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[手机开发] Android 集成 React Native 和 Ionic

发表于 2018-4-11 08:00:00

原标题:Android (Kotlin) 集成 React Native 和 Ionic:Kotlin + React Native + Dore + Ionic 3.x

为了总结去年的移动开发经验,我使用 Kotlin + React Native + Dore + Ionic 3.x 做了一个简单的模板项目:Arche。

项目地址:https://github.com/phodal/arche

Arche 是一个 Android 移动应用模板——使用原生(Kotlin) Android 集成 React Native,以及 Ionic Web 框架、基于 React Native 的混合应用框架 Dore。

其技术栈是:

原生 Android(Kotlin)

React Native

Ionic + Angular

Dore Framework

创建原生 Android 项目

首先使用 Android Studio 创建一个带导航栏的项目

生成的 MainActivity 如下:

class MainActivity : AppCompatActivity() {

    private val mOnNavigationItemSelectedListener = BottomNavigationView.OnNavigationItemSelectedListener { item ->        when (item.itemId) {            R.id.navigation_home -> {
                message.setText(R.string.title_home)                return@OnNavigationItemSelectedListener true
            }            R.id.navigation_dashboard -> {
                message.setText(R.string.title_dashboard)                return@OnNavigationItemSelectedListener true
            }            R.id.navigation_notifications -> {
                message.setText(R.string.title_notifications)                return@OnNavigationItemSelectedListener true
            }
        }        false
    }

    override fun onCreate(savedInstanceState: Bundle?) {        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        navigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener)
    }
}

在这里,我使用的是 Fragment 来切换页面,逻辑如下:

private fun switchFragment(lastIndex: Int, index: Int) {
    val transaction = supportFragmentManager.beginTransaction()
    transaction.hide(fragments!![lastIndex])    if (!fragments!![index].isAdded) {
        transaction.add(R.id.container, fragments!![index])
    }
    transaction.show(fragments!![index]).commitAllowingStateLoss()
}private fun initFragments() {
    homeFragment = HomeFragment()
    archeReactFragment = ArcheReactFragment()
    archeWebViewFragment = ArcheWebViewFragment()
    fragments = arrayOf(homeFragment!!, archeReactFragment!!, archeWebViewFragment!!)
    lastShowFragment = 0
    supportFragmentManager
            .beginTransaction()
            .add(R.id.container, homeFragment)
            .show(homeFragment)
            .commit()
}

对应的,mOnNavigationItemSelectedListener 就变成了:

private val mOnNavigationItemSelectedListener = OnNavigationItemSelectedListener { item ->    when (item.itemId) {
        R.id.navigation_home -> {            if (lastShowFragment != 0) {
                switchFragment(lastShowFragment, 0)
                lastShowFragment = 0
            }            return@OnNavigationItemSelectedListener true
        }
        R.id.navigation_notifications -> {            if (lastShowFragment != 1) {
                switchFragment(lastShowFragment, 1)
                lastShowFragment = 1;
            }            return@OnNavigationItemSelectedListener true
        }
        R.id.navigation_webview -> {            if (lastShowFragment != 2) {
                switchFragment(lastShowFragment, 2)
                lastShowFragment = 2
            }            return@OnNavigationItemSelectedListener true
        }
    }    false}

其布局是:



    

    

    
React Native 部份创建 React Native 应用
npm install -g create-react-native-app


create-react-native-app RNArche

cd RNArchenpm start
生成项目

Inject

npm run inject
添加权限

添加 Overlay 的权限处理:

override fun onCreate(savedInstanceState: Bundle?) {    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)

    navigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener)    if (BuildConfig.DEBUG && Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {        if (!Settings.canDrawOverlays(this)) {
            val intent = Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
                    Uri.parse("package:" + packageName))
            startActivityForResult(intent, OVERLAY_PERMISSION_REQ_CODE)
        }
    }
}@SuppressLint("ShowToast")override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {    super.onActivityResult(requestCode, resultCode, data)    if (requestCode == OVERLAY_PERMISSION_REQ_CODE) {        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {            if (!Settings.canDrawOverlays(this)) {
                Toast.makeText(this, "Lost Permissions", Toast.LENGTH_SHORT)
            }
        }
    }
}

以及 AndroidManifest.xml 中的:

创建 ReactApplication

我的是 ArcheApplication

class ArcheApplication : Application(), ReactApplication {    private val mReactNativeHost = object : ReactNativeHost(this) {        override fun getUseDeveloperSupport(): Boolean {            return true
        }        public override fun getPackages(): List {            return Arrays.asList(
                    MainReactPackage()
            )
        }
    }    override fun getReactNativeHost(): ReactNativeHost {        return mReactNativeHost
    }
}
创建基础的 Fragment
abstract class ReactFragment : Fragment() {
    private var mReactRootView: ReactRootView? = null
    private var mReactInstanceManager: ReactInstanceManager? = null

    abstract val mainComponentName: String

    override fun onAttach(context: Context?) {
        super.onAttach(context)
        mReactRootView = ReactRootView(context)
        mReactInstanceManager = (activity.application as ArcheApplication)
                .reactNativeHost
                .reactInstanceManager

