platforms_source_gen

A Flutter package gen platform's source code, include Android or iOS, Web ....

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Overview

platforms_source_gen providers utilities from automated source code generation from Dart file.

When you build flutter as a Module in Android, iOS or other platform, you have to write some same function code.

eg: Route Path

When you dump to a android page, and then you dump to flutter page, and dump to android page...
you can use some package, like flutter_boost dump:

in android:

public class Route {
    public static final String android_page1 = "/android/page1";
    public static final String android_page2 = "/android/page2";
    //.......
    public static final String flutter_page1 = "/flutter/page1";
    public static final String flutter_page2 = "/flutter/page2";
    //.......
}

in flutter:

class Route {
  static const String android_page1 = "/android/page1";
  static const String android_page2 = "/android/page2";
  //.......
  static const String flutter_page1 = "/flutter/page1";
  static const String flutter_page2 = "/flutter/page2";
  //.......
}

in iOS:

@interface MQQFlutterGen_Route : NSObject

@property (nonatomic, strong) String *main_page;
@property (nonatomic, strong) String *mine_main;
@property (nonatomic, assign) int int_value;

@end

and Swift code or js code ... this tools can let you only write dart code, and auto generates other platform's code.

Quick Start

01 Step

Add a dependency on platforms_source_gen in your pubspec.yaml file and use dart pub get down this package:

dev_dependencies:
  platforms_source_gen: version

the versions click this, more installing info, you can see this

02 Step

write your dart class file in flutter project path and format it, for example: ./lib/example :

Note: Format is very import, it will fail if dart file have no format.

class InnerClass {
  String a;
  int b;
}

class Route {
  static const String main_page = "/main/page"; //main page
  static const String mine_main = "/mine/main"; //
  static const int int_value = 123;
}

more example class, your can get it from github.

03 Step

write a main fun in ./test/any.dart and run:

Note: the any.dart is in test dir

import 'package:platforms_source_gen/platforms_source_gen.dart';
void main() async {
  List<GenClassBean> genClassBeans = await platforms_source_gen_init(
    "./lib/example", //you dart file path
  );
  platforms_source_gent_start(
      "com.siyehua.example", //javaPackage
      "./Android_gen", // androidSavePath
      genClassBeans,
      nullSafe: true);
  platforms_source_start_gen_objc(
      "MQQFlutterGen_", // iOS Pre
      "./iOS_gen", //iOS save path
      genClassBeans,
      nullSafe: true);
}

now, you can find the android file in your custom path ./Android_gen, or Objective-C file in ./iOS_gen.

Support

class	support
class	✅
abstract class(interface)	✅
extends	❌
implements	❌
compose	✅

Note: abstract class must not have any implemented methods, property must not have any default value.

method	support
all	✅

Note: Support abstract method in abstract class, but don't support method not in class.

Type	support	Android	iOS
bool	✅	Boolean	BOOL
int	✅	Long	int
double	✅	Double	double
String	✅	String	NSString
Uint8List	✅	byte[]	NSData
Int32List	✅	int[]	NSData
Int64List	✅	long[]	NSData
Float64List	✅	double[]	NSData
List< T >	✅	ArrayList<>	NSArray
Map<T, U>	✅	HashMap<T, U>	NSDictionary
var	❌
dynamic	❌
Object	✅	❌	id
Custom Class	✅

Note: Currently don't support List a= [];, because it's the same as List<dynamic> a =[];, , and dynamic feature doesn't support, Map is same.

FQA & BUG

1. Why add package in dev_dependencies?
   because this tool only use to create other platform language, so we don't need to add it in dependencies.
2. It's the same with source_gen or builder?
   the source_gen will create dart code, but this tool create other platform codes.

For more questions, you can go to issues