Android之工具类封装

ResourceUtils

Android Resource工具类，可用于从android资源目录的raw和assets目录读取内容，如：
geFileFromAssets(Context context, String fileName) 得到assets目录下某个文件内容
geFileFromRaw(Context context, int resId) 得到raw目录下某个文件内容

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

import android.content.Context;

/**
 * ResourceUtils
 */
public class ResourceUtils {

    private ResourceUtils() {
        throw new AssertionError();
    }

    /**
     * get an asset using ACCESS_STREAMING mode. This provides access to files that have been bundled with an
     * application as assets -- that is, files placed in to the "assets" directory.
     * 
     * @param context
     * @param fileName The name of the asset to open. This name can be hierarchical.
     * @return
     */
    public static String geFileFromAssets(Context context, String fileName) {
        if (context == null || StringUtils.isEmpty(fileName)) {
            return null;
        }

        StringBuilder s = new StringBuilder("");
        try {
            InputStreamReader in = new InputStreamReader(context.getResources().getAssets().open(fileName));
            BufferedReader br = new BufferedReader(in);
            String line;
            while ((line = br.readLine()) != null) {
                s.append(line);
            }
            return s.toString();
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }

    /**
     * get content from a raw resource. This can only be used with resources whose value is the name of an asset files
     * -- that is, it can be used to open drawable, sound, and raw resources; it will fail on string and color
     * resources.
     * 
     * @param context
     * @param resId The resource identifier to open, as generated by the appt tool.
     * @return
     */
    public static String geFileFromRaw(Context context, int resId) {
        if (context == null) {
            return null;
        }

        StringBuilder s = new StringBuilder();
        try {
            InputStreamReader in = new InputStreamReader(context.getResources().openRawResource(resId));
            BufferedReader br = new BufferedReader(in);
            String line;
            while ((line = br.readLine()) != null) {
                s.append(line);
            }
            return s.toString();
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }

    /**
     * same to {@link ResourceUtils#geFileFromAssets(Context, String)}, but return type is List
     * 
     * @param context
     * @param fileName
     * @return
     */
    public static List geFileToListFromAssets(Context context, String fileName) {
        if (context == null || StringUtils.isEmpty(fileName)) {
            return null;
        }

        List fileContent = new ArrayList();
        try {
            InputStreamReader in = new InputStreamReader(context.getResources().getAssets().open(fileName));
            BufferedReader br = new BufferedReader(in);
            String line;
            while ((line = br.readLine()) != null) {
                fileContent.add(line);
            }
            br.close();
            return fileContent;
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }

    /**
     * same to {@link ResourceUtils#geFileFromRaw(Context, int)}, but return type is List
     * 
     * @param context
     * @param resId
     * @return
     */
    public static List geFileToListFromRaw(Context context, int resId) {
        if (context == null) {
            return null;
        }

        List fileContent = new ArrayList();
        BufferedReader reader = null;
        try {
            InputStreamReader in = new InputStreamReader(context.getResources().openRawResource(resId));
            reader = new BufferedReader(in);
            String line = null;
            while ((line = reader.readLine()) != null) {
                fileContent.add(line);
            }
            reader.close();
            return fileContent;
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }
}   

---

ParcelUtils

Android Parcel工具类，可用于从parcel读取或写入特殊类型数据，如：

    readBoolean(Parcel in) 从pacel中读取boolean类型数据

    readHashMap(Parcel in, ClassLoader loader) 从pacel中读取map类型数据
    writeBoolean(boolean b, Parcel out) 向parcel中写入boolean类型数据        
    writeHashMap(Map map, Parcel out, int flags) 向parcel中写入map类型数据

import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

import android.os.Parcel;
import android.os.Parcelable;

/**
 * ParcelUtils
 */
public class ParcelUtils {

    private ParcelUtils() {
        throw new AssertionError();
    }

    /**
     * read boolean
     * 
     * @param in
     * @return
     */
    public static boolean readBoolean(Parcel in) {
        return in.readInt() == 1;
    }

    /**
     * write boolean
     * 
     * @param b
     * @param out
     */
    public static void writeBoolean(boolean b, Parcel out) {
        out.writeInt(b ? 1 : 0);
    }

