update readme and example comment

README.md

@@ -37,37 +37,43 @@ import 'package:photo_manager/photo_manager.dart';
 ## use
 
 ```dart
-  void _pickImage() async {
+void _pickImage() async {
     List<AssetEntity> imgList = await PhotoPicker.pickImage(
-      context: context, // BuildContext requied
+      context: context,
+      // BuildContext requied
 
       /// The following are optional parameters.
-      themeColor: Colors.green, // the title color and bottom color
-      padding: 1.0, // item padding
-      dividerColor: Colors.deepOrange, // divider color
-      disableColor: Colors.grey.shade300, // the check box disable color
-      itemRadio: 0.88, // the content item radio
-      maxSelected: 8, // max picker image count
-      provider: I18nProvider.chinese, // i18n provider ,default is chinese. , you can custom I18nProvider or use ENProvider()
-      rowCount: 5,  // item row count
-      textColor: Colors.white, // text color
-      thumbSize: 150, // preview thumb size , default is 64
-      sortDelegate: SortDelegate.common, // default is common ,or you make custom delegate to sort your gallery
-      checkBoxBuilderDelegate: DefaultCheckBoxBuilderDelegate(), // default is DefaultCheckBoxBuilderDelegate ,or you make custom delegate to create checkbox
+      themeColor: Colors.green,
+      // the title color and bottom color
+      padding: 1.0,
+      // item padding
+      dividerColor: Colors.grey,
+      // divider color
+      disableColor: Colors.grey.shade300,
+      // the check box disable color
+      itemRadio: 0.88,
+      // the content item radio
+      maxSelected: 8,
+      // max picker image count
+      provider: I18nProvider.chinese,
+      // i18n provider ,default is chinese. , you can custom I18nProvider or use ENProvider()
+      rowCount: 5,
+      // item row count
+      textColor: Colors.white,
+      // text color
+      thumbSize: 150,
+      // preview thumb size , default is 64
+      sortDelegate: SortDelegate.common,
+      // default is common ,or you make custom delegate to sort your gallery
+      checkBoxBuilderDelegate: DefaultCheckBoxBuilderDelegate(
+        activeColor: Colors.white,
+        unselectedColor: Colors.white,
+      ), // default is DefaultCheckBoxBuilderDelegate ,or you make custom delegate to create checkbox
+
+      loadingDelegate:
+          this, // if you want to build custom loading widget,extends LoadingDelegate [see example/lib/main.dart]
     );
 
-    if (imgList == null) {
-      currentSelected = "not select item";
-    } else {
-      List<String> r = [];
-      for (var e in imgList) {
-        var file = await e.file;
-        r.add(file.absolute.path);
-      }
-      currentSelected = r.join("\n\n");
-    }
-    setState(() {});
-  }
 ```
 
 ## whole example

example/lib/main.dart

@@ -61,10 +61,10 @@ class _MyHomePageState extends State<MyHomePage> with LoadingDelegate {
       checkBoxBuilderDelegate: DefaultCheckBoxBuilderDelegate(
         activeColor: Colors.white,
         unselectedColor: Colors.white,
-      ),
-      // default is D
+      ), // default is DefaultCheckBoxBuilderDelegate ,or you make custom delegate to create checkbox
+
       loadingDelegate:
-          this, // efaultCheckBoxBuilderDelegate ,or you make custom delegate to create checkbox
+          this, // if you want to build custom loading widget,extends LoadingDelegate, [see example/lib/main.dart]
     );
 
     if (imgList == null) {