java - How to make a button to generate a random image from Drawable - Android Studio -


i new android studio , question this: have 8 images in drawable called ukchance1 ukchance2 ukchance3 etc. have button , imageview on 1 of layouts. have make when button clicked, random ukchance image shows...

ukchancelayout:

package com.austinthomas.monopolyactioncards.activity; import android.content.res.typedarray; import android.os.bundle; import android.support.annotation.idres; import android.support.v7.app.appcompatactivity; import android.view.view; import android.view.viewgroup; import android.widget.button; import android.widget.imageswitcher; import android.widget.imageview; import android.widget.viewswitcher;  import com.austinthomas.monopolyactioncards.r;  import java.util.arraylist; import java.util.collections; import java.util.random;   public class ukchancelayout extends appcompatactivity {   @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.uk_chance); } }

uk_chance.xml

<?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent">  <textview     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:textappearance="?android:attr/textappearancelarge"     android:text="uk - chance"     android:id="@+id/textview4"     android:layout_alignparenttop="true"     android:layout_alignparentstart="true" />  <button     android:layout_width="300dp"     android:layout_height="100dp"     android:text="click here chance!"     android:id="@+id/uk_chance_button"     android:background = "#f44336"     android:allowundo="false"     android:textcolor="#ffffff"     android:layout_marginbottom="32dp"     android:layout_alignparentbottom="true"     android:layout_centerhorizontal="true" />  <imageview     android:layout_width="250dp"     android:layout_height="143dp"     android:id="@+id/uk_chance_image"     android:layout_margintop="37dp"     android:layout_below="@+id/textview4"     android:layout_centerhorizontal="true" />  </relativelayout>

edit have tried larperdoodles method , says "unfortunately app has stopped"

here logcat:

8-14 19:33:57.277 17380-17380/com.austinthomas.monopolyactioncards  d/androidruntime: shutting down vm 08-14 19:33:57.278 17380-17380/com.austinthomas.monopolyactioncards  e/androidruntime: fatal exception: main  process: com.austinthomas.monopolyactioncards, pid: 17380  java.lang.illegalstateexception: not find method clickhandler(view) in  parent or ancestor context android:onclick attribute defined on view class  android.support.v7.widget.appcompatbutton id 'uk_chance_button'  @

android.support.v7.app.appcompatviewinflater$declaredonclicklistener.resolvemethod(appcompatviewinflater.java:327)

at

android.support.v7.app.appcompatviewinflater$declaredonclicklistener.onclick(appcompatviewinflater.java:284)

at android.view.view.performclick(view.java:5198)  @ android.view.view$performclick.run(view.java:21147)  @ android.os.handler.handlecallback(handler.java:739)  @ android.os.handler.dispatchmessage(handler.java:95)  @ android.os.looper.loop(looper.java:148)  @ android.app.activitythread.main(activitythread.java:5417)  @ java.lang.reflect.method.invoke(native method)  @  com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:726)  @ com.android.internal.os.zygoteinit.main(zygoteinit.java:616) 08-14 19:33:59.376 17380-17380/com.austinthomas.monopolyactioncards i/process:  sending signal. pid: 17380 sig: 9

use method return drawable randomly based on images have.

public class ukchancelayout extends appcompatactivity {      int min =1, max = 8;      @override     protected void oncreate(bundle savedinstancestate) {       super.oncreate(savedinstancestate);       setcontentview(r.layout.uk_chance);       yourbutton.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view v) {              myimage.setimagedrawable(getrandomdrawable(ukchancelayout.this));         }      }   public drawable  getrandomdrawable(context context){       random random = new random();     int = random.nextint(max - min + 1) + min;     drawable drawable = contextcompat.getdrawable(context, defaultresid);;      switch (i) {          case 1:             drawable = contextcompat.getdrawable(context, resid1);             break;         case 2:             drawable = contextcompat.getdrawable(context, resid2);             break;         case 3:             drawable = contextcompat.getdrawable(context, resid3);             break;         case 4:             drawable = contextcompat.getdrawable(context, resid4);             break;         case 5:             drawable = contextcompat.getdrawable(context, resid5);             break;         case 6:             drawable = contextcompat.getdrawable(context, resid6);             break;         case 7:             drawable = contextcompat.getdrawable(context, resid7);             break;         case 8:             drawable = contextcompat.getdrawable(context, resid8);             break;     }      return drawable;     }  }

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