导出的图片像素由设备像素决定

@@ -24,6 +24,7 @@ import '../../utils/share_helper.dart';
 import '../../widgets/h_empty_view.dart';
 import '../../widgets/h_empty_view.dart';
 import '../../widgets/loading.dart';
 import '../../widgets/loading.dart';
 import '../../widgets/round_button.dart';
 import '../../widgets/round_button.dart';
+import 'dart:ui' as ui;
 
 
 /**
 /**
  * 优惠券分享海报
  * 优惠券分享海报
@@ -74,12 +75,13 @@ class _CouponPosterPageState extends State<CouponPosterPage> {
   /// 截图
   /// 截图
   Future<Uint8List> _capturePng(
   Future<Uint8List> _capturePng(
     GlobalKey globalKey, {
     GlobalKey globalKey, {
-    double pixelRatio = 6.0, //截屏的图片与原图的比例
+    double pixelRatio = 2.0, //截屏的图片与原图的比例
   }) async {
   }) async {
     try {
     try {
       RenderRepaintBoundary boundary =
       RenderRepaintBoundary boundary =
           globalKey.currentContext?.findRenderObject() as RenderRepaintBoundary;
           globalKey.currentContext?.findRenderObject() as RenderRepaintBoundary;
-      var image = await boundary.toImage(pixelRatio: pixelRatio);
+      double dpr = ui.window.devicePixelRatio; // 获取当前设备的像素比
+      var image = await boundary.toImage(pixelRatio: dpr);
       ByteData byteData = await image.toByteData(format: ImageByteFormat.png);
       ByteData byteData = await image.toByteData(format: ImageByteFormat.png);
       Uint8List pngBytes = byteData?.buffer.asUint8List();
       Uint8List pngBytes = byteData?.buffer.asUint8List();
       return pngBytes;
       return pngBytes;

@@ -2099,7 +2099,7 @@ class NotebookDetailPageState extends State<NotebookDetailPage> {
                         ),
                         ),
                         child: Text(
                         child: Text(
                           data.content,
                           data.content,
-                          overflow: TextOverflow.ellipsis,
+                          // overflow: TextOverflow.ellipsis,
                           style: TextStyle(
                           style: TextStyle(
                               height: 2,
                               height: 2,
                               color: MyColours.color_515151,
                               color: MyColours.color_515151,

@@ -34,7 +34,7 @@ class RowMultiText extends StatelessWidget {
           Align(
           Align(
             alignment: Alignment.centerLeft,
             alignment: Alignment.centerLeft,
             child: Text(
             child: Text(
-              title,
+              title ?? '',
               style:
               style:
                   TextStyle(color: textColor, fontSize: ScreenUtil().setSp(30)),
                   TextStyle(color: textColor, fontSize: ScreenUtil().setSp(30)),
             ),
             ),
@@ -46,19 +46,30 @@ class RowMultiText extends StatelessWidget {
                 child: Row(
                 child: Row(
                   mainAxisAlignment: MainAxisAlignment.end,
                   mainAxisAlignment: MainAxisAlignment.end,
                   children: [
                   children: [
-                    if (imageName != null && content.length > 0)
+                    if (imageName != null &&
+                        content.length > 0 &&
+                        content != null)
                       Container(
                       Container(
                           margin: EdgeInsets.only(right: w(2)),
                           margin: EdgeInsets.only(right: w(2)),
                           child: Image.asset(
                           child: Image.asset(
                             Utils.getImgPath(imageName),
                             Utils.getImgPath(imageName),
                             width: w(20),
                             width: w(20),
                           )),
                           )),
-                    Text(content,
-                        style: TextStyle(
-                            color: textColorR,
-                            fontSize: ScreenUtil().setSp(30)),
-                        softWrap: true,
-                        textAlign: this.textAlign),
+                    imageName == null
+                        ? Expanded(
+                            child: Text(content ?? '',
+                                style: TextStyle(
+                                    color: textColorR,
+                                    fontSize: ScreenUtil().setSp(30)),
+                                softWrap: true,
+                                textAlign: this.textAlign))
+                        : Text(content??'',
+                            overflow: TextOverflow.ellipsis,
+                            style: TextStyle(
+                                color: textColorR,
+                                fontSize: ScreenUtil().setSp(30)),
+                            softWrap: true,
+                            textAlign: this.textAlign),
                   ],
                   ],
                 )),
                 )),
           )
           )