File content as of revision 45:2aa9f933c8d2:

/*
 * Copyright (c) 2017 Baidu, Inc. All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.baidu.duer.dcs.util;

import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.Context;
import android.os.Build;
import android.os.Bundle;
import android.text.TextUtils;

import org.json.JSONArray;
import org.json.JSONObject;

import java.io.Closeable;
import java.io.IOException;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.UUID;

/**
 * 辅助工具类
 * <p>
 * Created by guxiuzhong@baidu.com on 2017/5/17.
 */
public class CommonUtil {
    private static final int JSON_INDENT = 4;

    public static String getCurrentTime() {
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss",
                Locale.CHINESE);
        return format.format(new Date());
    }

    /**
     * 将毫秒格式转化为yyyy-MM-dd HH:mm:ss
     *
     * @param milliSeconds 毫秒
     * @return 格式化后的字符串结果
     */
    public static String formatToDataTime(long milliSeconds) {
        SimpleDateFormat sd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.getDefault());
        return sd.format(milliSeconds);
    }

    /**
     * 将key1=value1&key2=value2格式的query转换成key-value形式的参数串
     *
     * @param query key1=value1&key2=value2格式的query
     * @return key-value形式的bundle
     */
    public static Bundle decodeUrl(String query) {
        Bundle ret = new Bundle();
        if (query != null) {
            String[] pairs = query.split("&");
            for (String pair : pairs) {
                String[] keyAndValues = pair.split("=");
                if (keyAndValues != null && keyAndValues.length == 2) {
                    String key = keyAndValues[0];
                    String value = keyAndValues[1];
                    if (!TextUtils.isEmpty(key) && !TextUtils.isEmpty(value)) {
                        ret.putString(URLDecoder.decode(key), URLDecoder.decode(value));
                    }
                }
            }
        }
        return ret;
    }

    /**
     * 将key-value形式的参数串，转换成key1=value1&key2=value2格式的query
     *
     * @param params key-value参数
     * @return key1=value1&key2=value2格式的query
     */
    public static String encodeUrl(Bundle params) {
        if (params == null || params.isEmpty()) {
            return null;
        }
        boolean first = true;
        StringBuilder sb = new StringBuilder();
        for (String key : params.keySet()) {
            String paramValue = params.getString(key);
            if (paramValue == null) {
                continue;
            }
            if (first) {
                first = false;
            } else {
                sb.append("&");
            }
            sb.append(URLEncoder.encode(key)).append("=").append(URLEncoder.encode(paramValue));
        }
        return sb.toString();
    }

    /**
     * 展示一个通用的弹出框UI
     *
     * @param context 展示弹出框的上下文环境
     * @param title   警告的title信息
     * @param text    警告信息
     */
    public static void showAlert(Context context, String title, String text) {
        AlertDialog alertDialog = new Builder(context).create();
        alertDialog.setTitle(title);
        alertDialog.setMessage(text);
        alertDialog.setCanceledOnTouchOutside(true);
        alertDialog.show();
    }

    private static long lastClickTime;

    /**
     * 是否是双击
     *
     * @return true 是，false 否
     */
    public static boolean isFastDoubleClick() {
        long time = System.currentTimeMillis();
        if (time - lastClickTime < 500) {
            return true;
        }
        lastClickTime = time;
        return false;
    }

    /**
     * json 格式化输出
     *
     * @param json json字符串
     * @return 用四个空格缩进后的json字符串结果
     */
    public static String formatJson(String json) {
        String formatted = "";
        if (json == null || json.length() == 0) {
            return formatted;
        }
        try {
            if (json.startsWith("{")) {
                JSONObject jo = new JSONObject(json);
                formatted = jo.toString(JSON_INDENT);
            } else if (json.startsWith("[")) {
                JSONArray ja = new JSONArray(json);
                formatted = ja.toString(JSON_INDENT);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return formatted;
    }

    /**
     * 关闭流
     *
     * @param closeables closeables
     */
    public static void closeQuietly(Closeable... closeables) {
        for (Closeable c : closeables) {
            try {
                if (c != null) {
                    c.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * Android设备物理唯一标识符
     *
     * @return String 设备唯一标识
     */
    public static String getDeviceUniqueID() {
        String devIDShort = "35" + (Build.BOARD.length() % 10) + (Build.BRAND.length() % 10);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            devIDShort += (Build.SUPPORTED_ABIS[0].length() % 10);
        } else {
            devIDShort += (Build.CPU_ABI.length() % 10);
        }
        devIDShort += (Build.DEVICE.length() % 10) + (Build.MANUFACTURER.length() % 10)
                + (Build.MODEL.length() % 10) + (Build.PRODUCT.length() % 10);
        String serial;
        try {
            serial = Build.class.getField("SERIAL").get(null).toString();
            return new UUID(devIDShort.hashCode(), serial.hashCode()).toString();
        } catch (Exception e) {
            serial = "Dueros000";
        }
        return new UUID(devIDShort.hashCode(), serial.hashCode()).toString();
    }
}