    /**
     * Read a HashMap from a Parcel, class of key and value are both String
     * 
     * @param in
     * @return
     */
    public static Map readHashMapStringAndString(Parcel in) {
        if (in == null) {
            return null;
        }

        int size = in.readInt();
        if (size == -1) {
            return null;
        }

        Map map = new HashMap();
        for (int i = 0; i < size; i++) {
            String key = in.readString();
            map.put(key, in.readString());
        }
        return map;
    }

    /**
     * Write a HashMap to a Parcel, class of key and value are both String
     * 
     * @param map
     * @param out
     * @param flags
     */
    public static void writeHashMapStringAndString(Map map, Parcel out, int flags) {
        if (map != null) {
            out.writeInt(map.size());
            for (Entry entry : map.entrySet()) {
                out.writeString(entry.getKey());
                out.writeString(entry.getValue());
            }
        } else {
            out.writeInt(-1);
        }
    }

    /**
     * Read a HashMap from a Parcel, class of key is String, class of Value can parcelable
     * 
     * @param 
     * @param in
     * @param loader
     * @return
     */
    @SuppressWarnings("unchecked")
    public static  Map readHashMapStringKey(Parcel in, ClassLoader loader) {
        if (in == null) {
            return null;
        }

        int size = in.readInt();
        if (size == -1) {
            return null;
        }

        Map map = new HashMap();
        for (int i = 0; i < size; i++) {
            String key = in.readString();
            map.put(key, (V)in.readParcelable(loader));
        }
        return map;
    }

    /**
     * Write a HashMap to a Parcel, class of key is String, class of Value can parcelable
     * 
     * @param map
     * @param out
     * @param flags
     */
    public static  void writeHashMapStringKey(Map map, Parcel out, int flags) {
        if (map != null) {
            out.writeInt(map.size());

            for (Entry entry : map.entrySet()) {
                out.writeString(entry.getKey());
                out.writeParcelable(entry.getValue(), flags);
            }
        } else {
            out.writeInt(-1);
        }
    }

    /**
     * Read a HashMap from a Parcel, class of key and value can parcelable both
     * 
     * @param 
     * @param in
     * @param loader
     * @return
     */
    @SuppressWarnings("unchecked")
    public static  Map readHashMap(Parcel in, ClassLoader loader) {
        if (in == null) {
            return null;
        }

        int size = in.readInt();
        if (size == -1) {
            return null;
        }

        Map map = new HashMap();
        for (int i = 0; i < size; i++) {
            map.put((K)in.readParcelable(loader), (V)in.readParcelable(loader));
        }
        return map;
    }

    /**
     * Write a HashMap to a Parcel, class of key and value can parcelable both
     * 
     * @param map
     * @param out
     * @param flags
     */
    public static  void writeHashMap(Map map, Parcel out, int flags) {
        if (map != null) {
            out.writeInt(map.size());

            for (Entry entry : map.entrySet()) {
                out.writeParcelable(entry.getKey(), flags);
                out.writeParcelable(entry.getValue(), flags);
            }
        } else {
            out.writeInt(-1);
        }
    }
}    

---

TimeUtils

时间工具类，可用于时间相关操作，如：

    getCurrentTimeInLong() 得到当前时间
    getTime(long timeInMillis, SimpleDateFormat dateFormat) 将long转换为固定格式时间字符串

import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * TimeUtils
 */
public class TimeUtils {

    public static final SimpleDateFormat DEFAULT_DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    public static final SimpleDateFormat DATE_FORMAT_DATE    = new SimpleDateFormat("yyyy-MM-dd");

    private TimeUtils() {
        throw new AssertionError();
    }

    /**
     * long time to string
     * 
     * @param timeInMillis
     * @param dateFormat
     * @return
     */
    public static String getTime(long timeInMillis, SimpleDateFormat dateFormat) {
        return dateFormat.format(new Date(timeInMillis));
    }

    /**
     * long time to string, format is {@link #DEFAULT_DATE_FORMAT}
     * 
     * @param timeInMillis
     * @return
     */
    public static String getTime(long timeInMillis) {
        return getTime(timeInMillis, DEFAULT_DATE_FORMAT);
    }

    /**
     * get current time in milliseconds
     * 
     * @return
     */
    public static long getCurrentTimeInLong() {
        return System.currentTimeMillis();
    }

    /**
     * get current time in milliseconds, format is {@link #DEFAULT_DATE_FORMAT}
     * 
     * @return
     */
    public static String getCurrentTimeInString() {
        return getTime(getCurrentTimeInLong());
    }

