推荐开源项目：React Native 动画提交按钮

React Native 的动画提交按钮可以使用 react-native-reanimated 和 react-native-gesture-handler 库来实现。以下是一个简单的例子：

首先，确保安装了必要的库：

npm install react-native-reanimated react-native-gesture-handler

然后，可以创建一个简单的动画提交按钮组件：

import React from 'react';
import { Text, View, StyleSheet } from 'react-native';
import Animated, { useAnimatedStyle, useSharedValue, withTiming } from 'react-native-reanimated';
import { TouchableOpacity } from 'react-native-gesture-handler';
 
const AnimatedSubmitButton = () => {
  const progress = useSharedValue(0);
 
  const buttonStyle = useAnimatedStyle(() => ({
    opacity: withTiming(progress.value),
    transform: [
      {
        scale: progress.value,
      },
    ],
  }));
 
  const handlePressIn = () => {
    progress.value = 0.5;
  };
 
  const handlePressOut = () => {
    progress.value = 1;
  };
 
  return (
    <View style={styles.container}>
      <TouchableOpacity
        style={styles.button}
        onPressIn={handlePressIn}
        onPressOut={handlePressOut}
      >
        <Animated.View style={[styles.buttonContent, buttonStyle]}>
          <Text style={styles.buttonText}>Submit</Text>
        </Animated.View>
      </TouchableOpacity>
    </View>
  );
};
 
const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
  },
  button: {
    backgroundColor: '#3498db',
    padding: 10,
    borderRadius: 5,
  },
  buttonContent: {
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#2980b9',
    borderRadius: 5,
  },
  buttonText: {
    color: 'white',
    fontSize: 16,
    fontWeight: 'bold',
  },
});
 
export default AnimatedSubmitButton;

这个组件使用了 react-native-reanimated 的 useSharedValue 和 useAnimatedStyle 来创建一个简单的按钮按压动画。当按钮被按下时，进度值 (progress.value) 被设置为 0.5，而当按钮被释放时，进度值被设置回 1，从而触发动画回到正常状态。这个例子展示了如何结合 Reanimated 和手势处理库来创建自定义动画。