XueYangLee / SafeObject

统一处理数组越界、字符串下标越界及字典赋值为空时造成的崩溃问题

SafeObject

利用方法替换实现统一处理数组越界、字符串下标越界及字典赋值为空时造成的崩溃问题

方法使用

将SafeObject文件夹拖入工程即可

NSArray *array=@[@"1",@"2",@"3"];
NSMutableArray *muArray=[NSMutableArray arrayWithArray:array];
[muArray removeObjectAtIndex:10];
[muArray replaceObjectAtIndex:100 withObject:@"4"];
[muArray insertObject:@"4" atIndex:5];
[muArray exchangeObjectAtIndex:0 withObjectAtIndex:5];
NSLog(@"%@>>数组下标越界超出>",[muArray objectAtIndex:10]);
NSLog(@"%@>>可变数组替换>",muArray);

NSString *str=@"数组字典字符串越界问题处理";
NSLog(@"%@>>字符串下标越界超出>",[str substringFromIndex:100]);
NSLog(@"%@>>>>字符串替换越界>",[str stringByReplacingCharactersInRange:NSMakeRange(30, 4) withString:@"****"]);
NSMutableString *muStr=[NSMutableString stringWithString:str];
[muStr replaceCharactersInRange:NSMakeRange(50, 30) withString:@"haha"];
[muStr insertString:@"haha" atIndex:1000];
NSLog(@"%@>>>>可变字符串替换>",muStr);

NSString *emptyString=nil;
NSDictionary *dic=@{@"name":@"haha",@"age":@"18",@"empty":emptyString};
NSLog(@"%@>>字典复制为空>",dic);

NSMutableDictionary *muDic=[NSMutableDictionary dictionaryWithDictionary:dic];
[muDic removeObjectForKey:nil];
[muDic setObject:nil forKey:nil];
NSLog(@"%@>>字典移除或添加的的key或object为nil>",muDic);

涉及处理的方法

• NSArray/NSMutableArray

  • objectAtIndex
  • removeObjectsInRange
  • removeObject: inRange:
  • insertObject: atIndex:
  • objectAtIndexedSubscript
  • replaceObjectAtIndex:withObject:
  • exchangeObjectAtIndex:withObjectAtIndex:

• NSDictionary/NSMutableDictionary

  • removeObjectForKey
  • setObject:forKey:
  • initWithObjects:forKeys:count:

• NSMutableString

  • substringFromIndex
  • substringToIndex
  • substringWithRange
  • rangeOfString: options:range: locale:
  • appendString
  • stringByReplacingCharactersInRange:withString:
  • replaceCharactersInRange:withString:
  • insertString:atIndex:
  • deleteCharactersInRange: