[Anfänger Frage] ListView, jede Zeile andere Farbe

        SimpleAdapter adapter = new SimpleAdapter(
        		this,
        		list,
        		R.layout.main_list_item_layout,
        		new String[] {"subject","grade","teacher"},
        		new int[] {R.id.maintvTxt1,R.id.maintvTxt2, R.id.maintvTxt3}
        		);

    	HashMap<String,String> temp = new HashMap<String,String>();
    	temp.put("subject","Deutsch");
    	temp.put("grade", "3-");
    	temp.put("teacher", "Silver, Grey, Black");
    	list.add(temp);

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
 	android:weightSum="100">
    <LinearLayout
        android:layout_width="fill_parent"
        android:weightSum="100"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >
		<TextView android:id="@+id/maintvTxt1"         
		  	android:textSize="16sp"         
		  	android:textStyle="bold"    
		  	android:layout_width="fill_parent"
		  	android:layout_weight="20"         
		  	android:layout_height="fill_parent"/>
		<TextView android:id="@+id/maintvTxt2"         
		  	android:textSize="20sp"
		  	android:layout_gravity="left"
		  	android:gravity="left"
		  	android:textColor="#B2B2B2"     
		  	android:paddingRight="12dp"
		 	android:layout_weight="80"      
		  	android:layout_width="fill_parent"         
		  	android:layout_height="fill_parent"/>
	</LinearLayout>
	<TextView android:id="@+id/maintvTxt3" 
		android:typeface="sans"
		android:textSize="14sp"
		android:textStyle="italic"
		android:layout_width="wrap_content" 
		android:layout_height="wrap_content"/>
</LinearLayout>

    public View getView(int position, View convertView, ViewGroup parent) {
        TextView view = (TextView)convertView;
        if(null == view) {
            view = new TextView(_context);
        }
        view.setBackgroundColor(position%2==0?Color.RED:Color.BLACK);