victorchee

git config --global http.proxy 'socks5://127.0.0.1:1080' 
git config --global https.proxy 'socks5://127.0.0.1:1080'

victorchee

[UIView animateWithDuration:.1 delay:0 options:UIViewAnimationOptionRepeat | UIViewAnimationOptionAutoreverse | UIViewAnimationOptionAllowUserInteraction animations:^{
                cell.transform = CGAffineTransformMakeRotation(.02);
    } completion:nil];

victorchee

// 去除所有返回按钮文字
UIBarButtonItem.appearance().setBackButtonTitlePositionAdjustment(UIOffsetMake(-100, 0), for:UIBarMetrics.default)

victorchee

BOOL animating;
BOOL animationPending;
BOOL animationComplete;

- (void)rotateWithOptions:(UIViewAnimationOptions)options {
    NSTimeInterval fullRotationInterval = 4.0;
    [UIView animateWithDuration:fullRotationInterval/4.0 delay:0 options:options animations:^{
        self.musicIconImageView.transform = CGAffineTransformRotate(self.musicIconImageView.transform, M_PI_2);
    } completion:^(BOOL finished) {
        if (animating) {

victorchee

#import <openssl/dsa.h>
#import <openssl/pem.h>

- (NSString *)DASSignatureStringWithPublicKey:(NSString *)publicKey privateKey:(NSString *)privateKey {
    const char *message = [self UTF8String];
    
    BIO *publicBIO = BIO_new_mem_buf((void *)[publicKey UTF8String], -1);
    DSA *publicDSA = PEM_read_bio_DSA_PUBKEY(publicBIO, NULL, NULL, NULL);
    BIO_free_all(publicBIO);
    BIO *privateBIO = BIO_new_mem_buf((void *)[privateKey UTF8String], -1);

victorchee

/// 扩展UIView增加抖动方法
    ///
    /// - Parameters:
    ///   - direction: 抖动方向（默认是水平方向）
    ///   - times: 抖动次数（默认6次）
    ///   - interval: 每次抖动时间（默认0.2秒）
    ///   - delta: 抖动偏移量（默认4）
    ///   - completion: 抖动动画结束后的回调
    public func shake(direction: ShakeDirection = .horizontal, times: Int = 6, interval: TimeInterval = 0.2, delta: CGFloat = 4, completion: (() -> Void)? = nil) {
        //播放动画

victorchee

// 放射渐变
 CGContextRef context = UIGraphicsGetCurrentContext();
        
size_t num_locations = 2;
CGColorSpaceRef rgb = CGColorSpaceCreateDeviceRGB();
CGFloat components[8] = {1,1,1,1, // 中心颜色（r， g， b， alpha）
                     .2,.2,.2,1 // 边缘颜色};
CGFloat locations[2] = {0,1};
        
CGGradientRef gradient = CGGradientCreateWithColorComponents(rgb, components, locations, num_locations);

victorchee

#import <sys/sysctl.h>
#import <mach/mach.h>

+ (double)getAvailableMemory
{
    vm_statistics_data_t vmStats;
    mach_msg_type_number_t infoCount = HOST_VM_INFO_COUNT;
    kern_return_t kernReturn = host_statistics(mach_host_self(),
                                               HOST_VM_INFO,
                                               (host_info_t)&vmStats,

victorchee

[[[NSURLSession sharedSession] downloadTaskWithURL:[NSURL URLWithString:@"https://alpha.migufun.com:38081/alpha/manifest.plist"] completionHandler:^(NSURL * _Nullable location, NSURLResponse * _Nullable response, NSError * _Nullable error) {
        NSDictionary *plist = [[NSDictionary alloc] initWithContentsOfURL:location];
        NSString *version = plist[@"items"][0][@"metadata"][@"bundle-version"];
        
        NSString *currentVersion = [NSBundle mainBundle].infoDictionary[@"CFBundleShortVersionString"];
        if ([version compare:currentVersion options:NSNumericSearch] == NSOrderedDescending) {
            // 需要升级
            NSURL *url = [NSURL URLWithString:@"itms-services://?action=download-manifest&url=https://alpha.migufun.com:38081/alpha/manifest.plist"];
            dispatch_async(dispatch_get_main_queue(), ^{
                [[UIApplication sharedApplication] openURL:url];

victorchee

NSURL *soundURL = [[NSBundle mainBundle] URLForResource:@"shake" withExtension:@"wav"];
SystemSoundID soundID;
AudioServicesCreateSystemSoundID((__bridge CFURLRef _Nonnull)(soundURL), &soundID);
AudioServicesPlaySystemSound(soundID);