android - InflateException when inflating a fragment for a drawer caused by NullPointerException thrown by setContentView() in MainActivity -
since android studio came out decided import project in eclipse. app crashes in api 16 works fine 21. minimum api 14 , maximum 21, can't try running @ in between because don't have device @ level , emulator won't run it. wasn't using gradle on eclipse in android studio.
i'd love helping hand cause it's bit i'm stuck on problem.
you may find code shitty , redundant, i'm sorry in advance please focus on main problem.
and thank you!
stacktrace
28073-28073/sc.erza.prancer e/androidruntime﹕ fatal exception: main java.lang.runtimeexception: unable start activity componentinfo{sc.erza.prancer/sc.erza.prancer.mainactivity}: android.view.inflateexception: binary xml file line #33: error inflating class fragment @ android.app.activitythread.performlaunchactivity(activitythread.java:2085) @ android.app.activitythread.handlelaunchactivity(activitythread.java:2110) @ android.app.activitythread.access$600(activitythread.java:138) @ android.app.activitythread$h.handlemessage(activitythread.java:1205) @ android.os.handler.dispatchmessage(handler.java:99) @ android.os.looper.loop(looper.java:137) @ android.app.activitythread.main(activitythread.java:4940) @ java.lang.reflect.method.invokenative(native method) @ java.lang.reflect.method.invoke(method.java:511) @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:798) @ com.android.internal.os.zygoteinit.main(zygoteinit.java:565) @ dalvik.system.nativestart.main(native method) caused by: android.view.inflateexception: binary xml file line #33: error inflating class fragment @ android.view.layoutinflater.createviewfromtag(layoutinflater.java:704) @ android.view.layoutinflater.rinflate(layoutinflater.java:746) @ android.view.layoutinflater.inflate(layoutinflater.java:489) @ android.view.layoutinflater.inflate(layoutinflater.java:396) @ android.view.layoutinflater.inflate(layoutinflater.java:352) @ com.android.internal.policy.impl.phonewindow.setcontentview(phonewindow.java:425) @ android.app.activity.setcontentview(activity.java:2122) @ sc.erza.prancer.mainactivity.oncreate(mainactivity.java:69) @ android.app.activity.performcreate(activity.java:5275) @ android.app.instrumentation.callactivityoncreate(instrumentation.java:1082) @ android.app.activitythread.performlaunchactivity(activitythread.java:2049) at android.app.activitythread.handlelaunchactivity(activitythread.java:2110) at android.app.activitythread.access$600(activitythread.java:138) at android.app.activitythread$h.handlemessage(activitythread.java:1205) at android.os.handler.dispatchmessage(handler.java:99) at android.os.looper.loop(looper.java:137) at android.app.activitythread.main(activitythread.java:4940) 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:798) at com.android.internal.os.zygoteinit.main(zygoteinit.java:565) at dalvik.system.nativestart.main(native method) caused by: java.lang.nullpointerexception @ sc.erza.prancer.navigationdrawerfragment.oncreateview(navigationdrawerfragment.java:104) @ android.app.fragmentmanagerimpl.movetostate(fragmentmanager.java:807) @ android.app.fragmentmanagerimpl.movetostate(fragmentmanager.java:1013) @ android.app.fragmentmanagerimpl.addfragment(fragmentmanager.java:1112) @ android.app.activity.oncreateview(activity.java:4931) @ android.view.layoutinflater.createviewfromtag(layoutinflater.java:680) 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:425) at android.app.activity.setcontentview(activity.java:2122) at sc.erza.prancer.mainactivity.oncreate(mainactivity.java:69) at android.app.activity.performcreate(activity.java:5275) at android.app.instrumentation.callactivityoncreate(instrumentation.java:1082) at android.app.activitythread.performlaunchactivity(activitythread.java:2049) at android.app.activitythread.handlelaunchactivity(activitythread.java:2110) at android.app.activitythread.access$600(activitythread.java:138) at android.app.activitythread$h.handlemessage(activitythread.java:1205) at android.os.handler.dispatchmessage(handler.java:99) at android.os.looper.loop(looper.java:137) at android.app.activitythread.main(activitythread.java:4940) 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:798) at com.android.internal.os.zygoteinit.main(zygoteinit.java:565) at dalvik.system.nativestart.main(native method) mainactivity.java
i cut part of activity away since wasn't important, contained 3 fragments code never reached.
