我正在使用片段为API15构建一个Android应用.
布局为：
> activity_page_detail.xml
> activity_page_List.xml
> activity_page_twopane.xml
> fragment_page_detail.xml
Java文件是：
> pageDetailActivity.java
> pageDetailFragment.java
> PagelistActivity.java
> PagelistFragment.java
> DummyContent.java
在activity_page_detail.xml中：
<FrameLayout xmlns:androID="http://schemas.androID.com/apk/res/androID"xmlns:tools="http://schemas.androID.com/tools"androID:ID="@+ID/page_detail_container"androID:layout_wIDth="match_parent"androID:layout_height="match_parent"tools:context=".pageDetailActivity"tools:ignore="MergeRootFrame"/>在activity_page_List.xml中：
<?xml version="1.0" enCoding="utf-8"?><linearLayout xmlns:androID="http://schemas.androID.com/apk/res/androID"xmlns:tools="http://schemas.androID.com/tools"tools:ignore="contentDescription"androID:layout_wIDth="match_parent"androID:layout_height="match_parent"androID:orIEntation="vertical" androID:gravity="center"><ImageVIEw androID:ID="@+ID/logoimage" androID:layout_wIDth="wrap_content" androID:layout_height="wrap_content" androID:src="@drawable/logo" androID:layout_margintop="20dp" androID:layout_marginBottom="30dp"/><fragment androID:ID="@+ID/page_List" androID:name="com.application.trigger.PagelistFragment" androID:layout_wIDth="match_parent" androID:layout_height="match_parent" androID:layout_marginleft="16dp" androID:layout_marginRight="16dp" tools:context=".PagelistActivity" tools:layout="@androID:layout/List_content" /></linearLayout>并在activity_page_twopane.xml中：
<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"androID:layout_marginleft="16dp"androID:layout_marginRight="16dp"androID:baselineAligned="false"androID:divIDer="?androID:attr/divIDerHorizontal"androID:orIEntation="horizontal"androID:showdivIDers="mIDdle"tools:context=".PagelistActivity" ><!--This layout is a two-pane layout for the pagesmaster/detail flow. See res/values-large/refs.xml andres/values-sw600dp/refs.xml for an example of layout aliasesthat replace the single-pane version of the layout withthis two-pane version.For more on layout aliases, see:http://developer.androID.com/training/multiscreen/screensizes.HTML#TaskUseAliasFilters--><fragment androID:ID="@+ID/page_List" androID:name="com.application.trigger.PagelistFragment" androID:layout_wIDth="0dp" androID:layout_height="match_parent" androID:layout_weight="1" tools:layout="@androID:layout/List_content" /><FrameLayout androID:ID="@+ID/page_detail_container" androID:layout_wIDth="0dp" androID:layout_height="match_parent" androID:layout_weight="3" /></linearLayout>并在fragment_page_detail.xml中：
<linearLayout xmlns:androID="http://schemas.androID.com/apk/res/androID"xmlns:tools="http://schemas.androID.com/tools"tools:context=".pageDetailFragment"androID:layout_wIDth="match_parent"androID:layout_height="match_parent"androID:orIEntation="vertical" tools:ignore="contentDescription"androID:background="#000"><TextVIEw androID:ID="@+ID/page_detail" androID:layout_wIDth="match_parent" androID:layout_height="match_parent" androID:padding="16dp" androID:textcolor="#fafafa" androID:textIsSelectable="true" androID:textAppearance="@androID:attr/textAppearanceListItemSmall" /><linearLayout androID:ID="@+ID/linear_vertical" androID:layout_wIDth="match_parent" androID:layout_height="match_parent" androID:orIEntation="vertical" androID:background="#7f7f7f" /></linearLayout>Java源代码为：
package com.application.trigger;import androID.content.Intent;import androID.os.Bundle;import androID.support.v4.app.FragmentActivity;/** * An activity representing a List of pages. This activity * has different presentations for handset and tablet-size devices. On * handsets, the activity presents a List of items, which when touched, * lead to a {@link pageDetailActivity} representing * item details. On tablets, the activity presents the List of items and * item details sIDe-by-sIDe using two vertical panes. * <p> * The activity makes heavy use of fragments. The List of items is a * {@link PagelistFragment} and the item details * (if present) is a {@link pageDetailFragment}. * <p> * This activity also implements the required * {@link PagelistFragment.Callbacks} interface * to Listen for item selections. */public class PagelistActivity extends FragmentActivity implements PagelistFragment.Callbacks {/** * Whether or not the activity is in two-pane mode, i.e. running on a tablet * device. */private boolean mTwoPane;@OverrIDeprotected voID onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentVIEw(R.layout.activity_page_List); if (findVIEwByID(R.ID.page_detail_container) != null) { // The detail container vIEw will be present only in the // large-screen layouts (res/values-large and // res/values-sw600dp). If this vIEw is present, then the // activity should be in two-pane mode. mTwoPane = true; // In two-pane mode, List items should be given the // 'activated' state when touched. ((PagelistFragment) getSupportFragmentManager() .findFragmentByID(R.ID.page_List)) .setActivateOnItemClick(true); } // Todo: If exposing deep links into your app, handle intents here.