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android – Error inflating class fragment

Posted by: admin March 10, 2020 Leave a comment


I get the Error

Unable to start activity ComponentInfo{de.androidbuch.activiti/de.androidbuch.activiti.task.Activity}: android.view.InflateException: Binary XML file line #11: Error inflating class fragment

when I switch via the portrait and the landscape mode. I’m using fragments. My xml is:

 <LinearLayout android:id="@+id/mainLayout"
               android:layout_height="wrap_content" >

    <ListView android:id="@+id/android:list"

    <fragment android:id="@+id/fragmentDetails"

If I switch via landscape and portrait mode everything works fine. But when I click on my fragment (and I can see my fragment) and then switch to the other mode I get the error. Any idea how I can solve it? Found some answers here but none of these helped me out…

06-21 14:55:05.600: ERROR/AndroidRuntime(7636): FATAL EXCEPTION: main
06-21 14:55:05.600: ERROR/AndroidRuntime(7636): java.lang.RuntimeException: Unable to start activity         
ComponentInfo{de.androidbuch.activiti/de.androidbuch.activiti.task.Activity}:   android.view.InflateException: Binary XML file line #11: Error inflating class fragment
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1736)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1752)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3097)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at android.app.ActivityThread.access$1600(ActivityThread.java:123)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:997)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at android.os.Handler.dispatchMessage(Handler.java:99)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at android.os.Looper.loop(Looper.java:126)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at android.app.ActivityThread.main(ActivityThread.java:3998)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at java.lang.reflect.Method.invokeNative(Native Method)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at java.lang.reflect.Method.invoke(Method.java:491)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at dalvik.system.NativeStart.main(Native Method)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636): Caused by: android.view.InflateException: Binary XML file line #11: Error inflating class fragment
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:688)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:724)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:727)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at android.view.LayoutInflater.inflate(LayoutInflater.java:479)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at android.view.LayoutInflater.inflate(LayoutInflater.java:391)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at android.view.LayoutInflater.inflate(LayoutInflater.java:347)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:227)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at android.app.Activity.setContentView(Activity.java:1771)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at de.androidbuch.activiti.task.TaskActivity.onCreate(TaskActivity.java:83)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1700)
06-21 14:55:05.600: ERROR/AndroidRuntime(7636):     ... 12 more
How to&Answers:

As hdemirchian said, make sure to use:

import android.support.v4.app.Fragment;

And also make sure that the Activity that is using the fragment(s) extends FragmentActivity instead of the regular Activity,

import android.support.v4.app.FragmentActivity;

to get the FragmentActivity class.


The exception android.view.InflateException: Binary XML file line: #... Error inflating class fragment might happen if you manipulate with getActivity() inside your fragment before onActivityCreated() get called. In such case you receive a wrong activity reference and can’t rely on that.

For instance the next pattern is wrong:

public View onCreateView(LayoutInflater inflater, ViewGroup container, 
        Bundle savedInstanceState) 
    final View view = inflater.inflate(R.layout..., container, false);

    Button button = getActivity().findViewById(R.id...);
    button.setOnClickListener(...); - another problem: button is null

    return view;

Correct pattern #1

public View onCreateView(LayoutInflater inflater, ViewGroup container, 
        Bundle savedInstanceState) 
    final View view = inflater.inflate(R.layout..., container, false);

    Button button = view.findViewById(R.id...);

    return view;

Correct pattern #2

public void onActivityCreated(Bundle savedInstanceState) {

    Button button = getActivity().findViewById(R.id...);


Make sure your Activity extends FragmentActivity.


I had the same error. I was digging all day long, dunno but i think i tried ~25 solutions on this problem. None worked until at 2AM i found out that i was missing this line at apps manifest xml:

<meta-data android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />

That line was inside <application> tag. I realy hope this helps for someone.


I had the same problem. The solution for me was the order of super.onCreate and setContentView within the FragmentActivity

Following order works fine:



Fragments cannot be nested in XML

Learnt this the hard way – if you nest an XML layout based <fragment> tag inside a (potentially) dynamically loaded fragment from FragmentManager, then you start to get weird errors, trying to inflate your fragment xml.

Turns out, that this is not supported – it will work fine if you do this through purely the FragmentManager approach.

I was getting this problem because I was trying load a fragment inside a <DrawerLayout> from xml, and this was causing a crash in the onCreateView() method when I popped the back stack.


I was having the same problem as you are facing.
None of the tips on top helped me.
Later, I found that all I had to do is fix my imports from:

import android.app.Fragment;


import android.support.v4.app.Fragment;


Make sure there is no exception raised in the onCreateView method of the fragment. If any exception is raised in this method, logcat won’t show exact details of the exception, instead it always shows the message:

Caused by: java.lang.ClassNotFoundException: Didn't find class "android.view.fragment" 
on path: DexPathList[[zip file "/data/app/com.package/base.apk"],
nativeLibraryDirectories=[/data/app/com.package/lib/arm64, /vendor/lib64, /system/lib64]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)


Have you tried:

            android:layout_height="fill_parent" />


If your TaskDetailsFragment extending android.app.Fragment, do change in onCreateView().

Return your view which you want to show in the Fragment or convert your Layout to view by using LayoutInflater and return it.

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View mainview = inflater.inflate(R.layout.main, null);
    return mainview;

Hope this works. 🙂


Check you class path, this could be the view inflator could not find your class definition as defined in your xml
the above path could be wrong.


I was receiving this error for different reasons.

Steps to reproduce:

~> My issue was that I created a brand new blank application.

~> I then generated a custom fragment from the File ~> New File Menu.