    /**
     * get current time in milliseconds
     * 
     * @return
     */
    public static String getCurrentTimeInString(SimpleDateFormat dateFormat) {
        return getTime(getCurrentTimeInLong(), dateFormat);
    }
}    

---

**日志工具类L.java**


import android.util.Log;  

/** 
 * Log统一管理类 
 *  
 *  
 *  
 */  
public class L  
{  

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

    public static boolean isDebug = true;// 是否需要打印bug，可以在application的onCreate函数里面初始化  
    private static final String TAG = "way";  

    // 下面四个是默认tag的函数  
    public static void i(String msg)  
    {  
        if (isDebug)  
            Log.i(TAG, msg);  
    }  

    public static void d(String msg)  
    {  
        if (isDebug)  
            Log.d(TAG, msg);  
    }  

    public static void e(String msg)  
    {  
        if (isDebug)  
            Log.e(TAG, msg);  
    }  

    public static void v(String msg)  
    {  
        if (isDebug)  
            Log.v(TAG, msg);  
    }  

    // 下面是传入自定义tag的函数  
    public static void i(String tag, String msg)  
    {  
        if (isDebug)  
            Log.i(tag, msg);  
    }  

    public static void d(String tag, String msg)  
    {  
        if (isDebug)  
            Log.i(tag, msg);  
    }  

    public static void e(String tag, String msg)  
    {  
        if (isDebug)  
            Log.i(tag, msg);  
    }  

    public static void v(String tag, String msg)  
    {  
        if (isDebug)  
            Log.i(tag, msg);  
    }  
}  





**Toast统一管理类** 

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

/** 
 * Toast统一管理类 
 *  
 */  
public class T  
{  

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

    public static boolean isShow = true;  

    /** 
     * 短时间显示Toast 
     *  
     * @param context 
     * @param message 
     */  
    public static void showShort(Context context, CharSequence message)  
    {  
        if (isShow)  
            Toast.makeText(context, message, Toast.LENGTH_SHORT).show();  
    }  

    /** 
     * 短时间显示Toast 
     *  
     * @param context 
     * @param message 
     */  
    public static void showShort(Context context, int message)  
    {  
        if (isShow)  
            Toast.makeText(context, message, Toast.LENGTH_SHORT).show();  
    }  

    /** 
     * 长时间显示Toast 
     *  
     * @param context 
     * @param message 
     */  
    public static void showLong(Context context, CharSequence message)  
    {  
        if (isShow)  
            Toast.makeText(context, message, Toast.LENGTH_LONG).show();  
    }  

    /** 
     * 长时间显示Toast 
     *  
     * @param context 
     * @param message 
     */  
    public static void showLong(Context context, int message)  
    {  
        if (isShow)  
            Toast.makeText(context, message, Toast.LENGTH_LONG).show();  
    }  

    /** 
     * 自定义显示Toast时间 
     *  
     * @param context 
     * @param message 
     * @param duration 
     */  
    public static void show(Context context, CharSequence message, int duration)  
    {  
        if (isShow)  
            Toast.makeText(context, message, duration).show();  
    }  

    /** 
     * 自定义显示Toast时间 
     *  
     * @param context 
     * @param message 
     * @param duration 
     */  
    public static void show(Context context, int message, int duration)  
    {  
        if (isShow)  
            Toast.makeText(context, message, duration).show();  
    }  

}  






**SharedPreferences封装类SPUtils**


import java.lang.reflect.InvocationTargetException;  
import java.lang.reflect.Method;  
import java.util.Map;  

import android.content.Context;  
import android.content.SharedPreferences;  

public class SPUtils  
{  
    /** 
     * 保存在手机里面的文件名 
     */  
    public static final String FILE_NAME = "share_data";  

    /** 
     * 保存数据的方法，我们需要拿到保存数据的具体类型，然后根据类型调用不同的保存方法 
     *  
     * @param context 
     * @param key 
     * @param object 
     */  
    public static void put(Context context, String key, Object object)  
    {  

