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PONeed help displaying randomly chosen image on activity load and button press
 

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  1. PONeed help displaying randomly chosen image on activity load and button press
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    <p>I'm trying to just make an activity that simply loads a random image when it's loaded. It compiles fine and loads fine. But simply doesn't work. Any ideas what i'm doing wrong? It's making my eyes bleed.</p> <p>------------Here my RandomImage Class --------------------------------------</p> <pre><code>package com.package.name; import java.util.Random; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.widget.ImageView; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View.OnClickListener; public class RandomImage extends Activity implements OnClickListener{ private static final Random rgenerator = new Random(); Integer [] mImageIds = { R.drawable.pictureone, R.drawable.picturetwo, R.drawable.picturethree, }; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.randomimage); Integer q = mImageIds[rgenerator.nextInt(mImageIds.length)]; ImageView iv = (ImageView) findViewById(R.id.imageviewyeah); iv.setTag(q); View nextButton = findViewById(R.id.next_image_button); nextButton.setOnClickListener(this); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.next_image_button: Intent i = new Intent(this, RandomImage.class); startActivity(i); break; } } @Override public boolean onCreateOptionsMenu (Menu menu) { super.onCreateOptionsMenu(menu); MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.menu3, menu); return true; } @Override public boolean onOptionsItemSelected (MenuItem item) { switch (item.getItemId()) { case R.id.menu: startActivity(new Intent(this, Main.class)); return true; } return false; } } </code></pre> <p>------------Here my layout --------------------------------------</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout android:orientation="vertical" xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/widget0" android:background="@drawable/nhiebg" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_gravity="center" &gt; &lt;ImageView android:id="@+id/imageviewyeah" android:tag="q" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center"&gt; &lt;/ImageView&gt; &lt;Button android:id="@+id/next_image_button" android:text="Next Image" android:layout_width="fill_parent" android:layout_height="wrap_content" android:padding="10dip" android:typeface="serif"/&gt; &lt;/LinearLayout&gt; </code></pre> <hr> <p>Thanks you've been a huge help, well i tried what you said. But, it just loads a random image on start, the button just does nothing. I press it then the image that was up goes away and nothing loads in its place. A whole bunch of stuff goes thru logcat, but here's the first two lines </p> <p>07-17 04:15:33.102: WARN/ResourceType(30476): No package identifier when getting value for resource number 0x00000002 07-17 04:15:33.112: WARN/ImageView(30476): Unable to find resource: 2</p> <p>----------------------------WHAT I HAVE NOW----------------------------</p> <pre><code>public class RandomImage extends Activity implements OnClickListener{ private Integer [] mImageIds = { R.drawable.one, R.drawable.two, R.drawable.three, }; private static final Random rgenerator = new Random(); private ImageView iv; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.randomimage); Integer q = mImageIds[rgenerator.nextInt(mImageIds.length)]; iv = (ImageView) findViewById(R.id.imageviewyeah); iv.setImageResource(q); View nextButton = findViewById(R.id.next_image_button); nextButton.setOnClickListener(this); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.next_image_button: iv.setImageResource(rgenerator.nextInt(mImageIds.length)); break; } } </code></pre> <p>I'd also like to point out, i tried removing the lines</p> <pre><code>Integer q = mImageIds[rgenerator.nextInt(mImageIds.length)]; </code></pre> <p>and the line</p> <pre><code>and iv.setImageResource(q); </code></pre> <p>and it still didn't work</p>
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