DensityUtils.java

package com.zhan_dui.utils;

import android.content.Context;
import android.util.DisplayMetrics;
import android.view.Display;
import android.view.WindowManager;

public class DensityUtils {
	public static int dp2px(Context context, int dp) {
		DisplayMetrics displayMetrics = context.getResources()
				.getDisplayMetrics();
		return (int) ((dp * displayMetrics.density) + 0.5);
	}

	public static int px2dp(Context context, int px) {
		DisplayMetrics displayMetrics = context.getResources()
				.getDisplayMetrics();
		return (int) ((px / displayMetrics.density) + 0.5);
	}

	@SuppressWarnings("deprecation")
	public static int getScreenWidth(Context context) {
		WindowManager wm = (WindowManager) context
				.getSystemService(Context.WINDOW_SERVICE);
		Display display = wm.getDefaultDisplay();
		return display.getWidth();
	}

	@SuppressWarnings("deprecation")
	public static int getScreenHeight(Context context) {
		WindowManager wm = (WindowManager) context
				.getSystemService(Context.WINDOW_SERVICE);
		Display display = wm.getDefaultDisplay();
		return display.getHeight();
	}

}