LuaNavController is a simple UITableView-based CodeFlow application for iOS, with a list view and a detail view, entirely written in Lua.
LuaNavController illustrates the various ways to use live resource update in CodeFlow. It includes resources of various types: images, plist and interface builder xib files.
All resources are truly live: if you edit any of them or replace it with a compatible file (try dragging a file from the finder over a resource in the files list), you see right away the change in the application.
You can also do live-update with the Interface Builder file (xib file) for the DetailViewController. When you edit the file in Xcode and save it, a few seconds later the changes are propagated to you app and you can see them in the real context.
In the code, this live nib update is achieved by overwriting the DetailViewController loadView method and instantiating the nib manually in the corresponding setter. Have a look at the code in DetailViewController and you will see that the corresponding processing is really simple.
This application also contains examples of inter-objects notifications.
For example, CheckerTableViewController defines a setter _tableItems for handling the updates of the plist resource and in the setter function, it posts a custom message 'data_table_updated'.
DetailViewController subscribes to this message in its viewDidAppear method, so its updateDisplay is called when the data table is changed.
The CheckerTableCell class is a UITableViewCell subclass that adds a button to the basic iOS table cell. CheckerTableCell is autolayout-based and defines a set of constraints in its updateConstraints method.
In this case, live-update is simply achieved by calling self:setNeedsUpdateConstraints() after each update of the module code, or when the tableView row height is changed.
A Mac with Celedev CodeFlow version 0.9.18 or later.
Works on iPhone or iPad, running iOS 7.1 or later.
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Open the CodeFlow project for this sample application.
This will automatically update the associated Xcode project, so that paths and other build settings are correctly set for your environment. -
Open the associated Xcode project. You can do this in CodeFlow with the menu command
Program -> Open Xcode Project. -
Run the application on a device or in the simulator.
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In CodeFlow, select the application in the
Targetpopup menu in the project window toolbar. The app stops on a breakpoint at the first line of the Lua program. -
Click on the
Continuebutton in the toolbar (or use the CodeFlow debugger for stepping in the program) -
Enjoy the power of live coding with CodeFlow
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Some libraries / header files in the sample app Xcode project are missing
⇒ Fix: open the corresponding CodeFlow project, and CodeFlow will update the associated Xcode project, so that paths and libraries are correctly set.
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Link errors (missing symbols) occur when I compile the Xcode project
Most probable cause: if you are using Xcode 5 (and thus iOS 7.1 SDK), these errors occur because the sample app is configured for the iOS 8 SDK.
⇒ Fix: In the CodeFlow project, use the bindings library for the iOS 7.1 SDK in replacement of the one for the iOS 8 SDK
- Download CodeFlow bindings for iOS 7.1 SDK, and double-click on the .luabindings library file to install it in codeFlow;
- If needed, select the iOS 7.1 SDK library in CodeFlow project (menu
Program -> Select SDK Library -> iOS 7.1 SDKor using the contextual menu on the current iOS External Lib); - CodeFlow will then update the associated Xcode project so that it links with the iOS 7.1 SDK bindings libraries.
This application is provided under the MIT License (MIT)
Copyright (c) 2014-2015 Celedev.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.