要实现Android导航组件中的深链接返回栈,可以按照以下步骤进行操作:
class MainActivity : AppCompatActivity() {
private lateinit var navController: NavController
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val navHostFragment = supportFragmentManager.findFragmentById(R.id.nav_host_fragment) as NavHostFragment
navController = navHostFragment.navController
// 设置导航图
val navGraph = navController.navInflater.inflate(R.navigation.nav_graph)
navController.graph = navGraph
// 处理深链接
val uri = intent.data
if (uri != null) {
navController.handleDeepLink(uri)
}
}
override fun onNewIntent(intent: Intent?) {
super.onNewIntent(intent)
// 处理新的深链接
val uri = intent?.data
if (uri != null) {
navController.handleDeepLink(uri)
}
}
}
class Destination1Fragment : Fragment() {
...
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
// 设置返回栈的行为
val navController = findNavController()
val appBarConfiguration = AppBarConfiguration.Builder(navController.graph).build()
NavigationUI.setupActionBarWithNavController(requireActivity(), navController, appBarConfiguration)
}
override fun onSupportNavigateUp(): Boolean {
val navController = findNavController()
return navController.navigateUp() || super.onSupportNavigateUp()
}
}
通过以上步骤,我们就可以实现Android导航组件中的深链接返回栈的功能。当用户点击深链接时,将会在返回栈中创建相应的目标,并在每个目标的Fragment中设置返回栈的行为,使得用户可以通过返回按钮返回到之前的目标。