Flutter物理内存查询插件ios_physical_memory的使用

Flutter物理内存查询插件ios_physical_memory的使用

ios_physical_memory 是一个简单的插件,用于在iOS设备上获取物理内存信息。

使用方法

首先,你需要在你的pubspec.yaml文件中添加这个插件:

dependencies:
  ios_physical_memory: ^0.0.1

然后运行flutter pub get来安装这个插件。

接下来,在你的Dart代码中导入该插件并使用它:

import 'package:ios_physical_memory/ios_physical_memory.dart';

String? physicalMemory = await IosPhysicalMemory.physicalMemory;
String? freeAvailableMemory = await IosPhysicalMemory.availableFreeMemory;

完整示例代码

以下是一个完整的示例代码,展示了如何在Flutter应用中使用ios_physical_memory插件来获取iOS设备的物理内存信息。

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

import 'package:flutter/services.dart';
import 'package:ios_physical_memory/ios_physical_memory.dart';

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

class MyApp extends StatefulWidget {
  const MyApp({Key? key}) : super(key: key);

  [@override](/user/override)
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _platformVersion = 'Unknown';
  String _physicalMemory = 'Unknown';
  String _availableMemory = 'Unknown';

  [@override](/user/override)
  void initState() {
    super.initState();
    initPlatformState();
    initPhysicalMemory();
    initAvailableMemory();
  }

  // 初始化平台版本
  Future<void> initPlatformState() async {
    String platformVersion;
    try {
      platformVersion = await IosPhysicalMemory.platformVersion ?? 'Unknown platform version';
    } on PlatformException {
      platformVersion = 'Failed to get platform version.';
    }

    if (!mounted) return;

    setState(() {
      _platformVersion = platformVersion;
    });
  }

  // 初始化物理内存
  Future<void> initPhysicalMemory() async {
    String physicalMemory;
    try {
      physicalMemory = await IosPhysicalMemory.physicalMemory ?? 'Unknown platform version';
    } on PlatformException {
      physicalMemory = 'Failed to get platform version.';
    }
    if (!mounted) return;

    setState(() {
      _physicalMemory = physicalMemory;
    });
  }

  // 初始化可用内存
  Future<void> initAvailableMemory() async {
    String availableMemory;
    try {
      availableMemory = await IosPhysicalMemory.availableFreeMemory ?? 'Unknown platform version';
    } on PlatformException {
      availableMemory = 'Failed to get platform version.';
    }
    if (!mounted) return;

    setState(() {
      _availableMemory = availableMemory;
    });
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('插件示例应用'),
        ),
        body: Center(
          child: Column(
            children: [
              Text('运行于: $_platformVersion\n'),
              Text('总内存: $_physicalMemory\n'),
              Text('可用内存: $_availableMemory\n'),
            ],
          ),
        ),
      ),
    );
  }
}

更多关于Flutter物理内存查询插件ios_physical_memory的使用的实战教程也可以访问 https://www.itying.com/category-92-b0.html

1 回复

更多关于Flutter物理内存查询插件ios_physical_memory的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html


在 Flutter 中,如果你想查询 iOS 设备的物理内存信息,可以使用 ios_physical_memory 插件。以下是如何使用该插件的步骤:

1. 添加依赖

首先,你需要在 pubspec.yaml 文件中添加 ios_physical_memory 插件的依赖:

dependencies:
  flutter:
    sdk: flutter
  ios_physical_memory: ^1.0.0  # 请检查最新版本

然后运行 flutter pub get 来获取依赖。

2. 导入插件

在你的 Dart 文件中导入 ios_physical_memory 插件:

import 'package:ios_physical_memory/ios_physical_memory.dart';

3. 查询物理内存

你可以使用 IosPhysicalMemory 类来查询设备的物理内存信息。以下是一个简单的示例:

void getPhysicalMemory() async {
  try {
    int physicalMemory = await IosPhysicalMemory.physicalMemory;
    print('Physical Memory: $physicalMemory bytes');
  } catch (e) {
    print('Failed to get physical memory: $e');
  }
}

4. 调用方法

在你的代码中调用 getPhysicalMemory 方法来获取物理内存信息:

void main() {
  getPhysicalMemory();
}

5. 运行应用

运行你的 Flutter 应用,你将在控制台中看到设备的物理内存信息。

注意事项

  • ios_physical_memory 插件仅适用于 iOS 设备。如果你在 Android 或其他平台上运行该代码,可能会抛出异常或不返回有效结果。
  • 插件的功能依赖于 iOS 系统 API,因此可能会受到系统版本的限制。

示例代码

以下是完整的示例代码:

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

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

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('iOS Physical Memory Example'),
        ),
        body: Center(
          child: ElevatedButton(
            onPressed: () {
              getPhysicalMemory();
            },
            child: Text('Get Physical Memory'),
          ),
        ),
      ),
    );
  }
}

void getPhysicalMemory() async {
  try {
    int physicalMemory = await IosPhysicalMemory.physicalMemory;
    print('Physical Memory: $physicalMemory bytes');
  } catch (e) {
    print('Failed to get physical memory: $e');
  }
}
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