react native Animated简单使用方法
import { Animated, } from 'react-native'; constructor(props){ super(props) this.state={ fadeInOpacity: new Animated.Value(0), // 初始值 } } componentDidMount(){ Animated.timing(this.state.fadeInOpacity, { toValue: 1, // 目标值 }).start(); } render(){ return( <Animated.View style={{ opacity: this.state.fadeInOpacity,justifyContent:'center',alignItems:'center', backgroundColor:"#333",width:common.deviceWidth,height:common.deviceWidth*0.055}}> <Text style={{color:"white"}}>123</Text> </Animated.View> ) }