手势指令

import 'package:flutter/material.dart';

import 'package:flutter/widgets.dart';

void main()=>runApp(MyApp());

class MyAppextends StatelessWidget {

@override

  Widget build(BuildContext context) {

return MaterialApp(

home:Scaffold(

body:GestureDetector(

child:Container(

width:200,

height:200,

color: Colors.red,

),

//        单击

            onTap: (){

print("单击");

},

//        双击

            onDoubleTap: (){

print("双击");

},

//        长按

            onLongPress: (){

print("长按");

},

// 拖动

            onHorizontalDragStart: (e){

print("拖动");

},

//        缩放

            onScaleUpdate: (e){

print("缩放");

},

),

)

);

}

}