Flutter内存信息查询插件memory_info_platform_interface的使用

Flutter内存信息查询插件memory_info_platform_interface的使用

概述

memory_info_platform_interface 是一个用于查询设备内存信息的插件。它提供了一个通用的平台接口，可以在Android和iOS平台上获取内存相关信息。

开始使用

1. 添加依赖

首先，在你的 pubspec.yaml 文件中添加对 memory_info_platform_interface 的依赖：

dependencies:
  flutter:
    sdk: flutter
  memory_info_platform_interface: ^0.0.1

然后运行 flutter pub get 来安装依赖。

2. 初始化插件

在你的 Dart 代码中导入并初始化插件：

import 'package:flutter/material.dart';
import 'package:memory_info_platform_interface/memory_info_platform_interface.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: MemoryInfoScreen(),
    );
  }
}

3. 获取内存信息

接下来，编写一个屏幕来获取和显示内存信息。这里我们创建一个简单的屏幕 MemoryInfoScreen：

class MemoryInfoScreen extends StatefulWidget {
  [@override](/user/override)
  _MemoryInfoScreenState createState() => _MemoryInfoScreenState();
}

class _MemoryInfoScreenState extends State<MemoryInfoScreen> {
  String _memoryInfo = "Loading...";

  [@override](/user/override)
  void initState() {
    super.initState();
    // 调用插件方法获取内存信息
    MemoryInfoPlatform.instance.getMemoryInfo().then((info) {
      setState(() {
        _memoryInfo = "Total Memory: ${info.totalMemory}\n"
                      "Free Memory: ${info.freeMemory}\n"
                      "Used Memory: ${info.usedMemory}";
      });
    }).catchError((error) {
      setState(() {
        _memoryInfo = "Error: $error";
      });
    });
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("内存信息"),
      ),
      body: Center(
        child: Text(_memoryInfo),
      ),
    );
  }
}

完整示例代码

import 'package:flutter/material.dart';
import 'package:memory_info_platform_interface/memory_info_platform_interface.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: MemoryInfoScreen(),
    );
  }
}

class MemoryInfoScreen extends StatefulWidget {
  [@override](/user/override)
  _MemoryInfoScreenState createState() => _MemoryInfoScreenState();
}

class _MemoryInfoScreenState extends State<MemoryInfoScreen> {
  String _memoryInfo = "Loading...";

  [@override](/user/override)
  void initState() {
    super.initState();
    // 调用插件方法获取内存信息
    MemoryInfoPlatform.instance.getMemoryInfo().then((info) {
      setState(() {
        _memoryInfo = "Total Memory: ${info.totalMemory}\n"
                      "Free Memory: ${info.freeMemory}\n"
                      "Used Memory: ${info.usedMemory}";
      });
    }).catchError((error) {
      setState(() {
        _memoryInfo = "Error: $error";
      });
    });
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("内存信息"),
      ),
      body: Center(
        child: Text(_memoryInfo),
      ),
    );
  }
}