Change background colour of current listview item in adapter getView method

Question

I am building a custom adapter for a listview - I would like this adapter to give the listview alternating background colours.

boolean alternate = false;

@         


        

Answer 1

You can use this code:

 if (position % 2 == 0) {
            holder.image.setBackgroundResource(R.drawable.image1);
        } else {
           holder.image.setBackgroundResource(R.drawable.image2);
        }

Answer 2

These are the following steps to do show. Step1.1) Use two selector for odd and even postion list item

artists_list_backgroundcolor.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
 <item
 android:state_selected="false"
    android:state_pressed="false"
    android:drawable="@color/grey" />
<item android:state_pressed="true"
    android:drawable="@color/itemselected" />
<item android:state_selected="true"
 android:state_pressed="false"
    android:drawable="@color/itemselected" />
</selector>

Step 1.2) artists_list_background_alternate.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
 <item
 android:state_selected="false"
    android:state_pressed="false"
    android:drawable="@color/sign_out_color" />
<item android:state_pressed="true"
    android:drawable="@color/login_hover" />
<item android:state_selected="true"
 android:state_pressed="false"
    android:drawable="@color/login_hover" />
</selector>

Step2) colors.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <color name="survey_toplist_item">#EFEDEC</color>
    <color name="survey_alternate_color">#EBE7E6</color>
    <color name="grey">#ffffff</color>
    <color name="itemselected">#EDEDED</color>
    <color name="login_hover">#E5F5FA</color>
    <color name="sign_out_color">#e84040</color>

</resources>

Step 3) In Arrayadapter:

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View view = convertView;
        if (view == null) {
            view = lInflater.inflate(R.layout.listitem, parent, false);
        }

        if (position % 2 == 0) {
            view.setBackgroundResource(R.drawable.artists_list_backgroundcolor);
        } else {
            view.setBackgroundResource(R.drawable.artists_list_background_alternate);
        }

        ((TextView) view.findViewById(R.id.heading)).setText(data.get(position));

        return view;
    }

For more details go through belog link

http://amitandroid.blogspot.in/2013/03/android-listview-with-alternate-list.html

Answer 3

 private int[] colors = new int[] { 0xffD3D3D3, 0xffA9A9A9 };

    inside getView refer the id
     holder._linear_text_active_release_date = (LinearLayout) convertView.findViewById(R.id.relative_text_active_release_date);

holder._linear_text_active_release_status = (LinearLayout) convertView.findViewById(R.id.linear_text_active_release_status); 
add these lines in the getView to set the colour for layout row

holder._linear_text_active_release_status.setBackgroundColor(Color.LTGRA;
            holder._linear_text_active_release_pass.setBackgroundColor(ContextCompat.getColor(context,R.color.amber));

Answer 4

Please correct me if I am wrong but I do it this way:

@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
        convertView = ((LayoutInflater) this._ctx
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE))
                .inflate(this._resource, parent, false);

    }

   switch(position % 3){
      case 0: convertView.setBackgroun....
          break;
      .... (case 1; case 2;)

   }

return convertView;

}

Answer 5

You're not going in the right direction as if the views are re-used you might get unexpected results in that some recycled views will have a different colors, while others not.

Instead of above, set the background based on position. Something like:

if(position % 2 == 0) {
    // set some color
} else {
    // set the other color
}

Answer 6

You can do in your adapter

   public View getView(int position, View convertView, ViewGroup parent) {

        if (convertView == null) {
            inflater = ((Activity) context).getLayoutInflater();
            convertView = inflater.inflate(resourceId, parent, false);
        }
       Person user = getItem(position);

       if(user.isCharged)
       convertView.setBackgroundColor(Color.BLUE);
    }

that will be applied in all your items