        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,  
                Context.MODE_PRIVATE);  
        SharedPreferences.Editor editor = sp.edit();  

        if (object instanceof String)  
        {  
            editor.putString(key, (String) object);  
        } else if (object instanceof Integer)  
        {  
            editor.putInt(key, (Integer) object);  
        } else if (object instanceof Boolean)  
        {  
            editor.putBoolean(key, (Boolean) object);  
        } else if (object instanceof Float)  
        {  
            editor.putFloat(key, (Float) object);  
        } else if (object instanceof Long)  
        {  
            editor.putLong(key, (Long) object);  
        } else  
        {  
            editor.putString(key, object.toString());  
        }  

        SharedPreferencesCompat.apply(editor);  
    }  

    /** 
     * 得到保存数据的方法，我们根据默认值得到保存的数据的具体类型，然后调用相对于的方法获取值 
     *  
     * @param context 
     * @param key 
     * @param defaultObject 
     * @return 
     */  
    public static Object get(Context context, String key, Object defaultObject)  
    {  
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,  
                Context.MODE_PRIVATE);  

        if (defaultObject instanceof String)  
        {  
            return sp.getString(key, (String) defaultObject);  
        } else if (defaultObject instanceof Integer)  
        {  
            return sp.getInt(key, (Integer) defaultObject);  
        } else if (defaultObject instanceof Boolean)  
        {  
            return sp.getBoolean(key, (Boolean) defaultObject);  
        } else if (defaultObject instanceof Float)  
        {  
            return sp.getFloat(key, (Float) defaultObject);  
        } else if (defaultObject instanceof Long)  
        {  
            return sp.getLong(key, (Long) defaultObject);  
        }  

        return null;  
    }  

    /** 
     * 移除某个key值已经对应的值 
     * @param context 
     * @param key 
     */  
    public static void remove(Context context, String key)  
    {  
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,  
                Context.MODE_PRIVATE);  
        SharedPreferences.Editor editor = sp.edit();  
        editor.remove(key);  
        SharedPreferencesCompat.apply(editor);  
    }  

    /** 
     * 清除所有数据 
     * @param context 
     */  
    public static void clear(Context context)  
    {  
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,  
                Context.MODE_PRIVATE);  
        SharedPreferences.Editor editor = sp.edit();  
        editor.clear();  
        SharedPreferencesCompat.apply(editor);  
    }  

    /** 
     * 查询某个key是否已经存在 
     * @param context 
     * @param key 
     * @return 
     */  
    public static boolean contains(Context context, String key)  
    {  
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,  
                Context.MODE_PRIVATE);  
        return sp.contains(key);  
    }  

    /** 
     * 返回所有的键值对 
     *  
     * @param context 
     * @return 
     */  
    public static Map getAll(Context context)  
    {  
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME,  
                Context.MODE_PRIVATE);  
        return sp.getAll();  
    }  

    /** 
     * 创建一个解决SharedPreferencesCompat.apply方法的一个兼容类 
     *  
     * @author zhy 
     *  
     */  
    private static class SharedPreferencesCompat  
    {  
        private static final Method sApplyMethod = findApplyMethod();  

        /** 
         * 反射查找apply的方法 
         *  
         * @return 
         */  
        @SuppressWarnings({ "unchecked", "rawtypes" })  
        private static Method findApplyMethod()  
        {  
            try  
            {  
                Class clz = SharedPreferences.Editor.class;  
                return clz.getMethod("apply");  
            } catch (NoSuchMethodException e)  
            {  
            }  

            return null;  
        }  

        /** 
         * 如果找到则使用apply执行，否则使用commit 
         *  
         * @param editor 
         */  
        public static void apply(SharedPreferences.Editor editor)  
        {  
            try  
            {  
                if (sApplyMethod != null)  
                {  
                    sApplyMethod.invoke(editor);  
                    return;  
                }  
            } catch (IllegalArgumentException e)  
            {  
            } catch (IllegalAccessException e)  
            {  
            } catch (InvocationTargetException e)  
            {  
            }  
            editor.commit();  
        }  
    }  

}  

对SharedPreference的使用做了建议的封装，对外公布出put，get，remove，clear等等方法；
注意一点，里面所有的commit操作使用了SharedPreferencesCompat.apply进行了替代，目的是尽可能的使用apply代替commit
首先说下为什么，因为commit方法是同步的，并且我们很多时候的commit操作都是UI线程中，毕竟是IO操作，尽可能异步；
所以我们使用apply进行替代，apply异步的进行写入；
但是apply相当于commit来说是new API呢，为了更好的兼容，我们做了适配；
SharedPreferencesCompat也可以给大家创建兼容类提供了一定的参考~~




