1、日志工具類L.java
```
package com.zhy.utils;???
import android.util.Log;???
/** * Log統一管理類 *?? *?? *?? */??
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函數里面初始化??????
private static final String TAG = "way";????// 下面四個是默認tag的函數??????
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);??????}?? // 下面是傳入自定義tag的函數??????
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);??????}??}?
```
? ?? ?
2、Toast統一管理類?
···
package com.zhy.utils;???
import android.content.Context;??
import android.widget.Toast;???/** * Toast統一管理類 *?? */??public class T??{???????
private T()??????{?????????
?/** 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();??????}???}
```
3、SharedPreferences封裝類SPUtils
```
package com.zhy.utils;??
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??
{??
????/**
???? * 保存在手機里面的文件名
???? */??
????public static final String FILE_NAME = "share_data";??
????/**
???? * 保存數據的方法，我們需要拿到保存數據的具體類型，然后根據類型調用不同的保存方法
???? *??
???? * @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);??
????}??
????/**
???? * 得到保存數據的方法，我們根據默認值得到保存的數據的具體類型，然后調用相對于的方法獲取值
???? *??
???? * @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;??
????}??
????/**
???? * 移除某個key值已經對應的值
???? * @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);??
????}??
????/**
???? * 清除所有數據
???? * @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);??
????}??
????/**
???? * 查詢某個key是否已經存在
???? * @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);??
????}??
????/**
???? * 返回所有的鍵值對
???? *??
???? * @param context
???? * @return
???? */??
????public static Map getAll(Context context)??
????{??
????????SharedPreferences sp = context.getSharedPreferences(FILE_NAME,??
????????????????Context.MODE_PRIVATE);??
????????return sp.getAll();??
????}??
????/**
???? * 創建一個解決SharedPreferencesCompat.apply方法的一個兼容類
???? *??
???? * @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;??
????????}??
????????/**
???????? * 如果找到則使用apply執行，否則使用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();??
????????}??
????}??
}
```
對SharedPreference的使用做了建議的封裝，對外公布出put，get，remove，clear等等方法；
注意一點，里面所有的commit操作使用了SharedPreferencesCompat.apply進行了替代，目的是盡可能的使用apply代替commit
首先說下為什么，因為commit方法是同步的，并且我們很多時候的commit操作都是UI線程中，畢竟是IO操作，盡可能異步；
所以我們使用apply進行替代，apply異步的進行寫入；
但是apply相當于commit來說是new API呢，為了更好的兼容，我們做了適配；
SharedPreferencesCompat也可以給大家創建兼容類提供了一定的參考~~
4、單位轉換類?DensityUtils
```
?package com.zhy.utils;??
????import android.content.Context;??
????import android.util.TypedValue;??
????/**
???? * 常用單位轉換的輔助類
???? *??
???? *??
???? *??
???? */??
????public class DensityUtils??
????{??
????????private DensityUtils()??
????????{??
????????????/** cannot be instantiated **/??
????????????throw new UnsupportedOperationException("cannot be instantiated");??
????????}??
????????/**
???????? * dp轉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轉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轉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轉sp
???????????????? *??
???????????????? * @param fontScale
???????????????? * @param pxVal
???????????????? * @return
???????????????? */??
????????????????public static float px2sp(Context context, float pxVal)??
????????????????{??
????????????????????return (pxVal / context.getResources().getDisplayMetrics().scaledDensity);??
????????????????}??
????????????}
```
5、SD卡相關輔助類?SDCardUtils
```
package com.zhy.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卡的剩余容量 單位byte
???? *??
???? * @return
???? */??
????public static long getSDCardAllSize()??
????{??
????????if (isSDCardEnable())??
????????{??
????????????StatFs stat = new StatFs(getSDCardPath());??
????????????// 獲取空閑的數據塊的數量??
????????????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余可用容量字節數，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();??
????}??
}
```
6、屏幕相關輔助類?ScreenUtils
```
?package com.zhy.utils;??
????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;??
????/**
???? * 獲得屏幕相關的輔助類
???? *??
???? *??
???? *??
???? */??
????public class ScreenUtils??
????{??
????????private ScreenUtils()??
????????{??
????????????/** cannot be instantiated **/??
????????????throw new UnsupportedOperationException("cannot be instantiated");??
????????}??
????????/**
???????? * 獲得屏幕高度
???????? *??
???????? * @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;??
????????}??
????????/**
???????? * 獲得屏幕寬度
???????? *??
???????? * @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;??
????????}??
????????/**
???????? * 獲得狀態欄的高度
???????? *??
???????? * @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;??
????????}??
????????/**
???????? * 獲取當前屏幕截圖，包含狀態欄
???????? *??
???????? * @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;??
????????}??
????????/**
???????? * 獲取當前屏幕截圖，不包含狀態欄
???????? *??
???????? * @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;??
????????}??
????}
```
7、App相關輔助類
```
?package com.zhy.utils;??
????import android.content.Context;??
????import android.content.pm.PackageInfo;??
????import android.content.pm.PackageManager;??
????import android.content.pm.PackageManager.NameNotFoundException;??
????/**
???? * 跟App相關的輔助類
???? *??
