flutter bottom overflowed by 50 PIXELS

    image.png

    1. Widget build(BuildContext context) {
    2.     super.build(context);
    3.     return Scaffold(
    4.       backgroundColor: Colors.white,
    5.       appBar: createAppbarWithBack(context, '私钥导入'),
    6.       body: Column(
    7.         crossAxisAlignment: CrossAxisAlignment.start,
    8.         children: [
    9.           Container(
    10.             margin: EdgeInsets.only(left: 16, right: 16, top: 16),
    11.             padding: const EdgeInsets.all(5.0),
    12.             height: 100,
    13.             decoration: BoxDecoration(

    解决办法：

    1. Widget build(BuildContext context) {
    2.     super.build(context);
    3.     return Scaffold(
    4.       backgroundColor: Colors.white,
    5.       appBar: createAppbarWithBack(context, '私钥导入'),
    6.       //使用ScrollView包装一下，否则键盘弹出时会报错空间溢出
    7.       body: new SingleChildScrollView(
    8.         child: new ConstrainedBox(
    9.             constraints: new BoxConstraints(
    10.               minHeight: 120.0,
    11.             ),
    12.             child: new Column(
    13.               mainAxisSize: MainAxisSize.min,
    14.               crossAxisAlignment: CrossAxisAlignment.start,
    15.               mainAxisAlignment: MainAxisAlignment.spaceAround,
    16.               children: <Widget>[
    17.                 Container(
    18.                   margin: EdgeInsets.only(left: 16, right: 16, top: 16),
    19.                   padding: const EdgeInsets.all(5.0),
    20.                   height: 80,
    21.                   decoration: BoxDecoration(
    22.                       color: Color(0xfff5f5f5),
    23.                       borderRadius: BorderRadius.circular(6),
    24.                       border: Border.all(width: 1, color: Colors.grey)),
    25.                   child: TextField(
    26.                     textAlign: TextAlign.start,
    27.                     maxLines: 10,
    28.                     style: TextStyle(fontSize: 14, color: Colors.black),
    29.                     decoration: InputDecoration(
    30.                         contentPadding:
    31.                             EdgeInsets.symmetric(horizontal: 10, vertical: 8),
    32.                         hintText: '输入明文私钥或扫描二维码，请注意大小写',
    33.                         hintStyle: TextStyle(fontSize: 14, color: Colors.grey),
    34.                         border: InputBorder.none),
    35.                     controller: privateKeyController,
    36.                   ),
    37.                 ),
    38.                 createLabel('钱包名称'),
    39.                 createTextFieldWithPadding('请输入钱包名称', walletNameController),
    40.                 createLabel('钱包密码'),
    41.                 createTextFieldWithPadding('请输入密码，至少8位', passwordController),
    42.                 createTextFieldWithPadding('重复密码', ensurePasswordController),
    43.                 createLabel('提示信息'),
    44.                 createTextFieldWithPadding('密码提示信息(可不填)', remainInfoController),
    45.                 Padding(
    46.                   padding: EdgeInsets.symmetric(horizontal: 16),
    47.                   child: Column(
    48.                     crossAxisAlignment: CrossAxisAlignment.start,
    49.                     children: [
    50.                       Row(
    51.                         children: [
    52.                           GestureDetector(
    53.                               onTap: () {
    54.                                 setState(() {
    55.                                   selectedCheckbox = !selectedCheckbox;
    56.                                 });
    57.                               },
    58.                               child: Padding(
    59.                                 padding: const EdgeInsets.only(
    60.                                     left: 0, right: 8, top: 8, bottom: 8),
    61.                                 child: Image.asset(
    62.                                   selectedCheckbox
    63.                                       ? R.assetsImagesIcSelectNoPng
    64.                                       : R.assetsImagesIcSelectYesPng,
    65.                                   height: 16,
    66.                                   width: 16,
    67.                                 ),
    68.                               )),
    69.                           Text(
    70.                             '我熟知以下事项：',
    71.                             style: TextStyle(fontSize: 14, color: Colors.black),
    72.                           ),
    73.                         ],
    74.                       ),
    75.                       Row(
    76.                         children: [
    77.                           Text('        -我已仔细阅读并同意',
    78.                               style:
    79.                                   TextStyle(fontSize: 12, color: Colors.black)),
    80.                           Text('服务及隐私条款',
    81.                               style: TextStyle(
    82.                                   fontSize: 12, color: Colors.lightBlue)),
    83.                         ],
    84.                       ),
    85.                       Text('        -密码用于保护私钥和交易授权，强度非常重要',
    86.                           style: TextStyle(fontSize: 12, color: Colors.black)),
    87.                       Text('        -我们不会存储密码，也无法帮你找回，请务必牢记',
    88.                           style: TextStyle(fontSize: 12, color: Colors.black))
    89.                     ],
    90.                   ),
    91.                 ),
    92.                 SizedBox(height: 20),
    93.                 Container(
    94.                   margin: EdgeInsets.symmetric(horizontal: 16),
    95.                   child: createButton('导入钱包', () {
    96.                     importWallet();
    97.                   }),
    98.                 ),
    99.               ],
    100.             )),
    101.       ),
    102.       // body: Column(
    103.       //   crossAxisAlignment: CrossAxisAlignment.start,
    105.       // ),
    106.     );
    107.   }

    参考地址
    https://my.oschina.net/u/2364451/blog/4820525

    https://www.jianshu.com/p/dbb1d66961ae