v1.0.1

lib/app/controller/base_controller.dart

@@ -0,0 +1,148 @@
+import 'dart:async';
+
+import 'package:easy_refresh/easy_refresh.dart';
+import 'package:flutter/widgets.dart';
+import 'package:flutter_dmzj/app/log.dart';
+
+import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
+import 'package:get/get.dart';
+
+class BaseController extends GetxController {
+  /// 加载中，更新页面
+  var pageLoadding = false.obs;
+
+  /// 加载中,不会更新页面
+  var loadding = false;
+
+  /// 空白页面
+  var pageEmpty = false.obs;
+
+  /// 页面错误
+  var pageError = false.obs;
+
+  /// 未登录
+  var notLogin = false.obs;
+
+  /// 错误信息
+  var errorMsg = "".obs;
+
+  Error? error;
+
+  /// 显示错误
+  /// * [msg] 错误信息
+  /// * [showPageError] 显示页面错误
+  /// * 只在第一页加载错误时showPageError=true，后续页加载错误时使用Toast弹出通知
+  void handleError(Object exception, {bool showPageError = false}) {
+    Log.logPrint(exception);
+    var msg = exceptionToString(exception);
+    if (exception is Error) {
+      error = exception;
+    }
+    if (showPageError) {
+      pageError.value = true;
+      errorMsg.value = msg;
+    } else {
+      SmartDialog.showToast(exceptionToString(msg));
+    }
+  }
+
+  String exceptionToString(Object exception) {
+    return exception.toString().replaceAll("Exception:", "");
+  }
+
+  void onLogin() {}
+  void onLogout() {}
+}
+
+class BaseDataController<T> extends BaseController {
+  T? data;
+  Future loadData() async {
+    try {
+      if (loadding) return;
+      loadding = true;
+      pageError.value = false;
+      pageLoadding.value = true;
+      error = null;
+      var result = await getData();
+      data = result;
+    } catch (e) {
+      handleError(exceptionToString(e), showPageError: true);
+    } finally {
+      loadding = false;
+      pageLoadding.value = false;
+    }
+  }
+
+  Future<T?> getData() async {
+    return null;
+  }
+}
+
+class BasePageController<T> extends BaseController {
+  final ScrollController scrollController = ScrollController();
+  final EasyRefreshController easyRefreshController = EasyRefreshController();
+  int currentPage = 1;
+  int count = 0;
+  int maxPage = 0;
+  int pageSize = 24;
+  var canLoadMore = false.obs;
+  var list = <T>[].obs;
+
+  Future refreshData() async {
+    currentPage = 1;
+    list.clear();
+    await loadData();
+  }
+
+  Future loadData() async {
+    try {
+      if (loadding) return;
+      loadding = true;
+      pageError.value = false;
+      pageEmpty.value = false;
+      notLogin.value = false;
+      error = null;
+      pageLoadding.value = currentPage == 1;
+
+      var result = await getData(currentPage, pageSize);
+      //是否可以加载更多
+      if (result.isNotEmpty) {
+        currentPage++;
+        canLoadMore.value = true;
+        pageEmpty.value = false;
+      } else {
+        canLoadMore.value = false;
+        if (currentPage == 1) {
+          pageEmpty.value = true;
+        }
+      }
+      // 赋值数据
+      if (currentPage == 1) {
+        list.value = result;
+      } else {
+        list.addAll(result);
+      }
+    } catch (e) {
+      handleError(e, showPageError: currentPage == 1);
+    } finally {
+      loadding = false;
+      pageLoadding.value = false;
+    }
+  }
+
+  Future<List<T>> getData(int page, int pageSize) async {
+    return [];
+  }
+
+  void scrollToTopOrRefresh() {
+    if (scrollController.offset > 0) {
+      scrollController.animateTo(
+        0,
+        duration: const Duration(milliseconds: 200),
+        curve: Curves.linear,
+      );
+    } else {
+      easyRefreshController.callRefresh();
+    }
+  }
+}