android - Defining cards as WebViews while still using CardScrollView: Google Glass -


i'm trying develop simple glass example (immersion) each card displays webview in fullscreen (not within cardbuilder.layout.embed_inside).

i'm following answer: google glass immersion custom layout without cardbuilder.layout.embed_inside it's not clear where setup webviews.

my code follows:

public class mainactivity extends activity {     private string cardpageone = "file:///android_asset/one.html";     private string cardpagetwo = "file:///android_asset/two.html";      private cardscrollview mcardscrollview;     private examplecardscrolladapter madapter;     private list<view> mcards;      @override     protected void oncreate(bundle savedinstancestate)     {         super.oncreate(savedinstancestate);          createcards();        // setup webviews          mcardscrollview = new cardscrollview(this);         madapter = new examplecardscrolladapter();         mcardscrollview.setadapter(madapter);         mcardscrollview.activate();         setcontentview(mcardscrollview);     }      private void createcards()      {         mcards = new arraylist<>();          webview myweb = (webview)findviewbyid(r.id.webview);         myweb.getsettings().setjavascriptenabled(false);         myweb.loadurl(filepath);          mcards.add(myweb);          webview myweb2 = (webview)findviewbyid(r.id.webview);         myweb2.getsettings().setjavascriptenabled(false);         myweb2.loadurl(filepathalt);          mcards.add(myweb2);     }      private class examplecardscrolladapter extends cardscrolladapter     {         @override         public int getposition(object item)          {             return mcards.indexof(item);         }          @override         public int getcount()          {             return mcards.size();         }          @override         public object getitem(int position)          {             return mcards.get(position);         }          @override         public int getviewtypecount()         {             // correct? each card have different (web)view             return mcards.size();           }          @override         public int getitemviewtype(int position)         {             // correct?             return position;               }          @override         public view getview(int position, view convertview, viewgroup parent)          {              return mcards.get(position);         }     } }

lastly, webview.xml follows:

<?xml version="1.0" encoding="utf-8"?>  <webview xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/webview" android:layout_width="fill_parent" android:layout_height="fill_parent"></webview>

i'm getting java.lang.nullpointerexception code reaches:

myweb.getsettings().setjavascriptenabled(false);

i believe happens because myweb has not been set content view, i'm using mcardscrollview. if so, , how can setup webviews?

the error in detail is:

07-13 17:24:05.337  18117-18117/? e/androidruntime﹕ fatal exception: main process: com.testwebviewscroller, pid: 18117 java.lang.runtimeexception: unable start activity componentinfo{com.testwebviewscroller/com.testwebviewscroller.mainactivity}: java.lang.nullpointerexception         @ android.app.activitythread.performlaunchactivity(activitythread.java:2224)         @ android.app.activitythread.handlelaunchactivity(activitythread.java:2273)         @ android.app.activitythread.access$800(activitythread.java:138)         @ android.app.activitythread$h.handlemessage(activitythread.java:1236)         @ android.os.handler.dispatchmessage(handler.java:102)         @ android.os.looper.loop(looper.java:149)         @ android.app.activitythread.main(activitythread.java:5045)         @ java.lang.reflect.method.invokenative(native method)         @ java.lang.reflect.method.invoke(method.java:515)         @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:786)         @ com.android.internal.os.zygoteinit.main(zygoteinit.java:602)         @ dalvik.system.nativestart.main(native method)  caused by: java.lang.nullpointerexception         @ com.testwebviewscroller.mainactivity$examplecardscrolladapter.getview(mainactivity.java:101)         @ com.google.android.glass.widget.cardscrollview.loadview(cardscrollview.java:1351)         @ com.google.android.glass.widget.cardscrollview.addchildview(cardscrollview.java:1239)         @ com.google.android.glass.widget.cardscrollview.updateviewsinternal(cardscrollview.java:1131)         @ com.google.android.glass.widget.cardscrollview.updateviews(cardscrollview.java:1193)         @ com.google.android.glass.widget.cardscrollview.activate(cardscrollview.java:1589)         @ com.testwebviewscroller.mainactivity.oncreate(mainactivity.java:40)         @ android.app.activity.performcreate(activity.java:5235)         @ android.app.instrumentation.callactivityoncreate(instrumentation.java:1089)         @ android.app.activitythread.performlaunchactivity(activitythread.java:2188)             at android.app.activitythread.handlelaunchactivity(activitythread.java:2273)             at android.app.activitythread.access$800(activitythread.java:138)             at android.app.activitythread$h.handlemessage(activitythread.java:1236)             at android.os.handler.dispatchmessage(handler.java:102)             at android.os.looper.loop(looper.java:149)             at android.app.activitythread.main(activitythread.java:5045)             at java.lang.reflect.method.invokenative(native method)             at java.lang.reflect.method.invoke(method.java:515)             at com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:786)             at com.android.internal.os.zygoteinit.main(zygoteinit.java:602)             at dalvik.system.nativestart.main(native method)

