update: images
134
README.md
@ -11,7 +11,7 @@ The result will be a Kotlin Multiplatform project targeting Android and iOS.
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## Set up an environment
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## Set up an environment
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> **Important**. You will need a Mac with macOS to write and run iOS-specific code on simulated or real devices.
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> **Important**. You need a Mac with macOS to write and run iOS-specific code on simulated or real devices.
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> This is an Apple requirement.
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> This is an Apple requirement.
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To work with this template, you need the following:
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To work with this template, you need the following:
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@ -24,7 +24,7 @@ To work with this template, you need the following:
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### Check your environment
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### Check your environment
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Before you start, use the [KDoctor](https://github.com/Kotlin/kdoctor) tool to ensure you have all the tools and that your development environment is configured correctly.
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When you install all the tools, use the [KDoctor](https://github.com/Kotlin/kdoctor) tool to ensure that your development environment is configured correctly:
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1. Install KDoctor with [Homebrew](https://brew.sh/):
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1. Install KDoctor with [Homebrew](https://brew.sh/):
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@ -38,26 +38,25 @@ Before you start, use the [KDoctor](https://github.com/Kotlin/kdoctor) tool to e
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kdoctor
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kdoctor
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```
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```
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If everything is set up correctly, you'll see a valid output:
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If everything is set up correctly, you'll see a valid output:
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```text
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```text
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Environment diagnose (to see all details, use -v option):
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Environment diagnose (to see all details, use -v option):
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[✓] Operation System
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[✓] Operation System
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[✓] Java
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[✓] Java
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[✓] Android Studio
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[✓] Android Studio
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[✓] Xcode
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[✓] Xcode
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[✓] Cocoapods
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[✓] Cocoapods
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Conclusion:
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Conclusion:
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✓ Your system is ready for Kotlin Multiplatform Mobile Development!
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✓ Your system is ready for Kotlin Multiplatform Mobile Development!
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```
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```
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Otherwise, KDoctor will highlight which parts of your setup still need configuration and suggest how to fix them.
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Otherwise, KDoctor will highlight which parts of your setup still need configuration and suggest how to fix them.
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## Examine the project structure
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## Examine the project structure
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1. Open the project in Android Studio.
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Open the project in Android Studio and switch the view from **Android** to **Project** to see all the files and targets belonging to the project:
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2. Switch the project view from **Android** to **Project** to see all the files and targets belonging to the project.
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<img src="readme_images/open_project_view.png" height="300px">
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<img src="readme_images/open_project_view.png" height="300px">
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@ -68,7 +67,7 @@ Your Compose Multiplatform project includes three modules:
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This is a Kotlin module that contains the logic common for both Android and iOS applications, the code you share between platforms.
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This is a Kotlin module that contains the logic common for both Android and iOS applications, the code you share between platforms.
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This `shared` module is also where you write your Compose Multiplatform code.
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This `shared` module is also where you write your Compose Multiplatform code.
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You can find the shared root `@Composable` function for your app in `shared/src/commonMain/kotlin/App.kt`.
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In `shared/src/commonMain/kotlin/App.kt`, you can find the shared root `@Composable` function for your app.
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It uses Gradle as the build system. You can add dependencies and change settings in `shared/build.gradle.kts`.
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It uses Gradle as the build system. You can add dependencies and change settings in `shared/build.gradle.kts`.
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The shared module builds into an Android library and an iOS framework.
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The shared module builds into an Android library and an iOS framework.
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@ -91,10 +90,11 @@ To run your application on an Android emulator:
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1. Create an [Android virtual device](https://developer.android.com/studio/run/managing-avds#createavd).
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1. Create an [Android virtual device](https://developer.android.com/studio/run/managing-avds#createavd).
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2. In the list of run configurations, select `androidApp`.
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2. In the list of run configurations, select `androidApp`.
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3. Choose your virtual device and click **Run**.
