开发的细碎点

1.if (![selfgestureRecognizers]) {

        self.userInteractionEnabled =YES;

        UITapGestureRecognizer *tap = [[UITapGestureRecognizeralloc]initWithTarget:selfaction:@selector(tap)];

        [selfaddGestureRecognizer:tap];

    }

2.

- -(NSArray *)userNameArray{

    if (_jobDict) {

        if (!_userNameArray) {

            _userNameArray = [[NSMutableArray alloc]init];

            NSArray *keys = [_jobDictallKeys];

            keys = [keys sortedArrayUsingComparator:^NSComparisonResult(id obj1,id obj2) {

                return [obj1compare:obj2options:NSNumericSearch];

            }];

            for (NSString *keyin keys) {

                [_jobNameArrayaddObject:[_jobDictobjectForKey:key]];

            }

        }

        return_jobNameArray;

    }else{

        return@[@"暂无选项"];

    }

}

//将数组中的元素按降序排列

3.

//通过索引得到字典中的value 字段

- (NSString *)jobNameWithIndex:(NSNumber *)index{

    NSString *jobName;

    if (_jobDict) {

        jobName = [_jobDictobjectForKey:index.stringValue];

    }else{

        jobName = nil;

    }

    return jobName;

}

//通过字段名获取得到字典索引

- (NSNumber *)indexOfJobName:(NSString *)job_str{

    NSInteger index =0;

    if (_jobNameArray) {

        index = [_jobNameArrayindexOfObject:job_str];

    }

    if (index ==NSNotFound) {

        index = 0;

    }

    return [NSNumbernumberWithInteger:index];

}

4.//根据字体获取宽高

- (CGSize)getSizeWithFont:(UIFont *)font constrainedToSize:(CGSize)size{

   CGSize resultSize =CGSizeZero;

   if (self.length <=0) {

       return resultSize;

    }

    resultSize = [selfboundingRectWithSize:size

                                   options:(NSStringDrawingUsesFontLeading |NSStringDrawingUsesLineFragmentOrigin)

                                attributes:@{NSFontAttributeName: font}

                                   context:nil].size;

    resultSize =CGSizeMake(MIN(size.width, ceilf(resultSize.width)),MIN(size.height, ceilf(resultSize.height)));

   return resultSize;

}

- (CGFloat)getHeightWithFont:(UIFont *)font constrainedToSize:(CGSize)size{

   return [selfgetSizeWithFont:fontconstrainedToSize:size].height;

}

5.使用runtime kvc 进行字典转模型。