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Author Archives: Tang
Xcode instruments
 The two columns worth noting in Instruments are # Persistent and # Transient. The Persistent column keeps a count of the number of objects of each type that currently exist in memory. The Transient column shows the number of … Continue reading
Views vs. layers
A layer is a simple model class that exposes a number of properties to represents some image-based content. Every UIView is backed by a layer, so you can think of layers as the lower-level behind the scenes class behind your … Continue reading
Xcode tips and ticks
Faster Testing When using TDD you can work more quickly by running a subset of tests – press ⌃⌥⌘G to re-run only your last test, or ⌘-click several tests to run only them. Opening Xcode If you’re in a folder … Continue reading
gitsubree usage
Basic commands about subtree git subtree add –prefix=<prefix> <commit> git subtree add –prefix=<prefix> <repository> <ref> git subtree pull –prefix=<prefix> <repository> <ref> git subtree push –prefix=<prefix> <repository> <ref> git subtree merge –prefix=<prefix> <commit> git subtree split –prefix=<prefix> [OPTIONS] [<commit>] 1. Add … Continue reading
CommentPlus for Swift Func
Usage reference: https://zhihuitang.github.io/2019/01/13/CommentPlus-for-Swift-Func.html Download the Xcode extension from here Unzip and double click the extension CommentPlus.app to install the extension In Xcode, put the cursor on the upper line of func, then select Xcode menu bar: Editor -> CommentGenerator -> … Continue reading
Charles Proxy in Android
1. SSL Proxy/Charles + Android trouble https://stackoverflow.com/questions/17823434/ssl-proxy-charles-and-android-trouble/31945622#31945622 2. Enable SSL Proxy for Nougat+ Update your AndroidManifest.xml application section with networkSecurityConfig.xml <application android:name=”AppName” android:icon=”@mipmap/ic_launcher” android:label=”@string/app_name” android:networkSecurityConfig=”@xml/network_security_config”> Add network_security_config.xml file to your xml resource folder app/src/main/res/xml/network_security_config.xml <?xml version="1.0" encoding="utf-8"?> <network-security-config> <base-config> <trust-anchors> … Continue reading
Intermediate iOS Debugging
1. Stop when exception 1.1 Open Breakpoint navigator (Cmd + 8) 1.2 Add Exception Breakpoint  1.3 Keep default values  1.4 Move breakpoint to User level  2. Edit breakpoint Edit Breakpoint  Add Debugger Command:  We will … Continue reading