma mark - addAttribute:value:range:

-(NSString *)avoidCrashAddAttribute:(NSString *)attribute value:(NSString *)value range:(NSRange)range{

 NSString *subString = nil;

@try {
    subString = [self avoidCrashAddAttribute:attribute value:value range:range];
}
@catch (NSException *exception) {
    NSString *defaultToDo = AvoidCrashDefaultReturnNil;
    [AvoidCrash noteErrorWithException:exception defaultToDo:defaultToDo];
}
@finally {
    return subString;
}

}