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POListview error: "Your content must have a ListView whose id attribute is 'android.R.id.list'"
 

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  1. POListview error: "Your content must have a ListView whose id attribute is 'android.R.id.list'"
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    <p>I am getting an error in my logcat saying "Your content must have a ListView whose id attribute is 'android.R.id.list'". My code compiles and runs but force closes when I start my listview activity. I've checked on many similar questions, it seems to be a common problem but I am still unable to fix my code.</p> <p>The Declaration:</p> <pre><code> private ListView lv; Context mContext; List mList; String[] testcontacts; MessageView aa = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.firstlist); testcontacts = getResources() .getStringArray(R.array.testcontacts_array); aa = new MessageView(); lv = getListView();/*(ListView) lv.findViewById(R.id.list); Had to comment out, it cannot find list*/ lv.setAdapter(aa); lv.setTextFilterEnabled(true); lv.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView&lt;?&gt; parent, View view, int position, long id) { // When clicked, show a toast with the TextView text Toast.makeText(getApplicationContext(), ((TextView) view).getText(), Toast.LENGTH_SHORT).show(); } }); } class MessageView extends ArrayAdapter&lt;String&gt; { MessageView() { super(FirstLoginActivity.this, android.R.layout.activity_list_item, testcontacts); // TODO Auto-generated constructor stub } public View getView(int position, View convertview, ViewGroup parent) { Log.d("Ebz", "inside getView method"); ViewHolder holder; View v = convertview; if (v == null) { Log.d("Ebz", "if v == null"); LayoutInflater inflater = getLayoutInflater(); v = inflater.inflate(R.layout.list_items, null); holder = new ViewHolder(); holder.firstLine = (TextView) v.findViewById(R.id.firstLine); holder.secondLine = (TextView) v.findViewById(R.id.secondLine); holder.icon1 = (ImageView) v.findViewById(R.id.icon1); holder.icon2 = (ImageView) v.findViewById(R.id.icon2); v.setTag(holder); } else { holder = (ViewHolder) v.getTag(); } holder.firstLine.setText(testcontacts[position]); holder.secondLine.setText(testcontacts[position]); holder.icon1.setImageBitmap(null); holder.icon2.setImageBitmap(null); // call the images directly? return v; } class ViewHolder { TextView firstLine; TextView secondLine; ImageView icon1; ImageView icon2; } } } </code></pre> <p>My XML</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" &gt; &lt;RelativeLayout android:id="@+id/top_control_bar" android:layout_width="fill_parent" android:layout_height="wrap_content" &gt; &lt;TextView android:id="@+id/textView1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginBottom="10dp" android:layout_weight="1" android:background="#cc252a" android:paddingBottom="10dp" android:paddingLeft="10dp" android:paddingTop="10dp" android:text="This will be Changed" android:textAppearance="?android:attr/textAppearanceLarge" /&gt; &lt;/RelativeLayout&gt; &lt;LinearLayout android:id="@+id/bottom_control_bar" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" &gt; &lt;/LinearLayout&gt; &lt;ListView android:id="@+id/list" android:layout_width="fill_parent" android:layout_height="0dip" android:layout_above="@id/bottom_control_bar" android:layout_below="@id/top_control_bar" android:choiceMode="multipleChoice" /&gt; &lt;/RelativeLayout&gt; </code></pre> <p>My ListItems:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" &gt; &lt;RelativeLayout android:id="@+id/top_control_bar" android:layout_width="fill_parent" android:layout_height="wrap_content" &gt; &lt;TextView android:id="@+id/textView1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginBottom="10dp" android:layout_weight="1" android:background="#cc252a" android:paddingBottom="10dp" android:paddingLeft="10dp" android:paddingTop="10dp" android:text="This will be Changed" android:textAppearance="?android:attr/textAppearanceLarge" /&gt; &lt;/RelativeLayout&gt; &lt;LinearLayout android:id="@+id/bottom_control_bar" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" &gt; &lt;/LinearLayout&gt; &lt;ListView android:id="@+id/list" android:layout_width="fill_parent" android:layout_height="0dip" android:layout_above="@id/bottom_control_bar" android:layout_below="@id/top_control_bar" android:choiceMode="multipleChoice" android:divider="#cc252a" android:dividerHeight="14.5dp" /&gt; &lt;/RelativeLayout&gt; </code></pre>
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