DensityUtil

/**
 *  屏幕的尺寸及不同单位之间的转换
 * Created by travis on 2016/4/18.
 */

public class DensityUtil {

    /**
     * 屏幕的高度（px）
     * @param context
     * @return
     */
    public static final float getHeightInPx(Context context) {
        final float height = context.getResources().getDisplayMetrics().heightPixels;
        return height;
    }

    /**
     * 屏幕的宽度（px）
     * @param context
     * @return
     */
    public static final float getWidthInPx(Context context) {
        final float width = context.getResources().getDisplayMetrics().widthPixels;
        return width;
    }

    /**
     * 屏幕的高度（dp）
     * @param context
     * @return
     */
    public static final int getHeightInDp(Context context) {
        final float height = context.getResources().getDisplayMetrics().heightPixels;
        int heightInDp = px2dip(context, height);
        return heightInDp;
    }

    /**
     * 屏幕的宽度（dp）
     * @param context
     * @return
     */
    public static final int getWidthInDp(Context context) {
        final float height = context.getResources().getDisplayMetrics().heightPixels;
        int widthInDp = px2dip(context, height);
        return widthInDp;
    }

    /**
     * dp to px
     * @param context
     * @param dpValue
     * @return
     */
    public static int dip2px(Context context, float dpValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dpValue * scale + 0.5f);
    }

    /**
     * px to dp
     * @param context
     * @param pxValue
     * @return
     */
    public static int px2dip(Context context, float pxValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (pxValue / scale + 0.5f);
    }

    /**
     * px to sp
     * @param context
     * @param pxValue
     * @return
     */
    public static int px2sp(Context context, float pxValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (pxValue / scale + 0.5f);
    }

    /**
     * sp to px
     * @param context
     * @param spValue
     * @return
     */
    public static int sp2px(Context context, float spValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (spValue * scale + 0.5f);
    }

}