1.修复页面无背景对像时报错问题

example/android/app/build.gradle

@@ -108,33 +108,33 @@ android {
 
 
     // 应用信息配置
-//    productFlavors {
-//        // 智夜生活
-//        zhiying {
-//            applicationId "cn.zhios.zhiying"
-//            versionCode 28
-//            dimension "app"
-//            versionName '1.2.28'
-//            // 签名信息
-//            signingConfig signingConfigs.zhiying
-//        }
-//    }
-//
-//    // 打包脚本
-//    android.applicationVariants.all { variant ->
-//        if (variant.buildType.name != "debug") {
-//            variant.getPackageApplicationProvider().get().outputDirectory = new File(project.rootDir.absolutePath + "/app/build/outputs/apk")
-//        }
-//
-//        variant.outputs.all { output ->
-//            def outputFile = output.outputFile
-//            if (outputFile != null && outputFile.name.endsWith('.apk')) {
-//                //这里修改apk文件名
-//                def fileName = "${variant.productFlavors[0].name}_${releaseTime()}01_&V${variant.productFlavors[0].versionCode}.apk"
-//                outputFileName = fileName
-//            }
-//        }
-//    }
+    productFlavors {
+        // 智夜生活
+        zhiying {
+            applicationId "cn.zhios.zhiying"
+            versionCode 28
+            dimension "app"
+            versionName '1.2.28'
+            // 签名信息
+            signingConfig signingConfigs.zhiying
+        }
+    }
+
+    // 打包脚本
+    android.applicationVariants.all { variant ->
+        if (variant.buildType.name != "debug") {
+            variant.getPackageApplicationProvider().get().outputDirectory = new File(project.rootDir.absolutePath + "/app/build/outputs/apk")
+        }
+
+        variant.outputs.all { output ->
+            def outputFile = output.outputFile
+            if (outputFile != null && outputFile.name.endsWith('.apk')) {
+                //这里修改apk文件名
+                def fileName = "${variant.productFlavors[0].name}_${releaseTime()}01_&V${variant.productFlavors[0].versionCode}.apk"
+                outputFileName = fileName
+            }
+        }
+    }
 
     configurations.all {
         resolutionStrategy.eachDependency { DependencyResolveDetails details ->

lib/pages/custom_page/custom_page.dart

@@ -411,8 +411,7 @@ class __CommonPageContainerState extends State<_CommonPageContainer> with Single
 
   ///监听页面滚动
   _listenScroller(double offset) {
-    print(offset.toString());
-    if (offset > 0) {
+    if (offset >= 0) {
       backgroundTopMargin = -offset;
       if (backgroundTopMargin > -500) {
         backgroundBloc.streamController.add("");

lib/pages/main_page/main_page.dart

@@ -218,7 +218,7 @@ class _MainPageContainerState extends State<_MainPageContainer> {
     if (_bloc.backgroundModel != null) {
       var headerBg = _bloc.backgroundModel.headerBg;
       return Container(
-        height: double.tryParse(_bloc?.backgroundModel?.headerBg?.height)?? 0,
+          height: double.tryParse(_bloc?.backgroundModel?.headerBg?.height)?? 0,
         decoration: BoxDecoration(
             gradient: LinearGradient(
                 begin: Alignment.topCenter,

lib/pages/main_page/main_page_bloc.dart

@@ -38,7 +38,13 @@ class MainPageBloc extends BlocBase {
     _pageData = list.map((item) {
       return Map<String, dynamic>.from(item);
     }).toList();
-    backgroundModel=BackgroundModel.fromJson(Con.json.decode(json['out_data']));
+    try{
+      backgroundModel=BackgroundModel.fromJson(Con.json.decode(json['out_data']));
+    }catch(e,s){
+      print(e);
+      print(s);
+    }
+
     _mainController.add(_pageData);
   }
 }