小编kon*_*541的帖子

如何在SingleChildScrollView中使用Expanded？我有Image.network，ListView.builder和Row（TextFormField和Icon按钮）的屏幕。我用Expanded包装ListView。如何用SingleChildScrollView包装此列？打开滑水板时，我需要移动屏幕才能看到我写的东西。当我包装我的专栏时，我有此错误。

      body: SingleChildScrollView(
        child: Column(
          children: <Widget>[
            Container(
              child: GestureDetector(
                child:
                Image.network(
                  postOne.imageUrl,
                  fit: BoxFit.fitWidth,
                  height: MediaQuery
                      .of(context)
                      .size
                      .width,
                  width: MediaQuery
                      .of(context)
                      .size
                      .width,
                ),
                onLongPress: () {},
                onDoubleTap: () {},
              ),
            ),
            Expanded(
              //height: MediaQuery.of(context).size.width*0.33,
              child: ListView.builder(
                  itemCount: commentList.length,
                  itemBuilder: (context, position) {
                    return GestureDetector(
                        onLongPress: () {},
                        child: Card(
                          child: Padding(
                            padding: EdgeInsets.all(5.0),
                            child: new CheckboxListTile(
                                title: new Text(commentList
                                    .elementAt(position)
                                    .coment,
                                  style: TextStyle(fontSize: 18.0),),
                                value: values[commentList
                                    .elementAt(position)
                                    .coment],
                                onChanged: (bool value) {}),
                          ),
                        )
                    );
                  }
              ), …

如何使两个按钮在导航抽屉的整个宽度上均匀扩展？

问题是我将“pod \'Firebase\'”添加到 Podfile 并尝试运行我的应用程序。我添加了 GoogleService-Info.plist 并尝试将我的应用程序添加到 firebase。如何修复它？

Xcode\'s output:\n\xe2\x86\xb3\n    In file included from\n/AndroidStudioProjects/wts101/ios/Pods/GoogleDataTransportCCTSupport/GoogleDataTransportCCTSupport/GDTCCTLibrary/GDTCCTUploader.m:17:\n    //AndroidStudioProjects/wts101/ios/Pods/GoogleDataTransportCCTSupport/GoogleDataTransportCCTSupport/GDTCCTLibrary/Private/GDTCCTUploader.h:19:9: fatal error: \'GoogleDataTransport/GDTUploader.h\' file not found\n    #import <GoogleDataTransport/GDTUploader.h>\n            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n    1 error generated.\n    In file included from //AndroidStudioProjects/wts101/ios/Pods/GoogleDataTransportCCTSupport/GoogleDataTransportCCTSupport/GDTCCTLibrary/GDTCCTNanopbHelpers.m:17:\n    //AndroidStudioProjects/wts101/ios/Pods/GoogleDataTransportCCTSupport/GoogleDataTransportCCTSupport/GDTCCTLibrary/Private/GDTCCTNanopbHelpers.h:19:9: fatal error: \'GoogleDataTransport/GDTStoredEvent.h\' file not found\n    #import <GoogleDataTransport/GDTStoredEvent.h>\n            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n    1 error generated.\n    In file included from //AndroidStudioProjects/wts101/ios/Pods/GoogleDataTransportCCTSupport/GoogleDataTransportCCTSupport/GDTCCTLibrary/GDTCCTPrioritizer.m:17:\n    //AndroidStudioProjects/wts101/ios/Pods/GoogleDataTransportCCTSupport/GoogleDataTransportCCTSupport/GDTCCTLibrary/Private/GDTCCTPrioritizer.h:19:9: fatal error: \'GoogleDataTransport/GDTClock.h\' file not found\n    #import <GoogleDataTransport/GDTClock.h>\n            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n    1 error generated.\n    //AndroidStudioProjects/wts101/ios/Pods/FirebaseCoreDiagnostics/Firebase/CoreDiagnostics/FIRCDLibrary/FIRCoreDiagnostics.m:20:9: fatal error: \'GoogleDataTransport/GDTConsoleLogger.h\' file not found\n    #import <GoogleDataTransport/GDTConsoleLogger.h>\n            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n    1 error generated.\n    ld: framework not found …

我知道这不是最好的方法，但我真的做不到。如何制作这样的东西。我对几何很迷恋。我尝试用cubicTo 来做到这一点，但我没有得到这个效果：/。

有人能帮我吗。下面是我的代码的一部分。

var sw = size.width;
var sh = size.height;

var path = Path();

path.cubicTo(sw/2, 0, sw/4, 0, 2*sw/4, 2*sh/4);
path.cubicTo(2*sw/3, 2*sh/3, sw/3, 0, sw, 0);
path.cubicTo(0, 0, 0, 0, sw, 0);
path.lineTo(sw, sh);
path.lineTo(0, sh);
path.close();

我想使用可扩展的 - ExpandablePanel。问题是当第二个 ExpandablePanel 打开时如何关闭第一个 ExpandablePanel？我尝试使用controller.value，但找不到类似actions 或onChange 的东西。这个怎么做？

ExpandablePanel(
                controller: categoryController,
                iconPlacement: ExpandablePanelIconPlacement.right,
                header: Container(
                    margin: EdgeInsets.only(left: 40.0),
                    child: Text(
                      'Category',
                      style: TextStyle(
                          fontSize: 21.0, fontWeight: FontWeight.bold),
                      textAlign: TextAlign.center,
                    )),
                expanded: Container(
                  child: Icon(Icons.close)),
                tapHeaderToExpand: true,
                hasIcon: true,
              ),
ExpandablePanel(
                controller: subCategoryController,
                iconPlacement: ExpandablePanelIconPlacement.right,
                header: Container(
                    margin: EdgeInsets.only(left: 40.0),
                    child: Text(
                      'SubCategory',
                      style: TextStyle(
                          fontSize: 21.0, fontWeight: FontWeight.bold),
                      textAlign: TextAlign.center,
                    )),
                expanded: Container(
                  child: Icon(Icons.close)),
                tapHeaderToExpand: true,
                hasIcon: true,
              ),