在 react-native 中使用 Java 警报对话框答案

【问题标题】：Use Java AlertDialog in reat-native在 react-native 中使用 Java 警报对话框
【发布时间】：2021-08-06 23:57:41
【问题描述】：

我正在开发一个使用 NearbyConnection API 的 react-native 应用程序。我不希望自动接受连接。用户应该能够接受或拒绝连接。我尝试了谷歌提出的代码（代码如下）

new AlertDialog.Builder(context)
      .setTitle("Accept connection to " + info.getEndpointName())
      .setMessage("Confirm the code matches on both devices: " + info.getAuthenticationDigits())
      .setPositiveButton(
          "Accept",
          (DialogInterface dialog, int which) ->
              // The user confirmed, so we can accept the connection.
              Nearby.getConnectionsClient(context)
                  .acceptConnection(endpointId, payloadCallback))
      .setNegativeButton(
          "Refuse",
          (DialogInterface dialog, int which) ->
              // The user canceled, so we should reject the connection.
              Nearby.getConnectionsClient(context).rejectConnection(endpointId))
      .setIcon(android.R.drawable.ic_dialog_alert)
      .show();

但它不起作用（应用程序在此级别崩溃）。有没有办法重写此代码以与 reat-native 兼容？或者是否可以执行一个JS函数并在Java中得到结果？

【问题讨论】：

标签： android react-native android-alertdialog

【解决方案1】：

您只需在下面执行此操作即可在 react-native 中获得跨平台原生警报。只需从 react-native 导入 Alert。

import React, { useState } from "react";
import { View, StyleSheet, Button, Alert } from "react-native";

const App = () => {
  const createTwoButtonAlert = () =>
    Alert.alert(
      "Alert Title",
      "My Alert Msg",
      [
        {
          text: "Cancel",
          onPress: () => console.log("Cancel Pressed"),
          style: "cancel"
        },
        { text: "OK", onPress: () => console.log("OK Pressed") }
      ]
    );

  const createThreeButtonAlert = () =>
    Alert.alert(
      "Alert Title",
      "My Alert Msg",
      [
        {
          text: "Ask me later",
          onPress: () => console.log("Ask me later pressed")
        },
        {
          text: "Cancel",
          onPress: () => console.log("Cancel Pressed"),
          style: "cancel"
        },
        { text: "OK", onPress: () => console.log("OK Pressed") }
      ]
    );

  return (
    <View style={styles.container}>
      <Button title={"2-Button Alert"} onPress={createTwoButtonAlert} />
      <Button title={"3-Button Alert"} onPress={createThreeButtonAlert} />
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: "space-around",
    alignItems: "center"
  }
});

export default App;

【讨论】：