安卓常用工具類（三）

1包的相關操作

package com.example.coshenwancheng.utils;

import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.net.Uri;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

/**
 * @desc: 包的相關操作
 */

public class PackageUtils {
    /**
     * Check whether a particular package has been granted a particular permission.
     * 檢查包是否授予權限
     *
     * @param context
     * @param permName
     * @param pkgName
     * @return
     */
    public static boolean checkPermission(Context context, String permName, String pkgName) {
        PackageManager pm = context.getPackageManager();
        boolean permission = (PackageManager.PERMISSION_GRANTED == pm.checkPermission(permName, pkgName));
        return permission;
    }

    /**
     * Check whether a particular package has been granted a particular permission.
     * 檢查包是否授予權限
     *
     * @param context
     * @param permName
     * @return
     */
    public static boolean checkPermission(Context context, String permName) {
        int perm = context.checkCallingOrSelfPermission(permName);
        return perm == PackageManager.PERMISSION_GRANTED;
    }

    /**
     * Install package
     * 安裝apk
     *
     * @param context
     * @param filePath
     * @return
     */
    public static boolean install(Context context, String filePath) {
        Intent i = new Intent(Intent.ACTION_VIEW);
        File file = new File(filePath);
        if (file == null || !file.exists() || !file.isFile() || file.length() <= 0) {
            return false;
        }

        i.setDataAndType(Uri.parse("file://" + filePath), "application/vnd.android.package-archive");
        i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(i);
        return true;
    }

    /**
     * Uninstall package
     * 卸載apk
     *
     * @param context
     * @param packageName
     * @return
     */
    public static boolean uninstall(Context context, String packageName) {
        if (packageName == null || packageName.length() == 0) {
            return false;
        }

        Intent i = new Intent(Intent.ACTION_DELETE, Uri.parse(new StringBuilder(32).append("package:")
                .append(packageName).toString()));
        i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(i);
        return true;
    }

    /**
     * Judge whether packageName is a system application
     * 判斷是否是一個系統的應用軟件
     *
     * @param context
     * @return
     */
    public static boolean isSystemApplication(Context context) {
        if (context == null) {
            return false;
        }
        return isSystemApplication(context, context.getPackageName());
    }

    /**
     * Judge whether packageName is a system application
     * 判斷是否是一個系統的應用軟件
     *
     * @param context
     * @param packageName
     * @return
     */
    public static boolean isSystemApplication(Context context, String packageName) {
        if (context == null) {
            return false;
        }
        return isSystemApplication(context.getPackageManager(), packageName);
    }

    /**
     * Judge whether packageName is a system application
     * 判斷是否是一個系統的應用軟件
     *
     * @param packageManager
     * @param packageName
     * @return
     */
    public static boolean isSystemApplication(PackageManager packageManager, String packageName) {
        if (packageManager == null || packageName == null || packageName.length() == 0) {
            return false;
        }
        try {
            ApplicationInfo app = packageManager.getApplicationInfo(packageName, 0);
            return (app != null && (app.flags & ApplicationInfo.FLAG_SYSTEM) > 0);
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
        return false;
    }

    /**
     * Get installed package infos
     * 獲取安裝包信息
     *
     * @param context
     * @return
     */
    public static List<PackageInfo> getInsatalledPackageInfos(Context context) {
        return context.getPackageManager().getInstalledPackages(0);
    }

    /**
     * Judge whether the packageName is installed
     * 判斷是否安裝了軟件
     *
     * @param context
     * @param packageName
     * @return
     */
    public static boolean isInsatalled(Context context, String packageName) {
        if (!StringUtils.isEmpty(packageName)) {
            List<PackageInfo> list = getInsatalledPackageInfos(context);
            if (!CollectionUtils.isEmpty(list)) {
                for (PackageInfo pi : list) {
                    if (packageName.equalsIgnoreCase(pi.packageName)) {
                        return true;
                    }
                }
            }
        }
        return false;
    }

    /**
     * Get all apps
     * 獲取所有的APP
     *
     * @param context
     * @return
     */
    public static List<PackageInfo> getAllApps(Context context) {
        List<PackageInfo> apps = new ArrayList<PackageInfo>();
        PackageManager packageManager = context.getPackageManager();
        List<PackageInfo> packageInfos = packageManager.getInstalledPackages(0);
        for (int i = 0; i < packageInfos.size(); i++) {
            PackageInfo pak = packageInfos.get(i);
            if ((pak.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) <= 0) {
                apps.add(pak);
            }
        }
        return apps;
    }

    /**
     * Start app by packageName
     * 通過包名啓動應用程序
     *
     * @param context
     * @param packageName
     */
    public static void startApp(Context context, String packageName) {
        PackageInfo packageinfo = null;
        try {
            packageinfo = context.getPackageManager().getPackageInfo(packageName, 0);
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
        if (packageinfo == null) {
            return;
        }

        Intent resolveIntent = new Intent(Intent.ACTION_MAIN, null);
        resolveIntent.addCategory(Intent.CATEGORY_LAUNCHER);
        resolveIntent.setPackage(packageinfo.packageName);

        List<ResolveInfo> resolveinfoList = context.getPackageManager()
                .queryIntentActivities(resolveIntent, 0);

        ResolveInfo resolveinfo = resolveinfoList.iterator().next();
        if (resolveinfo != null) {
            String pkgName = resolveinfo.activityInfo.packageName;
            String className = resolveinfo.activityInfo.name;

