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I am trying to inflate a layout containing a Fragment using the backwards compatibility package. I took the jar file and placed it in the libs folder of my project. I extended Fragment and then tried to inflate it by setting the contentView of the Activity to
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<fragment
class="com.test.fragments.AdFragment"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/></LinearLayout>
But when I set the content view it fails with a ClassNotFoundException for the fragment tag.
Here is the logcat output.
java.lang.RuntimeException: Unable to start activity ComponentInfo{}: \
android.view.InflateException: Binary XML file line #51: \
Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1777)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1793)
at android.app.ActivityThread.access$1500(ActivityThread.java:123)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:939)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:3848)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.view.InflateException: Binary XML file line #51: \
Error inflating class fragment
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:581)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:211)
at android.app.Activity.setContentView(Activity.java:1657)
at com.test.base.activities.TabbedStoreActivity.onCreate(TabbedStoreActivity.java:46)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1731)
... 11 more
Caused by: java.lang.ClassNotFoundException: android.view.fragment in loader \
dalvik.system.PathClassLoader[/system/framework/com.google.android.maps.jar: \
/data/app/com.test.test.apk]
at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at android.view.LayoutInflater.createView(LayoutInflater.java:471)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:549)
at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
... 20 more
909
Add a fragment to an activity You can add your fragment to the activity's view hierarchy either by defining the fragment in your activity's layout file or by defining a fragment container in your activity's layout file and then programmatically adding the fragment from within your activity.
We can use Android Studio support in the Design view for the MainActivity layout file to select a fragment from inside the Custom choices. Open the activity_main layout file in design view and, inside the Palete, click Fragment under the “Custom” section. You will be prompted to select a fragment.
"Inflating" a view means taking the layout XML and parsing it to create the view and viewgroup objects from the elements and their attributes specified within, and then adding the hierarchy of those views and viewgroups to the parent ViewGroup.
Make sure your activity is inheriting from FragmentActivity, otherwise <fragment> does not work. Here is a sample project demonstrating this.
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