How to use Android LifecycleOwner in dialog

Question

I want to use mvvm in Dialog but I don't know how to pass LifecycleOwner to observe

class CommonDialog(context: Context) : Dialog(context, R.style.AppMaskStatusTheme) {

    private val viewBinding: DialogSportOrderBinding by lazy { DialogSportOrderBinding.inflate(LayoutInflater.from(context)) }
    private val viewModel by lazy { ViewModelProvider(context as ViewModelStoreOwner)[SportOrderViewModel::class.java] }

 init {
        setContentView(viewBinding.root)

        viewModel.sportOrderList.observe(***what to pass here?***, androidx.lifecycle.Observer {

        })
    }
}

I have tried context as LifecycleOwner, context as AppCompatActivity but all fail

please help me, thanks!

Answer 1

You can create your own LifecycleOwner like this

class MyLifecycleOwner() : LifecycleOwner {
    private val mLifecycleRegistry: LifecycleRegistry by lazy { LifecycleRegistry(this) }

    init {
        mLifecycleRegistry.handleLifecycleEvent(Lifecycle.Event.ON_START)
    }

    fun stop() {
        mLifecycleRegistry.handleLifecycleEvent(Lifecycle.Event.ON_STOP)
    }

    fun start() {
        mLifecycleRegistry.handleLifecycleEvent(Lifecycle.Event.ON_START)
    }

    override fun getLifecycle(): Lifecycle = mLifecycleRegistry
}

Then your Dialog class will be like this

class CommonDialog(context: Context) : Dialog(context, R.style.AppMaskStatusTheme) {

    private val viewBinding: DialogSportOrderBinding by lazy { DialogSportOrderBinding.inflate(LayoutInflater.from(context)) }
    private val viewModel by lazy { ViewModelProvider(context as ViewModelStoreOwner)[SportOrderViewModel::class.java] }

    private val lifeCycleOwner: MyLifecycleOwner by lazy { MyLifecycleOwner() }

    init {
        setContentView(viewBinding.root)

        viewModel.sportOrderList.observe(lifeCycleOwner, {

        })
    }

    override fun onStart() {
        super.onStart()
        lifeCycleOwner.start()
    }

    override fun onStop() {
        super.onStop()
        lifeCycleOwner.stop()
    }
}

Read more about Lifecycle-Aware Components at here