diff --git a/sql_db/.gitignore b/sql_db/.gitignore new file mode 100644 index 0000000..0fa6b67 --- /dev/null +++ b/sql_db/.gitignore @@ -0,0 +1,46 @@ +# Miscellaneous +*.class +*.log +*.pyc +*.swp +.DS_Store +.atom/ +.buildlog/ +.history +.svn/ + +# IntelliJ related +*.iml +*.ipr +*.iws +.idea/ + +# The .vscode folder contains launch configuration and tasks you configure in +# VS Code which you may wish to be included in version control, so this line +# is commented out by default. +#.vscode/ + +# Flutter/Dart/Pub related +**/doc/api/ +**/ios/Flutter/.last_build_id +.dart_tool/ +.flutter-plugins +.flutter-plugins-dependencies +.packages +.pub-cache/ +.pub/ +/build/ + +# Web related +lib/generated_plugin_registrant.dart + +# Symbolication related +app.*.symbols + +# Obfuscation related +app.*.map.json + +# Android Studio will place build artifacts here +/android/app/debug +/android/app/profile +/android/app/release diff --git a/sql_db/.metadata b/sql_db/.metadata new file mode 100644 index 0000000..cfd20c1 --- /dev/null +++ b/sql_db/.metadata @@ -0,0 +1,10 @@ +# This file tracks properties of this Flutter project. +# Used by Flutter tool to assess capabilities and perform upgrades etc. +# +# This file should be version controlled and should not be manually edited. + +version: + revision: 8328b56ef37c511097545f24a054b6abe7631b0b + channel: master + +project_type: app diff --git a/sql_db/README.md b/sql_db/README.md new file mode 100644 index 0000000..0c3a34d --- /dev/null +++ b/sql_db/README.md @@ -0,0 +1,113 @@ +# sql_db + +flutter에서 sqldb 사용법을 배운다. +예제는 구글링에서 찾은 [블로그](https://suragch.medium.com/simple-sqflite-database-example-in-flutter-e56a5aaa3f91)를 기본으로 한다. + +## 의존성 +sqflite와 path_provider가 필요하다. +sql이 아니고 sqf이다. 파일db라서 그런것인가?? +path_provider는 문서 디렉토리를 찾기 위해 사용된다. +``` +sqflite: ^1.2.0 +path_provider: ^1.5.1 +``` + +## 데이터베이스 헬퍼 클래스 +우선 눈에 띄는 부분이 싱클톤 객체로 만드는 부분이다. +코드와 주석은 이해가 되는데, _privateConstructor();이게 공식적인 문법인지 애매하다. +구글링을 해봐도 명확하게 나오지는 않는데, 코드 실행상 이상이 없으니 맞겠죠?? +``` + // make this a singleton class + DatabaseHelper._privateConstructor(); + static final DatabaseHelper instance = DatabaseHelper._privateConstructor(); +``` + +실제 instance부분은 싱글톤 객체로 유일한 데이터접근 경로인것이고, +실제 데이터베이스 객체는 아래와 같이 선언되어 있다. + +역시 static으로 선언되어 있고, get을 할때 최초 한번 초기화를 수행한다. +초기화에는 데이터베이스 생성을 위한 ddl도 포함되어 있다. +테이블 구조는 목적에 맞게 정의하되, app이기때문에 너무 복잡한 구조는 피하게 좋을듯 하다. +``` + // only have a single app-wide reference to the database + static Database _database; + Future get database async { + if (_database != null) return _database; + // lazily instantiate the db the first time it is accessed + _database = await _initDatabase(); + return _database; + } + + // this opens the database (and creates it if it doesn't exist) + _initDatabase() async { + Directory documentsDirectory = await getApplicationDocumentsDirectory(); + String path = join(documentsDirectory.path, _databaseName); + return await openDatabase(path, + version: _databaseVersion, onCreate: _onCreate); + } + + // SQL code to create the database table + Future _onCreate(Database db, int version) async { + await db.execute(''' + CREATE TABLE $table ( + $columnId INTEGER PRIMARY KEY, + $columnName TEXT NOT NULL, + $columnAge INTEGER NOT NULL + ) + '''); + } +``` + +## 데이터베이스 CRUD +실제 sql과는 조금 다르다. +orm같은 느낌이 더 강하다. +간단한 코드저장/select 용도이기 때문에 크게 문제가 없을것 같다. +실제 SQL도 되는것 같지만, 코드 샘플상 sql보다는 프로그램코드를 권장하는 느낌이다. +(당연히 app개발 영역이니 복잡한 sql보다 심플한 코드가 선호되는게 맞다고 본다.) +``` + // All of the rows are returned as a list of maps, where each map is + // a key-value list of columns. + Future>> queryAllRows() async { + Database db = await instance.database; + return await db.query(table); + } + + // All of the methods (insert, query, update, delete) can also be done using + // raw SQL commands. This method uses a raw query to give the row count. + Future queryRowCount() async { + Database db = await instance.database; + return Sqflite.firstIntValue( + await db.rawQuery('SELECT COUNT(*) FROM $table')); + } + + // We are assuming here that the id column in the map is set. The other + // column values will be used to update the row. + Future update(Map row) async { + Database db = await instance.database; + int id = row[columnId]; + return await db.update(table, row, where: '$columnId = ?', whereArgs: [id]); + } +``` + + +## 데이터 베이스 사용 +싱글턴객체를 통해서 일단 데이터베이스 객체를 구한다. +그리고, 선언된 crud 메소드를 통해 실제 database객체로 접근하도록 가이드 되고 있다. +``` + // reference to our single class that manages