            Intent intent = new Intent(Intent.ACTION_MAIN);
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            intent.addCategory(Intent.CATEGORY_LAUNCHER);

            ComponentName cn = new ComponentName(pkgName, className);
            intent.setComponent(cn);
            context.startActivity(intent);
        }
    }
}

2獲取隨機數操作類

package com.example.coshenwancheng.utils;

import java.util.Random;

/**
 * @desc: 獲取隨機數操作類
 */

public class RandomUtils {
    /**
     * Returns a pseudo-random uniformly distributed {@code int}.
     * 返回僞隨機均勻分佈
     *
     * @return
     */
    public static int randomInt() {
        Random random = new Random();
        return random.nextInt();
    }

    /**
     * Returns a pseudo-random uniformly distributed {@code int} in the half-open range [0, n).
     *
     * @param n
     * @return
     */
    public static int randomInt(int n) {
        Random random = new Random();
        return random.nextInt(n);
    }

    /**
     * Returns a pseudo-random uniformly distributed {@code int} in the half-open range [min, max].
     *
     * @param min
     * @param max
     * @return
     */
    public static int randomInt(int min, int max) {
        Random random = new Random();
        return random.nextInt(max) % (max - min + 1) + min;
    }

    /**
     * Returns a pseudo-random uniformly distributed {@code int} in the half-open range [0, n).
     *
     * @param n
     * @return
     */
    public static int randomInt2(int n) {
        return (int) (System.currentTimeMillis() % n);
    }

    /**
     * Returns a pseudo-random uniformly distributed {@code int} in the half-open range [0, n).
     *
     * @param n
     * @return
     */
    public static int randomInt3(int n) {
        return (int) (Math.random() * 100);
    }

    /**
     * Returns a pseudo-random uniformly distributed {@code float} in the half-open range [0.0, 1.0).
     *
     * @return
     */
    public static float randomFloat() {
        Random random = new Random();
        return random.nextFloat();
    }

    /**
     * Returns a pseudo-random uniformly distributed {@code double} in the half-open range [0.0, 1.0).
     *
     * @return
     */
    public static double randomDouble() {
        Random random = new Random();
        return random.nextDouble();
    }

    /**
     * Returns a pseudo-random uniformly distributed {@code long}.
     *
     * @return
     */
    public static long randomLong() {
        Random random = new Random();
        return random.nextLong();
    }

    /**
     * Returns a pseudo-random uniformly distributed {@code boolean}.
     *
     * @return
     */
    public static boolean randomBoolean() {
        Random random = new Random();
        return random.nextBoolean();
    }

    /**
     * Returns a pseudo-random (approximately) normally distributed {@code double} with mean 0.0 and standard deviation
     * 1.0. This method uses the <i>polar method</i> of G. E. P. Box, M. E. Muller, and G. Marsaglia, as described by
     * Donald E. Knuth in <i>The Art of Computer Programming, Volume 2: Seminumerical Algorithms</i>, section 3.4.1,
     * subsection C, algorithm P.
     *
     * @return
     */
    public static double randomGaussian() {
        Random random = new Random();
        return random.nextGaussian();
    }

    /**
     * Fills {@code buf} with random bytes.
     *
     * @param buf
     */
    public static void randomBytes(byte[] buf) {
        Random random = new Random();
        random.nextBytes(buf);
    }

    /**
     * Get a random string
     * 得到一個隨機字符串
     *
     * @param source
     * @param length
     * @return
     */
    public static String randomString(String source, int length) {
        return StringUtils.isEmpty(source) ? null : randomString(source.toCharArray(), length);
    }

    /**
     * Get a random string
     * 得到一個隨機字符串
     *
     * @param sourceChar
     * @param length
     * @return
     */
    public static String randomString(char[] sourceChar, int length) {
        if (sourceChar == null || sourceChar.length == 0 || length < 0) {
            return null;
        }
        StringBuilder builder = new StringBuilder(length);
        for (int i = 0; i < length; i++) {
            builder.append(sourceChar[randomInt(sourceChar.length)]);
        }
        return builder.toString();
    }

    /**
     * Shuffling a int array
     * 重新排序數組
     *
     * @param intArray
     * @return
     */
    public static int[] shuffle(int[] intArray) {
        if (intArray == null) {
            return null;
        }
        return shuffle(intArray, intArray.length);
    }

    /**
     * Shuffling a int array
     * 重新排序數組
     *
     * @param intArray
     * @param shuffleCount
     * @return
     */
    public static int[] shuffle(int[] intArray, int shuffleCount) {
        int length;
        if (intArray == null || shuffleCount < 0 || (length = intArray.length) < shuffleCount) {
            return null;
        }

        int[] out = new int[shuffleCount];
        for (int i = 1; i <= shuffleCount; i++) {
            int random = randomInt(length - i);
            out[i - 1] = intArray[random];
            int temp = intArray[length - i];
            intArray[length - i] = intArray[random];
            intArray[random] = temp;
        }
        return out;
    }
}

3SD卡相關的輔助類

package com.example.coshenwancheng.utils;

import java.io.File;

import android.os.Environment;
import android.os.StatFs;

/**
 * SD卡相關的輔助類
 */
public class SDCardUtils
{
    private SDCardUtils()
    {
        /** cannot be instantiated **/
        throw new UnsupportedOperationException("cannot be instantiated");
    }

