android - Enigmatic NullPointerException -

-

i'm getting following null pointer exception. whenever click on button(which i've intent launch) . fc , nullpointer exception. because of use of text file?

logcat

    04-25 20:02:40.762: i/adreno200-eglsub(29671): <configwindowmatch:2081>: format rgba_8888.     04-25 20:02:40.772: d/memalloc(29671): /dev/pmem: mapped buffer base:0x514e1000 size:3649536 offset:3035136 fd:56     04-25 20:02:40.982: d/memalloc(29671): /dev/pmem: mapped buffer base:0x51b08000 size:4325376 offset:3710976 fd:59     04-25 20:02:41.632: i/adreno200-eglsub(29671): <configwindowmatch:2081>: format rgba_8888.     04-25 20:02:41.632: d/memalloc(29671): /dev/pmem: mapped buffer base:0x5212e000 size:4939776 offset:4325376 fd:62     04-25 20:02:41.692: d/memalloc(29671): /dev/pmem: mapped buffer base:0x52615000 size:5554176 offset:4939776 fd:68     04-25 20:02:41.712: d/memalloc(29671): /dev/pmem: unmapping buffer base:0x514e1000 size:3649536 offset:3035136     04-25 20:02:41.712: d/memalloc(29671): /dev/pmem: unmapping buffer base:0x51b08000 size:4325376 offset:3710976     04-25 20:02:42.842: d/memalloc(29671): /dev/pmem: mapped buffer base:0x513e1000 size:4325376 offset:3710976 fd:53     04-25 20:02:42.882: w/dalvikvm(29671): threadid=1: thread exiting uncaught exception (group=0x40dbb9d8)     04-25 20:02:42.902: e/androidruntime(29671): fatal exception: main     04-25 20:02:42.902: e/androidruntime(29671): java.lang.runtimeexception: unable instantiate activity componentinfo{com.dreamgoogle.gihf/com.dreamgoogle.gihf.stories}: java.lang.nullpointerexception     04-25 20:02:42.902: e/androidruntime(29671):    @ android.app.activitythread.performlaunchactivity(activitythread.java:1884)     04-25 20:02:42.902: e/androidruntime(29671):    @ android.app.activitythread.handlelaunchactivity(activitythread.java:1985)     04-25 20:02:42.902: e/androidruntime(29671):    @ android.app.activitythread.access$600(activitythread.java:127)     04-25 20:02:42.902: e/androidruntime(29671):    @ android.app.activitythread$h.handlemessage(activitythread.java:1151)     04-25 20:02:42.902: e/androidruntime(29671):    @ android.os.handler.dispatchmessage(handler.java:99)     04-25 20:02:42.902: e/androidruntime(29671):    @ android.os.looper.loop(looper.java:137)     04-25 20:02:42.902: e/androidruntime(29671):    @ android.app.activitythread.main(activitythread.java:4476)     04-25 20:02:42.902: e/androidruntime(29671):    @ java.lang.reflect.method.invokenative(native method)     04-25 20:02:42.902: e/androidruntime(29671):    @ java.lang.reflect.method.invoke(method.java:511)     04-25 20:02:42.902: e/androidruntime(29671):    @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:816)     04-25 20:02:42.902: e/androidruntime(29671):    @ com.android.internal.os.zygoteinit.main(zygoteinit.java:583)     04-25 20:02:42.902: e/androidruntime(29671):    @ dalvik.system.nativestart.main(native method)     04-25 20:02:42.902: e/androidruntime(29671): caused by: java.lang.nullpointerexception     04-25 20:02:42.902: e/androidruntime(29671):    @ android.app.activity.findviewbyid(activity.java:1965)     04-25 20:02:42.902: e/androidruntime(29671):    @ com.dreamgoogle.gihf.stories.<init>(stories.java:14)     04-25 20:02:42.902: e/androidruntime(29671):    @ java.lang.class.newinstanceimpl(native method)     04-25 20:02:42.902: e/androidruntime(29671):    @ java.lang.class.newinstance(class.java:1319)     04-25 20:02:42.902: e/androidruntime(29671):    @ android.app.instrumentation.newactivity(instrumentation.java:1025)     04-25 20:02:42.902: e/androidruntime(29671):    @ android.app.activitythread.performlaunchactivity(activitythread.java:1875)

xml file

<?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="wrap_content"     android:layout_height="wrap_content" >      <textview         android:id="@+id/jobsdes"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_alignparentleft="true"         android:layout_alignparenttop="true"         android:text="@string/sj1" />  </relativelayout>

java file.