**单位转换类 DensityUtils**


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

/** 
 * 常用单位转换的辅助类 
 *  
 *  
 *  
 */  
public class DensityUtils  
{  
    private DensityUtils()  
    {  
        /* cannot be instantiated */  
        throw new UnsupportedOperationException("cannot be instantiated");  
    }  

    /** 
     * dp转px 
     *  
     * @param context 
     * @param val 
     * @return 
     */  
    public static int dp2px(Context context, float dpVal)  
    {  
        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,  
                dpVal, context.getResources().getDisplayMetrics());  
    }  

    /** 
     * sp转px 
     *  
     * @param context 
     * @param val 
     * @return 
     */  
    public static int sp2px(Context context, float spVal)  
    {  
        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP,  
                spVal, context.getResources().getDisplayMetrics());  
    }  

    /** 
     * px转dp 
     *  
     * @param context 
     * @param pxVal 
     * @return 
     */  
    public static float px2dp(Context context, float pxVal)  
    {  
        final float scale = context.getResources().getDisplayMetrics().density;  
        return (pxVal / scale);  
    }  

    /** 
     * px转sp 
     *  
     * @param fontScale 
     * @param pxVal 
     * @return 
     */  
    public static float px2sp(Context context, float pxVal)  
    {  
        return (pxVal / context.getResources().getDisplayMetrics().scaledDensity);  
    }  

}  




**SD卡相关辅助类 SDCardUtils**


import java.io.File;  

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

/** 
 * SD卡相关的辅助类 
 *  
 *  
 *  
 */  
public class SDCardUtils  
{  
    private SDCardUtils()  
    {  
        /* cannot be instantiated */  
        throw new UnsupportedOperationException("cannot be instantiated");  
    }  

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

    }  

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

    /** 
     * 获取SD卡的剩余容量 单位byte 
     *  
     * @return 
     */  
    public static long getSDCardAllSize()  
    {  
        if (isSDCardEnable())  
        {  
            StatFs stat = new StatFs(getSDCardPath());  
            // 获取空闲的数据块的数量  
            long availableBlocks = (long) stat.getAvailableBlocks() - 4;  
            // 获取单个数据块的大小（byte）  
            long freeBlocks = stat.getAvailableBlocks();  
            return freeBlocks * availableBlocks;  
        }  
        return 0;  
    }  

    /** 
     * 获取指定路径所在空间的剩余可用容量字节数，单位byte 
     *  
     * @param filePath 
     * @return 容量字节 SDCard可用空间，内部存储可用空间 
     */  
    public static long getFreeBytes(String filePath)  
    {  
        // 如果是sd卡的下的路径，则获取sd卡可用容量  
        if (filePath.startsWith(getSDCardPath()))  
        {  
            filePath = getSDCardPath();  
        } else  
        {// 如果是内部存储的路径，则获取内存存储的可用容量  
            filePath = Environment.getDataDirectory().getAbsolutePath();  
        }  
        StatFs stat = new StatFs(filePath);  
        long availableBlocks = (long) stat.getAvailableBlocks() - 4;  
        return stat.getBlockSize() * availableBlocks;  
    }  

    /** 
     * 获取系统存储路径 
     *  
     * @return 
     */  
    public static String getRootDirectoryPath()  
    {  
        return Environment.getRootDirectory().getAbsolutePath();  
    }  


}  




**屏幕相关辅助类 ScreenUtils**


import android.app.Activity;  
import android.content.Context;  
import android.graphics.Bitmap;  
import android.graphics.Rect;  
import android.util.DisplayMetrics;  
import android.view.View;  
import android.view.WindowManager;  

/** 
 * 获得屏幕相关的辅助类 
 *  
 *  
 *  
 */  
public class ScreenUtils  
{  
    private ScreenUtils()  
    {  
        /* cannot be instantiated */  
        throw new UnsupportedOperationException("cannot be instantiated");  
    }  

    /** 
     * 获得屏幕高度 
     *  
     * @param context 
     * @return 
     */  
    public static int getScreenWidth(Context context)  
    {  
        WindowManager wm = (WindowManager) context  
                .getSystemService(Context.WINDOW_SERVICE);  
        DisplayMetrics outMetrics = new DisplayMetrics();  
        wm.getDefaultDisplay().getMetrics(outMetrics);  
        return outMetrics.widthPixels;  
    }  

