Add removeFile in example

Author: renefloor

flutter_cache_manager/example/lib/main.dart

@@ -51,6 +51,7 @@ class _CacheManagerPageState extends State<CacheManagerPage> {
       fileStream: fileStream,
       downloadFile: _downloadFile,
       clearCache: _clearCache,
+      removeFile: _removeFile,
     );
   }
 
@@ -60,4 +61,15 @@ class _CacheManagerPageState extends State<CacheManagerPage> {
       fileStream = null;
     });
   }
+
+  void _removeFile() {
+    DefaultCacheManager().removeFile(url).then((value) {
+      print('File removed');
+    }).onError((error, stackTrace) {
+      print(error);
+    });
+    setState(() {
+      fileStream = null;
+    });
+  }
 }

flutter_cache_manager/example/lib/plugin_example/download_page.dart

@@ -10,10 +10,15 @@ class DownloadPage extends StatelessWidget {
   final Stream<FileResponse> fileStream;
   final VoidCallback downloadFile;
   final VoidCallback clearCache;
+  final VoidCallback removeFile;
 
-  const DownloadPage(
-      {Key key, this.fileStream, this.downloadFile, this.clearCache})
-      : super(key: key);
+  const DownloadPage({
+    Key key,
+    this.fileStream,
+    this.downloadFile,
+    this.clearCache,
+    this.removeFile,
+  }) : super(key: key);
 
   @override
   Widget build(BuildContext context) {
@@ -36,6 +41,7 @@ class DownloadPage extends StatelessWidget {
           body = FileInfoWidget(
             fileInfo: snapshot.data as FileInfo,
             clearCache: clearCache,
+            removeFile: removeFile,
           );
         }
 

flutter_cache_manager/example/lib/plugin_example/file_info_widget.dart

@@ -5,9 +5,15 @@ import 'package:flutter_cache_manager/flutter_cache_manager.dart';
 class FileInfoWidget extends StatelessWidget {
   final FileInfo fileInfo;
   final VoidCallback clearCache;
+  final VoidCallback removeFile;
+
+  const FileInfoWidget({
+    Key key,
+    this.fileInfo,
+    this.clearCache,
+    this.removeFile,
+  }) : super(key: key);
 
-  const FileInfoWidget({Key key, this.fileInfo, this.clearCache})
-      : super(key: key);
   @override
   Widget build(BuildContext context) {
     return ListView(
@@ -37,6 +43,14 @@ class FileInfoWidget extends StatelessWidget {
             onPressed: clearCache,
           ),
         ),
+        Padding(
+          padding: const EdgeInsets.all(10.0),
+          // ignore: deprecated_member_use
+          child: RaisedButton(
+            child: const Text('REMOVE FILE'),
+            onPressed: removeFile,
+          ),
+        ),
       ],
     );
   }