    public class stories extends activity {         textview t1 = (textview) findviewbyid(r.id.jobsdes);          @override         protected void oncreate(bundle savedinstancestate) {             super.oncreate(savedinstancestate);             setcontentview(r.layout.activity_stories);             mypageradapter adapter = new mypageradapter();             viewpager mypager = (viewpager) findviewbyid(r.id.pager1);             mypager.setadapter(adapter);             mypager.setcurrentitem(0);              t1.settext(r.raw.jobs);          }          private class mypageradapter extends pageradapter {             public int getcount() {                 return 4;             }              public object instantiateitem(view collection, int position) {                 layoutinflater inflater = (layoutinflater) collection.getcontext()                         .getsystemservice(context.layout_inflater_service);                 int resid = 0;                 switch (position) {                 case 0:                     resid = r.layout.activity_stories;                     break;                 case 1:                     resid = r.layout.sto2;                     break;                 case 2:                     resid = r.layout.sto3;                     break;                 case 3:                     resid = r.layout.sto4;                     break;                 }                 view view = inflater.inflate(resid, null);                 ((viewpager) collection).addview(view, 0);                 return view;             }              public void destroyitem(view arg0, int arg1, object arg2) {                 ((viewpager) arg0).removeview((view) arg2);             }              public boolean isviewfromobject(view arg0, object arg1) {                 return arg0 == ((view) arg1);             }              public parcelable savestate() {                 return null;             }          }      }

here's pager xml file.

<relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:paddingbottom="@dimen/activity_vertical_margin"     android:paddingleft="@dimen/activity_horizontal_margin"     android:paddingright="@dimen/activity_horizontal_margin"     android:paddingtop="@dimen/activity_vertical_margin"     tools:context=".stories" >      <android.support.v4.view.viewpager         android:id="@+id/pager1"         android:layout_width="match_parent"         android:layout_height="match_parent" />  </relativelayout>

access textview after setcontentview , that'll it.


Popular posts from this blog

How to calculate SNR of signals in MATLAB? -

-
i've encountered simple, yet fundamental problem on calculating snr: there several signals : s1 = original , pure clean signal without noise. n1 = white gaussian noise going added s1. s2 = s1 + n1 (the noisy signal before performing noise-reduction algorithm) s3 = noise-reduced signal (after performing noise reduction algorithm) n2 = s3 - s1 (the amount of noise after performing noise-reduction algorithm) now want compare snr before , after performing noise-reduction algorithm. which signals should consider snr_before!? s1/n1 or s2/n1 ? which signals should consider snr_after!? s3/n1 or s3/n2 ? which commands or functions should use in matlab in order compute snr_before , snr_after? thanks billion putting time on helping me. what know calculating snr before : snrbeforenoise = mean( signal .^ 2 ) / mean( noise .^ 2 ); and snr after : residual_noise = signal - noise_reduced_signal; snr_after = mean( signal .^ 2 ) / mean( residual_noise .^ 2
Read more

c# - Attempting to upload to FTP: System.Net.WebException: System error -

-
i have api takes in xml , uploads files based on information in xml. uploads on schedule (also xml), , have tested surrounding , know works. i getting error 40% of time on first file attempt upload in each time cycle (time cycle = 45 minutes files, 30 minutes others). here code upload: try { loggerftp.log("uploading file: " + filename, false); // create request. ftpwebrequest request = (ftpwebrequest)webrequest.create(appsettingsftp.ftpurl + @"/" + filename); request.method = webrequestmethods.ftp.uploadfile; request.timeout = 6000000; //set 100 minutes //request.timeout = -1; //set infinite // add login credentials. request.credentials = new networkcredential(appsettingsftp.ftplogin, appsettingsftp.ftppassword); // grab file contents. streamreader sourcestream = new streamreader(appsettingsftp.uploadfiledirectory + filename); byte[] filecontents = encoding.utf8.getbytes(sourcestream.readtoend()); sourcest
Read more

ios - UISlider customization: how to properly add shadow to custom knob image -

-
Image
i need place custom knob image shadow uislider. far have image of 38x38, of there region defines shadow of knob. now while using image, when slide knob extreme ends actual knob not able cover end points, hence end points visible under transparent region of knob image this code using customize uislider uiimage *slidebtimg = [uiimage imagenamed:sliderknobimg]; [self.ratingslider setthumbimage:slidebtimg forstate:uicontrolstatenormal]; [self.ratingslider setthumbimage:slidebtimg forstate:uicontrolstatehighlighted]; how can implement custom knob shadow beneath it, covering end points?? look inside uislider.h , there methods let customize slider knob , track needed. (ios 2.0 , above) // lets subclass lay out track , thumb needed - (cgrect)minimumvalueimagerectforbounds:(cgrect)bounds; - (cgrect)maximumvalueimagerectforbounds:(cgrect)bounds; - (cgrect)trackrectforbounds:(cgrect)bounds; - (cgrect)thumbrectforbounds:(cgrect)bounds trackrect:(cgrect)rect value:
Read more