    /** 
     * 获得屏幕宽度 
     *  
     * @param context 
     * @return 
     */  
    public static int getScreenHeight(Context context)  
    {  
        WindowManager wm = (WindowManager) context  
                .getSystemService(Context.WINDOW_SERVICE);  
        DisplayMetrics outMetrics = new DisplayMetrics();  
        wm.getDefaultDisplay().getMetrics(outMetrics);  
        return outMetrics.heightPixels;  
    }  

    /** 
     * 获得状态栏的高度 
     *  
     * @param context 
     * @return 
     */  
    public static int getStatusHeight(Context context)  
    {  

        int statusHeight = -1;  
        try  
        {  
            Class clazz = Class.forName("com.android.internal.R$dimen");  
            Object object = clazz.newInstance();  
            int height = Integer.parseInt(clazz.getField("status_bar_height")  
                    .get(object).toString());  
            statusHeight = context.getResources().getDimensionPixelSize(height);  
        } catch (Exception e)  
        {  
            e.printStackTrace();  
        }  
        return statusHeight;  
    }  

    /** 
     * 获取当前屏幕截图，包含状态栏 
     *  
     * @param activity 
     * @return 
     */  
    public static Bitmap snapShotWithStatusBar(Activity activity)  
    {  
        View view = activity.getWindow().getDecorView();  
        view.setDrawingCacheEnabled(true);  
        view.buildDrawingCache();  
        Bitmap bmp = view.getDrawingCache();  
        int width = getScreenWidth(activity);  
        int height = getScreenHeight(activity);  
        Bitmap bp = null;  
        bp = Bitmap.createBitmap(bmp, 0, 0, width, height);  
        view.destroyDrawingCache();  
        return bp;  

    }  

    /** 
     * 获取当前屏幕截图，不包含状态栏 
     *  
     * @param activity 
     * @return 
     */  
    public static Bitmap snapShotWithoutStatusBar(Activity activity)  
    {  
        View view = activity.getWindow().getDecorView();  
        view.setDrawingCacheEnabled(true);  
        view.buildDrawingCache();  
        Bitmap bmp = view.getDrawingCache();  
        Rect frame = new Rect();  
        activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);  
        int statusBarHeight = frame.top;  

        int width = getScreenWidth(activity);  
        int height = getScreenHeight(activity);  
        Bitmap bp = null;  
        bp = Bitmap.createBitmap(bmp, 0, statusBarHeight, width, height  
                - statusBarHeight);  
        view.destroyDrawingCache();  
        return bp;  

    }  

}  



**App相关辅助类**


import android.content.Context;  
import android.content.pm.PackageInfo;  
import android.content.pm.PackageManager;  
import android.content.pm.PackageManager.NameNotFoundException;  

/** 
 * 跟App相关的辅助类 
 *  
 *  
 *  
 */  
public class AppUtils  
{  

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

    }  

    /** 
     * 获取应用程序名称 
     */  
    public static String getAppName(Context context)  
    {  
        try  
        {  
            PackageManager packageManager = context.getPackageManager();  
            PackageInfo packageInfo = packageManager.getPackageInfo(  
                    context.getPackageName(), 0);  
            int labelRes = packageInfo.applicationInfo.labelRes;  
            return context.getResources().getString(labelRes);  
        } catch (NameNotFoundException e)  
        {  
            e.printStackTrace();  
        }  
        return null;  
    }  

    /** 
     * [获取应用程序版本名称信息] 
     *  
     * @param context 
     * @return 当前应用的版本名称 
     */  
    public static String getVersionName(Context context)  
    {  
        try  
        {  
            PackageManager packageManager = context.getPackageManager();  
            PackageInfo packageInfo = packageManager.getPackageInfo(  
                    context.getPackageName(), 0);  
            return packageInfo.versionName;  

        } catch (NameNotFoundException e)  
        {  
            e.printStackTrace();  
        }  
        return null;  
    }  

}  




**软键盘相关辅助类KeyBoardUtils**


import android.content.Context;  
import android.view.inputmethod.InputMethodManager;  
import android.widget.EditText;  

