智慧光-优快云博客

原创 pm2 开机自启动

step1: pm2 start npm --name “projectName” – run startstep2: pm2 saveIt will show as follow：[PM2] Saving current process list…[PM2] Successfully saved in /root/.pm2/dump.pm2step3: pm2 startup

2022-08-18 22:05:10 425

原创 programming without IDE

http://code.geeksforgeeks.org/

2017-01-19 14:33:13 683

原创 deviceToken value always is "32bytes"

在func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) 获取到deviceToken,值未nil，deviceToken发现值为”32bytes”解决方法：let deviceTokenString = deviceToken

2017-01-03 11:02:45 1023

原创 download php file instead of executing user group

solution: change user and group of file or folderfor example: chown -R userName:groupName folderNamechown -R root:root folderName

2016-12-30 07:34:19 652

原创 Property with 'retain (or strong)' attribute must be of object type

RongIMKit.framework/Headers/RCMessageModel.h:94:30: Unknown type name ‘RCReadReceiptInfo’ (2)RongIMKit.framework/Headers/RCMessageModel.h:94:1: Property with ‘retain (or strong)’ attribute must be of o

2016-12-29 23:47:00 1242

原创 duplicate symbols for architecture x86_64 and No such file or directory

two errors: 1: duplicate symbols for architecture x86_64 2:error: cannot parse the debug map for “/Users/— Library/Developer/Xcode/DerivedData/ProjectName- dejxrzrmfgomxxcrzloplmsozads/Build/Pro

2016-12-29 12:11:10 656

原创 Ambiguous reference to member 'dataTask(with:completionHandler:)'

Ambiguous reference to member ‘dataTask(with:completionHandler:)’let request = NSMutableURLRequest(url: URL(string: “Your API URL here” ,param: param))!, cachePolicy: .useProtocolCachePolicy,

2016-12-29 09:45:24 1951

原创 Expression was too complex to be solved in reasonable time; consider breaking up the expression into

Xcode 7 works fine if calculate the value of -60*60*24*2-60*60 but there is an error on Xcode 8 which says Expression was too complex to be solved in reasonable time; consider breaking up the expressi

2016-12-29 09:12:42 1690

原创 swift 3, swift2

Swift3:DispatchQueue.main.async(execute: { })Swift2: dispatch_async(dispatch_get_main_queue(), { })TimeInterval–swift3 NSTimeInterval–swift2fileprivate-swift3 private-swift2D

2016-12-21 12:18:58 1160

转载 Convert to Current Swift Syntax Failed: Could not find test host

Method: Select the Xcode project in the lefthand browser. Click on your test target in the Project’s General tab. Disclose “YorrPorojectNameTesting”. In my project the “Host Application” pulldown bu

2016-12-21 11:35:13 1481

原创 xcodebuild' requires Xcode, but active developer directory '/Library/Developer/CommandLineTools' is

method: select Xcode version in Command Line Tools in Location(Click Xcode and then Preferences)Before: After:

2016-12-20 06:57:52 4502

转载 how to change Scheme name

Choose “Edit Scheme” from the “Product” menu. Click on the “Manage Schemes…” button Select the scheme whose name you wish to change Press the “Return” key It will select the name of the scheme and

2016-12-20 05:51:19 523

原创 Unable to create directory wp-content/uploads/2016/12. Is its parent directory writable by the serve

method: first : chmod 777 wp-content/uploads/ and then: chmod 755 wp-content/uploads/ to make you can upload

2016-12-14 11:43:44 3639

原创 iBeacon develop

Beacon Vendor Default UUID Open Beacon AA6062F0-98CA-4211-8EC4-193EB73CEBE6 Estimote B9407F30-F5F8-466E-AFF9-25556B57FE6D Radius Networks 2F234454-CF6D-4A0F-ADF2-F4911BA9FFA6 Beacon Inside F

2016-12-12 02:24:37 756

原创 can not find difinition of a class

the library already add in Xocde, you need import the library in the sourecode. but if by setting Xocde , you may not need to import the library

2016-12-06 01:31:52 447

原创 AFNetworking required by Podfile AFNetworking (= 2.6.0) required by Podfile.lock

AFNetworking required by Podfile AFNetworking (= 2.6.0) required by Podfile.locksolution: remove or rename Podfile.lock and run pod install again if AFNetworking (= 2.6.0) required by other library,

2016-12-05 23:53:13 1197

原创 image not found

the app canrun with Xcode. but if just click the app in simulator, it can not run and no error clue. If run in real device, xcode will give the following message: dyld: Library not loaded: @rpath/Vime

2016-12-05 12:09:39 919

原创 method to solve the problem : Could not cast value of type 'NSManagedObject_ to

Set module!!!