the database + final dbHelper = DatabaseHelper.instance; + +... +... + + void _insert() async { + // row to insert + Map row = { + DatabaseHelper.columnName: 'Bob', + DatabaseHelper.columnAge: 23 + }; + final id = await dbHelper.insert(row); + print('inserted row id: $id'); + } + +``` diff --git a/sql_db/android/.gitignore b/sql_db/android/.gitignore new file mode 100644 index 0000000..0a741cb --- /dev/null +++ b/sql_db/android/.gitignore @@ -0,0 +1,11 @@ +gradle-wrapper.jar +/.gradle +/captures/ +/gradlew +/gradlew.bat +/local.properties +GeneratedPluginRegistrant.java + +# Remember to never publicly share your keystore. +# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app +key.properties diff --git a/sql_db/android/app/build.gradle b/sql_db/android/app/build.gradle new file mode 100644 index 0000000..e05c35b --- /dev/null +++ b/sql_db/android/app/build.gradle @@ -0,0 +1,63 @@ +def localProperties = new Properties() +def localPropertiesFile = rootProject.file('local.properties') +if (localPropertiesFile.exists()) { + localPropertiesFile.withReader('UTF-8') { reader -> + localProperties.load(reader) + } +} + +def flutterRoot = localProperties.getProperty('flutter.sdk') +if (flutterRoot == null) { + throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.") +} + +def flutterVersionCode = localProperties.getProperty('flutter.versionCode') +if (flutterVersionCode == null) { + flutterVersionCode = '1' +} + +def flutterVersionName = localProperties.getProperty('flutter.versionName') +if (flutterVersionName == null) { + flutterVersionName = '1.0' +} + +apply plugin: 'com.android.application' +apply plugin: 'kotlin-android' +apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle" + +android { + compileSdkVersion 29 + + sourceSets { + main.java.srcDirs += 'src/main/kotlin' + } + + lintOptions { + disable 'InvalidPackage' + } + + defaultConfig { + // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html). + applicationId "com.example.sql_db" + minSdkVersion 16 + targetSdkVersion 29 + versionCode flutterVersionCode.toInteger() + versionName flutterVersionName + } + + buildTypes { + release { + // TODO: Add your own signing config for the release build. + // Signing with the debug keys for now, so `flutter run --release` works. + signingConfig signingConfigs.debug + } + } +} + +flutter { + source '../..' +} + +dependencies { + implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" +} diff --git a/sql_db/android/app/src/debug/AndroidManifest.xml b/sql_db/android/app/src/debug/AndroidManifest.xml new file mode 100644 index 0000000..978f9ad --- /dev/null +++ b/sql_db/android/app/src/debug/AndroidManifest.xml @@ -0,0 +1,7 @@ + + + + diff --git a/sql_db/android/app/src/main/AndroidManifest.xml b/sql_db/android/app/src/main/AndroidManifest.xml new file mode 100644 index 0000000..3299e91 --- /dev/null +++ b/sql_db/android/app/src/main/AndroidManifest.xml @@ -0,0 +1,41 @@ + + + + + + + + + + + + + + + + diff --git a/sql_db/android/app/src/main/kotlin/com/example/sql_db/MainActivity.kt b/sql_db/android/app/src/main/kotlin/com/example/sql_db/MainActivity.kt new file mode 100644 index 0000000..dbdc8d2 --- /dev/null +++ b/sql_db/android/app/src/main/kotlin/com/example/sql_db/MainActivity.kt @@ -0,0 +1,6 @@ +package com.example.sql_db + +import io.flutter.embedding.android.FlutterActivity + +class MainActivity: FlutterActivity() { +} diff --git a/sql_db/android/app/src/main/res/drawable/launch_background.xml b/sql_db/android/app/src/main/res/drawable/launch_background.xml new file mode 100644 index 0000000..f74085f --- /dev/null +++ b/sql_db/android/app/src/main/res/drawable/launch_background.xml @@ -0,0 +1,12 @@ + + + + + + + + diff --git a/sql_db/android/app/src/main/res/mipmap-hdpi/ic_launcher.png b/sql_db/android/app/src/main/res/mipmap-hdpi/ic_launcher.png new file mode 100644 index 0000000..db77bb4 Binary files /dev/null and b/sql_db/android/app/src/main/res/mipmap-hdpi/ic_launcher.png differ diff --git a/sql_db/android/app/src/main/res/mipmap-mdpi/ic_launcher.png b/sql_db/android/app/src/main/res/mipmap-mdpi/ic_launcher.png new file mode 100644 index 0000000..17987b7 Binary files /dev/null and b/sql_db/android/app/src/main/res/mipmap-mdpi/ic_launcher.png differ diff --git a/sql_db/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/sql_db/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png new file mode 100644 index 0000000..09d4391 Binary files /dev/null and