41 lines
1.7 KiB
Kotlin
41 lines
1.7 KiB
Kotlin
package androidx.navigation.ui
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import android.view.MenuItem
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import androidx.annotation.IdRes
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import androidx.navigation.ActivityNavigator
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import androidx.navigation.NavController
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import androidx.navigation.NavDestination
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import androidx.navigation.NavDestination.Companion.hierarchy
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import androidx.navigation.NavOptions
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fun onNavDestinationSelected2(item: MenuItem, navController: NavController): Boolean {
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if (navController.currentDestination?.matchDestination(item.itemId) == true) return true
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val builder = NavOptions.Builder().setLaunchSingleTop(true)
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if (
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navController.currentDestination!!.parent!!.findNode(item.itemId)
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is ActivityNavigator.Destination
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) {
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builder.setEnterAnim(R.anim.nav_default_enter_anim)
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.setExitAnim(R.anim.nav_default_exit_anim)
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.setPopEnterAnim(R.anim.nav_default_pop_enter_anim)
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.setPopExitAnim(R.anim.nav_default_pop_exit_anim)
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} else {
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builder.setEnterAnim(com.hippo.ehviewer.R.anim.scene_open_enter)
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.setExitAnim(com.hippo.ehviewer.R.anim.scene_open_exit)
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.setPopEnterAnim(com.hippo.ehviewer.R.anim.scene_close_enter)
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.setPopExitAnim(com.hippo.ehviewer.R.anim.scene_close_exit)
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}
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val options = builder.build()
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return try {
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// TODO provide proper API instead of using Exceptions as Control-Flow.
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navController.navigate(item.itemId, null, options)
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// Return true only if the destination we've navigated to matches the MenuItem
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navController.currentDestination?.matchDestination(item.itemId) == true
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} catch (e: IllegalArgumentException) {
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false
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}
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}
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fun NavDestination.matchDestination(@IdRes destId: Int): Boolean =
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hierarchy.any { it.id == destId }
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