    /**
     * 判斷SDCard是否可用
     *
     * @return
     */
    public static boolean isSDCardEnable()
    {
        return Environment.getExternalStorageState().equals(
                Environment.MEDIA_MOUNTED);

    }

    /**
     * 獲取SD卡路徑
     *
     * @return
     */
    public static String getSDCardPath()
    {
        return Environment.getExternalStorageDirectory().getAbsolutePath()
                + File.separator;
    }

    /**
     * 獲取SD卡的剩餘容量 單位byte
     *
     * @return
     */
    public static long getSDCardAllSize()
    {
        if (isSDCardEnable())
        {
            StatFs stat = new StatFs(getSDCardPath());
            // 獲取空閒的數據塊的數量
            long availableBlocks = (long) stat.getAvailableBlocks() - 4;
            // 獲取單個數據塊的大小（byte）
            long freeBlocks = stat.getAvailableBlocks();
            return freeBlocks * availableBlocks;
        }
        return 0;
    }

    /**
     * 獲取指定路徑所在空間的剩餘可用容量字節數，單位byte
     *
     * @param filePath
     * @return 容量字節 SDCard可用空間，內部存儲可用空間
     */
    public static long getFreeBytes(String filePath)
    {
        // 如果是sd卡的下的路徑，則獲取sd卡可用容量
        if (filePath.startsWith(getSDCardPath()))
        {
            filePath = getSDCardPath();
        } else
        {// 如果是內部存儲的路徑，則獲取內存存儲的可用容量
            filePath = Environment.getDataDirectory().getAbsolutePath();
        }
        StatFs stat = new StatFs(filePath);
        long availableBlocks = (long) stat.getAvailableBlocks() - 4;
        return stat.getBlockSize() * availableBlocks;
    }

    /**
     * 獲取系統存儲路徑
     *
     * @return
     */
    public static String getRootDirectoryPath()
    {
        return Environment.getRootDirectory().getAbsolutePath();
    }

}

4序列化和反序列化操作類

package com.example.coshenwancheng.utils;

import android.content.Context;

import java.io.Externalizable;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InvalidClassException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

/**
 * @desc: 序列化和反序列化操作類
 */

public class SerializableUtils {
    /**
     * 序列化數據
     *
     * @param context
     * @param fileName
     * @param obj
     * @throws IOException
     */
    public static void serializeData(Context context, String fileName, Object obj) throws IOException {
        if (!(obj instanceof Serializable) && !(obj instanceof Externalizable)) {
            throw new InvalidClassException("Object must be serialized!");
        }
        FileOutputStream fos = context.openFileOutput(fileName, Context.MODE_PRIVATE);
        ObjectOutputStream ostream = new ObjectOutputStream(fos);
        ostream.writeObject(obj);
        ostream.flush();
        ostream.close();
        fos.close();
    }

    /**
     * 反序列化數據
     *
     * @param context
     * @param fileName
     * @return
     * @throws ClassNotFoundException
     * @throws IOException
     */
    public static Object deserializeData(Context context, String fileName) throws ClassNotFoundException, IOException {
        FileInputStream fis = context.openFileInput(fileName);
        ObjectInputStream s = new ObjectInputStream(fis);
        Object obj = s.readObject();
        s.close();
        fis.close();
        return obj;
    }

}

5服務開啓與關閉

package com.example.coshenwancheng.utils;

import android.app.ActivityManager;
import android.content.Context;
import android.content.Intent;

import java.util.List;

/**
 * @desc: 服務開啓與關閉
 */

public class ServiceUtils {
    /**
     * Judge whether a service is running
     *
     * @param context
     * @param className
     * @return
     */
    public static boolean isServiceRunning(Context context, String className) {
        boolean isRunning = false;
        ActivityManager activityManager = (ActivityManager) context
                .getSystemService(Context.ACTIVITY_SERVICE);
        List<ActivityManager.RunningServiceInfo> serviceInfos = activityManager
                .getRunningServices(Integer.MAX_VALUE);
        for (ActivityManager.RunningServiceInfo si : serviceInfos) {
            if (className.equals(si.service.getClassName())) {
                isRunning = true;
            }
        }
        return isRunning;
    }

    /**
     * Stop running service
     *
     * @param context
     * @param className
     * @return
     */
    public static boolean stopRunningService(Context context, String className) {
        Intent intent_service = null;
        boolean ret = false;
        try {
            intent_service = new Intent(context, Class.forName(className));
        } catch (Exception e) {
            e.printStackTrace();
        }
        if (intent_service != null) {
            ret = context.stopService(intent_service);
        }
        return ret;
    }
}

6字符串操作

package com.example.coshenwancheng.utils;

import android.text.TextUtils;

import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.util.Locale;

/**
 * @desc: 字符串操作
 */

public class StringUtils {
    /**
     * Judge whether a string is whitespace, empty ("") or null.
     *
     * @param str
     * @return
     */
    public static boolean isEmpty(String str) {
        int strLen;
        if (str == null || (strLen = str.length()) == 0 || str.equalsIgnoreCase("null")) {
            return true;
        }
        for (int i = 0; i < strLen; i++) {
            if ((Character.isWhitespace(str.charAt(i)) == false)) {
                return false;
            }
        }
        return true;
    }

    /**
     * Returns true if a and b are equal, including if they are both null.
     *
     * @param a
     * @param b
     * @return
     */
    public static boolean equals(CharSequence a, CharSequence b) {
        return TextUtils.equals(a, b);
    }

