我正在尝试学习Android Studio，以制作可在Android中运行的程序。我尝试通过这种方式将FrameLayout扩展为LinearLayout（代码位于 - ＆gt; HotelListFragment.java）：
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(mContext);
View view = inflater.inflate(R.layout.list_row, parent, false);
return new ViewHolder(view, this);
}
但每次进入View view = inflater.inflate(R.layout.list_row, parent, false)我都会收到此错误：
android.view.InflateException: Binary XML file line #40: Error inflating class TextView
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:719)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:761)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:769)
at android.view.LayoutInflater.inflate(LayoutInflater.java:498)
at android.view.LayoutInflater.inflate(LayoutInflater.java:398)
at com.global.wins.ui.HotelListFragment$AttractionAdapter.onCreateViewHolder(HotelListFragment.java:113)
at com.global.wins.ui.HotelListFragment$AttractionAdapter.onCreateViewHolder(HotelListFragment.java:98)
at android.support.v7.widget.RecyclerView$Adapter.createViewHolder(RecyclerView.java:4783)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4089)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:3999)
at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:1892)
at android.support.v7.widget.GridLayoutManager.layoutChunk(GridLayoutManager.java:419)
at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1301)
at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:534)
at android.support.v7.widget.GridLayoutManager.onLayoutChildren(GridLayoutManager.java:156)
at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:2411)
at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:2709)
at android.view.View.layout(View.java:15762)
at android.view.ViewGroup.layout(ViewGroup.java:4880)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1677)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1531)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1440)
at android.view.View.layout(View.java:15762)
at android.view.ViewGroup.layout(ViewGroup.java:4880)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:15762)
at android.view.ViewGroup.layout(ViewGroup.java:4880)
at android.support.v4.widget.DrawerLayout.onLayout(DrawerLayout.java:907)
at android.view.View.layout(View.java:15762)
at android.view.ViewGroup.layout(ViewGroup.java:4880)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:15762)
at android.view.ViewGroup.layout(ViewGroup.java:4880)
at android.support.v7.internal.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:493)
at android.view.View.layout(View.java:15762)
at android.view.ViewGroup.layout(ViewGroup.java:4880)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:15762)
at android.view.ViewGroup.layout(ViewGroup.java:4880)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1677)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1531)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1440)
at android.view.View.layout(View.java:15762)
at android.view.ViewGroup.layout(ViewGroup.java:4880)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:15762)
at android.view.ViewGroup.layout(ViewGroup.java:4880)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2356)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2069)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1254)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6637)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:814)
at android.view.Choreographer.doCallbacks(Choreographer.java:614)
at android.view.Ch
05-28 17:43:01.246 14785-14785/com.global.wins E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.global.wins, PID: 14785
android.view.InflateException: Binary XML file line #40: Error inflating class TextView
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:719)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:761)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:769)
at android.view.LayoutInflater.inflate(LayoutInflater.java:498)
at android.view.LayoutInflater.inflate(LayoutInflater.java:398)
at com.global.wins.ui.HotelListFragment$AttractionAdapter.onCreateViewHolder(HotelListFragment.java:113)
at com.global.wins.ui.HotelListFragment$AttractionAdapter.onCreateViewHolder(HotelListFragment.java:98)
at android.support.v7.widget.RecyclerView$Adapter.createViewHolder(RecyclerView.java:4783)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4089)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:3999)
at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:1892)
at android.support.v7.widget.GridLayoutManager.layoutChunk(GridLayoutManager.java:419)
at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1301)
at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:534)
at android.support.v7.widget.GridLayoutManager.onLayoutChildren(GridLayoutManager.java:156)
at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:2411)
at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:2709)
at android.view.View.layout(View.java:15762)
at android.view.ViewGroup.layout(ViewGroup.java:4880)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1677)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1531)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1440)
at android.view.View.layout(View.java:15762)
at android.view.ViewGroup.layout(ViewGroup.java:4880)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:15762)
at android.view.ViewGroup.layout(ViewGroup.java:4880)
at android.support.v4.widget.DrawerLayout.onLayout(DrawerLayout.java:907)
at android.view.View.layout(View.java:15762)
at android.view.ViewGroup.layout(ViewGroup.java:4880)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:15762)
at android.view.ViewGroup.layout(ViewGroup.java:4880)