    }

    override fun onCreateView(inflater: LayoutInflater?, group: ViewGroup?, savedInstanceState: Bundle?): ReactRootView? {
        super.onCreate(savedInstanceState)        return mReactRootView
    }


    override fun onActivityCreated(savedInstanceState: Bundle?) {
        super.onActivityCreated(savedInstanceState)
        mReactRootView!!.startReactApplication(
                mReactInstanceManager,
                mainComponentName,                null
        )
    }
}
更新 MainActivity

然后在我们的 MainActivity 中实现对应的逻辑:

class MainActivity : AppCompatActivity(), DefaultHardwareBackBtnHandler {
    ...    private var mReactInstanceManager: ReactInstanceManager? = null

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        navigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener)
        mReactInstanceManager = (application as ArcheApplication).reactNativeHost.reactInstanceManager        initFragments()

        if (BuildConfig.DEBUG && Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {            if (!Settings.canDrawOverlays(this)) {
                val intent = Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
                        Uri.parse("package:" + packageName))
                startActivityForResult(intent, OVERLAY_PERMISSION_REQ_CODE)
            }
        }
    }    override fun onPause() {
        super.onPause()        if (mReactInstanceManager != null) {
            mReactInstanceManager!!.onHostPause(this)
        }
    }    override fun onResume() {
        super.onResume()        if (mReactInstanceManager != null) {
            mReactInstanceManager!!.onHostResume(this, this)
        }
    }    override fun invokeDefaultOnBackPressed() {
        super.onBackPressed()
    }
}
创建我们的 Fragment
class ArcheReactFragment : ReactFragment() {
    override val mainComponentName: String
        get() = "RNArche"

    private var mReactRootView: ReactRootView? = null
    private var mReactInstanceManager: ReactInstanceManager? = null

    @Nullable
    override fun onCreateView(inflater: LayoutInflater?, group: ViewGroup?, savedInstanceState: Bundle?): ReactRootView? {
        mReactRootView = ReactRootView(activity)
        mReactInstanceManager = ReactInstanceManager.builder()
                .setApplication(activity.application)
                .setBundleAssetName("index.android.bundle")
                .setJSMainModulePath("index")
                .addPackage(MainReactPackage())
                .setUseDeveloperSupport(BuildConfig.DEBUG)
                .setInitialLifecycleState(LifecycleState.RESUMED)
                .build()
        mReactRootView!!.startReactApplication(mReactInstanceManager, "RNArche", null)        return mReactRootView
    }
}

这里的 "RNArche" 需要和 React Native 中注册的 Component 保持一致:

AppRegistry.registerComponent('RNArche', () => App);

在这里,也可以注册多个 Component

AppRegistry.registerComponent('RNArche', () => App);
AppRegistry.registerComponent('RNArche2', () => App2);

当然,也可以创建一个自己的 Activity 来做对应的事情。

WebView

好了,现在,让我们来创建我们的 WebView 应用:

npm install -g cordova ionic

ionic start archeWebview sidemenu

然后下面的命令,来生成最后的 www 文件:

ionic build --prod

将其复制到 assets 目录下。

对应的 Android 代码如下:

@SuppressLint("SetJavaScriptEnabled")@Nullableoverride fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?, savedInstanceState: Bundle?): View? {
    val view = inflater?.inflate(R.layout.fragment_webview, container, false)

    avi = view?.findViewById(R.id.avi)
    mWebView = view?.findViewById(R.id.webview)

    mWebView!!.loadUrl("file://android_asset/www/index.html")

    val webSettings = mWebView!!.settings
    webSettings.javaScriptEnabled = true
    mWebView!!.webViewClient = WebViewClient()    return view
}

然后,我也顺手添加了一个 Loading 效果:

private fun setLoadingProgress() {
    mWebView!!.webViewClient = object : WebViewClient() {        override fun onPageStarted(view: WebView?, url: String?, favicon: Bitmap?) {
            avi!!.show()
            super.onPageStarted(view, url, favicon)
        }        override fun onPageFinished(view: WebView?, url: String?) {
            avi!!.hide()
            super.onPageFinished(view, url)
        }
    }
}

对应的 XML 如下:



    

        

        

    
Q & A问题libgnustl_shared.so" is 32-bit instead of 64-bit

在 build.gradle 中添加 ndk 配置:

android {    compileSdkVersion 26
    defaultConfig {        applicationId "arche.phodal.com.arche"
        minSdkVersion 16
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        vectorDrawables.useSupportLibrary= true
        ndk {            abiFilters "armeabi-v7a", "x86"
        }
    }
    buildTypes {        release {            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}
Bundle files
cp ./RNArche/android/app/build/intermediates/assets/release/index.android.bundle ./app/src/main/assets/index.android.bundle

问题:

java.lang.ClassCastException: android.app.Application cannot be cast to arche.phodal.com.arche.ArcheApplication

在 AndroidManifest.xml 添加对应的 application

    




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