【发布时间】：2016-07-22 22:04:25
【问题描述】：
我有一个包含 RecyclerView 的片段 (SearchResultsFragment)。搜索结果被加载到 RecyclerView（这是一系列 CardViews）。
当用户选择一个 CardView 时，他们会被带到另一个片段 (EventDetailsFragment)，从中加载来自所选卡片的数据。所有这一切都很好，我现在唯一的问题是，当用户选择手机上的后退按钮时，应用程序崩溃，给我一个错误，表明 XML 文件不能被膨胀。
我怀疑这可能与我的 RecyclerView 有关。
E/UncaughtException: android.view.InflateException: Binary XML file line #18: Binary XML file line #18: Error inflating class fragment
我也收到此错误：
Caused by: java.lang.IllegalArgumentException: Binary XML file line #18: Duplicate id 0x7f0f0159, tag null, or parent id 0x7f0f0158 with another fragment for com.google.android.gms.location.places.ui.PlaceAutocompleteFragment
这是我的 SearchResultsFragment 上的代码：
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View currentView = inflater.inflate(R.layout.fragment_start_search, container, false);
resolvingError = savedInstanceState != null && savedInstanceState.getBoolean(RESOLVING_ERROR, false);
initializeComponents(currentView);
buildGoogleApi();
handlePermissions();
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
getDeviceSuggestedLocations();
}
return currentView;
}
private void initializeComponents(final View currentView) {
searchResultsRecyclerView = (RecyclerView) currentView.findViewById(R.id.EventSearchResultsRecyclerView);
searchResultsRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
autoCompleteFragment = (PlaceAutocompleteFragment) getChildFragmentManager().findFragmentById(R.id.GoogleSearchFragment);
autoCompleteFragment.setOnPlaceSelectedListener(new PlaceSelectionListener() {
@Override
public void onPlaceSelected(Place place) {
currentLocation = place.getName().toString();
selectedPlace = place;
processSearch();
}
@Override
public void onError(Status status) {
displayMessage("Error Getting Location", status.getStatusMessage());
}
});
}
这是按下后退按钮时无法膨胀的 XML 文件：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="Fragments.StartSearchFragment"
android:orientation="vertical"
>
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id ="@+id/SearchLinearLayout"
android:orientation="vertical">
<fragment
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id = "@+id/GoogleSearchFragment"
android:name="com.google.android.gms.location.places.ui.PlaceAutocompleteFragment"></fragment>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id = "@+id/EventSearchResultsRecyclerView"
android:layout_margin="5dp">
</android.support.v7.widget.RecyclerView>
</LinearLayout>
编辑：这是片段被热交换的 Activity (MainActivity) - 取决于选择的内容：
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
private Toolbar mainActivityToolbar;
private TextView toolbarTextView;
private ImageView toolbarImage;
private FragmentManager mgr;
private NavigationView navigationView;
private DrawerLayout drawerLayout;
private ActionBarDrawerToggle drawerToggle;
private SharedPreferences activityPreferences;
private SharedPreferences appSharedPreferences;
private SharedPreferences.Editor editor;
protected void onCreate(Bundle savedInstanceState) {
if (savedInstanceState == null) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initializeControls();
loadLandingScreenFragment();
} else {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initializeControls();
}
}
public void initializeControls()
{
mainActivityToolbar = (Toolbar) findViewById(R.id.MainActivityToolbar);
toolbarTextView = (TextView) findViewById(R.id.MainActivityTextView);
toolbarImage = (ImageView) findViewById(R.id.MainActivityImageView);
drawerLayout = (DrawerLayout) findViewById(R.id.menuDrawerLayout);
navigationView = (NavigationView) findViewById(R.id.mainActivityNavigationView);
setSupportActionBar(mainActivityToolbar);
getSupportActionBar().setTitle(null);
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDefaultDisplayHomeAsUpEnabled(true);
drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, mainActivityToolbar, R.string
.app_name, R
.string
.app_name);
drawerLayout.setDrawerListener(drawerToggle);
navigationView.inflateHeaderView(R.layout.navigation_menu_header);
navigationView.inflateMenu(R.menu.athlete_navigation_menu);
toolbarImage.setOnClickListener(this);
appSharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
activityPreferences = getSharedPreferences("iBaleka", MODE_PRIVATE);
editor = activityPreferences.edit();
NavigationMenuOnItemSelectedListener listener = new NavigationMenuOnItemSelectedListener
(this);
navigationView.setNavigationItemSelectedListener(listener);
toolbarImage.setImageResource(R.drawable.ibaleka_logo);
mgr = getFragmentManager();
mapComponents();
}
public void loadLandingScreenFragment()
{
AthleteLandingFragment landingFragment = new AthleteLandingFragment();
FragmentTransaction transaction = mgr.beginTransaction();
transaction.replace(R.id.MainActivityContentArea, landingFragment, "UserStats");
transaction.addToBackStack("UserStats");
transaction.commit();
}
private void mapComponents()
{
View headerView = navigationView.getHeaderView(0);
TextView athleteNameSurname = (TextView) headerView.findViewById(R.id.profileNameSurname);
TextView emailAddress = (TextView) headerView.findViewById(R.id.profileEmailAddress);
String nameSurname = appSharedPreferences.getString("Name", "") + " "+ appSharedPreferences.getString("Surname", "");
athleteNameSurname.setText(nameSurname);
emailAddress.setText(appSharedPreferences.getString("EmailAddress", "").toLowerCase());
}
@Override
protected void onPause() {
editor.putString("ToolbarText", toolbarTextView.getText().toString());
editor.commit();
super.onPause();
}
protected void onResume() {
super.onResume();
toolbarTextView.setText(activityPreferences.getString("ToolbarText", ""));
}
@Override
public void onBackPressed() {
if (mgr.getBackStackEntryCount() > 0) {
mgr.popBackStack();
} else {
super.onBackPressed();
}
}
【问题讨论】：
-
问题在于如何加载片段；你看，你在另一个片段中有一个片段 - 你需要研究如何从父片段中膨胀一个子片段
-
您能否展示您的活动代码（或任何包含相关片段的组件）？我怀疑您尝试添加片段两次，一次是在活动第一次开始时，一次是在您返回活动时。如果您确实以编程方式添加任何片段，则需要检查它们是否已存在于片段管理器中。
-
您活动的邮政编码。似乎 android:id = "@+id/GoogleSearchFragment" 添加了两次。一次在 xml 中，另一次在代码中。
-
我为我的 MainActivity 添加了代码 - 这是交换片段的地方。
-
你确定错误是inflate而不是它之后的代码
标签： android android-fragments layout-inflater android-inflate