AppUtil.java

package com.wuxiaolong.wochat.util;

import android.app.Activity;
import android.app.ProgressDialog;

import org.ocpsoft.prettytime.PrettyTime;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * Created by WuXiaolong on 2015/12/15.
 */
public class AppUtil {
    public static String millisecsToDateString(long timestamp) {
        long gap = System.currentTimeMillis() - timestamp;
        if (gap < 1000 * 60 * 60 * 24) {
            String s = (new PrettyTime()).format(new Date(timestamp));
            return s;
        } else {
            SimpleDateFormat format = new SimpleDateFormat("MM-dd HH:mm");
            return format.format(new Date(timestamp));
        }
    }

    public static ProgressDialog showProgressDialog(Activity activity) {
        //activity = modifyDialogContext(activity);
        ProgressDialog dialog = new ProgressDialog(activity);
        dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
        dialog.setCancelable(true);
        dialog.setMessage("加载中");
        if (!activity.isFinishing()) {
            dialog.show();
        }
        return dialog;
    }

    public static boolean isMobileNO(String mobiles) {
        Pattern p = Pattern.compile("^((13[0-9])|(15[^4,\\D])|(18[0,5-9]))\\d{8}$");
        Matcher m = p.matcher(mobiles);
        return m.matches();

    }
}