    /**
     * Judge whether a string is number.
     *
     * @param str
     * @return
     */
    public static boolean isNumeric(String str) {
        for (int i = str.length(); --i >= 0; ) {
            if (!Character.isDigit(str.charAt(i))) {
                return false;
            }
        }
        return true;
    }

    /**
     * Encode a string
     *
     * @param str
     * @return
     */
    public static String encodeString(String str) {
        try {
            return URLEncoder.encode(str, "UTF-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
            return str;
        }
    }

    /**
     * Decode a string
     *
     * @param str
     * @return
     */
    public static String decodeString(String str) {
        try {
            return URLDecoder.decode(str, "UTF-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
            return str;
        }
    }

    /**
     * Converts this string to lower case, using the rules of {@code locale}.
     *
     * @param s
     * @return
     */
    public static String toLowerCase(String s) {
        return s.toLowerCase(Locale.getDefault());
    }

    /**
     * Converts this this string to upper case, using the rules of {@code locale}.
     *
     * @param s
     * @return
     */
    public static String toUpperCase(String s) {
        return s.toUpperCase(Locale.getDefault());
    }
}

7獲取系統信息工具類

package com.example.coshenwancheng.utils;

import android.os.Build;

/**
 * @desc: 獲取系統信息工具類
 */

public class SystemUtils {

    /**
     * ART
     *
     * @return
     */
    public static boolean isART() {
        final String vmVersion = System.getProperty("java.vm.version");
        return vmVersion != null && vmVersion.startsWith("2");
    }

    /**
     * DALVIK
     *
     * @return
     */
    public static boolean isDalvik() {
        final String vmVersion = System.getProperty("java.vm.version");
        return vmVersion != null && vmVersion.startsWith("1");
    }

    /**
     * The brand (e.g., Xiaomi) the software is customized for, if any.
     *
     * @return
     */
    public static String getBrand() {
        return Build.BRAND;
    }

    /**
     * The name of the underlying board, like "MSM8660_SURF".
     *
     * @return
     */
    public static String getBoard() {
        return Build.BOARD;
    }

    /**
     * The end-user-visible name for the end product, like "MI-ONE Plus".
     *
     * @return
     */
    public static String getModel() {
        return Build.MODEL;
    }

    /**
     * Either a changelist number, or a label like "JZO54K".
     *
     * @return
     */
    public static String getID() {
        return Build.ID;
    }

    /**
     * The user-visible version string, like "4.1.2".
     *
     * @return
     */
    public static String getVersionRelease() {
        return Build.VERSION.RELEASE;
    }

    /**
     * The user-visible SDK version of the framework.
     *
     * @return
     */
    public static int getVersionSDK() {
        return Build.VERSION.SDK_INT;
    }

    /**
     * A string that uniquely identifies this build. Do not attempt to parse this value.
     *
     * @return
     */
    public static String getFingerPrint() {
        return Build.FINGERPRINT;
    }

    /**
     * The name of the overall product, like "mione_plus".
     *
     * @return
     */
    public static String getProduct() {
        return Build.PRODUCT;
    }

    /**
     * The manufacturer of the product/hardware, like "Xiaomi".
     *
     * @return
     */
    public static String getManufacturer() {
        return Build.MANUFACTURER;
    }

    /**
     * The name of the industrial design, like "mione_plus".
     *
     * @return
     */
    public static String getDevice() {
        return Build.DEVICE;
    }

    /**
     * The name of the instruction set (CPU type + ABI convention) of native code, like "armeabi-v7a".
     *
     * @return
     */
    public static String getCpuAbi() {
        return Build.CPU_ABI;
    }

    /**
     * The name of the second instruction set (CPU type + ABI convention) of native code, like "armeabi".
     *
     * @return
     */
    public static String getCpuAbi2() {
        return Build.CPU_ABI2;
    }

    /**
     * A build ID string meant for displaying to the user, like "JZO54K".
     *
     * @return
     */
    public static String getDisplay() {
        return Build.DISPLAY;
    }
}

8時間工具類

/*
 * Copyright 2016 北京博瑞彤芸文化傳播股份有限公司
 *
 * 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.example.coshenwancheng.utils;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;

/**
 * @description 時間工具類
 */
public class TimeUtils {

    private TimeUtils() {
        throw new UnsupportedOperationException("u can't fuck me...");
    }

