react-native-change-icon

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react-native-change-icon

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Change your application icon programmatically for React Native apps

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<p align="center">
  <h2 align="center">React Native Change Icon</h2>
  <h4 align="center">Programmatically change the application icon.</h4>
</p>

---

<p align="center">
	<p align="center">Supported Platforms</p>
	<p align="center">
		<img src="https://img.shields.io/badge/Android-32e650?style=flat-square" alt="Android">
		<img src="https://img.shields.io/badge/iOS-dbdbdb?style=flat-square" alt="iOS">
	</p>
	<div align="center">
		<code>yarn add react-native-change-icon</code>
		<br/>
		<code>npm i react-native-change-icon</code>
	</div>
</p>

---

---

<p align="center">
	<h3 align="center"><strong>1.</strong>
		Make your Icons
	</h3>
	<p align="center">
		I'd suggest exporting them around `1024px` or higher.
	</p>
</p>

<div align="center">
	<a href="./docs/examples/Step-1">Example Icon Files</a>
	<img src="docs/images/icons-examples-showcase.png" alt="Example Icons">
</div>

---

<p align="center">
	<h3 align="center"><strong>2.</strong>
		Generate Icons
	</h3>
	<p align="center">
		Use a service such as <a href="https://www.appicon.co/">https://www.appicon.co/</a> in order to generate the platform specific icon files.
	</p>
</p>

- Just upload your images from earlier, and checkmark both `iPhone` and `Android`.
- This will give you a `.zip` file with the files needed.

---

<p align="center">
	<h3 align="center"><strong>3.</strong>
		Prepare Icon Files
	</h3>
</p>

- You need to rename and sort these files slightly differently for both `iOS` and `Android`.

**Android 🤖**
1. Simply just rename them to something appropriate - typically this follows the naming convention `ic_launcher_<type>.png` e.g. `ic_launcher_dark.png`
   - Make sure to keep them within the folder structure they are in `mipmap-hdpi`... etc.
2. Create a single `android` directory with all the `mipmap-*` directories inside. Inside them place all your generated icons.

<div align="center">
	<a href="./docs/examples/Step-3/android">Example Android Icon Sets</a>
	<img src="docs/images/icons-example-exported-android.png" alt="Example Exported Android Icons">
</div>

**iOS 🍏**
1. You will need the generated folder called `AppIcon.appiconset` as this contains your icons.
2. Rename this folder a bit like above for Android using a naming convention such as `<type>.appiconset` e.g. `Dark.appiconset`
3. You will also need to edit the `Contents.json` to change and references from `Assets.xcassets/AppIcon.appiconset` to what you have renamed the file now e.g. `Images.xcassets/AppIcon.appiconset`

<div align="center">
	<a href="./docs/examples/Step-3/ios">Example iOS Icon Sets</a>
	<img src="docs/images/icons-example-exported.png" alt="Example Exported iOS Icons">
</div>

---

<p align="center">
	<h3 align="center"><strong>4.</strong>
		Import the Icons
	</h3>
</p>

**Android 🤖**
1. Drag all of the `mipmap` folders into `android/app/src/main/res/`

**iOS 🍏**
1. Drag all of the `.appiconset` folders into `ios/<app-name>/Images.xcassets`

---

<p align="center">
	<h3 align="center"><strong>5.</strong>
		Setup Environments
	</h3>
</p>

**Android 🤖**
1. Add an alias for each of your new icons within the `AndroidManifest.xml` (within `<application>`).
   - Make sure these have the properties as shown below.
   - Create an alias for `.MainActivityDefault` as well but for this, set `android:enabled="true"`.
   - For the name prefix it `.MainActivity...` followed by the name you will use to reference your icon. e.g. for our light icon we will use `.MainActivityLight`
2. You'll have to remove the `LAUNCHER` intent filter from the main `<activity>` as we have added the launcher in `.MainActivityDefault`.

<div align="center">
	<a href="./docs/examples/Step-4/AndroidManifest.xml">Example AndroidManifest.xml</a>
</div>

```xml
<activity-alias 
	android:name=".MainActivityLight"
	android:enabled="false"
	android:exported="true"
	android:icon="@mipmap/ic_launcher_light"
	android:targetActivity=".MainActivity">
	<intent-filter>
		<action android:name="android.intent.action.MAIN" />
		<category android:name="android.intent.category.LAUNCHER" />
	</intent-filter>
	</activity-alias>
```

**iOS 🍏**
1. At the bottom of your `Info.plist` insert a key for `CFBundleIcons`
   - Note: For iPad, you need to add the key `CFBundleIcons~ipad`
2. Within this dictionary add another key for `CFBundleAlternateIcons`
3. Finally then within this dictionary you can add in the keys for you new icons
   - The `key` is the name you will reference from within code.
   - Set the first array item to the name of the `.appiconset` we created earlier.
4. In XCode, in your app's `General` settings, under `App Icons and Launch Screen`, set "App Icon" to `Default` and check the "Include all app icon assets" checkbox below.

<div align="center">
	<img src="docs/ios-example-app-icon.png" alt="Example App Icons and Launch Screen">
</div>
<div align="center">
	<a href="./docs/examples/Step-4/Info.plist">Example Info.plist</a>
</div>

```xml
<key>Dark</key>
<dict>
	<key>CFBundleIconFiles</key>
	<array>
		<string>Dark</string>
	</array>
	<key>UIPrerenderedIcon</key>
	<false/>
</dict>
```

---

<p align="center">
	<h3 align="center"><strong>6.</strong>
		Use the Icons
	</h3>
	<p align="center">
		You can now use your icons and switch between them within React Native 🎉
	</p>
</p>

```javascript
import { changeIcon, getIcon, resetIcon } from 'react-native-change-icon';

// Pass the name of icon to be enabled
changeIcon('Dark');
changeIcon('Light');

// Get the icon currently enabled
getIcon();

// Reset the Icon to the default
resetIcon();
```

> All functions are typed and return a promise that either resolves successfully, or will reject with the error that has occurred.

**react-native-push-notification and notifee**

When using `react-native-push-notification` or `notifee`, notifications won't work as we are using `activity-alias`.

To fix this, you need to create a Java file for each of the `activity-alias` in your `AndroidManifest.xml`.

The file should be placed alongside you `MainActivity.java`. Example:
```
android/app/src/main/java/com/myapp/MainActivity<KEY>.java
```
The content of this file should be:
```
package com.myapp;
public class MainActivity<KEY> extends MainActivity {}
```
Replace `<KEY>` with the icon name used in the manifest. Replace com.myapp with your android app structure.

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