23

我在我的应用程序中集成了底部栏导航栏。但是当我滑动时，标签的颜色不会改变。这很奇怪，因为我有选择器文件。有什么想法可以解决这个问题吗？

活动.java

BottomNavigationView bottomNavigationView = (BottomNavigationView)
            findViewById(R.id.bottom_navigation);


    bottomNavigationView.setOnNavigationItemSelectedListener(
            new BottomNavigationView.OnNavigationItemSelectedListener() {
                @Override
                public boolean onNavigationItemSelected(@NonNull MenuItem item) {
                    switch (item.getItemId()) {
                        case R.id.bb_menu_arac:
                            fragment = new AraclarimFragment();
                            break;
                        case R.id.bb_menu_yaklasan:
                            fragment = new YaklasanlarFragment();
                            break;
                        case R.id.bb_menu_yakin:
                            fragment = new Yakinimdakiler();
                            break;

                    }
                    final FragmentTransaction transaction = fragmentManager.beginTransaction();
                    transaction.replace(R.id.main_container, fragment).commit();
                    return true;
                }


            });

选择器.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:color="@color/beyaz" android:state_enabled="true" />
<item android:color="@color/colorPrimaryDark" android:state_enabled="false" />
</selector>

活动.xml

<android.support.design.widget.BottomNavigationView
    android:id="@+id/bottom_navigation"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="bottom|end"
    app:itemBackground="@color/colorPrimary"
    app:itemIconTint="@color/beyaz"
    app:itemTextColor="@color/beyaz"
    app:menu="@menu/bottombar_menu" />
4

3 回答 3

55

改成app:itemIconTint="@drawable/selector"

也改变你selector.xml这个：

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_checked="true" android:color="@color/beyaz" />
<item android:color="@color/colorPrimaryDark"  />
</selector>
于 2017-02-20T14:37:27.080 回答
4

尽管阅读了所有答案，但我对整个过程感到困惑，所以这是我逐步解决的方法，以便初学者可以正确理解

假设您MainActivity使用底部导航创建了

在您的drawable文件夹中创建bottom_navigation_selector.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:state_checked="true" android:color="@color/yourSelectedColor" />
  <item android:color="@color/defaultColor"  />
</selector>

然后转到activity_main.xml布局并将此行添加到BottomNavigationView

app:itemIconTint="@drawable/bottom_navigation_selector"

如果您还想相应地更改文本颜色，那么您还需要添加此行

app:itemTextColor="@drawable/bottom_navigation_selector"
于 2020-12-30T07:23:49.953 回答
3

您必须将选择器设置为 BottomNavigationView 的 itemIconTint。就像是

 <android.support.design.widget.BottomNavigationView
    android:id="@+id/bottom_navigation"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="bottom|end"
    app:itemBackground="@color/colorPrimary"
    app:itemIconTint="@drawable/selector"
    app:itemTextColor="@color/beyaz"
    app:menu="@menu/bottombar_menu" />
于 2017-02-20T14:34:55.247 回答