}/** * Callback method from {@link PagelistFragment.Callbacks} * indicating that the item with the given ID was selected. */@OverrIDepublic voID onItemSelected(String ID) { if (mTwoPane) { // In two-pane mode, show the detail vIEw in this activity by // adding or replacing the detail fragment using a // fragment transaction. Bundle arguments = new Bundle(); arguments.putString(pageDetailFragment.ARG_ITEM_ID, ID); pageDetailFragment fragment = new pageDetailFragment(); fragment.setArguments(arguments); getSupportFragmentManager().beginTransaction() .replace(R.ID.page_detail_container, fragment) .commit(); } else { // In single-pane mode, simply start the detail activity // for the selected item ID. Intent detailintent = new Intent(this, pageDetailActivity.class); detailintent.putExtra(pageDetailFragment.ARG_ITEM_ID, ID); startActivity(detailintent); }}}和
package com.application.trigger;import androID.app.Activity;import androID.os.Bundle;import androID.support.v4.app.ListFragment;import androID.vIEw.VIEw;import androID.Widget.ArrayAdapter;import androID.Widget.ListVIEw;import com.application.trigger.dummy.DummyContent;/** * A List fragment representing a List of pages. This fragment * also supports tablet devices by allowing List items to be given an * 'activated' state upon selection. This helps indicate which item is * currently being vIEwed in a {@link pageDetailFragment}. * <p> * ActivitIEs containing this fragment MUST implement the {@link Callbacks} * interface. */public class PagelistFragment extends ListFragment {/** * The serialization (saved instance state) Bundle key representing the * activated item position. Only used on tablets. */private static final String STATE_ACTIVATED_position = "activated_position";/** * The fragment's current callback object, which is notifIEd of List item * clicks. */private Callbacks mCallbacks = sDummyCallbacks;/** * The current activated item position. Only used on tablets. */private int mActivatedposition = ListVIEw.INVALID_position;/** * A callback interface that all activitIEs containing this fragment must * implement. This mechanism allows activitIEs to be notifIEd of item * selections. */public interface Callbacks { /** * Callback for when an item has been selected. */ public voID onItemSelected(String ID);}/** * A dummy implementation of the {@link Callbacks} interface that does * nothing. Used only when this fragment is not attached to an activity. */private static Callbacks sDummyCallbacks = new Callbacks() { @OverrIDe public voID onItemSelected(String ID) { }};/** * Mandatory empty constructor for the fragment manager to instantiate the * fragment (e.g. upon screen orIEntation changes). */public PagelistFragment() {}@OverrIDepublic voID onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Todo: replace with a real List adapter. setlistadapter(new ArrayAdapter<DummyContent.DummyItem>( getActivity(), androID.R.layout.simple_List_item_activated_1, androID.R.ID.text1, DummyContent.ITEMS));}@OverrIDepublic voID onVIEwCreated(VIEw vIEw, Bundle savedInstanceState) { super.onVIEwCreated(vIEw, savedInstanceState); // Restore the prevIoUsly serialized activated item position. if (savedInstanceState != null && savedInstanceState.containsKey(STATE_ACTIVATED_position)) { setActivatedposition(savedInstanceState.getInt(STATE_ACTIVATED_position)); }}@OverrIDepublic voID onAttach(Activity activity) { super.onAttach(activity); // ActivitIEs containing this fragment must implement its callbacks. if (!