Java android.view.InflateException：二进制 XML 文件第 8 行：错误膨胀类片段

android.view.InflateException: Binary XML file line #8: Error inflating class fragment

提问by user3041833

I am trying to inflate a layout into a fragment and i have #8: Error inflating class fragment my View does not even creating it fall on the inflate how to inflate correctly the layout ?

我正在尝试将布局膨胀为片段，但我有 #8：错误膨胀类片段我的视图甚至没有创建它落在膨胀上 如何正确膨胀布局？

my XML large:

我的 XML 大：

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:baselineAligned="false">

        <fragment 
                  android:id="@+id/first_page"
                  android:layout_weight="1"
                  android:layout_width="0dp"
                  android:layout_height="match_parent"
                  class = "com.project.places.First_Page"   
                    />

        <fragment 
                  android:id="@+id/map"
                  android:layout_weight="2"
                  android:layout_width="0dp"
                  android:layout_height="match_parent"
                  android:name="com.project.places.Map_fragment"
                   />


    </LinearLayout>

my container :

我的容器：

    </FrameLayout>

my fragment layout:

我的片段布局：

android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="10sp" >

<ScrollView
    android:id="@+id/scrollView1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >



        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:padding="10dp" >

            <ImageButton
                android:id="@+id/search_By_Location"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:src="@drawable/location" />

            <TextView
                android:id="@+id/search_By_Location_TextView"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:text="Search By Your Current Location"
                android:textAppearance="?android:attr/textAppearanceLarge" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:padding="10dp" >

            <ImageButton
                android:id="@+id/search_By_City"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:src="@drawable/city_icon" />

            <TextView
                android:id="@+id/search_By_City_TextView"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:text="Search By City"
                android:textAppearance="?android:attr/textAppearanceLarge" />
        </LinearLayout><LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" android:padding="10dp">

            <ImageButton 
                android:id="@+id/favorits" 
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" 
                android:layout_gravity="center_horizontal" 
                android:src="@drawable/location_star"
                 />

            <TextView android:id="@+id/favorits_TextView"
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  android:layout_gravity="center_horizontal"
                  android:text="Browser Favorites"
                  android:textAppearance="?android:attr/textAppearanceLarge" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:padding="10dp" >

            <ImageButton
                android:id="@+id/history"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:src="@drawable/location_clock" />

            <TextView
                android:id="@+id/history_TextView"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:text="Browser History"
                android:textAppearance="?android:attr/textAppearanceLarge" />
          </LinearLayout>

       </LinearLayout>
   </ScrollView>

</LinearLayout>

java main :

爪哇主要：

    my class java first :


    package com.project.places;

    import android.app.Activity;
    import android.os.Bundle;
    import android.support.v4.app.Fragment;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.ImageButton;
    import android.widget.Toast;

    public class First_Page extends Fragment{


        onSearchTypeListener searchType_Callback;

        public interface onSearchTypeListener{
            public void searchTypeSelected(String type);
        }


        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
            return inflater.inflate(R.layout.first_page, container, false);
        }

        @Override
        public void onViewCreated(View view, Bundle savedInstanceState) {


            ImageButton by_city =(ImageButton)getActivity().findViewById(R.id.search_By_City);
            by_city.setOnClickListener(new View.OnClickListener() {

                @Override
                public void onClick(View v) {
                    //Toast.makeText(getActivity(), "by_city", Toast.LENGTH_SHORT).show();
                    searchType_Callback.searchTypeSelected("city");
                }
            });

            ImageButton by_location =(ImageButton)getActivity().findViewById(R.id.search_By_Location);
            by_location.setOnClickListener(new View.OnClickListener() {

                @Override
                public void onClick(View v) {
                    //Toast.makeText(getActivity(), "by_location", Toast.LENGTH_SHORT).show();
                    searchType_Callback.searchTypeSelected("location");

                }
            });

            ImageButton favorits =(ImageButton)getActivity().findViewById(R.id.favorits);
            favorits.setOnClickListener(new View.OnClickListener() {