    /**
     * <p>在工具類中經常使用到工具類的格式化描述，這個主要是一個日期的操作類，所以日誌格式主要使用 SimpleDateFormat的定義格式.</p>
     * 格式的意義如下： 日期和時間模式 <br>
     * <p>日期和時間格式由日期和時間模式字符串指定。在日期和時間模式字符串中，未加引號的字母 'A' 到 'Z' 和 'a' 到 'z'
     * 被解釋爲模式字母，用來表示日期或時間字符串元素。文本可以使用單引號 (') 引起來，以免進行解釋。"''"
     * 表示單引號。所有其他字符均不解釋；只是在格式化時將它們簡單複製到輸出字符串，或者在分析時與輸入字符串進行匹配。
     * </p>
     * 定義了以下模式字母（所有其他字符 'A' 到 'Z' 和 'a' 到 'z' 都被保留）： <br>
     * <table border="1" cellspacing="1" cellpadding="1" summary="Chart shows pattern letters, date/time component,
     * presentation, and examples.">
     * <tr>
     * <th align="left">字母</th>
     * <th align="left">日期或時間元素</th>
     * <th align="left">表示</th>
     * <th align="left">示例</th>
     * </tr>
     * <tr>
     * <td><code>G</code></td>
     * <td>Era 標誌符</td>
     * <td>Text</td>
     * <td><code>AD</code></td>
     * </tr>
     * <tr>
     * <td><code>y</code> </td>
     * <td>年 </td>
     * <td>Year </td>
     * <td><code>1996</code>; <code>96</code> </td>
     * </tr>
     * <tr>
     * <td><code>M</code> </td>
     * <td>年中的月份 </td>
     * <td>Month </td>
     * <td><code>July</code>; <code>Jul</code>; <code>07</code> </td>
     * </tr>
     * <tr>
     * <td><code>w</code> </td>
     * <td>年中的週數 </td>
     * <td>Number </td>
     * <td><code>27</code> </td>
     * </tr>
     * <tr>
     * <td><code>W</code> </td>
     * <td>月份中的週數 </td>
     * <td>Number </td>
     * <td><code>2</code> </td>
     * </tr>
     * <tr>
     * <td><code>D</code> </td>
     * <td>年中的天數 </td>
     * <td>Number </td>
     * <td><code>189</code> </td>
     * </tr>
     * <tr>
     * <td><code>d</code> </td>
     * <td>月份中的天數 </td>
     * <td>Number </td>
     * <td><code>10</code> </td>
     * </tr>
     * <tr>
     * <td><code>F</code> </td>
     * <td>月份中的星期 </td>
     * <td>Number </td>
     * <td><code>2</code> </td>
     * </tr>
     * <tr>
     * <td><code>E</code> </td>
     * <td>星期中的天數 </td>
     * <td>Text </td>
     * <td><code>Tuesday</code>; <code>Tue</code> </td>
     * </tr>
     * <tr>
     * <td><code>a</code> </td>
     * <td>Am/pm 標記 </td>
     * <td>Text </td>
     * <td><code>PM</code> </td>
     * </tr>
     * <tr>
     * <td><code>H</code> </td>
     * <td>一天中的小時數（0-23） </td>
     * <td>Number </td>
     * <td><code>0</code> </td>
     * </tr>
     * <tr>
     * <td><code>k</code> </td>
     * <td>一天中的小時數（1-24） </td>
     * <td>Number </td>
     * <td><code>24</code> </td>
     * </tr>
     * <tr>
     * <td><code>K</code> </td>
     * <td>am/pm 中的小時數（0-11） </td>
     * <td>Number </td>
     * <td><code>0</code> </td>
     * </tr>
     * <tr>
     * <td><code>h</code> </td>
     * <td>am/pm 中的小時數（1-12） </td>
     * <td>Number </td>
     * <td><code>12</code> </td>
     * </tr>
     * <tr>
     * <td><code>m</code> </td>
     * <td>小時中的分鐘數 </td>
     * <td>Number </td>
     * <td><code>30</code> </td>
     * </tr>
     * <tr>
     * <td><code>s</code> </td>
     * <td>分鐘中的秒數 </td>
     * <td>Number </td>
     * <td><code>55</code> </td>
     * </tr>
     * <tr>
     * <td><code>S</code> </td>
     * <td>毫秒數 </td>
     * <td>Number </td>
     * <td><code>978</code> </td>
     * </tr>
     * <tr>
     * <td><code>z</code> </td>
     * <td>時區 </td>
     * <td>General time zone </td>
     * <td><code>Pacific Standard Time</code>; <code>PST</code>; <code>GMT-08:00</code> </td>
     * </tr>
     * <tr>
     * <td><code>Z</code> </td>
     * <td>時區 </td>
     * <td>RFC 822 time zone </td>
     * <td><code>-0800</code> </td>
     * </tr>
     * </table>
     * <pre>
     *                          HH:mm    15:44
     *                         h:mm a    3:44 下午
     *                        HH:mm z    15:44 CST
     *                        HH:mm Z    15:44 +0800
     *                     HH:mm zzzz    15:44 中國標準時間
     *                       HH:mm:ss    15:44:40
     *                     yyyy-MM-dd    2016-08-12
     *               yyyy-MM-dd HH:mm    2016-08-12 15:44
     *            yyyy-MM-dd HH:mm:ss    2016-08-12 15:44:40
     *       yyyy-MM-dd HH:mm:ss zzzz    2016-08-12 15:44:40 中國標準時間
     *  EEEE yyyy-MM-dd HH:mm:ss zzzz    星期五 2016-08-12 15:44:40 中國標準時間
     *       yyyy-MM-dd HH:mm:ss.SSSZ    2016-08-12 15:44:40.461+0800
     *     yyyy-MM-dd'T'HH:mm:ss.SSSZ    2016-08-12T15:44:40.461+0800
     *   yyyy.MM.dd G 'at' HH:mm:ss z    2016.08.12 公元 at 15:44:40 CST
     *                         K:mm a    3:44 下午
     *               EEE, MMM d, ''yy    星期五, 八月 12, '16
     *          hh 'o''clock' a, zzzz    03 o'clock 下午, 中國標準時間
     *   yyyyy.MMMMM.dd GGG hh:mm aaa    02016.八月.12 公元 03:44 下午
     *     EEE, d MMM yyyy HH:mm:ss Z    星期五, 12 八月 2016 15:44:40 +0800
     *                  yyMMddHHmmssZ    160812154440+0800
     *     yyyy-MM-dd'T'HH:mm:ss.SSSZ    2016-08-12T15:44:40.461+0800
     * EEEE 'DATE('yyyy-MM-dd')' 'TIME('HH:mm:ss')' zzzz    星期五 DATE(2016-08-12) TIME(15:44:40) 中國標準時間
     * </pre>
     */
    public static final SimpleDateFormat DEFAULT_SDF = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.getDefault());
    public static final SimpleDateFormat CN_MM_DD_SDF = new SimpleDateFormat("MM月dd日", Locale.getDefault());
    public static final SimpleDateFormat CN_M_D_SDF = new SimpleDateFormat("M月d日", Locale.getDefault());
    public static final SimpleDateFormat EN_YYYY_MM_DD_SDF = new SimpleDateFormat("yyyy-MM-dd", Locale.getDefault());
    public static final SimpleDateFormat CN_YYYY_MM_DD_SDF = new SimpleDateFormat("yyyy年MM月dd日", Locale.getDefault());
    public static final SimpleDateFormat CN_YYYY_M_D_SDF = new SimpleDateFormat("yyyy年M月d日", Locale.getDefault());
    public static final SimpleDateFormat EN_M_D_SDF = new SimpleDateFormat("M/d", Locale.getDefault());
    public static final SimpleDateFormat EN_MM_DD_SDF = new SimpleDateFormat("MM-dd", Locale.getDefault());
    public static final SimpleDateFormat EN_HH_mm = new SimpleDateFormat("HH:mm", Locale.getDefault());