if want put webview card, why don't inflate own view each item inside of getview() override method? if aren't going use layout provided cards might create new layout , use that. getview() this:

@override public view getview(int position, view convertview, viewgroup parent) {     layoutinflater layoutinflater = (layoutinflater) mcontext.getsystemservice(context.layout_inflater_service);     convertview = layoutinflater.inflate(r.layout.webview, parent, false);      //enter code here handle custom view loading      return convertview; }

Comments

Post a Comment

Popular posts from this blog

javascript - Using jquery append to add option values into a select element not working -

i'm looking dynamically populate select element names of items stored array. for reason it's not working , i'm not sure why. html: <div class="col-md-4 col-md-offset-4"> <select class="select1"> </select> , <select class="select2"> </select> </div> note i'm using bootstrap layout. here's jquery i'm using try , populate ".select1" jquery: select: function() { $.each(state.greens, function(index, value) { $(".select1").append("<option value =' " + index + " '>" + state.greens[index].name + "</option>"); }); } note function 'select' stored within object called 'display'. state.greens name of array i'm trying access. so @ end of html page call display.select(); call function. no error messages showing in console. also, saw question: appending
Read more

Android soft keyboard reverts to default keyboard on orientation change -

i'm building android soft keyboard , can't seem fix bug - have arabic , qwerty keyboard , when rotate device on qwerty keyboard (or arabic shift), it's if program has "restarted" , becomes arabic keyboard without shift. the onsaveinstancestate(bundle savedinstancestate) not work because application not extend activity inputmethodservice . i put following in android manifest android:configchanges="keyboard|keyboardhidden|orientation" android:windowsoftinputmode="stateunchanged|adjustresize"> i tried using @override public void onconfigurationchanged(configuration newconfig) { super.onconfigurationchanged(newconfig); log.i(mydebug, "config changed " + currentkeyboard.equals(qwerty)); } however, currentkeyboard.equals(qwerty)) results false , made sure true before orientation change. any appreciated. i think applications fault. if application restarting on orientation change
Read more

Rendering JButton to get the JCheckBox behavior in a JTable by using images does not update my table -

i rendering jbutton image on simulate jcheckbox behavior. why don't let jtable render jcheckbox? because need bigger checkboxes , there's no way can resize them (as far know). so, have own table cell renderer , editor. both renders jbutton , checkbox images on them. trying change image checked image unchecked image (or vice versa) , update cell value (boolean true or false). however, reason, getcelleditorvalue() not update table. so, release mouse, value goes original one. any appreciated! lot! public class tableexample extends jframe { jscrollpane pane; jpanel panel; jtable table; object[][] data; mytablemodel tm; renderer buttoncolumn; public tableexample(object[][] data) throws ioexception { string[] columns = {"column#1", "column#2", "column#3", "column#4", "column#5", "column#6"}; this.data = data; this.setpreferredsize(new dimension(700, 500));
Read more