b/sql_db/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ diff --git a/sql_db/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/sql_db/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png new file mode 100644 index 0000000..d5f1c8d Binary files /dev/null and b/sql_db/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ diff --git a/sql_db/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/sql_db/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png new file mode 100644 index 0000000..4d6372e Binary files /dev/null and b/sql_db/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ diff --git a/sql_db/android/app/src/main/res/values-night/styles.xml b/sql_db/android/app/src/main/res/values-night/styles.xml new file mode 100644 index 0000000..449a9f9 --- /dev/null +++ b/sql_db/android/app/src/main/res/values-night/styles.xml @@ -0,0 +1,18 @@ + + + + + + + diff --git a/sql_db/android/app/src/main/res/values/styles.xml b/sql_db/android/app/src/main/res/values/styles.xml new file mode 100644 index 0000000..d74aa35 --- /dev/null +++ b/sql_db/android/app/src/main/res/values/styles.xml @@ -0,0 +1,18 @@ + + + + + + + diff --git a/sql_db/android/app/src/profile/AndroidManifest.xml b/sql_db/android/app/src/profile/AndroidManifest.xml new file mode 100644 index 0000000..978f9ad --- /dev/null +++ b/sql_db/android/app/src/profile/AndroidManifest.xml @@ -0,0 +1,7 @@ + + + + diff --git a/sql_db/android/build.gradle b/sql_db/android/build.gradle new file mode 100644 index 0000000..3100ad2 --- /dev/null +++ b/sql_db/android/build.gradle @@ -0,0 +1,31 @@ +buildscript { + ext.kotlin_version = '1.3.50' + repositories { + google() + jcenter() + } + + dependencies { + classpath 'com.android.tools.build:gradle:3.5.0' + classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" + } +} + +allprojects { + repositories { + google() + jcenter() + } +} + +rootProject.buildDir = '../build' +subprojects { + project.buildDir = "${rootProject.buildDir}/${project.name}" +} +subprojects { + project.evaluationDependsOn(':app') +} + +task clean(type: Delete) { + delete rootProject.buildDir +} diff --git a/sql_db/android/gradle.properties b/sql_db/android/gradle.properties new file mode 100644 index 0000000..a673820 --- /dev/null +++ b/sql_db/android/gradle.properties @@ -0,0 +1,4 @@ +org.gradle.jvmargs=-Xmx1536M +android.useAndroidX=true +android.enableJetifier=true +android.enableR8=true diff --git a/sql_db/android/gradle/wrapper/gradle-wrapper.properties b/sql_db/android/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..296b146 --- /dev/null +++ b/sql_db/android/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,6 @@ +#Fri Jun 23 08:50:38 CEST 2017 +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-all.zip diff --git a/sql_db/android/settings.gradle b/sql_db/android/settings.gradle new file mode 100644 index 0000000..44e62bc --- /dev/null +++ b/sql_db/android/settings.gradle @@ -0,0 +1,11 @@ +include ':app' + +def localPropertiesFile = new File(rootProject.projectDir, "local.properties") +def properties = new Properties() + +assert localPropertiesFile.exists() +localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) } + +def flutterSdkPath = properties.getProperty("flutter.sdk") +assert flutterSdkPath != null, "flutter.sdk not set in local.properties" +apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle" diff --git a/sql_db/ios/.gitignore b/sql_db/ios/.gitignore new file mode 100644 index 0000000..e96ef60 --- /dev/null +++ b/sql_db/ios/.gitignore @@ -0,0 +1,32 @@ +*.mode1v3 +*.mode2v3 +*.moved-aside +*.pbxuser +*.perspectivev3 +**/*sync/ +.sconsign.dblite +.tags* +**/.vagrant/ +**/DerivedData/ +Icon? +**/Pods/ +**/.symlinks/ +profile +xcuserdata +**/.generated/ +Flutter/App.framework +Flutter/Flutter.framework +Flutter/Flutter.podspec +Flutter/Generated.xcconfig +Flutter/app.flx +Flutter/app.zip +Flutter/flutter_assets/ +Flutter/flutter_export_environment.sh +ServiceDefinitions.json +Runner/GeneratedPluginRegistrant.