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3. Choose your virtual device and click **Run**:
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<img src="readme_images/run_on_android.png" height="60px">
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<img src="readme_images/run_on_android.png" height="60px">
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<img src="readme_images/android_app_running.png" height="200px">
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<img src="readme_images/android_app_running.png" height="200px">
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<details>
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<details>
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<summary>Alternatively, use Gradle</summary>
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<summary>Alternatively, use Gradle</summary>
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@ -105,44 +105,47 @@ To install an Android application on a real device Android device or an emulator
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### On iOS
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### On iOS
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#### Running on an iOS simulator
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#### Running on a simulator
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Once you have configured your environment correctly,
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To run your application on an iOS simulator in Android Studio, modify the `iosApp` run configuration:
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you can select which iOS simulator to run your application in Android Studio by modifying the `iosApp` run configuration.
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In the list of run configurations, select **Edit Configurations** and navigate to **iOS Application** | **iosApp**.
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1. In the list of run configurations, select **Edit Configurations**:
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In the **Execution target** list, select your target device.
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<img src="readme_images/edit_run_config.png" height="200px">
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<img src="readme_images/edit_run_config.png" height="200px">
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<img src="readme_images/target_device.png">
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Press the **Run** button to run your Compose Multiplatform app on the iOS simulator.
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2. Navigate to **iOS Application** | **iosApp**.
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3. In the **Execution target** list, select your target device. Click **OK**:
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<img src="readme_images/target_device.png">
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4. The `iosApp` run configuration is now available. Click **Run** next to your virtual device:
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<img src="readme_images/hello_world_ios.png" height="200px">
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<img src="readme_images/hello_world_ios.png" height="200px">
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#### Running on a real iOS device
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#### Running on a real device
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You can run your Compose Multiplatform application on a real device. To do that, you'll need the following:
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You can run your Compose Multiplatform application on a real iOS device.
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To do that, you'll need the following:
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* `TEAM_ID` associated with your [Apple ID](https://support.apple.com/en-us/HT204316)
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* `TEAM_ID` associated with your [Apple ID](https://support.apple.com/en-us/HT204316)
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* The iOS device registered in Xcode
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* The iOS device registered in Xcode
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Before you continue, we suggest creating a simple "Hello, world!" project in Xcode to ensure you can successfully run apps on your device.
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> Before you continue, we suggest creating a simple "Hello, world!" project in Xcode to ensure you can successfully run apps on your device.
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You can follow the instructions below or watch this [this Standford CS193P lecture recording](https://youtu.be/bqu6BquVi2M?start=716&end=1399).
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> You can follow the instructions below or watch this [this Standford CS193P lecture recording](https://youtu.be/bqu6BquVi2M?start=716&end=1399).
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>
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<details>
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> <details>
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>
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<summary>How to create and run a simple project in Xcode</summary>
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> <summary>How to create and run a simple project in Xcode</summary>
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>
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1. On the Xcode welcome screen, select **Create a new project in Xcode**.
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> 1. On the Xcode welcome screen, select **Create a new project in Xcode**.
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2. On the **iOS** tab, choose the **App** template. Click **Next**.
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> 2. On the **iOS** tab, choose the **App** template. Click **Next**.
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3. Specify the product name and keep other settings default. Click **Next**.
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> 3. Specify the product name and keep other settings default. Click **Next**.
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4. Select where to store the project on your computer and click **Create**. You'll see an app that displays "Hello, world!" on the device screen.
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> 4. Select where to store the project on your computer and click **Create**. You'll see an app that displays "Hello, world!" on the device screen.
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5. At the top of your Xcode screen, click on a device name near the **Run** button.
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> 5. At the top of your Xcode screen, click on a device name near the **Run** button.
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6. Plug in your device to the computer. You'll see this device in the list of run options.
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> 6. Plug in your device to the computer. You'll see this device in the list of run options.
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7. Choose your device and click **Run**.
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> 7. Choose your device and click **Run**.