???? *??
???? *??
???? */??
????public class AppUtils??
????{??
????????private AppUtils()??
????????{??
????????????/**cannot be instantiated **/??
????????????throw new UnsupportedOperationException("cannot be instantiated");??
????????}??
????????/**
???????? * 獲取應用程序名稱
???????? */??
????????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;??
????????}??
????????/**
???????? * [獲取應用程序版本名稱信息]
???????? *??
???????? * @param context
???????? * @return 當前應用的版本名稱
???????? */??
????????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;??
????????}??
????}
```
8、軟鍵盤相關輔助類KeyBoardUtils
```
package com.zhy.utils;??
????import android.content.Context;??
????import android.view.inputmethod.InputMethodManager;??
????import android.widget.EditText;??
????/**
???? * 打開或關閉軟鍵盤
???? *??
???? * @author zhy
???? *??
???? */??
????public class KeyBoardUtils??
????{??
????????/**
???????? * 打卡軟鍵盤
???????? *??
???????? * @param mEditText
???????? *????????????輸入框
???????? * @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);??
????????}??
????????/**
???????? * 關閉軟鍵盤
???????? *??
???????? * @param mEditText
???????? *????????????輸入框
???????? * @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);??
????????}??
????}
```
9、網絡相關輔助類?NetUtils
```
?package com.zhy.utils;??
????import android.app.Activity;??
????import android.content.ComponentName;??
????import android.content.Context;??
????import android.content.Intent;??
????import android.net.ConnectivityManager;??
????import android.net.NetworkInfo;??
????/**
???? * 跟網絡相關的工具類
???? *??
???? *??
???? *??
???? */??
????public class NetUtils??
????{??
????????private NetUtils()??
????????{??
????????????/** cannot be instantiated **/??
????????????throw new UnsupportedOperationException("cannot be instantiated");??
????????}??
????????/**
???????? * 判斷網絡是否連接
???????? *??
???????? * @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;??
????????}??
????????/**
???????? * 判斷是否是wifi連接
???????? */??
????????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;??
????????}??
????????/**
???????? * 打開網絡設置界面
???????? */??
????????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);??
????????}??
????}
```
10、Http相關輔助類?HttpUtils
```
package com.zhy.utils;??
????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請求的工具類
???? *??
???? * @author zhy
???? *??
???? */??
????public class HttpUtils??
????{??
????????private static final int TIMEOUT_IN_MILLIONS = 5000;??
????????public interface CallBack??
????????{??
????????????void onRequestComplete(String result);??
????????}??
????????/**
???????? * 異步的Get請求
???????? *??
???????? * @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();??
????????}??
????????/**
???????? * 異步的Post請求
???????? * @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請求，獲得返回數據
???????? *??
???????? * @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 發送POST方法的請求??
???????? *??
???????? * @param url??
???????? *????????????發送請求的 URL??
???????? * @param param??
???????? *????????????請求參數，請求參數應該是 name1=value1&name2=value2 的形式。??
???????? * @return 所代表遠程資源的響應結果??
???????? * @throws Exception??
???????? */??
????????public static String doPost(String url, String param)??
????????{??
????????????PrintWriter out = null;??
????????????BufferedReader in = null;??
????????????String result = "";??
????????????try??
????????????{??
????????????????URL realUrl = new URL(url);??
????????????????// 打開和URL之間的連接??
????????????????HttpURLConnection conn = (HttpURLConnection) realUrl??
????????????????????????.openConnection();??
????????????????// 設置通用的請求屬性??
????????????????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);??
????????????????// 發送POST請求必須設置如下兩行??
????????????????conn.setDoOutput(true);??
????????????????conn.setDoInput(true);??
????????????????conn.setReadTimeout(TIMEOUT_IN_MILLIONS);??
????????????????conn.setConnectTimeout(TIMEOUT_IN_MILLIONS);??
????????????????if (param != null && !param.trim().equals(""))??
????????????????{??
????????????????????// 獲取URLConnection對象對應的輸出流??
????????????????????out = new PrintWriter(conn.getOutputStream());??
????????????????????// 發送請求參數??
????????????????????out.print(param);??
????????????????????// flush輸出流的緩沖??
????????????????????out.flush();??
????????????????}??
????????????????// 定義BufferedReader輸入流來讀取URL的響應??
????????????????in = new BufferedReader(??
????????????????????????new InputStreamReader(conn.getInputStream()));??
????????????????String line;??
????????????????while ((line = in.readLine()) != null)??
????????????????{??
????????????????????result += line;??
????????????????}??
????????????} catch (Exception e)??
????????????{??
????????????????e.printStackTrace();??
????????????}??
????????????// 使用finally塊來關閉輸出流、輸入流??
????????????finally??
????????????{??
????????????????try??
????????????????{??
????????????????????if (out != null)??
????????????????????{??
????????????????????????out.close();??
????????????????????}??
????????????????????if (in != null)??
????????????????????{??
????????????????????????in.close();??
????????????????????}??
????????????????} catch (IOException ex)??
????????????????{??
????????????????????ex.printStackTrace();??
????????????????}??
????????????}??
????????????return result;??
????????}??
????}
```
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