* + +# Exceptions to above rules. +!default.mode1v3 +!default.mode2v3 +!default.pbxuser +!default.perspectivev3 diff --git a/sql_db/ios/Flutter/AppFrameworkInfo.plist b/sql_db/ios/Flutter/AppFrameworkInfo.plist new file mode 100644 index 0000000..6b4c0f7 --- /dev/null +++ b/sql_db/ios/Flutter/AppFrameworkInfo.plist @@ -0,0 +1,26 @@ + + + + + CFBundleDevelopmentRegion + $(DEVELOPMENT_LANGUAGE) + CFBundleExecutable + App + CFBundleIdentifier + io.flutter.flutter.app + CFBundleInfoDictionaryVersion + 6.0 + CFBundleName + App + CFBundlePackageType + FMWK + CFBundleShortVersionString + 1.0 + CFBundleSignature + ???? + CFBundleVersion + 1.0 + MinimumOSVersion + 8.0 + + diff --git a/sql_db/ios/Flutter/Debug.xcconfig b/sql_db/ios/Flutter/Debug.xcconfig new file mode 100644 index 0000000..592ceee --- /dev/null +++ b/sql_db/ios/Flutter/Debug.xcconfig @@ -0,0 +1 @@ +#include "Generated.xcconfig" diff --git a/sql_db/ios/Flutter/Release.xcconfig b/sql_db/ios/Flutter/Release.xcconfig new file mode 100644 index 0000000..592ceee --- /dev/null +++ b/sql_db/ios/Flutter/Release.xcconfig @@ -0,0 +1 @@ +#include "Generated.xcconfig" diff --git a/sql_db/ios/Runner.xcodeproj/project.pbxproj b/sql_db/ios/Runner.xcodeproj/project.pbxproj new file mode 100644 index 0000000..19cf9dc --- /dev/null +++ b/sql_db/ios/Runner.xcodeproj/project.pbxproj @@ -0,0 +1,495 @@ +// 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b/sql_db/ios/Runner.xcworkspace/contents.xcworkspacedata @@ -0,0 +1,7 @@ + + + + + diff --git a/sql_db/ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist b/sql_db/ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist new file mode 100644 index 0000000..18d9810 --- /dev/null +++ b/sql_db/ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist @@ -0,0 +1,8 @@ + + + + + IDEDidComputeMac32BitWarning + + + diff --git a/sql_db/ios/Runner.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings b/sql_db/ios/Runner.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings new file mode 100644 index 0000000..f9b0d7c --- /dev/null +++ b/sql_db/ios/Runner.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings @@ -0,0 +1,8 @@ + + + + + PreviewsEnabled + + + diff --git a/sql_db/ios/Runner/AppDelegate.swift b/sql_db/ios/Runner/AppDelegate.swift new file mode 100644 index 0000000..70693e4 --- /dev/null +++ b/sql_db/ios/Runner/AppDelegate.swift @@ -0,0 +1,13 @@ +import UIKit +import Flutter + +@UIApplicationMain +@objc class AppDelegate: FlutterAppDelegate { + override func application( + _ application: UIApplication, + didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? + ) -> Bool { + GeneratedPluginRegistrant.register(with: self) + return super.application(application, didFinishLaunchingWithOptions: launchOptions) + } +} diff --git a/sql_db/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json b/sql_db/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json new file mode 100644 index 0000000..d36b1fa --- /dev/null +++ b/sql_db/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json @@ -0,0 +1,122 @@ +{ + "images" : [ + { + "size" : "20x20", + "idiom" : "iphone", + "filename" : "Icon-App-20x20@2x.png", + "scale" : "2x" + }, + { + "size" : "20x20", + "idiom" : "iphone", + "filename" : "Icon-App-20x20@3x.png", + "scale" : "3x" + }, + { + "size" : "29x29", + "idiom" : "iphone", + "filename" : "Icon-App-29x29@1x.png", + 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b/sql_db/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json @@ -0,0 +1,23 @@ +{ + "images" : [ + { + "idiom" : "universal", + "filename" : "LaunchImage.png", + "scale" : "1x" + }, + { + "idiom" : "universal", + "filename" : "LaunchImage@2x.png", + "scale" : "2x" + }, + { + "idiom" : "universal", + "filename" : "LaunchImage@3x.png", + "scale" : "3x" + } + ], + "info" : { + "version" : 1, + "author" : "xcode" + } +} diff --git a/sql_db/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png b/sql_db/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png new file mode 100644 index 0000000..9da19ea Binary files /dev/null and b/sql_db/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png differ diff --git a/sql_db/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png b/sql_db/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png new file mode 100644 index 0000000..9da19ea Binary files /dev/null and b/sql_db/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png differ diff --git a/sql_db/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png b/sql_db/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png new file mode 100644 index 0000000..9da19ea Binary files /dev/null and b/sql_db/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png differ diff --git a/sql_db/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md b/sql_db/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md new file mode 100644 index 0000000..89c2725 --- /dev/null +++ b/sql_db/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md @@ -0,0 +1,5 @@ +# Launch Screen Assets + +You can customize the launch screen with your own desired assets by replacing the image files in this directory. + +You can also do it by opening your Flutter project's Xcode project with `open ios/Runner.xcworkspace`, selecting `Runner/Assets.xcassets` in the Project Navigator and dropping in the desired images. \ No newline at end of file diff --git a/sql_db/ios/Runner/Base.lproj/LaunchScreen.storyboard b/sql_db/ios/Runner/Base.lproj/LaunchScreen.storyboard new file mode 100644 index 0000000..f2e259c --- /dev/null +++ b/sql_db/ios/Runner/Base.lproj/LaunchScreen.storyboard @@ -0,0 +1,37 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + diff --git a/sql_db/ios/Runner/Base.lproj/Main.storyboard b/sql_db/ios/Runner/Base.lproj/Main.storyboard new file mode 100644 index 0000000..f3c2851 --- /dev/null +++ b/sql_db/ios/Runner/Base.lproj/Main.storyboard @@ -0,0 +1,26 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + diff --git a/sql_db/ios/Runner/Info.plist b/sql_db/ios/Runner/Info.plist new file mode 100644 index 0000000..8d4519d --- /dev/null +++ b/sql_db/ios/Runner/Info.plist @@ -0,0 +1,45 @@ + + + + + CFBundleDevelopmentRegion + $(DEVELOPMENT_LANGUAGE) + CFBundleExecutable + $(EXECUTABLE_NAME) + CFBundleIdentifier + $(PRODUCT_BUNDLE_IDENTIFIER) + CFBundleInfoDictionaryVersion + 6.0 + CFBundleName + sql_db + CFBundlePackageType + APPL + CFBundleShortVersionString + $(FLUTTER_BUILD_NAME) + CFBundleSignature + ???? + CFBundleVersion + $(FLUTTER_BUILD_NUMBER) + LSRequiresIPhoneOS + + UILaunchStoryboardName + LaunchScreen + UIMainStoryboardFile + Main + UISupportedInterfaceOrientations + + UIInterfaceOrientationPortrait + UIInterfaceOrientationLandscapeLeft + UIInterfaceOrientationLandscapeRight + + UISupportedInterfaceOrientations~ipad + + UIInterfaceOrientationPortrait + UIInterfaceOrientationPortraitUpsideDown + UIInterfaceOrientationLandscapeLeft + UIInterfaceOrientationLandscapeRight + + UIViewControllerBasedStatusBarAppearance + + + diff --git a/sql_db/ios/Runner/Runner-Bridging-Header.h b/sql_db/ios/Runner/Runner-Bridging-Header.h new file mode 100644 index 0000000..308a2a5 --- /dev/null +++ b/sql_db/ios/Runner/Runner-Bridging-Header.h @@ -0,0 +1 @@ +#import "GeneratedPluginRegistrant.h" diff --git a/sql_db/lib/database_helper.dart b/sql_db/lib/database_helper.dart new file mode 100644 index 0000000..5121dab --- /dev/null +++ b/sql_db/lib/database_helper.dart @@ -0,0 +1,87 @@ +import 'dart:io'; +import 'package:path/path.dart'; +import 'package:path_provider/path_provider.dart'; +import 'package:sqflite/sqflite.dart'; + +class DatabaseHelper { + static final _databaseName = "MyDatabase.db"; + static final _databaseVersion = 1; + + static final table = 'my_table'; + + static final columnId = '_id'; + static final columnName = 'name'; + static final columnAge = 'age'; + + // make this a singleton class + DatabaseHelper._privateConstructor(); + static final DatabaseHelper instance = DatabaseHelper._privateConstructor(); + + // only have a single app-wide reference to the database + static Database _database; + Future get database async { + if (_database != null) return _database; + // lazily instantiate the db the first time it is accessed + _database = await _initDatabase(); + return _database; + } + + // this opens the database (and creates it if it doesn't exist) + _initDatabase() async { + Directory documentsDirectory = await getApplicationDocumentsDirectory(); + String path = join(documentsDirectory.path, _databaseName); + return await openDatabase(path, + version: _databaseVersion, onCreate: _onCreate); + } + + // SQL code to create the database table + Future _onCreate(Database db, int version) async { + await db.execute(''' + CREATE TABLE $table ( + $columnId INTEGER PRIMARY KEY, + $columnName TEXT NOT NULL, + $columnAge INTEGER NOT NULL + ) + '''); + } + + // Helper methods + + // Inserts a row in the database where each key in the Map is a column name + // and the value is the column value. The return value is the id of the + // inserted row. + Future insert(Map row) async { + Database db = await instance.database; + return await db.insert(table, row); + } + + // All of the rows are returned as a list of maps, where each map is + // a key-value list of columns. + Future>> queryAllRows() async { + Database db = await instance.database; + return await