(activity instanceof Callbacks)) { throw new IllegalStateException("Activity must implement fragment's callbacks."); } mCallbacks = (Callbacks) activity;}@OverrIDepublic voID onDetach() { super.onDetach(); // reset the active callbacks interface to the dummy implementation. mCallbacks = sDummyCallbacks;}@OverrIDepublic voID onListItemClick(ListVIEw ListVIEw, VIEw vIEw, int position, long ID) { super.onListItemClick(ListVIEw, vIEw, position, ID); // Notify the active callbacks interface (the activity, if the // fragment is attached to one) that an item has been selected. mCallbacks.onItemSelected(DummyContent.ITEMS.get(position).ID);}@OverrIDepublic voID onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); if (mActivatedposition != ListVIEw.INVALID_position) { // Serialize and persist the activated item position. outState.putInt(STATE_ACTIVATED_position, mActivatedposition); }}/** * Turns on activate-on-click mode. When this mode is on, List items will be * given the 'activated' state when touched. */public voID setActivateOnItemClick(boolean activateOnItemClick) { // When setting CHOICE_MODE_SINGLE, ListVIEw will automatically // give items the 'activated' state when touched. getListVIEw().setChoiceMode(activateOnItemClick ? ListVIEw.CHOICE_MODE_SINGLE : ListVIEw.CHOICE_MODE_NONE);}private voID setActivatedposition(int position) { if (position == ListVIEw.INVALID_position) { getListVIEw().setItemChecked(mActivatedposition, false); } else { getListVIEw().setItemChecked(position, true); } mActivatedposition = position;}}和：
package com.application.trigger; import androID.content.Intent; import androID.os.Bundle; import androID.support.v4.app.FragmentActivity; import androID.support.v4.app.NavUtils; import androID.vIEw.MenuItem; /** * An activity representing a single page detail screen. This * activity is only used on handset devices. On tablet-size devices, * item details are presented sIDe-by-sIDe with a List of items * in a {@link PagelistActivity}. * <p> * This activity is mostly just a 'shell' activity containing nothing * more than a {@link pageDetailFragment}. */ public class pageDetailActivity extends FragmentActivity { @OverrIDe protected voID onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentVIEw(R.layout.activity_page_detail); // Show the Up button in the action bar. getActionbar().setdisplayHomeAsUpEnabled(true); // savedInstanceState is non-null when there is fragment state // saved from prevIoUs configurations of this activity // (e.g. when rotating the screen from portrait to landscape). // In this case, the fragment will automatically be re-added // to its container so we don't need to manually add it. // For more information, see the Fragments API guIDe at: // // http://developer.androID.com/guIDe/components/fragments.HTML // if (savedInstanceState == null) { // Create the detail fragment and add it to the activity // using a fragment transaction. Bundle arguments = new Bundle(); arguments.putString(pageDetailFragment.ARG_ITEM_ID, getIntent().getStringExtra(pageDetailFragment.ARG_ITEM_ID)); pageDetailFragment fragment = new pageDetailFragment(); fragment.setArguments(arguments); getSupportFragmentManager().beginTransaction() .add(R.ID.page_detail_container, fragment) .commit(); } } @OverrIDe public boolean onoptionsItemSelected(MenuItem item) { switch (item.getItemID()) { case androID.R.ID.home: // This ID represents the Home or Up button. In the case of this // activity, the Up button is shown. Use NavUtils to allow users // to navigate up one level in the application structure. For // more details, see the Navigation pattern on AndroID Design: // // http://developer.androID.com/design/patterns/navigation.HTML#up-vs-back // NavUtils.navigateUpTo(this, new Intent(this, PagelistActivity.class)); return true; } return super.onoptionsItemSelected(item); } }和：
package com.application.trigger.dummy;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;/** * Helper class for provIDing sample content for user interfaces created by * AndroID template wizards. * <p> * Todo: Replace all uses of this class before publishing your app. */public class DummyContent {/** * An array of sample (dummy) items. */public static List<DummyItem> ITEMS = new ArrayList<DummyItem>();/** * A map of sample (dummy) items, by ID. */public static Map<String, DummyItem> ITEM_MAP = new HashMap<String, DummyItem>();static { // Add 3 sample items. addItem(new DummyItem("1", "ListItem-1")); addItem(new DummyItem("2", "ListItem-2")); addItem(new DummyItem("3", "ListItem-3")); addItem(new DummyItem("4", "ListItem-4")); addItem(new DummyItem("5", "ListItem-5"));}private static voID addItem(DummyItem item) { ITEMS.add(item); ITEM_MAP.put(item.ID, item);}/** * A dummy item representing a pIEce of content. */public static class DummyItem { public String ID; public String content; public DummyItem(String ID, String content) { this.ID = ID; this.content = content; } @OverrIDe public String toString() { return content; }}}最后,与我的问题相关的代码文件是：
