ScreenUtil.java

package suda.sudamodweather.util;

import android.content.Context;
import android.util.TypedValue;
import android.view.WindowManager;


public final class ScreenUtil {

    public static int getScreenWidth(Context context) {
        WindowManager wm = (WindowManager) context
                .getSystemService(Context.WINDOW_SERVICE);
        return wm.getDefaultDisplay().getWidth();
    }


    public static int getScreenHeight(Context context) {
        WindowManager wm = (WindowManager) context
                .getSystemService(Context.WINDOW_SERVICE);
        return wm.getDefaultDisplay().getHeight();
    }

    public static int Dp2Px(Context context, float dp) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dp * scale + 0.5f);
    }

    /**
     * 将px值转换为dip或dp值，保证尺寸大小不变
     *
     * @param pxValue
     * @param scale
     *            （DisplayMetrics类中属性density）
     * @return
     */
    public static int px2dip(Context context, float pxValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (pxValue / scale + 0.5f);
    }

    /**
     * 获得状态栏的高度
     *
     * @param context
     * @return
     */
    public static int getStatusBarHeight(Context context) {
        int result = 0;
        int resourceId = context.getResources().getIdentifier("status_bar_height", "dimen", "android");
        if (resourceId > 0) {
            result = context.getResources().getDimensionPixelSize(resourceId);
        }
        return result;
    }

    public static int getSp(Context context, float value) {
        return (int) TypedValue
                .applyDimension(TypedValue.COMPLEX_UNIT_SP, value, context.getResources()
                        .getDisplayMetrics());
    }
}