db.query(table); + } + + // All of the methods (insert, query, update, delete) can also be done using + // raw SQL commands. This method uses a raw query to give the row count. + Future queryRowCount() async { + Database db = await instance.database; + return Sqflite.firstIntValue( + await db.rawQuery('SELECT COUNT(*) FROM $table')); + } + + // We are assuming here that the id column in the map is set. The other + // column values will be used to update the row. + Future update(Map row) async { + Database db = await instance.database; + int id = row[columnId]; + return await db.update(table, row, where: '$columnId = ?', whereArgs: [id]); + } + + // Deletes the row specified by the id. The number of affected rows is + // returned. This should be 1 as long as the row exists. + Future delete(int id) async { + Database db = await instance.database; + return await db.delete(table, where: '$columnId = ?', whereArgs: [id]); + } +} diff --git a/sql_db/lib/main.dart b/sql_db/lib/main.dart new file mode 100644 index 0000000..5136e70 --- /dev/null +++ b/sql_db/lib/main.dart @@ -0,0 +1,111 @@ +import 'package:flutter/material.dart'; +import 'package:sql_db/database_helper.dart'; + +void main() => runApp(MyApp()); + +class MyApp extends StatelessWidget { + @override + Widget build(BuildContext context) { + return MaterialApp( + title: 'SQFlite Demo', + theme: ThemeData( + primarySwatch: Colors.blue, + ), + home: MyHomePage(), + ); + } +} + +class MyHomePage extends StatelessWidget { + // reference to our single class that manages the database + final dbHelper = DatabaseHelper.instance; + + // homepage layout + @override + Widget build(BuildContext context) { + return Scaffold( + appBar: AppBar( + title: Text('sqflite'), + ), + body: Center( + child: Column( + mainAxisAlignment: MainAxisAlignment.center, + children: [ + RaisedButton( + child: Text( + 'insert', + style: TextStyle(fontSize: 20), + ), + onPressed: () { + _insert(); + }, + ), + RaisedButton( + child: Text( + 'query', + style: TextStyle(fontSize: 20), + ), + onPressed: () { + _query(); + }, + ), + RaisedButton( + child: Text( + 'update', + style: TextStyle(fontSize: 20), + ), + onPressed: () { + _update(); + }, + ), + RaisedButton( + child: Text( + 'delete', + style: TextStyle(fontSize: 20), + ), + onPressed: () { + _delete(); + }, + ), + ], + ), + ), + ); + } + + // Button onPressed methods + + void _insert() async { + // row to insert + Map row = { + DatabaseHelper.columnName: 'Bob', + DatabaseHelper.columnAge: 23 + }; + final id = await dbHelper.insert(row); + print('inserted row id: $id'); + } + + void _query() async { + final allRows = await dbHelper.queryAllRows(); + print('query all rows:'); + allRows.forEach((row) => print(row)); + } + + void _update() async { + // row to update + Map row = { + DatabaseHelper.columnId: 1, + DatabaseHelper.columnName: 'Mary', + DatabaseHelper.columnAge: 32 + }; + final rowsAffected = await dbHelper.update(row); + print('updated $rowsAffected row(s)'); + } + + void _delete() async { + // Assuming that the number of rows is the id for the last row. + final id = await dbHelper.queryRowCount(); + final rowsDeleted = await dbHelper.delete(id); + print('deleted $rowsDeleted row(s): row $id'); + } +} diff --git a/sql_db/pubspec.lock b/sql_db/pubspec.lock new file mode 100644 index 0000000..3f657ac --- /dev/null +++ b/sql_db/pubspec.lock @@ -0,0 +1,266 @@ +# Generated by pub +# See https://dart.dev/tools/pub/glossary#lockfile +packages: + async: + dependency: transitive + description: + name: async + url: "https://pub.dartlang.org" + source: hosted + version: "2.5.0-nullsafety.2" + boolean_selector: + dependency: transitive + description: + name: boolean_selector + url: "https://pub.dartlang.org" + source: hosted + version: "2.1.0-nullsafety.2" + characters: + dependency: transitive + description: + name: characters + url: "https://pub.dartlang.org" + source: hosted + version: "1.1.0-nullsafety.4" + charcode: + dependency: transitive + description: + name: charcode + url: "https://pub.dartlang.org" + source: hosted + version: "1.2.0-nullsafety.2" + clock: + dependency: transitive + description: + name: clock + url: "https://pub.dartlang.org" + source: hosted + version: "1.1.0-nullsafety.2" + collection: + dependency: transitive + description: + name: collection + url: "https://pub.dartlang.org" + source: hosted + version: "1.15.0-nullsafety.4" + cupertino_icons: + dependency: "direct