我希望在底部导航栏按下时更改背景颜色(仅选定区域),就像下面的链接:
http://uupload.ir/files/nq3k_tab_bar.jpg
这是我的选择器xml:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto">
<item android:state_checked="true" android:color="@color/beyez" />
<item android:state_active="true" app:itemBackground="@color/backbeyez"/>
<item android:color="@color/colorPrimaryDark" />
</selector>
这是活动的 XML 代码:
<android.support.design.widget.BottomNavigationView
android:id="@+id/bottomnav"
android:layout_width="382dp"
android:layout_height="52dp"
android:layout_marginBottom="0dp"
app:itemBackground="@color/colorPrimary"
app:itemIconTint="@drawable/nav_items_color"
app:itemTextColor="@drawable/nav_items_color"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:menu="@menu/navigation"
tools:layout_editor_absoluteY="515dp">
</android.support.design.widget.BottomNavigationView>
以下是我的Java类的代码:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
switchorders();
BottomNavigationView bottomNavigationView = (BottomNavigationView)findViewById(R.id.bottomnav);
BottomNavigationViewHelper.disableShiftMode(bottomNavigationView);
bottomNavigationView.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener()
{
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
switch (item.getItemId())
{
case R.id.navigation_orders:
switchorders();
break;
case R.id.navigation_credit:
switchcredits();
break;
case R.id.navigation_works:
switchworks();
break;
case R.id.navigation_profile:
switchprofile();
break;
}
return true;
}
});
}
谢谢大家的帮助!
感谢你们的协助!