package com.application.trigger; import java.util.ArrayList; import androID.content.ContentValues; import androID.content.Intent; import androID.os.Bundle; import androID.provIDer.ContactsContract; import androID.provIDer.ContactsContract.CommonDataKinds.Email; import androID.provIDer.ContactsContract.CommonDataKinds.Organization; import androID.provIDer.ContactsContract.CommonDataKinds.Phone; import androID.provIDer.ContactsContract.CommonDataKinds.Website; import androID.provIDer.ContactsContract.Data; import androID.provIDer.ContactsContract.Intents.Insert; import androID.support.v4.app.Fragment; import androID.vIEw.LayoutInflater; import androID.vIEw.VIEw; import androID.vIEw.VIEwGroup; import androID.vIEw.VIEwGroup.LayoutParams; import androID.Widget.ImageVIEw; import androID.Widget.linearLayout; import androID.Widget.TextVIEw; import com.application.trigger.dummy.DummyContent; /** * A fragment representing a single page detail screen. * This fragment is either contained in a {@link PagelistActivity} * in two-pane mode (on tablets) or a {@link pageDetailActivity} * on handsets. */ public class pageDetailFragment extends Fragment { /** * The fragment argument representing the item ID that this fragment * represents. */ public static final String ARG_ITEM_ID = "item_ID"; /** * The dummy content this fragment is presenting. */ private DummyContent.DummyItem mItem; /** * Mandatory empty constructor for the fragment manager to instantiate the * fragment (e.g. upon screen orIEntation changes). */ public pageDetailFragment() { } @OverrIDe public voID onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (getArguments().containsKey(ARG_ITEM_ID)) { // Load the dummy content specifIEd by the fragment // arguments. In a real-world scenario, use a Loader // to load content from a content provIDer. mItem = DummyContent.ITEM_MAP.get(getArguments().getString(ARG_ITEM_ID)); getActivity().setTitle(mItem.content); } } @OverrIDe public VIEw onCreateVIEw(LayoutInflater inflater, VIEwGroup container, Bundle savedInstanceState) { VIEw rootVIEw = inflater.inflate(R.layout.fragment_page_detail, container, false); // show each product specification //passing data to each page if (mItem != null) { switch (Integer.parseInt(mItem.ID)) { case 1: ((TextVIEw) rootVIEw.findVIEwByID(R.ID.page_detail)) .setText("show text1"); final linearLayout row1 = new linearLayout(getActivity()); row1.setorIEntation(linearLayout.HORIZONTAL); row1.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT)); row1.setVisibility(VIEw.VISIBLE); final TextVIEw text1 = new TextVIEw(getActivity()); text1.setText("some sample text"); text1.setVisibility(VIEw.VISIBLE); final ImageVIEw image1 = new ImageVIEw(getActivity()); image1.setVisibility(VIEw.VISIBLE); image1.setimageResource(R.drawable.logo); row1.addVIEw(text1); row1.addVIEw(image1); //linearLayout vertical = (linearLayout) rootVIEw.findVIEwByID(R.ID.linear_vertical); //vertical.addVIEw(row1); ((VIEwGroup)rootVIEw).addVIEw(row1); break; case 2: ((TextVIEw) rootVIEw.findVIEwByID(R.ID.page_detail)) .setText("show text2"); break; case 3: ((TextVIEw) rootVIEw.findVIEwByID(R.ID.page_detail)) .setText("show text3"); break; case 4: Intent contact = new Intent(Intent.ACTION_INSERT); contact.setType(ContactsContract.Contacts.CONTENT_TYPE); ArrayList<ContentValues> data = new ArrayList<ContentValues>(); ContentValues company = new ContentValues(); company.put(Data.MIMETYPE, Organization.CONTENT_ITEM_TYPE); company.put(Organization.COMPANY, "company name"); data.add(company); ContentValues mobile = new ContentValues(); mobile.put(Data.MIMETYPE, Phone.CONTENT_ITEM_TYPE); mobile.put(Phone.NUMBER, "9898989898"); data.add(mobile); ContentValues phone = new ContentValues(); phone.put(Data.MIMETYPE, Phone.CONTENT_ITEM_TYPE); phone.put(Phone.TYPE, Phone.TYPE_WORK); phone.put(Phone.NUMBER, "9898989898"); data.add(phone); ContentValues email = new ContentValues(); email.put(Data.MIMETYPE, Email.CONTENT_ITEM_TYPE); email.put(Email.TYPE, Email.TYPE_WORK); email.put(Email.ADDRESS, "[email protected]"); data.add(email); ContentValues website = new ContentValues(); website.put(Data.MIMETYPE, Website.CONTENT_ITEM_TYPE); website.put(Website.URL, "http://company.com"); data.add(website); contact.putParcelableArrayListExtra(Insert.DATA, data); int request_Code = 100; startActivityForResult(contact, request_Code); break; case 5: ((TextVIEw) rootVIEw.findVIEwByID(R.ID.page_detail)) .setText("show text5"); break; } } return rootVIEw; } }问题是如何在onCreateVIEw方法中以编程方式为最后一个Java代码中的每个片段详细信息添加视图？在案例1中提到的功能处的“我的代码”退出了程序,无法正常工作.
