add login

lib/base/common_dialog.dart

@@ -0,0 +1,196 @@
+
+import 'dart:async';
+
+import 'package:back_button_interceptor/back_button_interceptor.dart';
+import 'package:flutter/material.dart';
+
+/// @author newtab on 2021/7/16
+///常用loading,fail,success对话框
+class CommonDialog extends StatelessWidget {
+  final String? text;
+  final CommonDialogState? commonDialogState;
+
+  const CommonDialog({Key? key, this.text, this.commonDialogState}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    Widget result = Material(
+      color: Colors.transparent,
+      child: Align(
+        alignment: Alignment.center,
+        child: Container(
+          decoration: BoxDecoration(color: Color.fromRGBO(17, 17, 17, 0.7), borderRadius: BorderRadius.circular(5)),
+          constraints: BoxConstraints(
+            maxWidth: MediaQuery.of(context).size.width / 2,
+            minWidth: 122,
+          ),
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              Container(
+                margin: EdgeInsets.only(top: 15.0),
+                constraints: BoxConstraints(
+                  minHeight: 40,
+                ),
+                child: IconTheme(
+                    data: IconThemeData(
+                      color: Colors.white,
+                      size: 40.0,
+                    ),
+                    child: LoadingIcon()),
+              ),
+              SizedBox(
+                height: 15,
+              ),
+              if (text != null)
+                Padding(
+                  padding: EdgeInsets.only(
+                    left: 15,
+                    right: 15,
+                    bottom: 15,
+                  ),
+                  child: DefaultTextStyle(
+                    textAlign: TextAlign.center,
+                    maxLines: 2,
+                    overflow: TextOverflow.ellipsis,
+                    style: TextStyle(color: Colors.white, fontSize: 14),
+                    child: Text(text!),
+                  ),
+                ),
+            ],
+          ),
+        ),
+      ),
+    );
+
+    return result;
+  }
+}
+
+class LoadingIcon extends StatefulWidget {
+  final double size;
+
+  LoadingIcon({this.size = 50.0});
+
+  @override
+  State<StatefulWidget> createState() => LoadingIconState();
+}
+
+class LoadingIconState extends State<LoadingIcon> with SingleTickerProviderStateMixin {
+  AnimationController? _controller;
+  Animation<double>? _doubleAnimation;
+
+  @override
+  void initState() {
+    super.initState();
+    _controller = new AnimationController(vsync: this, duration: Duration(milliseconds: 1000))..repeat();
+    _doubleAnimation = Tween(begin: 0.0, end: 360.0).animate(_controller!)
+      ..addListener(() {
+        setState(() {});
+      });
+  }
+
+  @override
+  void dispose() {
+    _controller?.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Transform.rotate(
+        angle: _doubleAnimation!.value ~/ 30 * 30.0 * 0.0174533, child: Image.asset("assets/images/loading.png", width: widget.size, height: widget.size));
+  }
+}
+
+enum CommonDialogState {
+  LOADING,
+  SUCCESS,
+  FAILED,
+}
+
+typedef HideCallback = Future Function();
+
+int backButtonIndex = 2;
+
+HideCallback showCommonDialog(
+    BuildContext context, {
+      String? text,
+      bool backButtonClose = false,
+      CommonDialogState commonDialogState = CommonDialogState.LOADING,
+    }) {
+  Completer<VoidCallback> result = Completer<VoidCallback>();
+  var backButtonName = 'QL_Toast$backButtonIndex';
+  BackButtonInterceptor.add((stopDefaultButtonEvent, _) {
+    if (backButtonClose) {
+      result.future.then((hide) {
+        hide();
+      });
+    }
+    return true;
+  }, zIndex: backButtonIndex, name: backButtonName);
+  backButtonIndex++;
+
+  var overlay = OverlayEntry(
+    maintainState: true,
+    builder: (_) => WillPopScope(
+      onWillPop: () async {
+        var hide = await result.future;
+        hide();
+        return false;
+      },
+      child: CommonDialog(
+        text: text,
+      ),
+    ),
+  );
+  result.complete(() {
+    overlay.remove();
+    BackButtonInterceptor.removeByName(backButtonName);
+  });
+  Overlay.of(context)?.insert(overlay);
+
+  return () async {
+    var hide = await result.future;
+    hide();
+  };
+}
+
+Future successDialog(BuildContext context, String text) {
+  HideCallback hideCallback = showCommonDialog(
+    context,
+    text: text,
+    commonDialogState: CommonDialogState.SUCCESS,
+    backButtonClose: true,
+  );
+  return Future.delayed(
+      Duration(
+        milliseconds: 1000,
+      ), () {
+    hideCallback();
+  });
+}
+
+Future failDialog(BuildContext context, String text) {
+  HideCallback hideCallback = showCommonDialog(
+    context,
+    text: text,
+    commonDialogState: CommonDialogState.FAILED,
+    backButtonClose: true,
+  );
+  return Future.delayed(
+      Duration(
+        milliseconds: 1000,
+      ), () {
+    hideCallback();
+  });
+}
+
+HideCallback loadingDialog(BuildContext context, {String? text}) {
+  return showCommonDialog(
+    context,
+    text: text,
+    commonDialogState: CommonDialogState.LOADING,
+    backButtonClose: true,
+  );
+}