android原生项目集成flutter模块

android原生项目集成flutter模块

• 创建flutter模块

  使用android studio，File->New->New Flutter Project...->Flutter Module->Next->Next->Finish，即可完成，期间可以修改包名、项目名称等。
  

• 配置settings.gradle

  setBinding(new Binding(gradle: this))
  evaluate(new File(settingsDir.parent, "fluttermodule/.android/include_flutter.groovy"))      //fluttermodule是flutter模块项目名称
  

• 配置build.gradle

  //flutter是默认模块名称，具体看build/outputs/aar下的aar包名称，可以通过settings.gradle里的include(':test')和 project(':test').projectDir = new File('项目路径')修改名称为test并指定项目路径
  api project(path: ':flutter')	
  
  

• 代码

  //BaseActivity必须继承AppCompatActivity，才有ActivityLifeCycle。
  class FlutterTestActivity : BaseActivity() {
      override fun setLayout() = R.layout.m_activity_flutter_test
      
      private val flutterEngineId = "flutterEngineId"
      private var engine: FlutterEngine? = null
  
      override fun initView(view: View) {
          setToolbarTitle("flutter测试页面")
          engine = FlutterEngineCache.getInstance().get(flutterEngineId)
          if (engine == null) {
              engine = FlutterEngine(this)
              engine?.dartExecutor?.executeDartEntrypoint(DartExecutor.DartEntrypoint.createDefault())
              FlutterEngineCache.getInstance().put(flutterEngineId, engine)
          }
          val view = createFlutterView()
          view.attachToFlutterEngine(engine!!)
      }
  
      private fun createFlutterView(): FlutterView {
          val flutterView = FlutterView(this)      //默认加载flutter侧的main.dart文件
          val params = FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT)
          binding.flContain.addView(flutterView, params)
          return flutterView
      }
  
      override fun initEvent() {
      }
  
      override fun createPresenter() = FlutterTestPresenter()
  
      override fun onResume() {
          super.onResume()
          engine?.lifecycleChannel?.appIsResumed()
      }
  
      override fun onPause() {
          super.onPause()
          engine?.lifecycleChannel?.appIsInactive()
      }
  
      override fun onStop() {
          super.onStop()
          engine?.lifecycleChannel?.appIsPaused()
      }
  
  }