calculate GridView Item Width - Android User Interface

Android examples for User Interface:GridView

  1. HOME
  2. Android
  3. User Interface
  4. GridView

Description

calculate GridView Item Width

Demo Code


import android.app.Activity;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.util.TypedValue;

public class Main{
    private static int PORTRAIT_GRIDVIEW_COLUMN_NUMBER = 2;
    private static int LANDSCAPE_GRIDVIEW_COLUMN_NUMBER = 4;
    public static int calcItemWidth(Activity activity) {
        int colNum = getColumnNumber(activity);
        return calcItemWidth(activity, colNum);
    }//w  w w  .  j  a va 2s  .  c o m
    public static int calcItemWidth(Activity activity, int colNum) {
        Resources r = activity.getResources();
        float padding = TypedValue.applyDimension(
                TypedValue.COMPLEX_UNIT_DIP, 8 * 2 + (colNum - 1) * 8,
                r.getDisplayMetrics());

        final int screenWidth = SystemMetadata.getScreenWidth(activity);
        return (int) ((screenWidth - padding) / colNum);
    }
    public static int getColumnNumber(Activity activity) {
        int colNum = PORTRAIT_GRIDVIEW_COLUMN_NUMBER;
        boolean isLand = isScreenOrientationLandscape(activity);
        if (isLand)
            colNum = LANDSCAPE_GRIDVIEW_COLUMN_NUMBER;

        return colNum;
    }
    private static boolean isScreenOrientationLandscape(Activity activity) {
        Configuration conf = activity.getResources().getConfiguration();
        if (conf.orientation == Configuration.ORIENTATION_LANDSCAPE)
            return true;

        return false;
    }
}

Related Tutorials