Java 在BottomNavigationView中禁用重新选择

当再次单击

BottomNavigationView

中的当前选项卡时，如何禁用重新加载片段

换句话说，如何在

BottomNavigationView

中禁用重新选择

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PS：我正在使用

NavigationUI

设置

BottomNavigationView

试试这个，让我知道Mohammad Hosein

final Fragment fragment1 = new Fragment1();
final Fragment fragment2 = new Fragment2();
final Fragment fragment3 = new Fragment3();
final FragmentManager fm = getSupportFragmentManager();
Fragment active = fragment1; //make the first screen as your active fragment.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

fm.beginTransaction().add(R.id.main_container, fragment3, "3").hide(fragment3).commit();
        fm.beginTransaction().add(R.id.main_container, fragment2, "2").hide(fragment2).commit();
        fm.beginTransaction().add(R.id.main_container, fragment1, "1").commit();

}

private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener
        = new BottomNavigationView.OnNavigationItemSelectedListener() {

    @Override
    public boolean onNavigationItemSelected(@NonNull MenuItem item) {
        switch (item.getItemId()) {
            case R.id.f1_menu_item:
                fm.beginTransaction().hide(active).show(fragment1).commit();
                active = fragment1;
                return true;

            case R.id.f2_menu_item:
                fm.beginTransaction().hide(active).show(fragment2).commit();
                active = fragment2;
                return true;

            case R.id.f3_menu_item:
               fm.beginTransaction().hide(active).show(fragment3).commit();
              active = fragment3;

                return true;
        }
        return false;
    }
};

在activity_main.xml中

<RelativeLayout
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/coordinatorlayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FBF9F9"
tools:context=".view.HomeScreenActivity"
android:orientation="vertical">


<FrameLayout 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:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    android:padding="1dp"
    android:id="@+id/main_container">

</FrameLayout>

</RelativeLayout>

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如果你困在何处，请告诉我。如果这样做有效的话，请接受答案。

这非常简单

    NavigationUI.setupWithNavController(bottomNavigationView, hostNavController);
    bottomNavigationView.setOnNavigationItemReselectedListener(new BottomNavigationView.OnNavigationItemReselectedListener() {
        @Override
        public void onNavigationItemReselected(@NonNull MenuItem item) {
            // Nothing here to disable reselect
        }
    });

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在kotlin中，代码如下所示：

 val navView: BottomNavigationView = findViewById(R.id.nav_view)

 navView.setOnNavigationItemReselectedListener { 
    // do nothing here when reselected
    }

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选中@JimaleAbdi这将禁用切换模式而不是重新单击，我想禁用重新单击，因此如果我在主片段中并单击“主”选项卡，则什么都没有发生我已禁用重新加载底部导航视图，但不使用导航UI。我们必须在开始时加载片段，并且需要在单击特定选项卡时隐藏其他片段。这对我来说很好。@BrahmaDatta你能提供一个例子吗？当然可以@MohammadHoseinKalantarian。记住你必须在“设置WithNavController”之后进行操作