关于Flutter的大杂烩

1.Flutter 中界面绘制完成时的监听是通过WidgetBinding.instance.addPostFrameCallback((callback){

//这里面写监听界面的代码

})

 

2.flutter强制container撑满整个屏幕 width:double.infinity,

 

3.在setState时会报错：

This error might indicate a memory leak if setState() is being called because another object is retaining a reference to this State object after it has been removed from the tree. To avoid memory leaks, consider breaking the reference to this object during dispose().

内存泄露，调用setState的时候要在dispose()方法之前，如果执行完dispose()方法之后再调用setState()就会报这个错误。在调用之前做个判断就可以了。

if(mounted) {

setState(() {});

}

这是这个属性在State类中的注释：

/// It is an error to call [setState] unless [mounted] is true.

bool get mounted => _element != null;

 

4.在Dart中，没有基本数据类型，也就是没有默认值，或者说默认值都是null，一定记得在声明变量之后给这个变量赋上初始值，不然会在运行时报错。

 

5.Fultter 下拉刷新的控件

# https://github.com/peng8350/flutter_pulltorefresh

 

6.Flutter ViewPage控件 Swiper

# https://github.com/best-flutter/flutter_swiper

 

7.Flutter WebViewk控件 flutter_webview_plugin

#https://pub.dartlang.org/packages/flutter_webview_plugin

 

8.Flutter 联网控件

# https://github.com/flutterchina/dio

dio: ^1.0.13

 

9.Flutter插件网址：https://pub.dartlang.org/flutter

像获取设备信息，使用Toast， SQLite ，Sharedperferences都在这里面

 

10.咸鱼的简书网址：https://www.jianshu.com/u/cf5c0e4b1111

 

11.外加自己写的一个很烂的代码：https://github.com/qq245425070/flutter_wanandroid