at android.support.v7.internal.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:493)
at android.view.View.layout(View.java:15762)
at android.view.ViewGroup.layout(ViewGroup.java:4880)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:15762)
at android.view.ViewGroup.layout(ViewGroup.java:4880)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1677)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1531)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1440)
at android.view.View.layout(View.java:15762)
at android.view.ViewGroup.layout(ViewGroup.java:4880)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:15762)
at android.view.ViewGroup.layout(ViewGroup.java:4880)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2356)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2069)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1254)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6637)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:814)
at android.view.Choreographer.doCallbacks(Choreographer.java:614)
at android.view.Ch
这是我的main.xml：
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Main">
<FrameLayout android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<FrameLayout
android:id="@+id/navigation_drawer"
android:layout_width="@dimen/navigation_drawer_width"
android:layout_height="match_parent"
android:layout_gravity="start"
class="com.global.wins.ui.HotelListFragment"
tools:layout="@layout/fragment_drawer" />
这是我的HotelListFragment.java：
public class HotelListFragment extends Fragment {
private AttractionAdapter mAdapter;
private int mImageSize;
public HotelListFragment() {}
private String country;
private View mFragmentContainerView;
private DrawerLayout mDrawerLayout;
private ActionBarDrawerToggle mDrawerToggle;
private boolean mUserLearnedDrawer;
private boolean mFromSavedInstanceState;
private static final String STATE_SELECTED_POSITION = "selected_navigation_drawer_position";
private static final String PREF_USER_LEARNED_DRAWER = "navigation_drawer_learned";
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Load a larger size image to make the activity transition to the detail screen smooth
mImageSize = getResources().getDimensionPixelSize(R.dimen.image_size)
* Constants.IMAGE_ANIM_MULTIPLIER;
country = TouristAttractions.COUNTRY;
List<Attraction> attractions = ATTRACTIONS.get(country);
mAdapter = new AttractionAdapter(getActivity(), attractions);
View view = inflater.inflate(R.layout.fragment_list_hotel, container, false);
AttractionsRecyclerView recyclerView =
(AttractionsRecyclerView) view.findViewById(android.R.id.list);
recyclerView.setEmptyView(view.findViewById(android.R.id.empty));
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new GridLayoutManager(
getActivity(), getResources().getInteger(R.integer.list_columns)));
recyclerView.setAdapter(mAdapter);
return view;
}
private class AttractionAdapter extends RecyclerView.Adapter<ViewHolder>
implements ItemClickListener {
public List<Attraction> mAttractionList;
private Context mContext;
public AttractionAdapter(Context context, List<Attraction> attractions)
{
super();
mContext = context;
mAttractionList = attractions;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(mContext);
View view = inflater.inflate(R.layout.list_row, parent, false);
return new ViewHolder(view, this);
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
Attraction attraction = mAttractionList.get(position);
holder.mTitleTextView.setText(attraction.name);
holder.mDescriptionTextView.setText(attraction.description);
Glide.with(mContext)
.load(attraction.imageUrl)
.diskCacheStrategy(DiskCacheStrategy.SOURCE)
.placeholder(R.drawable.empty_photo)
.override(mImageSize, mImageSize)
.into(holder.mImageView);
if (TextUtils.isEmpty(country)) {
holder.mOverlayTextView.setVisibility(View.GONE);
} else {
holder.mOverlayTextView.setVisibility(View.VISIBLE);
holder.mOverlayTextView.setText("Visit");
}
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public int getItemCount() {
return mAttractionList == null ? 0 : mAttractionList.size();
}
@Override
public void onItemClick(View view, int position) {
View heroView = view.findViewById(android.R.id.icon);
DetailActivity.launch(
getActivity(), mAdapter.mAttractionList.get(position).name, heroView);
}
}
private static class ViewHolder extends RecyclerView.ViewHolder
implements View.OnClickListener {
TextView mTitleTextView;
TextView mDescriptionTextView;
TextView mOverlayTextView;
ImageView mImageView;
ItemClickListener mItemClickListener;
public ViewHolder(View view, ItemClickListener itemClickListener) {
super(view);
mTitleTextView = (TextView) view.findViewById(android.R.id.text1);
mDescriptionTextView = (TextView) view.findViewById(android.R.id.text2);
mOverlayTextView = (TextView) view.findViewById(R.id.overlaytext);
mImageView = (ImageView) view.findViewById(android.R.id.icon);
mItemClickListener = itemClickListener;
view.setOnClickListener(this);
}
@Override
public void onClick(View v) {
mItemClickListener.onItemClick(v, getPosition());
}
}
interface ItemClickListener {
void onItemClick(View view, int position);
}
public void setUp(int fragmentId, DrawerLayout drawerLayout) {
mFragmentContainerView = getActivity().findViewById(fragmentId);
mDrawerLayout = drawerLayout;
// set a custom shadow that overlays the main content when the drawer opens
mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
// set up the drawer's list view with items and click listener
ActionBar actionBar = getActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setHomeButtonEnabled(true);
// ActionBarDrawerToggle ties together the the proper interactions
// between the navigation drawer and the action bar app icon.