                @Override
                public void onClick(View v) {
                    Toast.makeText(getActivity(), "favorits", Toast.LENGTH_SHORT).show();
                    searchType_Callback.searchTypeSelected("favorits");

                }
            });

            ImageButton history =(ImageButton)getActivity().findViewById(R.id.history);
            history.setOnClickListener(new View.OnClickListener() {

                @Override
                public void onClick(View v) {
                    Toast.makeText(getActivity(), "history", Toast.LENGTH_SHORT).show();
                    searchType_Callback.searchTypeSelected("history");

                }
            });
        }

        @Override
        public void onAttach(Activity activity) {
            super.onAttach(activity);

            try {
                searchType_Callback = (onSearchTypeListener)activity;
            } catch (ClassCastException e) {
                throw new ClassCastException(activity.toString() + " must implement onSearchTypeListener");
            }
        }

    }

the LOG file

日志文件

                01start activity ComponentInfoandroid.view.InflateException: Binary XML file line #8: Error inflating class fragment
-   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2306)
-   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2358)
-   at android.app.ActivityThread.access0(ActivityThread.java:156)
-   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1340)
-   at android.os.Handler.dispatchMessage(Handler.java:99)
-   at android.os.Looper.loop(Looper.java:153)
-   at android.app.ActivityThread.main(ActivityThread.java:5299)
-   at java.lang.reflect.Method.invokeNative(Native Method)
-   at java.lang.reflect.Method.invoke(Method.java:511)
-   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
-   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
-   at dalvik.system.NativeStart.main(Native Method)
- Caused by: android.view.InflateException: Binary XML file line #8: Error inflating class fragment
-   at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
-   at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
-   at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
-   at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
-   at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
-   at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:278)
-   at android.app.Activity.setContentView(Activity.java:1881)
-   at com.project.places.MainActivity.onCreate(MainActivity.java:18)
-   at android.app.Activity.performCreate(Activity.java:5122)
-   at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1081)
-   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2270)
-   ... 11 more
- Caused by: java.lang.NullPointerException
-   at com.project.places.First_Page.onViewCreated(First_Page.java:36)
-   at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:906)
-   at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1082)
-   at android.support.v4.app.FragmentManagerImpl.addFragment(FragmentManager.java:1184)
-   at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:291)
-   at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:676)
-   ... 21 more

回答by Henry

You need to use

你需要使用

android:name = "com.project.places.First_Page"

instead of

代替

class = "com.project.places.First_Page"

回答by laalto

Caused by: java.lang.NullPointerException - at com.project.places.First_Page.onViewCreated(First_Page.java:36

Caused by: java.lang.NullPointerException - at com.project.places.First_Page.onViewCreated(First_Page.java:36

In your onViewCreated()you should access the fragment UI views with view.findViewById()instead of getActivity().findViewById(). The fragment isn't attached to the activity yet so it's not found in the activity's view hierarchy either.

在您中，onViewCreated()您应该使用view.findViewById()而不是访问片段 UI 视图getActivity().findViewById()。该片段尚未附加到活动，因此在活动的视图层次结构中也找不到它。

回答by foxdot

<fragment 
    android:id="@+id/fragment_id"
    android:name="com.example.xxx.fragment.FragmentClassName"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    tools:layout="@layout/fragment_layout" />

Try to add android:name for your xml fragment:).It works to me.

尝试为您的 xml 片段添加 android:name :)。它对我有用。

回答by Acuna

I gets this error when tried to put the Activity to constructor like this:

尝试将 Activity 放入构造函数时出现此错误，如下所示：

public MyView (Activity activity) {
   super (activity);
}

public MyView (Activity activity, AttributeSet attrs) {
    super (activity, attrs);
}

Remember that you can only put a Context in custom views constructors like this:

请记住，您只能将 Context 放入自定义视图构造函数中，如下所示：

public MyView (Context context) {
   super (context);
}

public MyView (Context context, AttributeSet attrs) {
    super (context, attrs);
}