viewpager 中的片段,未找到视图错误
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【中文标题】viewpager 中的片段,未找到视图错误【英文标题】:fragments in viewpager, no view found error 【发布时间】:2015-05-05 16:07:03 【问题描述】:我有一个活动持有一个片段,在这个片段中有一个按钮,当它被点击时,会弹出一个对话框。
在这个对话框中,有一个 Viewpager,它包含一些要显示的片段。
这是代码和错误,请抽出宝贵的时间告诉我我错在哪里。非常感谢您的帮助。
MainActivity.class
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
public class MainActivity extends FragmentActivity
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
FragmentManager fm = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fm.beginTransaction();
MyFragment fragment = new MyFragment();
fragmentTransaction.add(R.id.container, fragment);
fragmentTransaction.commit();
MyFragment.class
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
public class MyFragment extends Fragment
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState)
View v = inflater.inflate(R.layout.fragment_sandbox, container, false);
Button button = (Button) v.findViewById(R.id.button);
button.setOnClickListener(new OnClickListener()
@Override
public void onClick(View arg0)
PagerDialog dialog = new PagerDialog(getActivity(),
getChildFragmentManager());
dialog.show();
);
return v;
PagerDialog.class
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
public class PagerDialog extends Dialog
ViewPager mViewPager;
FragmentStatePagerAdapter mAdapter;
FragmentManager mFragmentManager;
public PagerDialog(Context context, FragmentManager fm)
super(context);
mFragmentManager = fm;
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.dialog);
mViewPager = (ViewPager) findViewById(R.id.pager);
mAdapter = new MyAdapter(mFragmentManager);
mViewPager.setAdapter(mAdapter);
private class MyAdapter extends FragmentStatePagerAdapter
public MyAdapter(FragmentManager fm)
super(fm);
@Override
public Fragment getItem(int index)
return new DummyFragment();
@Override
public int getCount()
return 2;
private class DummyFragment extends Fragment
@Override
public View onCreateView(LayoutInflater inflater,
@Nullable ViewGroup container,
@Nullable Bundle savedInstanceState)
View v = inflater.inflate(R.layout.fragment_dummy_layout,
container, false);
return v;
这里是 dialog.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_
android:layout_
android:orientation="vertical" >
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_
android:layout_ />
</LinearLayout>
这是错误
03-06 19:43:38.487: E/AndroidRuntime(1167): FATAL EXCEPTION: main
03-06 19:43:38.487: E/AndroidRuntime(1167): Process: com.me.sandbox, PID: 1167
03-06 19:43:38.487: E/AndroidRuntime(1167): java.lang.IllegalArgumentException: No view found for id 0x7f05003d (com.mochimira.sandbox:id/pager) for fragment DummyFragmentb2d9f8c8 #0 id=0x7f05003d
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:939)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1126)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:739)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1489)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:486)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.support.v4.app.FragmentStatePagerAdapter.finishUpdate(FragmentStatePagerAdapter.java:163)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.support.v4.view.ViewPager.populate(ViewPager.java:1073)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.support.v4.view.ViewPager.populate(ViewPager.java:919)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1441)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.View.measure(View.java:16497)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.View.measure(View.java:16497)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.View.measure(View.java:16497)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.View.measure(View.java:16497)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.View.measure(View.java:16497)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
03-06 19:43:38.487: E/AndroidRuntime(1167): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2291)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.View.measure(View.java:16497)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1916)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1113)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1295)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1000)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5670)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.Choreographer.doCallbacks(Choreographer.java:574)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.Choreographer.doFrame(Choreographer.java:544)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.os.Handler.handleCallback(Handler.java:733)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.os.Handler.dispatchMessage(Handler.java:95)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.os.Looper.loop(Looper.java:136)
