布局优化，存储和获取DeviceID

app/src/main/java/com/gh/common/util/TokenUtils.java

@@ -3,6 +3,7 @@ package com.gh.common.util;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.content.SharedPreferences.Editor;
+import android.os.Environment;
 
 import com.gh.common.constant.Config;
 
@@ -10,6 +11,10 @@ import org.json.JSONException;
 import org.json.JSONObject;
 
 import java.io.BufferedReader;
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.OutputStreamWriter;
@@ -107,4 +112,135 @@ public class TokenUtils {
 		return null;
 	}
 
+	public static void saveDeviceID(String deviceID, Context context){
+		saveSharedPreferences(deviceID, context);
+		saveDataFile(deviceID, context);
+		svaeSDCard(deviceID, "");//SDCard根目录
+		svaeSDCard(deviceID, "/system");//SDCard system目录
+		svaeSDCard(deviceID, "/data");//SDCard data目录
+	}
+
+	//将uuid存到sp
+	private static void saveSharedPreferences(String deviceID, Context context) {
+		SharedPreferences sp = context.getSharedPreferences("UUID", Context.MODE_PRIVATE);
+		SharedPreferences.Editor edit = sp.edit();
+		edit.putString("uuid", deviceID);
+		edit.commit();
+		Utils.log("saveDeviceID", "保存成功SP");
+	}
+
+	//将uuid存到data/data/PackageName/files文件夹下
+	private static void saveDataFile(String deviceID, Context context) {
+		FileOutputStream fops;
+		try {
+			fops = context.openFileOutput("uuid", Context.MODE_PRIVATE);
+			fops.write(deviceID.getBytes());
+			fops.close();
+			Utils.log("saveDeviceID", "保存成功DataFile");
+		} catch (Exception e) {
+			Utils.log("保存uuid到data/data/PackageName/files文件异常" + e.toString());
+			e.printStackTrace();
+		}
+	}
+
+	//将uuid存到SD卡
+	private static void svaeSDCard(String deviceID,String saveDir) {
+		File sdCardDir  = Environment.getExternalStorageDirectory();
+		String path = sdCardDir.getPath() + saveDir + "/gh-uuid";
+
+		File file = new File(path);
+		if (!file.exists()){
+			file.mkdir();
+		}
+
+		File writeFile = new File(file, "uuid");
+		FileOutputStream fos;
+		try {
+			fos = new FileOutputStream(writeFile);
+			fos.write(deviceID.getBytes());
+			fos.close();
+			Utils.log("saveDeviceID", "保存成功SDCard"+"目录为："+saveDir);
+		} catch (Exception e) {
+			Utils.log("保存uuid到SDCard异常" + saveDir + e.toString());
+			e.printStackTrace();
+		}
+
+	}
+
+	public static String getDeviceID(Context context){
+		loadDataFile(context);
+		loadSDCard("");
+		loadSDCard("/system");
+		loadSDCard("/data");
+		return loadSharedPreferences(context);
+	}
+
+	//读取SharedPreferences的uuid
+	private static String loadSharedPreferences(Context context) {
+		SharedPreferences sp = context.getSharedPreferences("UUID", Context.MODE_PRIVATE);
+		String uuid = sp.getString("uuid", "-1");
+		if ("-1".equals(uuid)){
+			return loadDataFile(context);
+		}
+		Utils.log("getDeviceID", "获取成功SP" + uuid);
+		return "";
+	}
+
+	//读取data/data/PackageName/files的uuid
+	private static String loadDataFile(Context context) {
+		File file = new File(context.getFilesDir(), "uuid");
+		if (file.exists()){
+			try {
+				FileInputStream fis = new FileInputStream(file);
+				byte[] b = new byte[1024];
+				int count = -1;
+				String uuid = "";
+				while ((count = fis.read(b)) != -1) {
+					uuid = new String(b, 0, count, "UTF-8");
+				}
+				Utils.log("getDeviceID", "获取成功DataFile"+ uuid);
+				return uuid;
+			} catch (Exception e) {
+				e.printStackTrace();
+			}
+		}else {
+
+			String[] dirName = {"", "/system", "/data"};
+			for (int i = 0; i<3; i++){
+				String s = loadSDCard(dirName[i]);
+				if (!s.isEmpty()){
+					return s;
+				}
+			}
+		}
+
+		return "";
+	}
+
+	//读取SD卡的uuid
+	private static String loadSDCard(String saveDir){
+		File sdCardDir  = Environment.getExternalStorageDirectory();
+		String path = sdCardDir.getPath() + saveDir + "/gh-uuid";
+		File file = new File(path, "uuid");
+		if (file.exists()){
+			FileInputStream fis = null;
+			try {
+				fis = new FileInputStream(file);
+				ByteArrayOutputStream bos = new ByteArrayOutputStream();
+				byte[] array = new byte[1024];
+				int len = -1;
+				while( (len = fis.read(array)) != -1){
+					bos.write(array,0,len);
+				}
+				bos.close();
+				fis.close();
+				Utils.log("getDeviceID", "获取成功SDCard"+"目录为："+saveDir+"::"+bos.toString());
+				return bos.toString();
+			} catch (Exception e) {
+				e.printStackTrace();
+			}
+		}
+		return "";
+	}
+
 }