我有一个带图标的操作栏,单击该图标可在屏幕上显示对应的片段。这与导航图无关。在操作栏中单击相应图标时,我正在使用NavigationUI.onNavDestinationSelected
方法导航到各个片段。当我使用导航图通过片段内的按钮单击动作等在片段之间导航时,没有动画,但是当我单击动作栏图标时,它将导致对应的片段缓慢地淡入和淡出。要禁用此功能,我该怎么办?
包含NavHostFragment的主要活动:
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.view.Menu
import android.view.MenuItem
import androidx.navigation.NavController
import androidx.navigation.Navigation
import androidx.navigation.ui.NavigationUI
import com.google.android.material.snackbar.Snackbar
class MainActivity : AppCompatActivity() {
private lateinit var navController: NavController
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.main_activity)
navController = Navigation.findNavController(this, R.id.navHostFragment)
NavigationUI.setupActionBarWithNavController(this, navController)
//supportActionBar?.setDisplayHomeAsUpEnabled(true)
//setSupportActionBar(toolbar)
}
override fun onSupportNavigateUp(): Boolean {
onBackPressed()
return true
}
//TODO: add options in overflow menu to add new category and a new task
override fun onCreateOptionsMenu(menu: Menu?): Boolean {
menuInflater.inflate(R.menu.main_menu, menu)
return super.onCreateOptionsMenu(menu)
}
override fun onOptionsItemSelected(item: MenuItem): Boolean {
when (item.itemId)
{
R.id.app_settings -> {
//just to test it out
Snackbar.make(findViewById(R.id.main_activity_container), "app settings option clicked", Snackbar.LENGTH_LONG).show()
true}
R.id.main_pomo_settings -> {
//just to test it out
Snackbar.make(findViewById(R.id.main_activity_container), "pomo settings option clicked", Snackbar.LENGTH_LONG).show()
true}
}
return NavigationUI.onNavDestinationSelected(item!!, navController) || super.onOptionsItemSelected(item)
}
}
我找到了解决方案。您必须通过在anim文件夹中创建以下空动画文件来禁用动画:
res / anim / nav_default_pop_exit_anim.xml
New -> Android Resource File
nav_default_enter_anim
作为名称,然后单击确定。所有文件中只能包含以下内容:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<!--Empty to disable animation-->
</set>
这是帮助我的stackoverflow答案:https://stackoverflow.com/a/56306166/10259491