~> Proceeded to customize the fragment by adding layouts and buttons etc.

~> Referenced the new custom fragment in the auto generated activity_my.xml that was generated for me when creating the application. Doing this allowed the XML to generate the objects for me.

Heres is the catch when generating the custom fragment via File ~> New File Menu it auto generates an interface function stub and places it at the bottom of the fragment class file.

This means that your MyActivity class must implement this interface. If it does not then the the above error occurs only when referencing the fragment from xml. By removing the reference for the Fragment in the XML completely, and creating the fragment through code in the MyActivity.java class file Logcat generates a more concise error explaining the issue in detail and complaining about the interface. This is demonstrated in the Project Template Activity+Fragment. Although, <~that Project Template does not generate the interface stub.


For me it was after scrolling in the stack trace i found im missing the permission for android.permission.ACCESS_NETWORK_STATE

after adding this permission it was fixed


If you have separate layout files for portrait and landscape modes and are getting an inflation error whenever you change orientation after clicking an item, there is most likely a discrepancy between your layout files.

When you get the error, is it only when you click the item in landscape mode or only in portrait mode or both? Does your TaskDetailsFragment activity use a layout file that could have discrepancies between landscape and portrait modes?


My problem in this case was a simple instance of having a dumb null pointer exception in one of my methods that was being invoked later in the lifecycle. This was causing the “Error inflating class fragment” exception for me. In short, please remember to check the further down the exception stack trace for a possible cause.

Once I resolved the null pointer exception, my fragment loaded fine.


If you are adding Fragment statically that is, in xml, then you might have missed to implement OnFragmentInteractionListener in your Activity class. Then the interface implementation would solve the problem. If you are adding Fragment dynamically, that is, in java class then this is not the solution. Because IDE itself will not allow you to proceed without implementing required interfaces.


None of the solutions mentioned above helped me. In the log I could find the detail of the exception as mentioned below:

06-19 16:20:37.885: E/AndroidRuntime(23973): Caused by: java.lang.RuntimeException: API key not found.  Check that /meta-data/ android:name="com.google.android.maps.v2.API_KEY" android:value="your API key"/ is in the application element of AndroidManifest.xml.

I did this and my code was working!

<meta-data  android:name="com.google.android.maps.v2.API_KEY" android:value="AIzaSyCl1yGPZ3mpxxxxxxxAz2R-t7zcWVzrHUL9k"/>


If you don’t want to change anything and go with “fragment” tag

do this,

 android:visibility="gone" (Visibility will not work, just helps in removing frag from xml viewer)(If you want the visibility to be gone make it in your fragment root element visibility=gone)
 android:name="com.example.YOUR_FRAGMENT" (This is important)


Had the same error type, where exactly the same error message in logcat was displayed. I needed to make changes in the Java Build Path located under Project->Properties. I had included Google Maps related libraries like android-support-v4.jar and google-play-services.jar; however I was missing including these on the 'Build class path' in the 'Order and Export' option menu. Maybe the error lies here.

Try including libraries to the build class path.

The order of which the classes are built might also trigger the error, so my advice is also to try to rearrange the order of the building path. The error disappeared when I used the following order: 'my_project_name/src'->'my_project_name/gen'->'Android Private Libraries'. The last unit contains the jar files mentioned earlier.


In your xml file just use a instead of the tag.
The inflater tries to create an android.app.Fragment from which will fail on API < 10.
So you need to create a view group of a different type.


I got this error when using a ListFragment but the list view id was listView1 instead of list.

‘Your content must have a ListView whose id attribute is ‘android.R.id.list”



make sure that u have used this one

            android:value="AIzaSyBEwmfL0GaZmdVqdTxxxxxxxx-rVgvY" />

not this..

          android:value="AIzaSyBEwmfL0GaZmdVqdTCvxxxxxxx-rVgvY" /> 


Just had this same error. The reason for mine was the visibility of my fragment class. It was set to default, should be public.


Could you post the fragment’s onCreate and onCreateView methods? I had exactly same exception which was caused by an exception in the fragment onCreate method, when I fixed that problem it fixed the Error inflating class fragment.


I was receiving this error in android studio the problem was that my fragment had a relative layout while the code on the OnCreateView function was

mDrawerListView = (ListView) inflater.inflate(
                R.layout.fragment_navigation_drawer, container, false);

is your code doing the same thing?


If you want to inherit the AppCompatActivity, then you can do something like this-
In the activity xml, use a FrameLayout like this-


and in the activity onCreate

final FragmentManager supportFragmentManager = getSupportFragmentManager();
    FragmentTransaction ft = supportFragmentManager.beginTransaction();
    ft.replace(R.id.result_fragment, fphResultActivityFragment, "result fragment");


I got the same error, but my issue was that my fragment did not have an id in the xml layout of the parent activity.


After one day struggle i found some scenario check may be you are facing same,

If everything is woking same as google code then please check manifest file in my case i added geo key and map key that’s why exception occurs,

Note – do not add two keys in manifest file remove map key


above code and add this code.




I had a similar problem; after running the AdMob example, I tried to insert Ads in my app, causing this error:

01-02 16:48:51.269    8199-8199/it.dndc.BreathPlot E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.IllegalStateException: Could not execute method of the activity
 Caused by: android.view.InflateException: Binary XML file line #57: Error inflating class fragment

The solution is: you cannot insert the fragment for an Ad into a ListActivity.
Instead, I could add it to a FragmentActivity and to an ActionBarActivity without any problem.

My suggestion is: start from the AdMob example and add into it your existing app: I would have saved a lot of time !!!


Make sure your Activity extends FragmentActivity or AppCompatActivity