• iOS Http断点续传浅析

    iOS iOS

    http实现断点续传的关键地方就是在httprequest中加入“Range”头。

    //设置Range头，值:bytes=x-y;x:开始字节，y:结束字节，不指定则为文件末尾
[request addValue:@"bytes …
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  • Method hook

    iOS iOS 
    typedef IMP *IMPPointer;

BOOL class_swizzleMethodAndStore(Class class, SEL original, IMP     replacement, IMPPointer store) {  
    IMP imp = NULL;  
    Method method = class_getInstanceMethod(class, original);  
    if (method) {  
        const char *type = method_getTypeEncoding(method);  
        imp = class_replaceMethod(class, original, replacement, type);  
        if (!imp) {  
            imp = method_getImplementation(method);  
        }  
    }  
    if (imp && store) { *store = imp; }  
    return …
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