这是相关的堆栈跟踪：
08-04 06:19:35.623: DEBUG/dalvikvm(1153): GC_CONCURRENT freed 84K, 3% free 9379K/9607K, paused 4ms+4ms08-04 06:19:39.283: WARN/WindowManager(89): Failure taking screenshot for (180x300) to layer 2101508-04 06:19:43.063: INFO/ActivityManager(89): START {cmp=com.application.trigger/.pageDetailActivity (has extras)} from pID 115308-04 06:19:43.074: WARN/WindowManager(89): Failure taking screenshot for (180x300) to layer 2101008-04 06:19:43.233: DEBUG/AndroIDRuntime(1153): Shutting down VM08-04 06:19:43.233: WARN/dalvikvm(1153): threadID=1: thread exiting with uncaught exception (group=0x2ba041f8)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): FATAL EXCEPTION: main08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.application.trigger/com.application.trigger.pageDetailActivity}: java.lang.IllegalStateException: The specifIEd child already has a parent. You must call removeVIEw() on the child's parent first.08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.app.ActivityThread.performlaunchActivity(ActivityThread.java:1956)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.app.ActivityThread.access0(ActivityThread.java:123)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.os.Handler.dispatchMessage(Handler.java:99)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.os.Looper.loop(Looper.java:137)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.app.ActivityThread.main(ActivityThread.java:4424)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at java.lang.reflect.Method.invokeNative(Native Method)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at java.lang.reflect.Method.invoke(Method.java:511)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at com.androID.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at com.androID.internal.os.ZygoteInit.main(ZygoteInit.java:551)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at dalvik.system.NativeStart.main(Native Method)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): Caused by: java.lang.IllegalStateException: The specifIEd child already has a parent. You must call removeVIEw() on the child's parent first.08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.vIEw.VIEwGroup.addVIEwInner(VIEwGroup.java:3337)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.vIEw.VIEwGroup.addVIEw(VIEwGroup.java:3208)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.vIEw.VIEwGroup.addVIEw(VIEwGroup.java:3165)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.vIEw.VIEwGroup.addVIEw(VIEwGroup.java:3145)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at com.application.trigger.pageDetailFragment.onCreateVIEw(pageDetailFragment.java:98)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.support.v4.app.Fragment.performCreateVIEw(Fragment.java:1478)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.support.v4.app.FragmentManagerImpl.movetoState(FragmentManager.java:927)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.support.v4.app.FragmentManagerImpl.movetoState(FragmentManager.java:1104)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1460)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:556)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.app.Instrumentation.callActivityOnStart(Instrumentation.java:1133)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.app.Activity.performStart(Activity.java:4475)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): at androID.app.ActivityThread.performlaunchActivity(ActivityThread.java:1929)08-04 06:19:43.265: ERROR/AndroIDRuntime(1153): ... 11 more08-04 06:19:43.293: WARN/ActivityManager(89): Force finishing activity com.application.trigger/.pageDetailActivity08-04 06:19:43.323: WARN/ActivityManager(89): Force finishing activity com.application.trigger/.PagelistActivity08-04 06:19:43.633: INFO/Process(89): Sending signal. PID: 1153 SIG: 3解决方法:
堆栈跟踪明确表明问题是您试图将已附加到VIEwGroup(其父级)的VIEw添加到另一个VIEwGroup.
一个视图不能有两个不同的父级,因此会出现错误.
您可以先将视图从其父视图中移除,然后再将其添加到新的父视图中,也可以简单地多次膨胀相同的XML.如果您将一种XML膨胀更多,那么您将创建新的VIEw对象,并且可以将它们附加到其他父对象.
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