我创建了一些应用程序,我想要在其中插入一个BottomNavigationView。
这段代码本来运行得很好,但是一旦我将gradle更改为androidx,它就停止工作了。
我的布局中的组件(activity_about):
<android.support.design.widget.BottomNavigationView
android:id="@+id/bottom_navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:menu="@menu/bottom_navigation"
app:itemBackground="@color/colorWhite"
app:itemIconTint="@drawable/bottom_navigation_foreground"
app:itemTextColor="@drawable/bottom_navigation_foreground" />
菜单文件是:
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="@+id/navigation_library"
android:enabled="true"
app:showAsAction="ifRoom"
android:title="Library"
android:icon="@drawable/ic_home_black_24dp"/>
<item
android:id="@+id/navigation_search"
android:enabled="true"
app:showAsAction="ifRoom"
android:title="Search"
android:icon="@drawable/ic_search_black_24dp"/>
<item
android:id="@+id/navigation_profile"
android:enabled="true"
app:showAsAction="ifRoom"
android:title="Profile"
android:icon="@drawable/ic_account_circle_black_24dp"/>
</menu>
可绘制文件(bottom_navigation_foreground):
<?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/colorPurpleFont" />
<item android:state_checked="false" android:color="@color/Gray" />
</selector>
我的代码如下:
public class AboutActivity extends AppCompatActivity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_about);
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.navigation_library:
startActivity(new Intent(AboutActivity.this, DiscoverActivity.class));
break;
case R.id.navigation_search:
Toast.makeText(AboutActivity.this, "Favorites", Toast.LENGTH_SHORT).show();
break;
case R.id.navigation_profile:
Toast.makeText(AboutActivity.this, "Nearby", Toast.LENGTH_SHORT).show();
break;
}
return true;
}
});
}
}
自从我改用androidx之后,它为什么不工作了呢?
谢谢