给不知道如何配置power_image 尤其是现在很多flutter项目默认使用swift和kotlin的同学的说明书

很多对原生比较陌生的同学在使用power_image前不知道如何配置，尤其是现在很多flutter项目默认使用swift和kotlin新建，加上power_image的demo在ios和android只作了oc和java的配置说明。

下面是对官方demo的补充，降低此插件的使用难度：

### 1.ios-swift

1.1 如果不打算自己定制自定义对应的加载器，请把example/ios/Runner/Biz整个文件夹直接复制到自己的ios项目Runner
1.2 在example/ios/Runner/Runner-Bridging-Header.h添加以下桥接头文件

```c++
#import "PowerImageNetworkImageLoader.h"
#import "PowerImageAssetsImageLoader.h"
#import "PowerImageFlutterAssertImageLoader.h"
#import "PowerImageFileImageLoader.h"
```

1.3 在example/ios/Runner/Podfile中添加依赖，然后在自己的项目ios路径下使用终端pod install

```ruby
pod 'SDWebImage', '~> 5.0'
```

1.4 在example/ios/Runner/AppDelegate.swift的application方法中添加以下注册

```swift
...
import power_image ///请导入
import SDWebImage ///请导入

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
override func application(
_ application: UIApplication,
didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
) -> Bool {
GeneratedPluginRegistrant.register(with: self)

///添加注册
PowerImageLoader.sharedInstance().register(PowerImageNetworkImageLoader.init(), forType: kPowerImageImageTypeNetwork)

PowerImageLoader.sharedInstance().register(PowerImageAssetsImageLoader.init(), forType: kPowerImageImageTypeNativeAsset)

PowerImageLoader.sharedInstance().register(PowerImageFlutterAssertImageLoader.init(), forType: kPowerImageImageTypeAsset)

PowerImageLoader.sharedInstance().register(PowerImageFileImageLoader.init(), forType: kPowerImageImageTypeFile)

SDImageCacheConfig.default.maxMemoryCount = 20

return super.application(application, didFinishLaunchingWithOptions: launchOptions)
}
}

```

### 2.android-kotlin

2.1 在app/build.gradle的android.buildType下添加以下依赖,然后点击sync now(需要以android module打开项目)

```groovy
dependencies {
implementation 'com.github.bumptech.glide:glide:4.12.0'
annotationProcessor 'com.github.bumptech.glide:compiler:4.12.0'
}
```

2.2 同样的不打算自定义的加载器，请把example/android/app/src/main/java/com/taobao/power_image_example/power_image_loader/整个文件夹和example/android/app/src/main/java/com/taobao/power_image_example/GlideMultiFrameImage.java直接复制到自己的app/src/main/kotlin/com/xxx/xxx/下(复制之后注意修改导入路径)

2.3 在android项目的app/src/main/kotlin/com/xxx/xxx/MainActivity.kt中添加注册加载器

```kotlin
...
import com.xxx.xxxx.power_image_loader.PowerImageFileLoader ///注意路径
import com.xxx.xxxx.power_image_loader.PowerImageFlutterAssetLoader
import com.xxx.xxxx.power_image_loader.PowerImageNativeAssetLoader
import com.xxx.xxxx.power_image_loader.PowerImageNetworkLoader
import io.flutter.embedding.android.FlutterActivity

import com.taobao.power_image.loader.PowerImageLoader

class MainActivity: FlutterActivity() {
@Override
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
///添加注册
PowerImageLoader.getInstance().registerImageLoader(
PowerImageNetworkLoader(this.applicationContext), "network");
PowerImageLoader.getInstance().registerImageLoader(
PowerImageNativeAssetLoader(this.applicationContext), "nativeAsset");
PowerImageLoader.getInstance().registerImageLoader(
PowerImageFlutterAssetLoader(this.applicationContext), "asset");
PowerImageLoader.getInstance().registerImageLoader(
PowerImageFileLoader(this.applicationContext), "file");
}
}

```

3.开始在flutter中添加注册,

```dart
void main(){
...
///添加初始化
PowerImageBinding();
///添加全局power_image的加载方式
PowerImageLoader.instance.setup(PowerImageSetupOptions(renderingTypeTexture,
errorCallbackSamplingRate: null,
errorCallback: (PowerImageLoadException exception) {}));

runApp(const MyApp());
...
}
```

最后可以愉快使用这个超棒的插件了🥳

Review the official demo paths under example/ios/Runner and example/android/app, especially the Swift AppDelegate.swift, Runner-Bridging-Header.h, Podfile, Kotlin MainActivity.kt, and app/build.gradle examples. Compare the existing Objective-C and Java setup documentation with the Swift and Kotlin instructions in this issue. Done means the documentation clearly covers both configurations and the Flutter initialization example.

Written by the indexing model from the issue text.