Programmer Group

1.Ruby installation. Note: do not use the latest 2.2 or 2.3 version of ruby. Some components may not be installed yum -y install openssl-devel gcc wget https://ruby.taobao.org/mirrors/ruby/2.1/ruby-2.1.7.tar.gz tar zxf ruby-2.1.7.tar.gz cd ruby-2.1.7 ./configure --prefix=/usr/local/ruby2.1.7 make && make install echo ...

1. Wake up phenomenon of mobile assistant in the background com.qihoo.appstore and com.tencent.android mainly wake up in the background through JobScheduler and SyncManager events. Because most of the previous broadcast events, such as network static broadcast and application installation static broadcast, have been canceled b ...

Microsoft should implement some simple functions for INotifyPropertyChanged. For example, in automatic properties, you only need to specify {get; set; notify;} {get; set; notify;} {get; set; notify;}. I think it makes sense to do so. Or do you have any complications? Can we implement "notification" and other functions in propertie ...

react cross domain access background, default is cross domain problems, and fire arc and Google browser, cross domain problem display is not the same Google browser is as follows: The status here is 200, but there is no information in Response, as shown below   However, the description of this problem in fire arc browser is much clearer, Fir ...

Data download: http://www.highcharts.com/download Download File: Open after decompression: We can copy all the files under js to our project, for example, I put them in the highcharts folder 1. Import the highcharts file: <script type="text/javascript" src="../js/jquery-1.8.3.js"></script> <!--highchart ...

1. Add dependency dependencies { compile 'com.github.bumptech.glide:glide:3.7.0' compile 'com.android.support:support-v4:23.2.1' } 2. Usage ImageView imageView = (ImageView)findViewById(R.id.imageView) Glide.with(this) .load(url)//Picture address .crossFade()//Open animation //.dontAnimate()//Close ...

Regular expression is the way to deal with strings. It can perform specific character handlers such as find, delete, and replace. Common commands grep, awk, sed [: alunm:] represents English case characters and numbers, i.e. 0-9 A-Z a-z [: alpha:] represents any English case letter A-Z A-Z [: blank:] represents the space b ...

introduce Learn some basic knowledge first @Binds @IntoSet @IntoMap @IntoXXXX Let's first introduce how to design MVVM when it is not dagger2 If you don't know how to use databinding, the following video is recommended Android Data Binding practice - Beginner Level Android Data Binding practice - Advanced Let's p ...

In normal development, we often have the requirement that each Item layout should be distinguished by using a split line in the layout, as shown in the following code: The effect is shown in Figure 1-1 <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" ...

  Before Android 4.4, our application couldn't change the color of the status bar of the mobile phone, as shown in the figure above. In order to provide better interface interaction, google started to provide a method to set the immersive status bar in Android 4.4.2. The actual effect is the transparent status bar, and then ...