[英]Unable to open navigation drawer by button click (only by gesture)
I am able to show navigation drawer by gesture, but not through button click.我可以通过手势显示导航抽屉,但不能通过按钮单击。 Tried with toolbar, does not work still.用工具栏试过了,还是不行。 Any ideas?有任何想法吗?
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawerLayout, R.string.open, R.string.cancel);
toggle.setDrawerIndicatorEnabled(true);
navigation.bringToFront();
drawerLayout.addDrawerListener(toggle);
navigation.setNavigationItemSelectedListener(this);
toggle.syncState();
//code to open on regular button click
if (drawerLayout.isDrawerVisible(GravityCompat.START)) {
drawerLayout.closeDrawer(GravityCompat.START);
} else {
drawerLayout.openDrawer(navigation);
}
Also, onNavigationItemSelected is never ever called when drawer is invoked by gesture.此外,当通过手势调用抽屉时,永远不会调用 onNavigationItemSelected。 Not sure why, everything is in place (I checked many, many tutorials).不知道为什么,一切都准备好了(我检查了很多很多教程)。
<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<FrameLayout
android:id="@+id/fragmentContainer"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</FrameLayout>
<com.google.android.material.navigation.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="@layout/nav_header"
app:menu="@menu/navigation_menu" />
</androidx.drawerlayout.widget.DrawerLayout>
Update:更新:
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
Log.d(TAG, "onNavigationItemSelected:");
if (item.getItemId() == R.id.optionServices) {
Toast.makeText(MainActivity.this, "optionServices", Toast.LENGTH_SHORT).show();
}
return true;
}
Try using flags,尝试使用标志,
mDrawerLayout.openDrawer(Gravity.LEFT);
mDrawerLayout.closeDrawer(Gravity.LEFT);
Refer code from here in detail详细参考这里的代码
Would you share the setNavigationItemSelectedListener implementation?你会分享 setNavigationItemSelectedListener 的实现吗? you may have not returned boolean value from it properly.您可能没有正确返回 boolean 值。
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