    /**
     * 將時間戳轉爲時間字符串
     * <p>格式爲yyyy-MM-dd HH:mm:ss</p>
     *
     * @param milliseconds 毫秒時間戳
     * @return 時間字符串
     */
    public static String milliseconds2String(long milliseconds) {
        return milliseconds2String(milliseconds, DEFAULT_SDF);
    }

    /**
     * 將時間戳轉爲時間字符串
     * <p>格式爲用戶自定義</p>
     *
     * @param milliseconds 毫秒時間戳
     * @param format       時間格式
     * @return 時間字符串
     */
    public static String milliseconds2String(long milliseconds, SimpleDateFormat format) {
        return format.format(new Date(milliseconds));
    }

    /**
     * 將時間字符串轉爲時間戳
     * <p>格式爲yyyy-MM-dd HH:mm:ss</p>
     *
     * @param time 時間字符串
     * @return 毫秒時間戳
     */
    public static long string2Milliseconds(String time) {
        return string2Milliseconds(time, DEFAULT_SDF);
    }

    /**
     * 將時間字符串轉爲時間戳
     * <p>格式爲用戶自定義</p>
     *
     * @param time   時間字符串
     * @param format 時間格式
     * @return 毫秒時間戳
     */
    public static long string2Milliseconds(String time, SimpleDateFormat format) {
        try {
            return format.parse(time).getTime();
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return -1;
    }

    /**
     * 將時間字符串轉爲Date類型
     * <p>格式爲yyyy-MM-dd HH:mm:ss</p>
     *
     * @param time 時間字符串
     * @return Date類型
     */
    public static Date string2Date(String time) {
        return string2Date(time, DEFAULT_SDF);
    }


    /**
     * 將時間字符串轉爲Date類型
     * <p>格式爲用戶自定義</p>
     *
     * @param time   時間字符串
     * @param format 時間格式
     * @return Date類型
     */
    public static Date string2Date(String time, SimpleDateFormat format) {
        return new Date(string2Milliseconds(time, format));
    }

    /**
     * 將Date類型轉爲時間字符串
     * <p>格式爲yyyy-MM-dd HH:mm:ss</p>
     *
     * @param time Date類型時間
     * @return 時間字符串
     */
    public static String date2String(Date time) {
        return date2String(time, DEFAULT_SDF);
    }

    /**
     * 將Date類型轉爲時間字符串
     * <p>格式爲用戶自定義</p>
     *
     * @param time   Date類型時間
     * @param format 時間格式
     * @return 時間字符串
     */
    public static String date2String(Date time, SimpleDateFormat format) {
        return format.format(time);
    }

    /**
     * 將Date類型轉爲時間戳
     *
     * @param time Date類型時間
     * @return 毫秒時間戳
     */
    public static long date2Milliseconds(Date time) {
        return time.getTime();
    }

    /**
     * 將時間戳轉爲Date類型
     *
     * @param milliseconds 毫秒時間戳
     * @return Date類型時間
     */
    public static Date milliseconds2Date(long milliseconds) {
        return new Date(milliseconds);
    }








    /**
     * 獲取兩個毫秒值之間的時間差(天數)
     *
     * @param time1
     * @param time2     一般time2寫較大的值
     * @return
     */
    public static int getIntervalTime(long time1, long time2){
        return (int) ((time2 - time1) / (1000 * 3600 * 24));
    }

    /**
     * 獲取當前時間
     *
     * @return 毫秒時間戳
     */
    public static long getCurTimeMills() {
        return System.currentTimeMillis();
    }

    /**
     * 獲取當前時間
     * <p>格式爲yyyy-MM-dd HH:mm:ss</p>
     *
     * @return 時間字符串
     */
    public static String getCurTimeString() {
        return date2String(new Date());
    }

    /**
     * 獲取當前時間
     * <p>格式爲用戶自定義</p>
     *
     * @param format 時間格式
     * @return 時間字符串
     */
    public static String getCurTimeString(SimpleDateFormat format) {
        return date2String(new Date(), format);
    }