/** 
 * 打开或关闭软键盘 
 *  
 * @author zhy 
 *  
 */  
public class KeyBoardUtils  
{  
    /** 
     * 打卡软键盘 
     *  
     * @param mEditText 
     *            输入框 
     * @param mContext 
     *            上下文 
     */  
    public static void openKeybord(EditText mEditText, Context mContext)  
    {  
        InputMethodManager imm = (InputMethodManager) mContext  
                .getSystemService(Context.INPUT_METHOD_SERVICE);  
        imm.showSoftInput(mEditText, InputMethodManager.RESULT_SHOWN);  
        imm.toggleSoftInput(InputMethodManager.SHOW_FORCED,  
                InputMethodManager.HIDE_IMPLICIT_ONLY);  
    }  

    /** 
     * 关闭软键盘 
     *  
     * @param mEditText 
     *            输入框 
     * @param mContext 
     *            上下文 
     */  
    public static void closeKeybord(EditText mEditText, Context mContext)  
    {  
        InputMethodManager imm = (InputMethodManager) mContext  
                .getSystemService(Context.INPUT_METHOD_SERVICE);  

        imm.hideSoftInputFromWindow(mEditText.getWindowToken(), 0);  
    }  
}  



**网络相关辅助类 NetUtils**


import android.app.Activity;  
import android.content.ComponentName;  
import android.content.Context;  
import android.content.Intent;  
import android.net.ConnectivityManager;  
import android.net.NetworkInfo;  

/** 
 * 跟网络相关的工具类 
 *  
 *  
 *  
 */  
public class NetUtils  
{  
    private NetUtils()  
    {  
        /* cannot be instantiated */  
        throw new UnsupportedOperationException("cannot be instantiated");  
    }  

    /** 
     * 判断网络是否连接 
     *  
     * @param context 
     * @return 
     */  
    public static boolean isConnected(Context context)  
    {  

        ConnectivityManager connectivity = (ConnectivityManager) context  
                .getSystemService(Context.CONNECTIVITY_SERVICE);  

        if (null != connectivity)  
        {  

            NetworkInfo info = connectivity.getActiveNetworkInfo();  
            if (null != info && info.isConnected())  
            {  
                if (info.getState() == NetworkInfo.State.CONNECTED)  
                {  
                    return true;  
                }  
            }  
        }  
        return false;  
    }  

    /** 
     * 判断是否是wifi连接 
     */  
    public static boolean isWifi(Context context)  
    {  
        ConnectivityManager cm = (ConnectivityManager) context  
                .getSystemService(Context.CONNECTIVITY_SERVICE);  

        if (cm == null)  
            return false;  
        return cm.getActiveNetworkInfo().getType() == ConnectivityManager.TYPE_WIFI;  

    }  

    /** 
     * 打开网络设置界面 
     */  
    public static void openSetting(Activity activity)  
    {  
        Intent intent = new Intent("/");  
        ComponentName cm = new ComponentName("com.android.settings",  
                "com.android.settings.WirelessSettings");  
        intent.setComponent(cm);  
        intent.setAction("android.intent.action.VIEW");  
        activity.startActivityForResult(intent, 0);  
    }  

}  

Http相关辅助类 HttpUtils**


import java.io.BufferedReader;  
import java.io.ByteArrayOutputStream;  
import java.io.IOException;  
import java.io.InputStream;  
import java.io.InputStreamReader;  
import java.io.PrintWriter;  
import java.net.HttpURLConnection;  
import java.net.URL;  

/** 
 * Http请求的工具类 
 */  
public class HttpUtils  
{  

    private static final int TIMEOUT_IN_MILLIONS = 5000;  

    public interface CallBack  
    {  
        void onRequestComplete(String result);  
    }  


    /** 
     * 异步的Get请求 
     *  
     * @param urlStr 
     * @param callBack 
     */  
    public static void doGetAsyn(final String urlStr, final CallBack callBack)  
    {  
        new Thread()  
        {  
            public void run()  
            {  
                try  
                {  
                    String result = doGet(urlStr);  
                    if (callBack != null)  
                    {  
                        callBack.onRequestComplete(result);  
                    }  
                } catch (Exception e)  
                {  
                    e.printStackTrace();  
                }  

