Category Archives: Mobile

How to generate **.cer** and **.p12** file for iOS push notification

Posted on September 9, 2017 by

Every time I created a new app with push notifications, iOS, I'm sure I've got everything right and then something refused to work. So this time I'm writing it down so I can't possibly get it wrong again.  Generally, … Continue reading →

Posted in iOS, Mac, Mobile | Tagged , , , | 1 Comment

VI常用命令

Posted on August 25, 2017 by

vi / vim 删除以及其它命令 Commands Comments dd 删除一行 d$ 删除以当前字符开始的一行字符 D 与d$同义 d 回车删除2行 ndd 删除以当前行开始的n行 dw 删除以当前字符开始的一个字 ndw 删除以当前字符开始的n个字 d) 删除到下一句的开始 d} 删除到下一段的开始 ndw 或 ndW 删除光标处开始及其后的 n-1 个字符。 d0 删至行首。 d$ 删至行尾。 ndd 删除当前行及其后 n-1 行。 x 或X … Continue reading →

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Vim notes

Posted on August 21, 2017 by

Column selection: Ctrl + V Replace Replace all A with B %s/A/B Find in current line find < f< Remove content between 2 characters For example, remove the content between [ and ]: [routeName] {ExampleRoutes[routeName].name}</Text Vim commands(go to the beginning … Continue reading →

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React Study

Posted on August 21, 2017 by

Learn Redux with Wesbos https://courses.wesbos.com/account/access/59994e0dac34560554c277a8 const router = ( ) render(router, document.getElementById(‘root’));

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How to use Android Battery Historian

Posted on June 27, 2017 by

1. Install Docker: https://docs.docker.com/docker-for-mac/install/#install-and-run-docker-for-mac 2. Run Docker docker run -p 5001:9999 gcr.io/android-battery-historian/stable:3.0 –port 9999 3. Fetch battery report To obtain a bug report from your development device running Android 7.0 and higher: $ adb bugreport bugreport.zip For devices 6.0 and … Continue reading →

Posted in Android, Mac, Mobile | 1 Comment

Android perssions group

Posted on June 9, 2017 by

https://developer.android.com/guide/topics/permissions/requesting.html All dangerous Android system permissions belong to permission groups. If the device is running Android 6.0 (API level 23) and the app’s targetSdkVersion is 23 or higher, the following system behavior applies when your app requests a dangerous permission: … Continue reading →

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Java Effective

Posted on June 7, 2017 by

Chapter 2. Creating and Destroying Objects Item 1: Consider static factory methods instead of constructors Item 2: Consider a builder when faced with many constructor parameters Item 3: Enforce the singleton property with a private constructor or an enum type … Continue reading →

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Calculate LOC by shell script

Posted on June 4, 2017 by

Navigating to you project folder, run(python project) find . -name “*.py” |xargs grep -v “^$”|wc -l If it is a Objective-C project, the the script should look like this: find . -name “*.m” -or -name “*.h” |xargs grep -v “^$”|wc … Continue reading →

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Android context work scope

Posted on June 2, 2017 by
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Adding an existing project to GitHub using the command line

Posted on June 2, 2017 by

Create a new repository on GitHub. To avoid errors, do not initialize the new repository with README, license, or gitignore files. You can add these files after your project has been pushed to GitHub. Open Terminal. Change the current working … Continue reading →

Posted in git, Mac, Mobile | Leave a comment