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>
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</details>
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> </details>
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##### Finding your Team ID
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##### Finding your Team ID
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@ -170,7 +173,7 @@ If KDoctor doesn't work for you, try this alternative method:
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</details>
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</details>
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To run the application, set the `TEAM_ID` associated with your Apple ID:
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To run the application, set the `TEAM_ID`:
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1. In the template, navigate to the `iosApp/Configuration/Config.xcconfig` file.
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1. In the template, navigate to the `iosApp/Configuration/Config.xcconfig` file.
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2. Set your `TEAM_ID`.
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2. Set your `TEAM_ID`.
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@ -178,14 +181,15 @@ To run the application, set the `TEAM_ID` associated with your Apple ID:
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## Make your first changes
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## Make your first changes
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In Android Studio, navigate to the `shared/src/commonMain/kotlin/App.kt` file.
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1. In Android Studio, navigate to the `shared/src/commonMain/kotlin/App.kt` file.
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It's the common entry point for your Compose Multiplatform app.
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It's the common entry point for your Compose Multiplatform app.
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Here, you see the code responsible for rendering the "Hello, World!" button and the animated Compose Multiplatform logo:
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```kotlin
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Here, you see the code responsible for rendering the "Hello, World!" button and the animated Compose Multiplatform logo:
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@OptIn(ExperimentalResourceApi::class)
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@Composable
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```kotlin
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internal fun App() {
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@OptIn(ExperimentalResourceApi::class)
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@Composable
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internal fun App() {
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MaterialTheme {
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MaterialTheme {
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var greetingText by remember { mutableStateOf("Hello, World!") }
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var greetingText by remember { mutableStateOf("Hello, World!") }
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var showImage by remember { mutableStateOf(false) }
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var showImage by remember { mutableStateOf(false) }
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@ -204,15 +208,15 @@ internal fun App() {
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}
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}
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}
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}
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}
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}
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}
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}
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```
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```
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Update the shared code by adding a text field that will update the name displayed on the button:
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2. Update the shared code by adding a text field that will update the name displayed on the button:
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```diff
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```diff
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@OptIn(ExperimentalResourceApi::class)
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@OptIn(ExperimentalResourceApi::class)
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@Composable
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@Composable
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internal fun App() {
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internal fun App() {
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MaterialTheme {
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MaterialTheme {
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var greetingText by remember { mutableStateOf("Hello, World!") }
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var greetingText by remember { mutableStateOf("Hello, World!") }
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var showImage by remember { mutableStateOf(false) }
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var showImage by remember { mutableStateOf(false) }
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@ -223,7 +227,7 @@ internal fun App() {
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}) {
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}) {
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Text(greetingText)
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Text(greetingText)
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}
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}
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+ TextField(greetingText, onValueChange = { greetingText = it })
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+ TextField(greetingText, onValueChange = { greetingText = it })
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AnimatedVisibility(showImage) {
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AnimatedVisibility(showImage) {
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Image(
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Image(
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painterResource("compose-multiplatform.xml"),
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painterResource("compose-multiplatform.xml"),
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@ -232,12 +236,12 @@ internal fun App() {
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}
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}
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}
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}
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}
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}
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}
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}
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```
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```
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You'll see this change reflected on both the Android and iOS apps:
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3. Re-run both `androidApp` and `iosApp` configurations. You'll see this change reflected on both the Android and iOS apps:
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<img src="readme_images/text_field_added.png" height="200px">
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<img src="readme_images/text_field_added.png" height="200px">
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## How to configure the iOS application
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## How to configure the iOS application
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Before Width: | Height: | Size: 292 KiB After Width: | Height: | Size: 290 KiB |
Before Width: | Height: | Size: 79 KiB After Width: | Height: | Size: 77 KiB |
Before Width: | Height: | Size: 383 KiB After Width: | Height: | Size: 188 KiB |
Before Width: | Height: | Size: 35 KiB After Width: | Height: | Size: 32 KiB |
Before Width: | Height: | Size: 589 KiB After Width: | Height: | Size: 289 KiB |
Before Width: | Height: | Size: 93 KiB After Width: | Height: | Size: 91 KiB |