            };  
        }.start();  
    }  

    /** 
     * 异步的Post请求 
     * @param urlStr 
     * @param params 
     * @param callBack 
     * @throws Exception 
     */  
    public static void doPostAsyn(final String urlStr, final String params,  
            final CallBack callBack) throws Exception  
    {  
        new Thread()  
        {  
            public void run()  
            {  
                try  
                {  
                    String result = doPost(urlStr, params);  
                    if (callBack != null)  
                    {  
                        callBack.onRequestComplete(result);  
                    }  
                } catch (Exception e)  
                {  
                    e.printStackTrace();  
                }  

            };  
        }.start();  

    }  

    /** 
     * Get请求，获得返回数据 
     *  
     * @param urlStr 
     * @return 
     * @throws Exception 
     */  
    public static String doGet(String urlStr)   
    {  
        URL url = null;  
        HttpURLConnection conn = null;  
        InputStream is = null;  
        ByteArrayOutputStream baos = null;  
        try  
        {  
            url = new URL(urlStr);  
            conn = (HttpURLConnection) url.openConnection();  
            conn.setReadTimeout(TIMEOUT_IN_MILLIONS);  
            conn.setConnectTimeout(TIMEOUT_IN_MILLIONS);  
            conn.setRequestMethod("GET");  
            conn.setRequestProperty("accept", "*/*");  
            conn.setRequestProperty("connection", "Keep-Alive");  
            if (conn.getResponseCode() == 200)  
            {  
                is = conn.getInputStream();  
                baos = new ByteArrayOutputStream();  
                int len = -1;  
                byte[] buf = new byte[128];  

                while ((len = is.read(buf)) != -1)  
                {  
                    baos.write(buf, 0, len);  
                }  
                baos.flush();  
                return baos.toString();  
            } else  
            {  
                throw new RuntimeException(" responseCode is not 200 ... ");  
            }  

        } catch (Exception e)  
        {  
            e.printStackTrace();  
        } finally  
        {  
            try  
            {  
                if (is != null)  
                    is.close();  
            } catch (IOException e)  
            {  
            }  
            try  
            {  
                if (baos != null)  
                    baos.close();  
            } catch (IOException e)  
            {  
            }  
            conn.disconnect();  
        }  

        return null ;  

    }  

    /**  
     * 向指定 URL 发送POST方法的请求  
     *   
     * @param url  
     *            发送请求的 URL  
     * @param param  
     *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。  
     * @return 所代表远程资源的响应结果  
     * @throws Exception  
     */  
    public static String doPost(String url, String param)   
    {  
        PrintWriter out = null;  
        BufferedReader in = null;  
        String result = "";  
        try  
        {  
            URL realUrl = new URL(url);  
            // 打开和URL之间的连接  
            HttpURLConnection conn = (HttpURLConnection) realUrl  
                    .openConnection();  
            // 设置通用的请求属性  
            conn.setRequestProperty("accept", "*/*");  
            conn.setRequestProperty("connection", "Keep-Alive");  
            conn.setRequestMethod("POST");  
            conn.setRequestProperty("Content-Type",  
                    "application/x-www-form-urlencoded");  
            conn.setRequestProperty("charset", "utf-8");  
            conn.setUseCaches(false);  
            // 发送POST请求必须设置如下两行  
            conn.setDoOutput(true);  
            conn.setDoInput(true);  
            conn.setReadTimeout(TIMEOUT_IN_MILLIONS);  
            conn.setConnectTimeout(TIMEOUT_IN_MILLIONS);  

            if (param != null && !param.trim().equals(""))  
            {  
                // 获取URLConnection对象对应的输出流  
                out = new PrintWriter(conn.getOutputStream());  
                // 发送请求参数  
                out.print(param);  
                // flush输出流的缓冲  
                out.flush();  
            }  
            // 定义BufferedReader输入流来读取URL的响应  
            in = new BufferedReader(  
                    new InputStreamReader(conn.getInputStream()));  
            String line;  
            while ((line = in.readLine()) != null)  
            {  
                result += line;  
            }  
        } catch (Exception e)  
        {  
            e.printStackTrace();  
        }  
        // 使用finally块来关闭输出流、输入流  
        finally  
        {  
            try  
            {  
                if (out != null)  
                {  
                    out.close();  
                }  
                if (in != null)  
                {  
                    in.close();  
                }  
            } catch (IOException ex)  
            {  
                ex.printStackTrace();  
            }  
        }  
        return result;  
    }  
}