java - InflateException Binary XML file at line #7: Error inflating class fragment -
i've been doing research of problem no solution has yet work me. i've added empty constructors in fragment classes , tried different imports of fragments, nothing seems work. hope guys can me!
my activity:
package com.example.com.example.android.rssfeed; import android.app.activity; import android.os.bundle; public class rssfeedactivity extends activity implements mylistfragment.onitemselectedlistener { @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_rssfeed); } public void onrssitemselected(string link) { detailfragment fragment = (detailfragment) getfragmentmanager().findfragmentbyid(r.id.detailfragment); if (fragment != null && fragment.isinlayout()) { fragment.settext(link); }//end if }//end method onrssitemselected }//end class my fragment:
package com.example.com.example.android.rssfeed; import android.app.activity; import android.os.bundle; import android.app.fragment; import android.view.layoutinflater; import android.view.view; import android.view.viewgroup; import android.widget.button; public class mylistfragment extends fragment { public mylistfragment() { } private onitemselectedlistener listener; @override public view oncreateview(layoutinflater inflater, viewgroup container, bundle savedinstancestate) { view view = inflater.inflate(r.layout.fragment_rsslist_overview, container, false); button button = (button) view.findviewbyid(r.id.btn1); button.setonclicklistener(new view.onclicklistener() { @override public void onclick(view v) { updatedetail(); }//end onclick }); return view; }//end oncreateview public interface onitemselectedlistener { public void onrssitemselected(string link); }//end onitemselectedlistener @override public void onattach(activity activity) { super.onattach(activity); if (activity instanceof onitemselectedlistener) { listener = (onitemselectedlistener) activity; } else { throw new classcastexception(activity.tostring() + "must implement mylistfragment.onitemselectedlistener"); }//end else }//end onattach //may triggered activity public void updatedetail() { //create fake data string newtime = string.valueof(system.currenttimemillis()); // send data activity listener.onrssitemselected(newtime); }//end method updatedetail }//end class my fragment xml:
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:baselinealigned="false" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="horizontal" > <fragment android:id="@+id/listfragment" android:layout_width="0dp" android:layout_weight="1" android:layout_height="match_parent" class="com.example.android.rssfeed.mylistfragment" android:layout_margintop="?android:attr/actionbarsize"></fragment> <fragment android:id="@+id/detailfragment" android:layout_width="0dp" android:layout_weight="2" android:layout_height="match_parent" class="com.example.android.rssfeed.detailfragment"></fragment> </linearlayout> manifest:
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.com.example.android.rssfeed" android:versioncode="1" android:versionname="1.0" > <uses-sdk android:minsdkversion="12" android:targetsdkversion="19" /> <application android:allowbackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/apptheme" > <activity android:name="com.example.com.example.android.rssfeed.rssfeedactivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.main" /> <category android:name="android.intent.category.launcher" /> </intent-filter> </activity> </application> button xml:
<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <button android:id="@+id/btn1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="press update"> </button> </linearlayout> logcat error:
05-17 10:35:01.864: e/androidruntime(6384): fatal exception: main 05-17 10:35:01.864: e/androidruntime(6384): java.lang.runtimeexception: unable start activity componentinfo{com.example.com.example.android.rssfeed/com.example.com.example.android.rssfeed.rssfeedactivity}: android.view.inflateexception: binary xml file line #7: error inflating class fragment 05-17 10:35:01.864: e/androidruntime(6384): @ android.app.activitythread.performlaunchactivity(activitythread.java:2245) 05-17 10:35:01.864: e/androidruntime(6384): @ android.app.activitythread.handlelaunchactivity(activitythread.java:2295) 05-17 10:35:01.864: e/androidruntime(6384): @ android.app.activitythread.access$700(activitythread.java:150) 05-17 10:35:01.864: e/androidruntime(6384): @ android.app.activitythread$h.handlemessage(activitythread.java:1280) 05-17 10:35:01.864: e/androidruntime(6384): @ android.os.handler.dispatchmessage(handler.java:99) 05-17 10:35:01.864: e/androidruntime(6384): @ android.os.looper.loop(looper.java:137) 05-17 10:35:01.864: e/androidruntime(6384): @ android.app.activitythread.main(activitythread.java:5279) 05-17 10:35:01.864: e/androidruntime(6384): @ java.lang.reflect.method.invokenative(native method) 05-17 10:35:01.864: e/androidruntime(6384): @ java.lang.reflect.method.invoke(method.java:511) 05-17 10:35:01.864: e/androidruntime(6384): @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:1102) 05-17 10:35:01.864: e/androidruntime(6384): @ com.android.internal.os.zygoteinit.main(zygoteinit.java:869) 05-17 10:35:01.864: e/androidruntime(6384): @ dalvik.system.nativestart.main(native method) 05-17 10:35:01.864: e/androidruntime(6384): caused by: android.view.inflateexception: binary xml file line #7: error inflating class fragment 05-17 10:35:01.864: e/androidruntime(6384): @ android.view.layoutinflater.createviewfromtag(layoutinflater.java:710) 05-17 10:35:01.864: e/androidruntime(6384): @ android.view.layoutinflater.rinflate(layoutinflater.java:752) 05-17 10:35:01.864: e/androidruntime(6384): @ android.view.layoutinflater.inflate(layoutinflater.java:495) 05-17 10:35:01.864: e/androidruntime(6384): @ android.view.layoutinflater.inflate(layoutinflater.java:397) 05-17 10:35:01.864: e/androidruntime(6384): @ android.view.layoutinflater.inflate(layoutinflater.java:353) 05-17 10:35:01.864: e/androidruntime(6384): @ com.android.internal.policy.impl.phonewindow.setcontentview(phonewindow.java:342) 05-17 10:35:01.864: e/androidruntime(6384): @ android.app.activity.setcontentview(activity.java:1928) 05-17 10:35:01.864: e/androidruntime(6384): @ com.example.com.example.android.rssfeed.rssfeedactivity.oncreate(rssfeedactivity.java:11) 05-17 10:35:01.864: e/androidruntime(6384): @ android.app.activity.performcreate(activity.java:5267) 05-17 10:35:01.864: e/androidruntime(6384): @ android.app.instrumentation.callactivityoncreate(instrumentation.java:1097) 05-17 10:35:01.864: e/androidruntime(6384): @ android.app.activitythread.performlaunchactivity(activitythread.java:2209) 05-17 10:35:01.864: e/androidruntime(6384): ... 11 more 05-17 10:35:01.864: e/androidruntime(6384): caused by: android.app.fragment$instantiationexception: unable instantiate fragment com.example.android.rssfeed.mylistfragment: make sure class name exists, public, , has empty constructor public 05-17 10:35:01.864: e/androidruntime(6384): @ android.app.fragment.instantiate(fragment.java:592) 05-17 10:35:01.864: e/androidruntime(6384): @ android.app.fragment.instantiate(fragment.java:560) 05-17 10:35:01.864: e/androidruntime(6384): @ android.app.activity.oncreateview(activity.java:4862) 05-17 10:35:01.864: e/androidruntime(6384): @ android.view.layoutinflater.createviewfromtag(layoutinflater.java:686) 05-17 10:35:01.864: e/androidruntime(6384): ... 21 more 05-17 10:35:01.864: e/androidruntime(6384): caused by: java.lang.classnotfoundexception: didn't find class "com.example.android.rssfeed.mylistfragment" on path: /data/app/com.example.com.example.android.rssfeed-1.apk 05-17 10:35:01.864: e/androidruntime(6384): @ dalvik.system.basedexclassloader.findclass(basedexclassloader.java:65) 05-17 10:35:01.864: e/androidruntime(6384): @ java.lang.classloader.loadclass(classloader.java:501) 05-17 10:35:01.864: e/androidruntime(6384): @ java.lang.classloader.loadclass(classloader.java:461) 05-17 10:35:01.864: e/androidruntime(6384): @ android.app.fragment.instantiate(fragment.java:582) 05-17 10:35:01.864: e/androidruntime(6384): ... 24 more
caused by: java.lang.classnotfoundexception: didn't find class "com.example.android.rssfeed.mylistfragment" on path: /data/app/com.example.com.example.android.rssfeed-1.apk
change this
class="com.example.android.rssfeed.mylistfragment" to
class="com.example.com.example.android.rssfeed.mylistfragment" cause packagename package com.example.com.example.android.rssfeed.
similarly
class="com.example.com.example.android.rssfeed.detailfragment" if package name same
change this
<button android:id="@+id/btn1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="press update"> to
<button android:id="@+id/btn1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="press update" />
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