feature：增加重命名弹窗以及时间戳重命名

lib/utils/github_net.dart

@@ -13,7 +13,11 @@ Map<String, dynamic> optHeader = {
 };
 
 var dio = new Dio(BaseOptions(
-    connectTimeout: 30000, headers: optHeader, baseUrl: GithubApi.BASE_URL));
+    connectTimeout: 10000,
+    receiveTimeout: 10000,
+    sendTimeout: 10000,
+    headers: optHeader,
+    baseUrl: GithubApi.BASE_URL));
 
 class GithubNetUtils {
   static Future get(String url, {Map<String, dynamic> params}) async {

lib/views/upload_page/upload_page.dart

@@ -14,7 +14,7 @@ class UploadPage extends StatefulWidget {
 class _UploadPageState extends State<UploadPage> implements UploadPageContract {
   String _title = '';
   String _previewPath = '';
-  String _renameImage = '';
+  String _renameImage ;
   TextEditingController _controller;
   int _selectButton = 1;
 
@@ -169,11 +169,11 @@ class _UploadPageState extends State<UploadPage> implements UploadPageContract {
         /// 获取文件后缀
         String suffix = path.extension(pickedFile.path);
         String filename = path.basenameWithoutExtension(pickedFile.path);
-        String realSettingImageName = settingIsTimestampRename
+        _renameImage = settingIsTimestampRename
             ? '${new DateTime.now().millisecondsSinceEpoch.toString()}$suffix'
             : '$filename$suffix';
         if (settingIsUploadedRename) {
-          _controller = TextEditingController(text: realSettingImageName);
+          _controller = TextEditingController(text: _renameImage);
           await showDialog(
             context: context,
             barrierDismissible: false,
@@ -218,7 +218,7 @@ class _UploadPageState extends State<UploadPage> implements UploadPageContract {
             loading: true,
             loadingText: "上传中",
             requestCallBack:
-                _presenter.doUploadImage(new File(this._previewPath)),
+                _presenter.doUploadImage(new File(this._previewPath), _renameImage),
           );
         });
   }

lib/views/upload_page/upload_page_presenter.dart

@@ -1,5 +1,7 @@
 import 'dart:convert';
 import 'dart:io';
+import 'package:dio/dio.dart';
+import 'package:flutter/cupertino.dart';
 import 'package:flutter_picgo/model/github_config.dart';
 import 'package:flutter_picgo/resources/table_name_keys.dart';
 import 'package:flutter_picgo/utils/encrypt.dart';
@@ -35,7 +37,7 @@ class UploadPagePresenter {
   }
 
   /// 根据配置上传图片
-  doUploadImage(File file) async {
+  doUploadImage(File file, String renameImage) async {
     // 读取配置
     try {
       var sp = await SpUtil.getInstance();
@@ -52,7 +54,7 @@ class UploadPagePresenter {
           config.repositoryName,
           'contents',
           config.storagePath,
-          path.basename(file.path)
+          renameImage
         ]);
         var result = await GithubNetUtils.put(realUrl, {
           "message": "Upload by Flutter-PicGo",
@@ -68,9 +70,11 @@ class UploadPagePresenter {
       } else {
         _view.uploadFaild('读取配置错误，请重试!');
       }
+    } on DioError catch (e) {
+      debugPrint(e.message);
+      _view.uploadFaild('${e.message}');
     } catch (e) {
-      print(e);
-      _view.uploadFaild('$e');
+      _view.uploadFaild('未知异常');
     }
   }
 }