package sc.erza.prancer; import android.app.actionbar; import android.app.activity; import android.app.fragment; import android.app.fragmentmanager; import android.content.contentvalues; import android.content.intent; import android.database.cursor; import android.database.sqlexception; import android.database.sqlite.sqlitedatabase; import android.database.sqlite.sqliteexception; import android.os.bundle; import android.support.v4.widget.drawerlayout; import android.util.log; import android.view.actionmode; import android.view.layoutinflater; import android.view.menu; import android.view.menuinflater; import android.view.menuitem; import android.view.view; import android.view.viewgroup; import android.widget.abslistview.multichoicemodelistener; import android.widget.adapterview; import android.widget.adapterview.onitemclicklistener; import android.widget.arrayadapter; import android.widget.listadapter; import android.widget.listview; import android.widget.simplecursoradapter; import android.widget.spinner; import android.widget.textview; import android.widget.toast; import com.google.android.gms.common.connectionresult; import com.google.android.gms.common.googleplayservicesutil; import java.util.arraylist; import java.util.list; public class mainactivity extends activity implements navigationdrawerfragment.navigationdrawercallbacks { /** * fragment managing behaviors, interactions , presentation of * navigation drawer. */ private navigationdrawerfragment mnavigationdrawerfragment; /** * used store last screen title. use in * {@link #restoreactionbar()}. */ private charsequence mtitle; private settingsspinnerentrydialog dialogspinnersettings; protected static allfilmsdatabase allfilmsdb; protected static spinnersdatabase spinnersdb; protected static singleshotdatabase singleshotdb; protected static sqlitedatabase allfilmsdbase, spinnersdbase, singleshotdbase; protected static cursor allfilmscursor, singleshotcursor; protected static spinner addfilmcameraspinner, addfilmfilmspinner, addfilmisospinner, addfilmtotaltakesspinner; @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.main_activity); try { allfilmsdb = new allfilmsdatabase(this); } catch (sqlexception allfilmsdatabaseexc) { allfilmsdatabaseexc.printstacktrace(); } try { singleshotdb = new singleshotdatabase(this); } catch (sqlexception singlefilmdatabaseexc) { singlefilmdatabaseexc.printstacktrace(); } try { spinnersdb = new spinnersdatabase(this); } catch (sqlexception spinnerexc) { spinnerexc.printstacktrace(); } mnavigationdrawerfragment = (navigationdrawerfragment) getfragmentmanager().findfragmentbyid(r.id.navigation_drawer); mtitle = getstring(r.string.films_being_used); // set drawer. mnavigationdrawerfragment.setup(r.id.navigation_drawer, (drawerlayout) findviewbyid(r.id.drawer_layout)); } @override protected void onresume() { super.onresume(); final int googleplayserviceavailability = googleplayservicesutil.isgoogleplayservicesavailable(this); switch (googleplayserviceavailability) { case connectionresult.success: log.i("googleplayserviceavailability", "success!"); break; case connectionresult.service_missing: googleplayservicesutil.geterrordialog(googleplayserviceavailability, this, 1).show(); break; case connectionresult.service_version_update_required: googleplayservicesutil.geterrordialog(googleplayserviceavailability, this, 2).show(); break; case connectionresult.service_disabled: googleplayservicesutil.geterrordialog(googleplayserviceavailability, this, 3).show(); } } @override public void onnavigationdraweritemselected(int position) { // update main content replacing fragments fragmentmanager fragmentmanager = getfragmentmanager(); switch(position) { case 0: fragmentmanager.begintransaction().replace(r.id.container, filmsbeingusedfragment.newinstance()).commit(); break; case 1: fragmentmanager.begintransaction().replace(r.id.container, addfilmfragment.newinstance()).commit(); break; case 2: fragmentmanager.begintransaction().replace(r.id.container, usedfilmfragment.newinstance()).commit(); break; } } public void onsectionattached(int number) { switch (number) { case 1: mtitle = getstring(r.string.films_being_used); break; case 2: mtitle = getstring(r.string.add_film); break; case 3: mtitle = getstring(r.string.used_films); break; case 4: mtitle = getstring(r.string.settings); break; } } public void restoreactionbar() { actionbar actionbar = getactionbar(); actionbar.setdisplayshowtitleenabled(true); actionbar.settitle(mtitle); } @override public boolean oncreateoptionsmenu(menu menu) { if (!mnavigationdrawerfragment.isdraweropen()) { // show items in action bar relevant screen // if drawer not showing. otherwise, let drawer // decide show in action bar. getmenuinflater().inflate(r.menu.main_activity, menu); restoreactionbar(); return true; } return super.oncreateoptionsmenu(menu); } @override public boolean onoptionsitemselected(menuitem item) { // handle action bar item clicks here. action bar // automatically handle clicks on home/up button, long // specify parent activity in androidmanifest.xml. int id = item.getitemid(); return id == r.id.action_settings || super.onoptionsitemselected(item); } } navigationdrawerfragment.java
