puwei/app-compose/src/main/java/com/yinuo/safetywatcher/MainActivity.kt

package com.yinuo.safetywatcher

import android.content.Intent
import android.os.Bundle
import android.widget.Toast
import androidx.activity.ComponentActivity
import androidx.activity.OnBackPressedCallback
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.ui.Modifier
import androidx.lifecycle.viewmodel.compose.viewModel
import androidx.navigation.compose.rememberNavController
import com.yinuo.safetywatcher.navi.NavigationUtil
import com.yinuo.safetywatcher.navi.NavigationView
import com.yinuo.safetywatcher.ui.SplashView
import com.yinuo.safetywatcher.ui.theme.EasypusherTheme
import org.easydarwin.push.MediaStream

class MainActivity : ComponentActivity() {
    var exitTime = 0L

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        startMediaService()
        setContent {
            EasypusherTheme {
                // A surface container using the 'background' color from the theme
                Surface(
                    modifier = Modifier.fillMaxSize(),
                    color = MaterialTheme.colorScheme.background
                ) {
                    val viewModel: MainViewModel = viewModel()
                    if (viewModel.isSplash) {
                        SplashView { viewModel.isSplash = false }
                    } else {
                        NavigationUtil.navHostController = rememberNavController()
                        NavigationView()
                    }
                }
            }
        }
        addBackListener()
    }

    private fun startMediaService() {
        // 启动服务...
        val intent = Intent(this, MediaStream::class.java)
        startService(intent)
    }

    private fun addBackListener() {
        onBackPressedDispatcher.addCallback(object : OnBackPressedCallback(true) {
            override fun handleOnBackPressed() {
                //是主页
                if (System.currentTimeMillis() - exitTime > 2000) {
                    Toast.makeText(this@MainActivity, "再点一次退出！", Toast.LENGTH_SHORT)
                        .show()
                    exitTime = System.currentTimeMillis()
                } else {
                    finish()
                    overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out)
                }
            }
        })
    }
}