03-06 19:43:38.487: E/AndroidRuntime(1167): at android.app.ActivityThread.main(ActivityThread.java:5017)
03-06 19:43:38.487: E/AndroidRuntime(1167): at java.lang.reflect.Method.invokeNative(Native Method)
03-06 19:43:38.487: E/AndroidRuntime(1167): at java.lang.reflect.Method.invoke(Method.java:515)
03-06 19:43:38.487: E/AndroidRuntime(1167): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
03-06 19:43:38.487: E/AndroidRuntime(1167): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
03-06 19:43:38.487: E/AndroidRuntime(1167): at dalvik.system.NativeStart.main(Native Method
【问题讨论】:
我问的方式有什么问题吗?我没有你的答案。 嗯,不,我看不出你的问题有什么问题。但我没有看到明显的错误。问题似乎是您的对话框找不到的 ViewPager。您可以尝试将 Button 或 TextView 添加到 Dialog 而不是 Pager 吗? 在logcat中双击此错误行,将您带到导致此错误的行,然后在此处发布该行代码 @Deutro:我照你说的做了。我向对话框添加了一个按钮,而不是向对话框添加了寻呼机,它正常显示。没问题。你是对的,似乎是 ViewPager 无法被 Dialog 找到,但我不明白为什么。 @abforce:我已经更新了日志中的错误,请查看,当我双击错误行时。我无法进入代码,因为它在 android API 中并且它没有显示在我的 Eclipse 中。 【参考方案1】:我找到了问题的解决方案并修改了您的类,以便不再发生此错误。
唯一的主要区别是您应该使用DialogFragment
而不是Dialog
,这样您就可以调用getChildFragmentManager()
并从DialogFragment
接收正确的FragmentManager
。
即使您之前使用过getChildFragmentManager()
,它也来自MyFragment
,并且PagerDialog
类不是MyFragment
中的子片段。
我已经测试了下面的代码,现在应该可以正常工作了。
我的片段
public class MyFragment extends Fragment
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
View v = inflater.inflate(R.layout.fragment_sandbox, container, false);
Button button = (Button) v.findViewById(R.id.button);
button.setOnClickListener(new OnClickListener()
@Override
public void onClick(View arg0)
DialogFragment newFragment = PagerDialog.newInstance();
newFragment.show(getChildFragmentManager(), "dialog");
);
return v;
PagerDialog
public class PagerDialog extends DialogFragment
public static PagerDialog newInstance()
return new PagerDialog();
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
View v = inflater.inflate(R.layout.dialog_fragment, container, false);
ViewPager mViewPager = (ViewPager) v.findViewById(R.id.view_pager);
/* Use childFragmentManager here provided from the PagerDialog */
MyAdapter mAdapter = new MyAdapter(getChildFragmentManager());
mViewPager.setAdapter(mAdapter);
return v;
private class MyAdapter extends FragmentStatePagerAdapter
public MyAdapter(FragmentManager fm)
super(fm);
@Override
public Fragment getItem(int index)
return new DummyFragment();
@Override
public int getCount()
return 2;
虚拟片段
public class DummyFragment extends Fragment
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
View v = inflater.inflate(R.layout.fragment_dummy_layout, container, false);
return v;
fragment_sandbox.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_
android:layout_
android:gravity="center">
<Button
android:id="@+id/button"
android:layout_
android:layout_
android:text="Test Fragment Dialog Pager"
android:textSize="24sp"
android:padding="20dp" />
</LinearLayout>
dialog_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_
android:layout_
android:gravity="center"
android:orientation="vertical" >
<TextView
android:layout_
android:layout_
android:text="Fragment Dialog Title Text "
android:padding="10dp"
android:textColor="#333"
android:textSize="24sp"/>
<android.support.v4.view.ViewPager
android:id="@+id/view_pager"
android:layout_
android:layout_/>
</LinearLayout>
fragment_dummy_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_
android:layout_
android:gravity="center">
<TextView
android:layout_
android:layout_
android:text="Fragment Dummy Text"
android:textSize="24sp"
android:textColor="#ff0000"/>
</LinearLayout>
【讨论】:
非常感谢,稍后我会测试代码并反馈。 我已经测试了代码,完美,现在我明白了。谢谢!【参考方案2】:我在 Google 上找到了一篇博文,上面说 viewpager 在 Dialog 上不起作用。 它还说我们应该改用 DialogFragment。
这是该博客的链接:http://www.intellicode.in/viewpager-inside-dialog/
【讨论】:
感谢您的回答,我已将 ViewPager 替换为 Fragment 并且出现相同的错误:“未找到视图”。总结一下我的代码中的问题,ViewPager 不能在 Dialog 上工作,而且 Fragment 也不能在 Dialog 上工作。直觉上,对我来说,嵌套片段似乎有问题,但我无法弄清楚。【参考方案3】:getChildFragmentManager() 在您使用 v4 支持库时从 API 17 开始可用。尝试改用支持片段管理器:
PagerDialog dialog = new PagerDialog(getActivity(),
getActivity().getSupportFragmentManager());
【讨论】:
【参考方案4】:Dialog 类是对话框的基类,但应避免直接实例化 Dialog。相反,请使用以下子类之一:
AlertDialog 一个可以显示标题、最多三个按钮、可选项目列表或自定义布局的对话框。还有 DatePickerDialog 或 TimePickerDialog。
这些类定义了对话框的样式和结构,但您应该使用 DialogFragment 作为对话框的容器。 DialogFragment 类提供了创建对话框和管理其外观所需的所有控件,而不是调用 Dialog 对象上的方法。
更多详情请到Dialog Design
【讨论】:
【参考方案5】:错误听起来像是在 DummyFragment (fragment_dummy_layout.xml) 的 xml 文件中寻找 id 寻呼机。我想知道这是否是由于在与setContentView(R.layout.dialog);
相同的文件中调用了View v = inflater.inflate(R.layout.fragment_dummy_layout, container, false);
。您是否尝试过将 DummyFragment 分离到它自己的文件中?