    /**
     * 獲取當前時間
     * <p>Date類型</p>
     *
     * @return Date類型時間
     */
    public static Date getCurTimeDate() {
        return new Date();
    }



    /**
     * 判斷閏年
     *
     * @param year 年份
     * @return {@code true}: 閏年<br>{@code false}: 平年
     */
    public static boolean isLeapYear(int year) {
        return year % 4 == 0 && year % 100 != 0 || year % 400 == 0;
    }

    /**
     * 獲取當前日期是星期幾<br>
     *
     * @return 當前日期是星期幾
     */
    public static String getWeekOfDate() {
        String[] weekDays = {"週日", "週一", "週二", "週三", "週四", "週五", "週六"};
        Calendar cal = Calendar.getInstance();
        cal.setTime(new Date());

        int w = cal.get(Calendar.DAY_OF_WEEK) - 1;
        if (w < 0)
            w = 0;

        return weekDays[w];
    }

    /**
     * 獲取當前日期是星期幾<br>
     *
     * @return 當前日期是星期幾
     */
    public static String getWeek() {
        String[] weekDays = {"星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"};
        Calendar cal = Calendar.getInstance();
        cal.setTime(new Date());

        int w = cal.get(Calendar.DAY_OF_WEEK) - 1;
        if (w < 0)
            w = 0;

        return weekDays[w];
    }

    /**
     * 獲取當前日期的下一天是星期幾<br>
     *
     * @return 當前日期是星期幾
     */
    public static String getWeekOfNextDate() {
        String[] weekDays = {"週日", "週一", "週二", "週三", "週四", "週五", "週六"};
        Calendar cal = Calendar.getInstance();
        cal.setTime(new Date());

        int w = cal.get(Calendar.DAY_OF_WEEK);
        if (w == 0)
            w = 1;
        if (w > 6)
            w = 0;
        return weekDays[w];
    }


    /**
     * 獲取桌面時鐘的時間
     */
    public static String getDeskClockTime() {
        final Calendar c = Calendar.getInstance();
        c.setTimeZone(TimeZone.getTimeZone("GMT+8:00"));
        String mHuor = String.valueOf(c.get(Calendar.HOUR_OF_DAY));
        String imnute = String.valueOf(c.get(Calendar.MINUTE));
        if (imnute.length() < 2) {
            imnute = "0" + imnute;
        }
        if (mHuor.length() < 2) {
            mHuor = "0" + mHuor;
        }
        return mHuor + ":" + imnute;
    }

    /**
     * 獲取當前月份是幾月
     */
    public static String getCurMonth() {

        Calendar c = Calendar.getInstance();

        int year = c.get(Calendar.YEAR);
        int month = c.get(Calendar.MONTH) + 1;
        String monthString = null;

        if (month < 10) {

            monthString = 0 + "" + month;
        } else {

            monthString = "" + month;
        }

        /**
         * 月份從0開始計算
         */
        return year + "-" + monthString;
    }

    /**
     * 獲取兩個月份差值
     *
     * @param month1
     * @param month2
     * @return
     */
    public static int getDistanceOfTwoMonth(String month1, String month2) throws ParseException {

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");
        Calendar bef = Calendar.getInstance();
        Calendar aft = Calendar.getInstance();
        bef.setTime(sdf.parse(month1));
        aft.setTime(sdf.parse(month2));
        int result = aft.get(Calendar.MONTH) - bef.get(Calendar.MONTH);
        int month = (aft.get(Calendar.YEAR) - bef.get(Calendar.YEAR)) * 12;

        return Math.abs(month + result);
    }

    /**
     * 判斷舊日期和新日期【新舊根據獲取先後而定】的先後關係，如果新日期大於舊日期則返回true
     */
    public static boolean compareDates(int oldYear, int oldMonth, int oldDay,
                                       int newYear, int newMonth, int newDay) {
        if (newYear != oldYear)
            return !(newYear < oldYear);

        if (newMonth != oldMonth)
            return !(newMonth < oldMonth);

        if (newDay != oldDay)
            return !(newDay < oldDay);

        return false;
    }

    /**
     * 獲取當前時
     */
    public static int getHour() {
        final Calendar c = Calendar.getInstance();
        c.setTimeZone(TimeZone.getTimeZone("GMT+8:00"));
        return c.get(Calendar.HOUR_OF_DAY);
    }

    /**
     * 獲取指定時間的小時
     */
    public static int getHour(long timeMills) {
        final Calendar c = Calendar.getInstance();
        c.setTimeInMillis(timeMills);
        c.setTimeZone(TimeZone.getTimeZone("GMT+8:00"));
        return c.get(Calendar.HOUR_OF_DAY);
    }



    /**
     * 獲取當前月的天數
     *
     * @return
     */
    public static int getCurMonthLength() {
        Calendar a = Calendar.getInstance();
        a.set(Calendar.DATE, 1);
        a.roll(Calendar.DATE, -1);
        int maxDate = a.get(Calendar.DATE);
        return maxDate;
    }

    /**
     * 獲取當前日期
     *
     * @return
     */
    public static String getCurDayOFMonth() {
        Calendar c = Calendar.getInstance();
        return String.valueOf(c.get(Calendar.DAY_OF_MONTH));
    }

