hanfengs

/**
 @return 如果版本号相等返回0，第一个版本号高于第二个，返回1，否则返回 -1.
 */
- (NSInteger)compareVersion:(NSString *)version1 andVersion:(NSString *)version2{
    NSInteger res = 0;
    NSArray *arry1 = [version1 componentsSeparatedByString:@"."];
    NSArray *arry2 = [version2 componentsSeparatedByString:@"."];
    
    NSInteger idx1 = 0;
    NSInteger idx2 = 0;

hanfengs

/**
 *  截取URL中的参数
 *
 *  @return NSMutableDictionary parameters
 */
+ (NSMutableDictionary *)getURLParameters:(NSString *)urlStr {
    
    // 查找参数
    NSRange range = [urlStr rangeOfString:@"?"];
    if (range.location == NSNotFound) {

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//https://quxue-data.oss-cn-beijing.aliyuncs.com/scene_course/reading/baowei/reading12-3-73.json

                NSURL *url = [NSURL URLWithString:jsonUrl];
                NSLog(@"Scheme: %@", [url scheme]);//https
                NSLog(@"Host: %@", [url host]);//https
                NSLog(@"Port: %@", [url port]);//null
                NSLog(@"Path: %@", [url path]);//scene_course/reading/baowei/reading12-3-73.json
                NSLog(@"Relative path: %@", [url relativePath]);//scene_course/reading/baowei/reading12-3-73.json
                /*
                 Path components as array: (

hanfengs

/*
 
 阿里云出于安全考虑，从2018年8月13日起，直接使用OSS访问域名，从互联网访问OSS上的网页类型文件(mimetype为text/html，扩展名包括htm、 html、jsp、plg、htx 和stm)时，Response Header中会自动加上 Content-Disposition:'attachment=filename;'。即从浏览器访问网页类型文件时，会以附件 形式进行下载。
 
 用户使用自有域名访问OSS的请求，Response Header中不会加上此信息。如何使用自有域名访问OSS，请参考OSS帮助文档“绑定自定义域名”。
 
 表现的现象是， web中下载文件时,我们一般设置Content-Disposition告诉浏览器下载文件的名称,是否在浏览器中内嵌显示.
 Content-disposition: inline; filename=1502849449726.jpg表示浏览器内嵌显示一个文件
 Content-disposition: attachment; filename=1502849449726.xlsx表示会下载文件,如火狐浏览器中
 

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    NSString *jsonPath = [[NSBundle mainBundle] pathForResource:@"json" ofType:@"json"];
    NSData *data = [NSData dataWithContentsOfFile:jsonPath];
    NSError *error = nil;
    id result = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
    NSLog(@"\n%@====%@", [error localizedDescription], result);
    
    TSSentencePracticeResultModel *resu = [TSSentencePracticeResultModel yy_modelWithJSON:result];
    NSLog(@"====%@", resu);
    
    self.dataArr = [self checkDataArr:resu.result.wordPracticeList];

hanfengs

    UISwipeGestureRecognizer *recognizer = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(handleSwipeFrom:)];
    [recognizer setDirection:(UISwipeGestureRecognizerDirectionLeft)];
    [self.view addGestureRecognizer:recognizer];
    

- (void)handleSwipeFrom:(UISwipeGestureRecognizer *)recognizer{
    if(recognizer.direction == UISwipeGestureRecognizerDirectionDown) {
        NSLog(@"swipe down");
    }
    if(recognizer.direction == UISwipeGestureRecognizerDirectionUp) {

hanfengs

#pragma mark - 获取这个字符串ASting中的所有abc的所在的index
- (NSMutableArray *)getRangeStr:(NSString *)text findText:(NSString *)findText
{
    
    NSMutableArray *arrayRanges = [NSMutableArray arrayWithCapacity:3];
    
    if (findText == nil && [findText isEqualToString:@""])
    {
        
        return nil;

hanfengs

早上地铁的时间就看了这一篇文章《方舟编译器的荣光和使命》，总结一下：

安卓的四大问题

1；java虚拟机+编译器+解释器，应用安装或者空闲编译，在手机上生成二进制的机器码

2；额外的JNI开销，用于和C/C++代码交互，

3；代码优化空间有限，为了防止生态过于碎片化，为第三方开放了简单的优化

hanfengs

UIButton category

-----------------------------------------.h
// 定义一个枚举（包含了四种类型的button）
typedef NS_ENUM(NSUInteger, GLButtonEdgeInsetsStyle) {
    GLButtonEdgeInsetsStyleTop, // image在上，label在下
    GLButtonEdgeInsetsStyleLeft, // image在左，label在右
    GLButtonEdgeInsetsStyleBottom, // image在下，label在上
    GLButtonEdgeInsetsStyleRight // image在右，label在左
};

hanfengs

        UIImageView *lastIV = nil;
        self.ivArrM = [NSMutableArray array];
        for (NSInteger i = 0; i < 4; i++) {
            UIImageView *iv = [[UIImageView alloc] init];
            [self addSubview:iv];
            [iv mas_makeConstraints:^(MASConstraintMaker *make) {
                if (isPad) {
                    make.width.mas_equalTo(163);
                }else{
                    make.width.equalTo(self).multipliedBy(0.5).offset(-IVMragin16 * 1.5);