Как использовать навигационную запись (Navhostfragment) и DataBinding в активности? ⇐ Android

[Anonymous]

Я хочу использовать DataBinding при входе в навигацию.
Когда я использую фрагмент Android: name = "Navhostfragment" < /code> В этом деятельности программа может работать нормально;
Но когда я использую фрагмент в Antication Android: name = "Navhostfragment" < /code> + DataBinding, программа не будет выполнять. Навигация, пожалуйста, скажите мне, как его использовать?java.lang.RuntimeException: Unable to start activity
ComponentInfo{com.example.appnavigationtodo/com.example.appnavigationtodo.MainActivity}:
android.view.InflateException: Binary XML file line #21: Binary XML
file line #21: Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3092)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3235)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1926)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:6990)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1445)
Caused by: android.view.InflateException: Binary XML file line #21: Binary XML file line #21: Error inflating class fragment
Caused by: android.view.InflateException: Binary XML file line #21: Error inflating class fragment
Caused by: java.lang.IllegalArgumentException: Binary XML file line #21: Duplicate id 0x7f080050, tag null, or parent id 0xffffffff
with another fragment for androidx.navigation.fragment.NavHostFragment
at androidx.fragment.app.FragmentManagerImpl.onCreateView(FragmentManager.java:3752)
at androidx.fragment.app.FragmentController.onCreateView(FragmentController.java:120)
at androidx.fragment.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:405)
at androidx.fragment.app.FragmentActivity.onCreateView(FragmentActivity.java:387)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:780)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:863)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824)
at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:469)
at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at androidx.databinding.DataBindingUtil.setContentView(DataBindingUtil.java:303)
at androidx.databinding.DataBindingUtil.setContentView(DataBindingUtil.java:284)
at com.example.appnavigationtodo.MainActivity.onCreate(MainActivity.java:25)
at android.app.Activity.performCreate(Activity.java:7326)
at android.app.Activity.performCreate(Activity.java:7317)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3072)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3235)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1926)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:6990)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1445)
< /code>
MainActivity.java ：
public class MainActivity extends AppCompatActivity {
private ActivityMainBinding activityMainBinding;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
activityMainBinding = DataBindingUtil.setContentView(this, R.layout.activity_main);
}
}
< /code>
activity_main.xml ：











Подробнее здесь: https://stackoverflow.com/questions/574 ... n-activity