增加图片保存到本地的支持

CarGuo · CarGuo · commit dc01aaf82a24 · 2018-09-18T17:13:14.000+08:00
diff --git a/RECORD.md b/RECORD.md
@@ -1,4 +1,20 @@
 
+
+https://github.com/flutter/plugins/tree/master/packages/webview_flutter  
+未发布的
+
+
+
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+
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+
+
+
 ### String 字符串
 
 在哪里存储字符串? 如何存储不同的语言
diff --git a/VERSION.md b/VERSION.md
@@ -6,6 +6,7 @@
 * webview点击跳转。
 * markdown htmlview 表格。
 * 版本信息列表
+* 监听滚动，设置底部和顶部隐藏显示
 
 ### 1.1.3
 * 修复详情tab切换问题。
diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
@@ -6,6 +6,7 @@
          to allow setting breakpoints, to provide hot reload, etc.
     -->
     <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
 
     <!-- io.flutter.app.FlutterApplication is an android.app.Application that
          calls FlutterMain.startInitialization(this); in its onCreate method.
diff --git a/lib/common/utils/CommonUtils.dart b/lib/common/utils/CommonUtils.dart
@@ -1,8 +1,10 @@
 import 'dart:async';
 import 'dart:convert';
+import 'dart:io';
 
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:flutter_cache_manager/flutter_cache_manager.dart';
 import 'package:fluttertoast/fluttertoast.dart';
 import 'package:gsy_github_app_flutter/common/localization/DefaultLocalizations.dart';
 import 'package:gsy_github_app_flutter/common/net/Address.dart';
@@ -14,7 +16,9 @@ import 'package:gsy_github_app_flutter/common/style/GSYStyle.dart';
 import 'package:gsy_github_app_flutter/common/utils/NavigatorUtils.dart';
 import 'package:gsy_github_app_flutter/widget/GSYFlexButton.dart';
 import 'package:gsy_github_app_flutter/widget/IssueEditDIalog.dart';
+import 'package:permission_handler/permission_handler.dart';
 import 'package:flutter_spinkit/flutter_spinkit.dart';
+import 'package:path_provider/path_provider.dart';
 import 'package:redux/redux.dart';
 import 'package:url_launcher/url_launcher.dart';
 import 'package:flutter_statusbar/flutter_statusbar.dart';
@@ -73,6 +77,43 @@ class CommonUtils {
     }
   }
 
+  static getLocalPath() async {
+    Directory appDir;
+    if (Platform.isIOS) {
+      appDir = await getApplicationDocumentsDirectory();
+    } else {
+      appDir = await getExternalStorageDirectory();
+    }
+    PermissionStatus permission = await PermissionHandler().checkPermissionStatus(PermissionGroup.storage);
+    if (permission != PermissionStatus.granted) {
+      Map<PermissionGroup, PermissionStatus> permissions = await PermissionHandler().requestPermissions([PermissionGroup.storage]);
+      if (permissions[PermissionGroup.storage] != PermissionStatus.granted) {
+        return null;
+      }
+    }
+    String appDocPath = appDir.path + "/gsygithubappflutter";
+    Directory appPath = Directory(appDocPath);
+    await appPath.create(recursive: true);
+    return appPath;
+  }
+
+  static saveImage(String url) async  {
+    Future<String> _findPath(String imageUrl) async {
+      final cache = await CacheManager.getInstance();
+      final file = await cache.getFile(imageUrl);
+      if(file == null) {
+        return null;
+      }
+      Directory localPath = await CommonUtils.getLocalPath();
+      if(localPath == null) {
+        return null;
+      }
+      final result = await file.copy(localPath.path + file.path.substring(file.path.lastIndexOf("/")));
+      return result.path;
+    }
+    return _findPath(url);
+  }
+
   static getFullName(String repository_url) {
     if (repository_url != null && repository_url.substring(repository_url.length - 1) == "/") {
       repository_url = repository_url.substring(0, repository_url.length - 1);
diff --git a/lib/page/PhotoViewPage.dart b/lib/page/PhotoViewPage.dart
@@ -1,6 +1,8 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_spinkit/flutter_spinkit.dart';
+import 'package:fluttertoast/fluttertoast.dart';
 import 'package:gsy_github_app_flutter/common/style/GSYStyle.dart';
+import 'package:gsy_github_app_flutter/common/utils/CommonUtils.dart';
 import 'package:gsy_github_app_flutter/widget/GSYCommonOptionWidget.dart';
 import 'package:gsy_github_app_flutter/widget/GSYTitleBar.dart';
 import 'package:photo_view/photo_view.dart';
@@ -21,6 +23,16 @@ class PhotoViewPage extends StatelessWidget {
     OptionControl optionControl = new OptionControl();
     optionControl.url = url;
     return new Scaffold(
+        floatingActionButton: new FloatingActionButton(
+          child: new Icon(Icons.file_download),
+          onPressed: () {
+            CommonUtils.saveImage(url).then((res) {
+              if (res != null) {
+                Fluttertoast.showToast(msg: res);
+              }
+            });
+          },
+        ),
         appBar: new AppBar(
           title: GSYTitleBar("", rightWidget: new GSYCommonOptionWidget(optionControl)),
         ),
@@ -31,7 +43,7 @@ class PhotoViewPage extends StatelessWidget {
             loadingChild: Container(
               child: new Stack(
                 children: <Widget>[
-                  new Center(child: new Image.asset(GSYICons.DEFAULT_IMAGE, height: 150.0, width: 150.0)),
+                  new Center(child: new Image.asset(GSYICons.DEFAULT_IMAGE, height: 180.0, width: 180.0)),
                   new Center(child: new SpinKitFoldingCube(color: Colors.white30, size: 60.0)),
                 ],
               ),
diff --git a/pubspec.lock b/pubspec.lock
@@ -188,6 +188,13 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_cache_manager:
+    dependency: "direct main"
+    description:
+      name: flutter_cache_manager
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.2"
   flutter_localizations:
     dependency: "direct main"
     description: flutter
@@ -284,6 +291,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.13.3+3"
+  http:
+    dependency: transitive
+    description:
+      name: http
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.11.3+17"
   http_multi_server:
     dependency: transitive
     description:
@@ -403,6 +417,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.1.2"
+  path_provider:
+    dependency: "direct main"
+    description:
+      name: path_provider
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.4.1"
+  permission_handler:
+    dependency: "direct main"
+    description:
+      name: permission_handler
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.0"
   petitparser:
     dependency: transitive
     description:
@@ -569,6 +597,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.9.0+5"
+  uuid:
+    dependency: transitive
+    description:
+      name: uuid
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.3"
   vector_math:
     dependency: transitive
     description:
diff --git a/pubspec.yaml b/pubspec.yaml
@@ -30,6 +30,9 @@ dependencies:
   flutter_localizations:
     sdk: flutter
   event_bus:  ^1.0.1
+  flutter_cache_manager: ^0.1.2
+  path_provider: ^0.4.1
+  permission_handler: ^2.0.0
 
 dev_dependencies:
   build_runner: ^0.10.1+1
