android content res Resources NotFoundException String resource ID Fatal Exception in Main

Question

I ve been trying to make a simple program that fetches a small random number and displays it to the user in a textview  After finally getting the random number to generate  I think  the program throws a fatal exception whenever I run  No errors in code  but I m a complete newbie and I am starting simple so that I may learn  After hours I ve submitted to asking for help  I m almost certain that my snippet for random numbers is in the wrong area  I just am not sure where to put it  Everywhere I tried throws the same error   This is the  java  package com eai vgp   import java util Random   import android os Bundle  import android app Activity  import android view Menu  import android widget TextView   public class MainActivity extends Activity         Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity main                Override     public boolean onCreateOptionsMenu Menu menu               Inflate the menu  this adds items to the action bar if it is present          getMenuInflater   inflate R menu activity main  menu           return true               Random pp   new Random    int a1   pp nextInt 10    TextView tv    TextView findViewById R id tv     tv setText a1             The XML   lt 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  tools context   MainActivity   gt    lt TextView     android id    id tv      android layout width  wrap content      android layout height  wrap content      android layout centerHorizontal  true      android layout centerVertical  true    gt    lt  RelativeLayout gt    LogCat  03-03 16 34 25 313  I Process 740   Sending signal  PID  740 SIG  9 03-03 16 35 02 212  E Trace 806   error opening trace file  No such file or directory      2  03-03 16 35 02 802  W ResourceType 806   No package identifier when getting value for     resource number 0x00000001 03-03 16 35 02 813  D AndroidRuntime 806   Shutting down VM 03-03 16 35 02 813  W dalvikvm 806   threadid 1  thread exiting with uncaught exception      group 0x40a13300  03-03 16 35 02 833  E AndroidRuntime 806   FATAL EXCEPTION  main 03-03 16 35 02 833  E AndroidRuntime 806   java lang RuntimeException  Unable to start     activity ComponentInfo com eai vgp com eai vgp MainActivity       android content res Resources NotFoundException  String resource ID  0x1 03-03 16 35 02 833  E AndroidRuntime 806    at     android app ActivityThread performLaunchActivity ActivityThread java 2059  03-03 16 35 02 833  E AndroidRuntime 806    at     android app ActivityThread handleLaunchActivity ActivityThread java 2084  03-03 16 35 02 833  E AndroidRuntime 806    at     android app ActivityThread access 600 ActivityThread java 130  03-03 16 35 02 833  E AndroidRuntime 806    at     android app ActivityThread H handleMessage ActivityThread java 1195  03-03 16 35 02 833  E AndroidRuntime 806    at     android os Handler dispatchMessage Handler java 99  03-03 16 35 02 833  E AndroidRuntime 806    at android os Looper loop Looper java 137  03-03 16 35 02 833  E AndroidRuntime 806    at     android app ActivityThread main ActivityThread java 4745  03-03 16 35 02 833  E AndroidRuntime 806    at     java lang reflect Method invokeNative Native Method  03-03 16 35 02 833  E AndroidRuntime 806    at     java lang reflect Method invoke Method java 511  03-03 16 35 02 833  E AndroidRuntime 806    at     com android internal os ZygoteInit MethodAndArgsCaller run ZygoteInit java 786  03-03 16 35 02 833  E AndroidRuntime 806    at     com android internal os ZygoteInit main ZygoteInit java 553  03-03 16 35 02 833  E AndroidRuntime 806    at dalvik system NativeStart main Native     Method  03-03 16 35 02 833  E AndroidRuntime 806   Caused by      android content res Resources NotFoundException  String resource ID  0x1 03-03 16 35 02 833  E AndroidRuntime 806    at     android content res Resources getText Resources java 229  03-03 16 35 02 833  E AndroidRuntime 806    at     android widget TextView setText TextView java 3620  03-03 16 35 02 833  E AndroidRuntime 806    at     com eai vgp MainActivity onCreate MainActivity java 22  03-03 16 35 02 833  E AndroidRuntime 806    at     android app Activity performCreate Activity java 5008  03-03 16 35 02 833  E AndroidRuntime 806    at     android app Instrumentation callActivityOnCreate Instrumentation java 1079  03-03 16 35 02 833  E AndroidRuntime 806        atandroid app ActivityThread performLaunchActivity ActivityThread java 2023  03-03 16 35 02 833  E AndroidRuntime 806        11 more 03-03 16 35 05 113  I Process 806   Sending signal  PID  806 SIG  9

User · Answer

This always can happen in DataBinding  Try to stay away from adding logic in your bindings  including appending an empty string  You can make your own custom adapter  and use it multiple times    BindingAdapter  numericText   fun numericText textView  TextView  value  Number         value  let           textView text   value toString              lt TextView app numericText    list size          gt

User · Answer

You are trying to set int value to TextView so you are getting this issue  To solve this try below one option  option 1   tv setText no        Option2   tv setText String valueOf no

User · Answer

Other possible solution   tv setText Integer toString a1        where a1 - int value

User · Answer

You tried to do a setText a1   a1 is an int value  but setText   requires a string value  For this reason you need use String valueOf a1  to pass the value of a1 as a String and not as an int to a setText    like so   a setText String valueOf a1     that was the exact solution to the problem with my case

User · Answer

tv setText  a1           This will resolve your problem

User · Answer

Move  Random pp   new Random    int a1   pp nextInt 10   TextView tv    TextView findViewById R id tv   tv setText a1     To inside onCreate    and change tv setText a1   to tv setText String valueOf a1        Override protected void onCreate Bundle savedInstanceState      super onCreate savedInstanceState     setContentView R layout activity main      Random pp   new Random      int a1   pp nextInt 10      TextView tv    TextView findViewById R id tv     tv setText String valueOf a1            First issue  findViewById   was called before onCreate    which would throw an NPE   Second issue  Passing an int directly to a TextView calls the overloaded method that looks for a String resource  from R string   Therefore  we want to use String valueOf   to force the String overloaded method

[android] android.content.res.Resources$NotFoundException: String resource ID Fatal Exception in Main

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