好程序員-ios開發(fā)小知識(shí)點(diǎn)(一)(已修改)
2025-08-16 15:23 本頁面
【正文】 獲取系統(tǒng)語言設(shè)置NSUserDefaults *userDefault = [NSUserDefaults standardUserDefaults]。NSArray *languages = [userDefault objectForKey:@AppleLanguages]。NSString *preferredLang = [languages objectAtIndex:0]；緩存路徑下文件大小 (unsigned long long int) cacheFolderSize{NSFileManager *_manager = [NSFileManager defaultManager]。NSArray *_cachePaths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory,NSUserDomainMask, YES)。NSString *_cacheDirectory = [_cachePaths objectAtIndex:]。NSArray *_cacheFileList。NSEnumerator *_cacheEnumerator。NSString *_cacheFilePath。unsigned long long int _cacheFolderSize = 。_cacheFileList = [ _manager subpathsAtPath:_cacheDirectory]。_cacheEnumerator = [_cacheFileList objectEnumerator]。while (_cacheFilePath = [_cacheEnumerator nextObject]){NSDictionary *_cacheFileAttributes = [_managerfileAttributesAtPath:[_cacheDirectory stringByAppendingPathComponent:_cacheFilePath]traverseLink:YES]。_cacheFolderSize += [_cacheFileAttributes fileSize]。}// 單位是字節(jié)return _cacheFolderSize。}Popover push 時(shí) Frame無法改變解決辦法在popover中的ViewController中實(shí)現(xiàn)： (void)viewWillAppear:(BOOL)animated{CGSize size = CGSizeMake(320, 480)。 // size of view in popover = size。[super viewWillAppear:animated]。}tableview滑動(dòng)導(dǎo)致NSTimer和委托回調(diào)停止解決辦法/ /請(qǐng)求回調(diào)NSURLRequest * 請(qǐng)求 = ...scheduleInRunLoop ：[ NSRunLoop currentRunLoop ]forMode ：NSRunLoopCommonModes ][ 連接開始] / /定時(shí)器回調(diào)NSTimer * updateTimer = [NSTimer scheduledTimerWithTimeInterval：：自我選擇：選擇（updatePencent）的UserInfo：無重復(fù)：是]。* NSRunLoop主要= [NSRunLoop currentRunLoop][主要addTimer：updateTimer forMode：NSRunLoopCommon
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