选择器

example/lib/main.dart

 class _MyHomePageState extends State<MyHomePage> {
   int _counter = 0;
 
-  void _incrementCounter() {
-    PhotoPicker.pickImage(
+  void _incrementCounter() async{
+    var imgList = await PhotoPicker.pickImage(
       context: context,
       themeColor: Colors.green,
       padding: 5.0,
       dividerColor: Colors.deepOrange,
-      disableColor: Colors.grey,
+      disableColor: Colors.grey.shade300,
       itemRadio: 0.88,
     );
+
+    print(imgList);
   }
 
   @override
     );
   }
 
-  void _test(){
-//    Navigator.of(context).pop
-  }
 }

lib/photo.dart

 
     themeColor ??= Theme.of(context)?.primaryColor ?? Colors.black;
     dividerColor ??= Theme.of(context)?.dividerColor ?? Colors.grey;
-    disableColor ??= Theme.of(context)?.dividerColor ?? Colors.grey;
+    disableColor ??= Theme.of(context)?.disabledColor ?? Colors.grey;
     textColor ??= Colors.white;
 
     var options = Options(
       maxSelected: maxSelected,
       itemRadio:itemRadio,
       padding: padding,
-      paddingColor: disableColor,
+      disableColor: disableColor,
       textColor: textColor,
       themeColor: themeColor,
     );

lib/src/entity/options.dart

 
   final Color textColor;
 
-  final Color paddingColor;
+  final Color disableColor;
 
   const Options({
     this.rowCount,
     this.themeColor,
     this.dividerColor,
     this.textColor,
-    this.paddingColor,
+    this.disableColor,
   });
 
-  @override
-  String toString() {
-    return 'Options{rowCount: $rowCount, maxSelected: $maxSelected, padding: $padding, themeColor: $themeColor, dividerColor: $dividerColor, textColor: $textColor, paddingColor: $paddingColor}';
-  }
+
 }

lib/src/page/photo_main_page.dart

       color: options.textColor,
       fontSize: 14.0,
     );
-    return DefaultTextStyle(
-      style: textStyle,
-      child: Scaffold(
-        appBar: AppBar(
-          backgroundColor: options.themeColor,
-          title: Text(
-            i18nProvider.getTitleText(options),
-          ),
-          actions: <Widget>[
-            FlatButton(
-              child: Text(
-                i18nProvider.getSureText(options, this),
-                style: textStyle,
-              ),
-              onPressed: sure,
+    return WillPopScope(
+      child: DefaultTextStyle(
+        style: textStyle,
+        child: Scaffold(
+          appBar: AppBar(
+            backgroundColor: options.themeColor,
+            title: Text(
+              i18nProvider.getTitleText(options),
             ),
-          ],
-        ),
-        body: _buildBody(),
-        bottomSheet: _BottomWidget(
-          provider: i18nProvider,
-          options: options,
-          onGalleryChange: _onGalleryChange,
-          selectedProvider: this,
+            actions: <Widget>[
+              FlatButton(
+                child: Text(
+                  i18nProvider.getSureText(options, this),
+                  style: selectedCount == 0
+                      ? textStyle.copyWith(color: options.disableColor)
+                      : textStyle,
+                ),
+                onPressed: selectedCount == 0 ? null : sure,
+              ),
+            ],
+          ),
+          body: _buildBody(),
+          bottomNavigationBar: _BottomWidget(
+            provider: i18nProvider,
+            options: options,
+            onGalleryChange: _onGalleryChange,
+            selectedProvider: this,
+          ),
         ),
       ),
+      onWillPop: () async {
+        selectedList.clear();
+        Navigator.of(context).pop(selectedList);
+        return false;
+      },
     );
   }
 
 
   Widget _buildBody() {
     return Container(
-      color: options.paddingColor,
+      color: options.disableColor,
       child: GridView.builder(
         gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
           crossAxisCount: options.rowCount,
     setState(() {});
   }
 
-  void sure() {}
+  void sure() {
+    Navigator.pop(context, selectedList);
+  }
 
   void _onItemClick(ImageEntity data) {}
 
 
   @override
   Widget build(BuildContext context) {
+    var textStyle = TextStyle(fontSize: 14.0, color: options.textColor);
+    print(MediaQuery.of(context).padding.bottom);
     return Container(
       color: options.themeColor,
-      height: 44.0,
-      child: Row(
-        children: <Widget>[
-          Text(
-            widget.galleryName,
+      child: SafeArea(
+        bottom: true,
+        child: Container(
+          height: 44.0,
+          child: Row(
+            children: <Widget>[
+              Text(
+                widget.galleryName,
+                style: textStyle,
+              ),
+              Expanded(
+                child: Container(),
+              ),
+              Container(
+                height: 44.0,
+                alignment: Alignment.center,
+                child: Text(
+                  i18nProvider.getPreviewText(options, widget.selectedProvider),
+                  style: textStyle,
+                ),
+                padding: const EdgeInsets.symmetric(horizontal: 8.0),
+              ),
+            ],
           ),
-        ],
+        ),
       ),
     );
   }

lib/src/provider/i18n_provider.dart

 
   String getMaxTipText(Options options);
 
+  String getAllGalleryText(Options options);
+
   I18NPermissionProvider getNotPermissionText(Options options);
 
   static const I18nProvider chinese = _CNProvider();
     return "您已经选择了${options.maxSelected}张图片";
   }
 
+  @override
+  String getAllGalleryText(Options options) {
+    return "全部图片";
+  }
+
   @override
   I18NPermissionProvider getNotPermissionText(Options options) {
     return I18NPermissionProvider(
     return "select ${options.maxSelected} pictures at most";
   }
 
+  @override
+  String getAllGalleryText(Options options) {
+    return "all images";
+  }
+
   @override
   I18NPermissionProvider getNotPermissionText(Options options) {
     return I18NPermissionProvider(