/**
* Copyright (C) 2013-2014 EaseMob Technologies. 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.ccxt.whl.utils;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import org.json.JSONArray;
import org.json.JSONObject;
import android.app.ActivityManager;
import android.app.ActivityManager.RunningTaskInfo;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.util.Log;
public class CommonUtils {
private static MyLogger Log = MyLogger.yLog();
/**
* 检测网络是否可用
*
* @param context
* @return
*/
public static boolean isNetWorkConnected(Context context) {
if (context != null) {
ConnectivityManager mConnectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();
if (mNetworkInfo != null) {
return mNetworkInfo.isAvailable();
}
}
return false;
}
/**
* 检测Sdcard是否存在
*
* @return
*/
public static boolean isExitsSdcard() {
if (android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED))
return true;
else
return false;
}
public static String getTopActivity(Context context) {
ActivityManager manager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningTaskInfo> runningTaskInfos = manager.getRunningTasks(1);
if (runningTaskInfos != null)
return runningTaskInfos.get(0).topActivity.getClassName();
else
return "";
}
/**
* 判断对象或对象数组中每一个对象是否为空: 对象为null，字符序列长度为0，集合类、Map为empty
*
* @param obj
* @return
*/
public static boolean isNullOrEmpty(Object obj) {
Log.d( "obj--->"+obj);
if (obj != null){
Log.d("--->not null");
}else{
return true;
}
if (obj.toString() != null){//判断对象（不知道对不对）
Log.d("--->not null");
}else{
return true;
}
/*if (!isNullOrEmpty(obj.toString())){//判断对象（不知道对不对）0904|好像有错，以后在好好看一下
Log.d("isNullOrEmpty", "=》》》》》》not null");
}else{
return true;
}*/
if (obj instanceof CharSequence){
Log.d("--->CharSequence");
return ((CharSequence) obj).length() == 0;
}
if (obj instanceof Collection){
Log.d("--->Collection");
return ((Collection) obj).isEmpty();
}
if (obj instanceof Map){
Log.d( "--->Map");
return ((Map) obj).isEmpty();
}
if (obj instanceof Object[]) {
Log.d("--->Object[]");
Object[] object = (Object[]) obj;
if (object.length == 0) {
return true;
}
boolean empty = true;
for (int i = 0; i < object.length; i++) {
if (!isNullOrEmpty(object[i])) {
empty = false;
break;
}
}
return empty;
}
if (obj instanceof JSONArray) {
if (((JSONArray)obj).length() == 0) {
return true;
}
}
if (obj instanceof JSONObject) {
if (((JSONObject)obj).length() == 0) {
return true;
}
}
return false;
}
/**
* 计算地球上任意两点(经纬度)距离
*
* @param long1
* 第一点经度
* @param lat1
* 第一点纬度
* @param long2
* 第二点经度
* @param lat2
* 第二点纬度
* @return 返回距离 单位：米
*/
public static double Distance(double long1, double lat1, double long2, double lat2) {
double a, b, R;
R = 6378137; // 地球半径
lat1 = lat1 * Math.PI / 180.0;
lat2 = lat2 * Math.PI / 180.0;
a = lat1 - lat2;
b = (long1 - long2) * Math.PI / 180.0;
double d;
double sa2, sb2;
sa2 = Math.sin(a / 2.0);
sb2 = Math.sin(b / 2.0);
d = 2
* R
* Math.asin(Math.sqrt(sa2 * sa2 + Math.cos(lat1)
* Math.cos(lat2) * sb2 * sb2));
return d;
}
/**
* 过滤emoji 或者 其他非文字类型的字符
* @param source
* @return
*/
public static String filterEmoji(String source) {
if (!containsEmoji(source)) {
return source;//如果不包含，直接返回
}
//到这里铁定包含
StringBuilder buf = null;
int len = source.length();
for (int i = 0; i < len; i++) {
char codePoint = source.charAt(i);
if (!isEmojiCharacter(codePoint)) {
if (buf == null) {
buf = new StringBuilder(source.length());
}
buf.append(codePoint);
} else {
}
}
if (buf == null) {
return "";
} else {
if (buf.length() == len) {//这里的意义在于尽可能少的toString，因为会重新生成字符串
buf = null;
return source;
} else {
return buf.toString();
}
}
}
private static boolean isEmojiCharacter(char codePoint) {
return !((codePoint == 0x0) ||
(codePoint == 0x9) ||
(codePoint == 0xA) ||
(codePoint == 0xD) ||
((codePoint >= 0x20) && (codePoint <= 0xD7FF)) ||
((codePoint >= 0xE000) && (codePoint <= 0xFFFD)) ||
((codePoint >= 0x10000) && (codePoint <= 0x10FFFF)));
}
/**
* 检测是否有emoji字符
* @param source
* @return 一旦含有就抛出
*/
public static boolean containsEmoji(String source) {
// if (StringUtils.isBlank(source)) { //需要引用commons-lang-2.5.jar
// return false;
// }
int len = source.length();
for (int i = 0; i < len; i++) {
char codePoint = source.charAt(i);
if (isEmojiCharacter(codePoint)) {
//do nothing，判断到了这里表明，确认有表情字符
return true;
}
}
return false;
}
}