main" + description: + name: cupertino_icons + url: "https://pub.dartlang.org" + source: hosted + version: "1.0.0" + fake_async: + dependency: transitive + description: + name: fake_async + url: "https://pub.dartlang.org" + source: hosted + version: "1.2.0-nullsafety.2" + ffi: + dependency: transitive + description: + name: ffi + url: "https://pub.dartlang.org" + source: hosted + version: "0.1.3" + file: + dependency: transitive + description: + name: file + url: "https://pub.dartlang.org" + source: hosted + version: "5.2.1" + flutter: + dependency: "direct main" + description: flutter + source: sdk + version: "0.0.0" + flutter_test: + dependency: "direct dev" + description: flutter + source: sdk + version: "0.0.0" + intl: + dependency: transitive + description: + name: intl + url: "https://pub.dartlang.org" + source: hosted + version: "0.16.1" + matcher: + dependency: transitive + description: + name: matcher + url: "https://pub.dartlang.org" + source: hosted + version: "0.12.10-nullsafety.2" + meta: + dependency: transitive + description: + name: meta + url: "https://pub.dartlang.org" + source: hosted + version: "1.3.0-nullsafety.5" + path: + dependency: transitive + description: + name: path + url: "https://pub.dartlang.org" + source: hosted + version: "1.8.0-nullsafety.2" + path_provider: + dependency: "direct main" + description: + name: path_provider + url: "https://pub.dartlang.org" + source: hosted + version: "1.6.24" + path_provider_linux: + dependency: transitive + description: + name: path_provider_linux + url: "https://pub.dartlang.org" + source: hosted + version: "0.0.1+2" + path_provider_macos: + dependency: transitive + description: + name: path_provider_macos + url: "https://pub.dartlang.org" + source: hosted + version: "0.0.4+6" + path_provider_platform_interface: + dependency: transitive + description: + name: path_provider_platform_interface + url: "https://pub.dartlang.org" + source: hosted + version: "1.0.4" + path_provider_windows: + dependency: transitive + description: + name: path_provider_windows + url: "https://pub.dartlang.org" + source: hosted + version: "0.0.4+3" + platform: + dependency: transitive + description: + name: platform + url: "https://pub.dartlang.org" + source: hosted + version: "2.2.1" + plugin_platform_interface: + dependency: transitive + description: + name: plugin_platform_interface + url: "https://pub.dartlang.org" + source: hosted + version: "1.0.3" + process: + dependency: transitive + description: + name: process + url: "https://pub.dartlang.org" + source: hosted + version: "3.0.13" + sky_engine: + dependency: transitive + description: flutter + source: sdk + version: "0.0.99" + source_span: + dependency: transitive + description: + name: source_span + url: "https://pub.dartlang.org" + source: hosted + version: "1.8.0-nullsafety.3" + sqflite: + dependency: "direct main" + description: + name: sqflite + url: "https://pub.dartlang.org" + source: hosted + version: "1.3.2+1" + sqflite_common: + dependency: transitive + description: + name: sqflite_common + url: "https://pub.dartlang.org" + source: hosted + version: "1.0.2+1" + stack_trace: + dependency: transitive + description: + name: stack_trace + url: "https://pub.dartlang.org" + source: hosted + version: "1.10.0-nullsafety.5" + stream_channel: + dependency: transitive + description: + name: stream_channel + url: "https://pub.dartlang.org" + source: hosted + version: "2.1.0-nullsafety.2" + string_scanner: + dependency: transitive + description: + name: string_scanner + url: "https://pub.dartlang.org" + source: hosted + version: "1.1.0-nullsafety.2" + synchronized: + dependency: transitive + description: + name: synchronized + url: "https://pub.dartlang.org" + source: hosted + version: "2.2.0+2" + term_glyph: + dependency: transitive + description: + name: term_glyph + url: "https://pub.dartlang.org" + source: hosted + version: "1.2.0-nullsafety.2" + test_api: + dependency: transitive + description: + name: test_api + url: "https://pub.dartlang.org" + source: hosted + version: "0.2.19-nullsafety.4" + typed_data: + dependency: transitive + description: + name: typed_data + url: "https://pub.dartlang.org" + source: hosted + version: "1.3.0-nullsafety.4" + vector_math: + dependency: transitive + description: + name: vector_math + url: "https://pub.dartlang.org" + source: hosted + version: "2.1.0-nullsafety.4" + win32: + dependency: transitive + description: + name: win32 + url: "https://pub.dartlang.org" + source: hosted + version: "1.7.3" + xdg_directories: + dependency: transitive + description: + name: xdg_directories + url: "https://pub.dartlang.org" + source: hosted + version: "0.1.2" +sdks: + dart: ">=2.11.0-0.0 <=2.12.0-3.0.dev" + flutter: ">=1.22.2 <2.0.0" diff --git a/sql_db/pubspec.yaml b/sql_db/pubspec.yaml new file mode 100644 index 0000000..714d850 --- /dev/null +++ b/sql_db/pubspec.yaml @@ -0,0 +1,79 @@ +name: sql_db +description: A new Flutter project. + +# The following line prevents the package from being accidentally published to +# pub.dev using `pub publish`. This is preferred for private packages. +publish_to: 'none' # Remove this line if you wish to publish to pub.dev + +# The following defines the version and build number for your application. +# A version number is three numbers separated by dots, like 1.2.43 +# followed by an optional build number separated by a +. +# Both the version and the builder number may be overridden in flutter +# build by specifying --build-name and --build-number, respectively. +# In Android, build-name is used as versionName while build-number used as versionCode. +# Read more about Android versioning at https://developer.android.com/studio/publish/versioning +# In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion. +# Read more about iOS versioning at +# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html +version: 1.0.0+1 + +environment: + sdk: ">=2.7.0 <3.0.0" + +dependencies: + flutter: + sdk: flutter + sqflite: ^1.2.0 + path_provider: ^1.5.1 + + + + # The following adds the Cupertino Icons font to your application. + # Use with the CupertinoIcons class for iOS style icons. + cupertino_icons: ^1.0.0 + +dev_dependencies: + flutter_test: + sdk: flutter + +# For information on the generic Dart part of this file, see the +# following page: https://dart.dev/tools/pub/pubspec + +# The following section is specific to Flutter. +flutter: + + # The following line ensures that the Material Icons font is + # included with your application, so that you can use the icons in + # the material Icons class. + uses-material-design: true + + # To add assets to your application, add an assets section, like this: + # assets: + # - images/a_dot_burr.jpeg + # - images/a_dot_ham.jpeg + + # An image asset can refer to one or more resolution-specific "variants", see + # https://flutter.dev/assets-and-images/#resolution-aware. + + # For details regarding adding assets from package dependencies, see + # https://flutter.dev/assets-and-images/#from-packages + + # To add custom fonts to your application, add a fonts section here, + # in this "flutter" section. Each entry in this list should have a + # "family" key with the font family name, and a "fonts" key with a + # list giving the asset and other descriptors for the font. For + # example: + # fonts: + # - family: Schyler + # fonts: + # - asset: fonts/Schyler-Regular.ttf + # - asset: fonts/Schyler-Italic.ttf + # style: italic + # - family: Trajan Pro + # fonts: + # - asset: fonts/TrajanPro.ttf + # - asset: fonts/TrajanPro_Bold.ttf + # weight: 700 + # + # For details regarding fonts from package dependencies, + # see https://flutter.dev/custom-fonts/#from-packages diff --git a/sql_db/test/widget_test.dart b/sql_db/test/widget_test.dart new file mode 100644 index 0000000..4e67a50 --- /dev/null +++ b/sql_db/test/widget_test.dart @@ -0,0 +1,30 @@ +// This is a basic Flutter widget test. +// +// To perform an interaction with a widget in your test, use the WidgetTester +// utility that Flutter provides. For example, you can send tap and scroll +// gestures. You can also use WidgetTester to find child widgets in the widget +// tree, read text, and verify that the values of widget properties are correct. + +import 'package:flutter/material.dart'; +import 'package:flutter_test/flutter_test.dart'; + +import 'package:sql_db/main.dart'; + +void main() { + testWidgets('Counter increments smoke test', (WidgetTester tester) async { + // Build our app and trigger a frame. + await tester.pumpWidget(MyApp()); + + // Verify that our counter starts at 0. + expect(find.text('0'), findsOneWidget); + expect(find.text('1'), findsNothing); + + // Tap the '+' icon and trigger a frame. + await tester.tap(find.byIcon(Icons.add)); + await tester.pump(); + + // Verify that our counter has incremented. + expect(find.text('0'), findsNothing); + expect(find.text('1'), findsOneWidget); + }); +}