Flutter - selectable text color

-

 return MaterialApp(

  theme: ThemeData.dark().copyWith(

    textSelectionColor: [Color], 

Comments

Post a Comment

Popular posts from this blog

Go - connect remote SQL server

-
refer from: https://studygolang.com/articles/19117   package sqlsvr import (     "fmt"     "database/sql"     "strings"     "wms.api/model"     _ "github.com/denisenkom/go-mssqldb"     _ "github.com/mattn/go-adodb" ) type Mssql struct {     *sql.DB     dataSource string     database   string     windows     bool     sa         SA } type SA struct {     user   string     passwd string } func (m *Mssql) Open() (err error ) {     var conf [] string     conf = append(conf, "Provider=SQLOLEDB" )     conf = append(conf, "Data Source=" +m.dataSource)     if m.windows {         // Integrated Security=SSPI :以当前WINDOWS系统用户身去登录SQL SERVER服务器(需要在安装sqlserver时候设置)，         // 如果SQL SERVER服务器不支持这种方式登录时，就会出错。         conf = ...
Read more

Dart - CRUD file in path

-
20201004 import 'dart:io' ; import 'package:flutter/material.dart' ; import 'package:path_provider/path_provider.dart' ; void main () async { WidgetsFlutterBinding. ensureInitialized () ; await getApplicationDocumentsDirectory().then((Directory dir) { File file = File ( ' ${dir. path } /text.txt' ) ; file.writeAsString( '123' ) ; void read() async { String contents = await file.readAsString() ; print(contents) ; } read() ; }) ; }   [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: FileSystemException: Cannot open file, path = '//test.txt' (OS Error: Read-only file system, errno = 30) FileSystemException: Cannot open file OS Error: Is a directory reading-writing-files
Read more