    /**
     * 獲取當前年份
     * @return
     */
    public static String getCurYear() {
        Calendar c = Calendar.getInstance();
        int year = c.get(Calendar.YEAR);
        return year+"";
    }
}

9Toast統一管理類

package com.example.coshenwancheng.utils;

import android.content.Context;
import android.widget.Toast;

/**
 * Toast統一管理類
 *
 */
public class ToastUtil
{

    private ToastUtil()
    {
        /** cannot be instantiated**/
        throw new UnsupportedOperationException("cannot be instantiated");
    }

    public static boolean isShow = true;
    /**
     * 短時間顯示Toast
     *
     * @param context
     * @param message
     */
    public static void showShort(Context context, CharSequence message)
    {
        if (isShow) {
            Toast.makeText(context, message, Toast.LENGTH_SHORT).show();
        }
    }

    /**
     * 短時間顯示Toast
     *
     * @param context
     * @param message
     */
    public static void showShort(Context context, int message)
    {
        if (isShow) {
            Toast.makeText(context, message, Toast.LENGTH_SHORT).show();
        }
    }
    /**
     * 長時間顯示Toast
     *
     * @param context
     * @param message
     */
    public static void showLong(Context context, CharSequence message)
    {
        if (isShow) {
            Toast.makeText(context, message, Toast.LENGTH_LONG).show();
        }
    }

    /**
     * 長時間顯示Toast
     *
     * @param context
     * @param message
     */
    public static void showLong(Context context, int message)
    {
        if (isShow) {
            Toast.makeText(context, message, Toast.LENGTH_LONG).show();
        }
    }
    /**
     * 自定義顯示Toast時間
     *
     * @param context
     * @param message
     * @param duration
     */
    public static void show(Context context, CharSequence message, int duration)
    {
        if (isShow) {
            Toast.makeText(context, message, duration).show();
        }
    }

    /**
     * 自定義顯示Toast時間
     *
     * @param context
     * @param message
     * @param duration
     */
    public static void show(Context context, int message, int duration)
    {
        if (isShow) {
            Toast.makeText(context, message, duration).show();
        }
    }

}

10驗證數據合法性

package com.example.coshenwancheng.utils;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @desc: 驗證數據合法性
 */

public class VerifyUtils {
    /**
     * verify whether email is valid
     *
     * @param email
     * @return
     */
    public static boolean isEmail(String email) {
        Pattern pattern = Pattern
                .compile("^([a-zA-Z0-9_\\-\\.]+)@((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.)|(([a-zA-Z0-9\\-]+\\.)" +
                        "+))([a-zA-Z]{2,4}|[0-9]{1,3})(\\]?)$");
        Matcher matcher = pattern.matcher(email);
        return matcher.matches();
    }

    /**
     * verify whether email is valid
     *
     * @param email
     * @return
     */
    public static boolean isEmail2(String email) {
        String expr = "^([a-z0-9A-Z]+[-|\\.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?\\.)+[a-zA-Z]{2,}$";
        return email.matches(expr);
    }

    /**
     * verify whether mobile number is valid
     *
     * @param number
     * @return
     */
    public static boolean isMobileNumber(String number) {
        String expr = "^((13[0-9])|(15[^4,\\D])|(18[0,5-9]))\\d{8}$";
        return number.matches(expr);
    }

    /**
     * verify whether url is valid
     *
     * @param url
     * @return
     */
    public static boolean isUrl(String url) {
        String regex = "^(https?|ftp|file)://[-a-zA-Z0-9+&@#/%?=~_|!:,.;]*[-a-zA-Z0-9+&@#/%=~_|]";
        Pattern patt = Pattern.compile(regex);
        Matcher matcher = patt.matcher(url);
        return matcher.matches();
    }

    /**
     * verify whether number and letter are only contained
     *
     * @param data
     * @return
     */
    public static boolean isNumberAndLetter(String data) {
        String expr = "^[A-Za-z0-9]+$";
        return data.matches(expr);
    }

    /**
     * verify whether number is only contained
     *
     * @param data
     * @return
     */
    public static boolean isNumber(String data) {
        String expr = "^[0-9]+$";
        return data.matches(expr);
    }

    /**
     * verify whether letter is only contained
     *
     * @param data
     * @return
     */
    public static boolean isLetter(String data) {
        String expr = "^[A-Za-z]+$";
        return data.matches(expr);
    }

    /**
     * verify whether Chinese is only contained
     *
     * @param data
     * @return
     */
    public static boolean isChinese(String data) {
        String expr = "^[\u0391-\uFFE5]+$";
        return data.matches(expr);
    }

    /**
     * verify whether Chinese is contained
     *
     * @param data
     * @return
     */
    public static boolean isContainsChinese(String data) {
        String chinese = "[\u0391-\uFFE5]";
        if (!StringUtils.isEmpty(data)) {
            for (int i = 0; i < data.length(); i++) {
                String temp = data.substring(i, i + 1);
                boolean flag = temp.matches(chinese);
                if (flag) {
                    return true;
                }
            }
        }
        return false;
    }

    /**
     * verify whether chinese identity card is valid
     *
     * @param data
     * @return
     */
    public static boolean isChineseCard(String data) {
        String expr = "^[0-9]{17}[0-9xX]$";
        return data.matches(expr);
    }

    /**
     * verify whether post code is valid
     *
     * @param data
     * @return
     */
    public static boolean isPostCode(String data) {
        String expr = "^[0-9]{6,10}";
        return data.matches(expr);
    }
}