title: How to set an ImageView[] array?
body: <p>in order to set ImageView dynamic i take an ImageView[] array. If i try to work on a ImageView from my array the activity crashes. Where is my mistake?</p>
  
  <p>activity_main.xml:</p>
  
  <pre><code>&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;TableRow
      android:id="@+id/tableRow1"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_centerHorizontal="true"
      android:layout_centerVertical="true" &gt;
  
      &lt;ImageView
          android:id="@+id/iv1"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:scaleType="fitStart" /&gt;
  
      &lt;ImageView
          android:id="@+id/iv2"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:scaleType="fitStart" /&gt;
  
      &lt;ImageView
          android:id="@+id/iv3"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:scaleType="fitStart" /&gt;
  &lt;/TableRow&gt;
  
  &lt;/RelativeLayout&gt;
  </code></pre>
  
  <p>MainActivity.java:</p>
  
  <pre><code>    package com.example.test;
  
      import android.app.Activity;
      import android.os.Bundle;
      import android.widget.ImageView;
  
      public class MainActivity extends Activity {
  
      private ImageView iv1, iv2, iv3;
      private ImageView[] IMGS = { iv1, iv3, iv3 };
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
  
      iv1 = (ImageView) findViewById(R.id.iv1);
      iv2 = (ImageView) findViewById(R.id.iv2);
      iv3 = (ImageView) findViewById(R.id.iv3);
  
      setImages();
  }
  
  private void setImages() {
  
      // A) this works
      iv1.setImageResource(R.drawable.ic_launcher);
      iv2.setImageResource(R.drawable.ic_launcher);
      iv3.setImageResource(R.drawable.ic_launcher);
  
      // B) at the beginning i need to set all images in a row
      for (ImageView img : IMGS) {
          img.setImageResource(R.drawable.ic_launcher);
      }
  
      // C) later on i need to set an particular image
      IMGS[1].setImageResource(R.drawable.ic_launcher);
  }
  
      }
  </code></pre>
  
  <p>Look at setImages(). A works, B and C crashes my activity. Where is my mistake?</p>
  
  <p>TIA
  Tobias</p>