mDrawerToggle = new ActionBarDrawerToggle(
getActivity(), /* host Activity */
mDrawerLayout, /* DrawerLayout object */
R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */
R.string.navigation_drawer_open, /* "open drawer" description for accessibility */
R.string.navigation_drawer_close /* "close drawer" description for accessibility */
) {
@Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
if (!isAdded()) {
return;
}
getActivity().supportInvalidateOptionsMenu(); // calls onPrepareOptionsMenu()
}
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
if (!isAdded()) {
return;
}
if (!mUserLearnedDrawer) {
// The user manually opened the drawer; store this flag to prevent auto-showing
// the navigation drawer automatically in the future.
mUserLearnedDrawer = true;
SharedPreferences sp = PreferenceManager
.getDefaultSharedPreferences(getActivity());
sp.edit().putBoolean(PREF_USER_LEARNED_DRAWER, true).apply();
}
getActivity().supportInvalidateOptionsMenu(); // calls onPrepareOptionsMenu()
}
};
// If the user hasn't 'learned' about the drawer, open it to introduce them to the drawer,
// per the navigation drawer design guidelines.
if (!mUserLearnedDrawer && !mFromSavedInstanceState) {
mDrawerLayout.openDrawer(mFragmentContainerView);
}
// Defer code dependent on restoration of previous instance state.
mDrawerLayout.post(new Runnable() {
@Override
public void run() {
mDrawerToggle.syncState();
}
});
mDrawerLayout.setDrawerListener(mDrawerToggle);
}
private ActionBar getActionBar() {
return ((ActionBarActivity) getActivity()).getSupportActionBar();
}
}
这是我的list_row.xml：
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:foreground="?attr/selectableItemBackground"
android:layout_height="@dimen/image_size">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/relativeLayoutTravel">
<ImageView
android:id="@android:id/icon"
android:layout_width="@dimen/image_size"
android:layout_height="match_parent"
android:src="@drawable/empty_photo"
android:scaleType="centerCrop"
android:contentDescription="@string/description"
android:transitionName="image" />
<TextView
android:id="@+id/overlaytext"
android:layout_width="@dimen/image_size"
android:layout_height="wrap_content"
android:layout_alignBottom="@android:id/icon"
android:gravity="center"
android:padding="@dimen/tiny_margin"
style="?android:textAppearanceSmallInverse"
android:background="@color/text_background"
tools:text="Overlay"/>
<TextView
android:id="@android:id/text1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_toRightOf="@android:id/icon"
android:paddingTop="@dimen/small_margin"
android:paddingLeft="@dimen/small_margin"
android:paddingRight="@dimen/small_margin"
android:maxLines="1"
android:ellipsize="end"
style="?android:textAppearanceMedium"
tools:text="Title 1"
android:transitionName="image" />
<TextView
android:id="@android:id/text2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="@dimen/small_margin"
android:ellipsize="end"
android:maxLines="4"
style="?android:textAppearanceSmall"
tools:text="Description goes here"
android:layout_toEndOf="@android:id/icon"
android:layout_below="@android:id/text1" />
</RelativeLayout>
</FrameLayout>
有人会帮助我吗？因为我不知道还有什么我必须做的。