你也可以试试
View v = getActivity().getLayoutInflater().inflate(R.layout.fragment_dummy_layout,
container, false);
【讨论】:
感谢您的帮助!【参考方案6】:尝试使用 DialogFragment 并将 getChildFragmentManager() 传递给 FragmentPagerAdapter 的 构造函数。
对话框片段:
public static class MyDialogFragment extends DialogFragment
private ViewPager viewPager;
MySectionPagerAdapter mAdapter;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
View view = inflater.inflate(R.layout.m_layout, container);
viewPager = (ViewPager) view.findViewById(R.id.viewpager);
mAdapter = new MySectionPagerAdapter(getChildFragmentManager());
viewPager.setAdapter(mAdapter);
return view;
【讨论】:
【参考方案7】:到目前为止,我们无法弄清楚为什么会出现错误,但我有办法解决这个问题,使用以下提示:
提示:如果您想要自定义对话框,则可以将 Activity 显示为对话框,而不是使用对话框 API。只需创建一个活动并将其主题设置为清单元素中的 Theme.Holo.Dialog:
<activity android:theme="@android:style/Theme.Holo.Dialog"
根据这个技巧,我不会让 PagerDialog 扩展 Dialog 而是从 Fragment 扩展。然后将这个 Fragment 放入一个 Activity 中,在 AndroidManifest.xml 中设置这个 Activity 的主题如上。
PagerDialog 的更新代码如下。
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class PagerDialog extends Fragment
ViewPager mViewPager;
FragmentStatePagerAdapter mAdapter;
@Override
public View onCreateView(LayoutInflater inflater,
@Nullable ViewGroup container, @Nullable Bundle savedInstanceState)
View v = inflater.inflate(R.id.dialog, container, false);
mViewPager = (ViewPager) v.findViewById(R.id.pager);
mAdapter = new MyAdapter(getFragmentManager());
mViewPager.setAdapter(mAdapter);
return v;
private class MyAdapter extends FragmentStatePagerAdapter
public MyAdapter(FragmentManager fm)
super(fm);
@Override
public Fragment getItem(int index)
return new DummyFragment();
@Override
public int getCount()
return 2;
private class DummyFragment extends Fragment
@Override
public View onCreateView(LayoutInflater inflater,
@Nullable ViewGroup container,
@Nullable Bundle savedInstanceState)
View v = inflater.inflate(R.layout.fragment_dummy_layout,
container, false);
return v;
如果您有更好的解决方案,或者您可以找出我问题中的原始代码为什么不起作用,请教我。我是 Android 编程的新手,很高兴向大家学习。
干杯。
【讨论】:
【参考方案8】:我想你用过
Dialog dialog = new Dialog(context);
支持这个。
第一步:使用DialogFragment
public class MyCustomDialog extends DialogFragment
Button mButton;
EditText mEditText;
List<MasterPageModel> listdata;
int position;
ViewPager viewpager;
public MyCustomDialog(List<MasterPageModel> listdata, int position)
this.listdata = listdata;
this.position = position;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
final View dialog = inflater.inflate(R.layout.dailoglayout, container);
final Dialog dailog = getDialog();
dailog.getWindow().setLayout(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
dailog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
dailog.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
ImageView closebtn = (ImageView) dialog.findViewById(R.id.closeimgeview);
closebtn.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
dailog.dismiss();
);
viewpager = (ViewPager) dialog.findViewById(R.id.dailog_viewpager);
**viewpager.setAdapter(new PagerAdapter(getChildFragmentManager(), listdata));** //This Line is Very important
viewpager.setCurrentItem(position);
return dialog;
@Override
public void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setStyle(DialogFragment.STYLE_NORMAL, android.R.style.Theme_Black_NoTitleBar_Fullscreen); //For Full Screen of DailogBox
第二步:设置FragmentViewPager
public class PagerAdapter extends FragmentPagerAdapter
private final List<MasterPageModel> pages;
public PagerAdapter(FragmentManager fm, List<MasterPageModel> pages)
super(fm);
this.pages = pages;
@Override
public Fragment getItem(int position)
return new ViewPagerFragment(pages.get(position));
@Override
public int getCount()
return pages.size();
第三步:ViewPager 的片段视图:
public class ViewPagerFragment extends Fragment
MasterPageModel masteDetailModel;
public ViewPagerFragment(MasterPageModel questionItem)
this.masteDetailModel = questionItem;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
View v = inflater.inflate(R.layout.pagerlayout, container, false);
ImageView image = (ImageView) v.findViewById(R.id.pager_imageview);
Log.i("Image", "=>" + masteDetailModel.imagelarge);
Picasso.with(getActivity()).load(masteDetailModel.imagethumb).error(R.drawable.img).into(image);
return v;
第四个如何使用这个对话片段:
MyCustomDialog fragment1 = new MyCustomDialog(listdata, position);
EditionDetailActivity act = (EditionDetailActivity) context;
FragmentManager fm = act.getSupportFragmentManager();
fragment1.show(fm, "");
【讨论】:
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