Flutter中的延时方法

使用Timer

示例代码：

class AnimatedFlutterLogo extends StatefulWidget {
	  @override
	  State<StatefulWidget> createState() => new _AnimatedFlutterLogoState();
}

class _AnimatedFlutterLogoState extends State<AnimatedFlutterLogo> {
	Timer _timer;
	FlutterLogoStyle _logoStyle = FlutterLogoStyle.markOnly;

	_AnimatedFlutterLogoState() {
		_timer = new Timer(const Duration(milliseconds: 400), () {
      		setState(() {
				_logoStyle = FlutterLogoStyle.horizontal;
			});
		});
	}
	
	@override
	void dispose() {
		super.dispose();
		_timer.cancel();
	}
	
	@override
	Widget build(BuildContext context) {
		return new FlutterLogo(
			size: 200.0,
			textColor: Palette.white,
			style: _logoStyle,
		);
	}
}

使用Future.delayed

示例代码：

Future.delayed(const Duration(milliseconds: 500), () {

// Here you can write your code

  setState(() {
    // Here you can write your code for open new view
  });

});

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