Remember the last time we opened the Codereview assembly someone raised " nsdateformatter *dateformatter = [[NSDateFormatter alloc] init]; Go to get NSDate or nsstring (date) "Long or high frequency call this method will appear the page operation
In iOS development, it is often necessary to add the UITableView drop-down refresh feature, which can be easily implemented with Uirefreshcontrol.UirefreshcontrolBelow is the Uirefreshcontrol's header
1,nullpointer--that is, the use of an object has not been initialized to cause the problem Under what circumstances is it generally easy to appear?(1) parent window + child window appears at the same time, the parent window for some reason, the
Long time has not updated the blog, watching a lot of people will update the blog every week, and then look at themselves, found that I do not have this hobby ah! It's a shame .... So we have to learn from everyone. Today share with you a useful
After the application occurs crash to see log, to determine where the problem is, but once the application is published, it is necessary to find a way to the user's crash log analysis.So to crawl log after the occurrence of crash, and then upload to
Directory (?) [+]
Using the Logcat command
Filtering log output
Control log Output format
View available Log buffers
View stdout and stderr
Logcat Command List
The Android log system provides the ability to record
May 6 afternoon, in Beijing, China Film director Center Zhou Hongyi with Pan Shiyi, Ren Zhiqiang, Wang held a you Lennon I Lennon all the warmth of nostalgia old friends. The release of 3 mobile phone prototype without the concept of mobile phones,
I. Type of animationAndroid animation consists of four types: alpha, scale, translate, rotateIn the XML configuration file
Alpha
Gradient Transparency Animation effect
Scale
Gradient Dimension Stretch
In the imagination of most mobile entrepreneurs, the well-crafted app was finished, and after the app Store/google Play, it was the start of the excitement, the endless stream of users downloading it, and the ability to continually improve the
ANDROID3.0 provides a Drag/drop framework that allows you to drag and drop a view into another view in the current layout using drag-and-drop.steps to implement drag and dropFirst, let's take a look at the drag-and-drop process, from the official
In the past when using the ListView or GridView, if you want to add a friendly reminder without content, it is in the same location of the ListView or GridView, add a ImageView, Then through the control of the Visibile set to View.visible or
First, the function:1.Android WiFi connection and disconnect, save the connection IP and port.2.WIFI Control of 3 relays3.16 Binary send instructions, can be sent single and multiple, separated by commas.4.16 Binary ReceiveIf you need special
Mainly for the Geek College address book items, knowledge points of the collation ... Click to download code1, the implementation of login and password input box is empty, is not available stateImplementation: Using the method of adding observers,
No Resource found that matches the given name ' Theme.AppCompat.Light ' perfect solutionFirst of all, the problem arises from the lack of Theme.AppCompat.Light, which is a topic that exists in the ANDROID\SUPPORT\APPCOMPAT-V7 support library, not
Today, I'll talk about network requests during iOS development.About the importance of network requests I don't think I need to say more. For mobile clients, the importance of the network is self-evident. Common network requests have synchronous get,
New Empty ProjectAdd a MainstoryboardSet Startup item to MainstoryboardOverriding the window method of Appdelegatepublic override UIWindow Window { get; Set; }Drag 3 View Controllers controls from the toolbox, and set the identity class
Apple recently released the APP Analytics statistics Platform in itunesconnect, which provides data that is not statistically available from the existing Friends League statistics platform and its own statistical platform, with its own unique
The first chapter of Android development environment construction
Development Tools:Adt-bundle-windowsHttp://pan.baidu.com/s/1wIgFW
Configuring Environment variablesD:\Program Files (x86)
I. Type of animationAndroid animation consists of four types: alpha, scale, translate, RotateIn the XML configuration file
Alpha
Gradient Transparency Animation effect
Scale
Gradient Dimension Stretch
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