2016-11-30 12:41:17 686

原创 tableview cells after several cells can not selected

Description: first top several table cells can be selected, but after tableview cells after several cells can not selectedReason: table view height is too smallSolution: set table view height bigge

2016-11-30 00:25:49 397

转载 Why is NSNotification its observer called multiple times

a likely cause is that your viewcontrollers are over-retained and not released when you think they are. This is quite common even with ARC if things are over-retained. So, you think that you have only

2016-11-26 07:49:10 584

转载 how to quit webview player

UIMoviePlayerControllerDidExitFullscreenNotification NSNotification not working in iOS 8UIWebView上播放视频，获取全屏播放事件／退出全屏播放之前的办法： [[NSNotificationCenter defaultCenter]addObserver:selfselector:@selector(

2016-11-26 04:39:58 561

原创 can not remove app on iphone simulator?

method to fix it: Click the simulator to active it, then select hardware in simulator tools followed by clicking “Touch pressure”. In the “Touch pressure” option, click “Shallow press” to make it not

2016-11-18 23:11:10 381

原创 cellForRowAtIndexPath not called but numberOfRowsInSection called

one reason: if tableview exist in a UIView, NOT uicontroller, and this uiview is hidden will cause this problem

2016-11-06 01:55:33 731

原创 a case of table cell cover other cell

the reason is heightForRowAtIndexPath is smaller to the hight of custom table cell

2016-11-05 22:57:02 310

原创 one method to resolve table cell can not be selected

func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat { return (CGFloat(106)) // MUST Return CGFloat type value //Xcode 8 even not g

2016-11-03 04:23:04 448

原创 how to remove 1px line at UINavigationBar

let navBar:UINavigationBar=UINavigationBar()navBar.frame=CGRectMake(0, 0, view.frame.width, 80)navBar.shadowImage = UIColor.whiteColor().as1ptImage()navBar.setBackgroundImage(UIColor.whiteColor().as

2016-11-01 05:41:20 587

原创 how to set custom navigator title

Method is that navigationItem.titleView uses UIView, and this UIView add custom title. example: var containerView = UIView() containerView.frame = CGRectMake(30, 30, 400, 50) var titlevi

2016-10-28 02:10:09 293

原创 how to dismiss UIAlertController once clicking outside itself?

func tapColor(sender: UIGestureRecognizer) { let paraList = [ "Grey","Black","Brown" ] func actionSheetHandlerParameters(para : String) { ColorLabel.text = para Colo

2016-10-27 02:20:52 573

转载 self.navigationItem.titleView不居中

为什么self.navigationItem.titleView有时候不能居中呢答一：UINavigationBar automatically centers its titleView as long as there is enough room. If the title isn’t centered that means that the title view is too wide to

2016-10-21 06:12:58 692

原创 how to pase JSON in Swift

http://roadfiresoftware.com/2015/10/how-to-parse-json-with-swift-2/Example: { “blogs”: [ { “needspassword”: true, “id”: 73, “url”: “http://remote.b

2016-10-19 03:55:56 508

原创 FCM issues (Firebase Cloud Message)

Check this video, youtube.com/watch?v=VpbNFIY1qJ0 time 13:45. They said that if you set Info.plist FirebaseAppDelegateProxyEnabled to NO you should call “setAPNSToken” and “appDidReceiveMessage (http:

2016-10-19 03:45:20 1445

原创 iOS issues

1: for devices running iOS 10 and above, you must assign your delegate object to the UNUserNotificationCenter object to receive display notifications, and the FIRMessaging object to receive data messag

2016-10-19 03:08:21 635

原创 Unable to connect with FCM. Optional(Error Domain=com.google.fcm Code=501

Solution: open push notification and in backgroud mode open remote notification in Xcode 8iOS 9.3// [START connect_to_fcm] func connectToFcm() { //FIRMessaging.messaging().connect { (erro

2016-10-19 02:38:31 1446

原创 NSObject in swift2 can present AnyHashable in swift3

AnyHashable is new structure in Swift 3

2016-10-19 02:16:47 757

原创 no valid 'aps-environment' entitlement string found for application xcode 8

Solution: Need open Push notification at Capabilities tab in XcodeOnce open push notification, You will see steps : Add push notifications entitlement to your entitlement file

2016-10-16 06:35:12 1134

转载 swift jump page ways

1 var sb = UIStoryboard(name: “Main”, bundle:nil) var vc = sb.instantiateViewControllerWithIdentifier(“ChooseViewController”) as ChooseViewController self.presentViewController(vc, animated:true, c

2016-10-14 02:43:28 352

原创 how to search special string in direction

grep -rn -w “The StringYou want to search” *means search all files in current direction -w mean search the whole string, not string which includes the search string

2016-10-13 23:05:08 300

原创 split string with character in swift

let splitChar : String = ” ” let lanArray : [String] = lans.componentsSeparatedByString(splitChar)

2016-10-12 04:26:16 312

原创 Instance member cannot be used on type

reason: The error is because the type tries to access the self property before self was initialized (initialization happens after defining the values for properties). Solution: define first before in

2016-10-08 11:19:27 7659