package sc.erza.prancer; import android.app.actionbar; import android.app.activity; import android.app.fragment; import android.content.sharedpreferences; import android.content.res.configuration; import android.os.bundle; import android.preference.preferencemanager; import android.support.v4.view.gravitycompat; import android.support.v4.widget.drawerlayout; import android.support.v7.app.actionbardrawertoggle; import android.view.layoutinflater; import android.view.menu; import android.view.menuinflater; import android.view.menuitem; import android.view.view; import android.view.viewgroup; import android.widget.adapterview; import android.widget.arrayadapter; import android.widget.listview; /** * fragment used managing interactions , presentation of navigation * drawer. see <a href= * "https://developer.android.com/design/patterns/navigation-drawer.html#interaction" * > design guidelines</a> complete explanation of behaviors * implemented here. */ public class navigationdrawerfragment extends fragment { /** * remember position of selected item. */ private static final string state_selected_position = "selected_navigation_drawer_position"; /** * per design guidelines, should show drawer on launch until * user manually expands it. shared preference tracks this. */ private static final string pref_user_learned_drawer = "navigation_drawer_learned"; /** * pointer current callbacks instance (the activity). */ private navigationdrawercallbacks mcallbacks; /** * helper component ties action bar navigation drawer. */ private actionbardrawertoggle mdrawertoggle; private drawerlayout mdrawerlayout; private listview mdrawerlistview; private view mfragmentcontainerview; private int mcurrentselectedposition = 0; private boolean mfromsavedinstancestate; private boolean muserlearneddrawer; public navigationdrawerfragment() { } @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); // read in flag indicating whether or not user has demonstrated // awareness of // drawer. see pref_user_learned_drawer details. sharedpreferences sp = preferencemanager.getdefaultsharedpreferences(getactivity()); muserlearneddrawer = sp.getboolean(pref_user_learned_drawer, false); if (savedinstancestate != null) { mcurrentselectedposition = savedinstancestate .getint(state_selected_position); mfromsavedinstancestate = true; } // select either default item (0) or last selected item. selectitem(mcurrentselectedposition); } @override public void onactivitycreated(bundle savedinstancestate) { super.onactivitycreated(savedinstancestate); // indicate fragment influence set of // actions in action bar. sethasoptionsmenu(true); } @override public view oncreateview(layoutinflater inflater, viewgroup container, bundle savedinstancestate) { mdrawerlistview = (listview) inflater.inflate(r.layout.fragment_navigation_drawer, container, false); mdrawerlistview.setonitemclicklistener(new adapterview.onitemclicklistener() { @override public void onitemclick(adapterview<?> parent, view view, int position, long id) { selectitem(position); } }); mdrawerlistview.setadapter(new arrayadapter<string>(getactionbar().getthemedcontext(), android.r.layout.simple_list_item_activated_1, android.r.id.text1, new string[]{ getstring(r.string.films_being_used), getstring(r.string.add_film), getstring(r.string.used_films), getstring(r.string.settings),})); mdrawerlistview.setitemchecked(mcurrentselectedposition, true); return mdrawerlistview; } public boolean isdraweropen() { return mdrawerlayout != null && mdrawerlayout.isdraweropen(mfragmentcontainerview); } /** * users of fragment must call method set navigation * drawer interactions. * * @param fragmentid * android:id of fragment in activity's layout. * @param drawerlayout * drawerlayout containing fragment's ui. */ public void setup(int fragmentid, drawerlayout drawerlayout) { mfragmentcontainerview = getactivity().findviewbyid(fragmentid); mdrawerlayout = drawerlayout; // set custom shadow overlays main content when drawer // opens mdrawerlayout.setdrawershadow(r.drawable.drawer_shadow, gravitycompat.start); // set drawer's list view items , click listener actionbar actionbar = getactionbar(); actionbar.setdisplayhomeasupenabled(true); actionbar.sethomebuttonenabled(true); // actionbardrawertoggle ties the proper interactions // between navigation drawer , action bar app icon. mdrawertoggle = new actionbardrawertoggle(getactivity(), /* host activity */ mdrawerlayout, /* drawerlayout object */ r.string.navigation_drawer_open, /* * "open drawer" description * accessibility */ r.string.navigation_drawer_close /* * "close drawer" description * accessibility */ ) { @override public void ondrawerclosed(view drawerview) { super.ondrawerclosed(drawerview); if (!isadded()) { return; } getactivity().invalidateoptionsmenu(); // calls // onprepareoptionsmenu() } @override public void ondraweropened(view drawerview) { super.ondraweropened(drawerview); if (!isadded()) { return; } if (!muserlearneddrawer) { // user manually opened drawer; store flag // prevent auto-showing // navigation drawer automatically in future. muserlearneddrawer = true; sharedpreferences sp = preferencemanager.getdefaultsharedpreferences(getactivity()); sp.edit().putboolean(pref_user_learned_drawer, true).apply(); } getactivity().invalidateoptionsmenu(); // calls // onprepareoptionsmenu() } }; // if user hasn't 'learned' drawer, open introduce // them drawer, // per navigation drawer design guidelines. if (!muserlearneddrawer && !mfromsavedinstancestate) { mdrawerlayout.opendrawer(mfragmentcontainerview); } // defer code dependent on restoration of previous instance state. mdrawerlayout.post(new runnable() { @override public void run() { mdrawertoggle.syncstate(); } }); mdrawerlayout.setdrawerlistener(mdrawertoggle); } private void selectitem(int position) { mcurrentselectedposition = position; if (mdrawerlistview != null) { mdrawerlistview.setitemchecked(position, true); } if (mdrawerlayout != null) { mdrawerlayout.closedrawer(mfragmentcontainerview); } if (mcallbacks != null) { mcallbacks.onnavigationdraweritemselected(position); } } @override public void onattach(activity activity) { super.onattach(activity); try { mcallbacks = (navigationdrawercallbacks) activity; } catch (classcastexception e) { throw new classcastexception( "activity must implement navigationdrawercallbacks."); } } @override public void ondetach() { super.ondetach(); mcallbacks = null; } @override public void onsaveinstancestate(bundle outstate) { super.onsaveinstancestate(outstate); outstate.putint(state_selected_position, mcurrentselectedposition); } @override public void onconfigurationchanged(configuration newconfig) { super.onconfigurationchanged(newconfig); // forward new configuration drawer toggle component. mdrawertoggle.onconfigurationchanged(newconfig); } @override public void oncreateoptionsmenu(menu menu, menuinflater inflater) { // if drawer open, show global app actions in action bar. // see // showglobalcontextactionbar, controls top-left area of // action bar. if (mdrawerlayout != null && isdraweropen()) { inflater.inflate(r.menu.global, menu); showglobalcontextactionbar(); } super.oncreateoptionsmenu(menu, inflater); } @override public boolean onoptionsitemselected(menuitem item) { return mdrawertoggle.onoptionsitemselected(item) || super.onoptionsitemselected(item); } /** * per navigation drawer design guidelines, updates action bar * show global app 'context', rather what's in current * screen. */ private void showglobalcontextactionbar() { actionbar actionbar = getactionbar(); actionbar.setdisplayshowtitleenabled(true); actionbar.settitle(""); } private actionbar getactionbar() { return getactivity().getactionbar(); } /** * callbacks interface activities using fragment must * implement. */ public static interface navigationdrawercallbacks { /** * called when item in navigation drawer selected. */ void onnavigationdraweritemselected(int position); } } main_activity.xml
<!-- drawerlayout intended used top-level content view using match_parent both width , height consume full space available. --> <android.support.v4.widget.drawerlayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/drawer_layout" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="sc.erza.prancer.mainactivity" > <!-- main content view, view below consumes entire space available using match_parent in both dimensions. --> <framelayout android:id="@+id/container" android:layout_width="match_parent" android:layout_height="match_parent" > </framelayout> <!-- android:layout_gravity="start" tells drawerlayout treat sliding drawer on left side left-to-right languages , on right side right-to-left languages. if you're not building against api 17 or higher, use android:layout_gravity="left" instead. --> <!-- drawer given fixed width in dp , extends full height of container. --> <fragment android:id="@+id/navigation_drawer" android:name="sc.erza.prancer.navigationdrawerfragment" android:layout_width="@dimen/navigation_drawer_width" android:layout_height="match_parent" android:layout_gravity="start" tools:layout="@layout/fragment_navigation_drawer" /> </android.support.v4.widget.drawerlayout>
getactivity().getapplicationcontext(); instead of getactionbar().getthemedcontext();
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