对于在iOS和Android上略有不同的UI,即在不同的平台上,必须有一种方法来检测应用程序在哪个平台上运行,但我在文档中找不到它。是什么?
当前回答
所以这里有一个小工具,我用来检测平台和操作系统的反应适当。
import'dart:io' show Platform;
import 'package:flutter/foundation.dart' show kIsWeb;
class Util {
os getPlatform() {
if (kIsWeb) {
return os.Web;
} else if (Platform.isIOS) {
return os.IOS;
} else if (Platform.isAndroid) {
return os.Android;
} else if (Platform.isFuchsia) {
return os.Fuchsia;
} else if (Platform.isLinux) {
return os.Linux;
} else if (Platform.isMacOS) {
return os.MacOS;
} else if (Platform.isWindows) {
return os.Windows;
}
return os.Unknown;
}
bool isWeb() {
return (getPlatform()==os.Web);
}
bool isMobile() {
os platform = getPlatform();
return (platform == os.Android || platform == os.IOS || platform== os.Fuchsia);
}
bool isComputer() {
os platform = getPlatform();
return (platform == os.Linux || platform == os.MacOS || platform== os.Windows);
}
}
enum os { Unknown, Web, Android, Fuchsia, IOS, Linux, MacOS, Windows }
其他回答
Dart主机平台检查。
导入'dart:io'作为io;
_checkingHostPlatform(){
if(IO.Platform.isAndroid){
//Execute code for android
}else if(IO.Platform.isIOS){
//Execute code for iOS
}else{
//Execute code for other platforms
}
}
导入io库很简单
import'dart:io' show Platform;
void main(){
if(Platform.isIOS){
return someThing();
}else if(Platform.isAndroid){
return otherThing();
}else if(Platform.isMacOS){
return anotherThing();
}
或者用非常简单的方式
Platform.isIOS ? someThing() : anOther(),
如果您只是需要一个字符串来记录日志,您可以使用Platform。operatingSystem,返回操作系统名称为小写字符串。
import 'dart:io';
import 'package:flutter/foundation.dart';
String _getPlatform() {
if (kIsWeb) return 'web';
return Platform.operatingSystem;
}
这个自定义创建的类将帮助您检测平台:
import 'package:flutter/foundation.dart'
show defaultTargetPlatform, kIsWeb, TargetPlatform;
enum Os {
web,
android,
ios,
macOS,
linux,
windows,
fuchsia,
}
class Platform {
const Platform();
/// Platform is Web.
static bool get isWeb => os == Os.web;
/// Platform is Android.
static bool get isAndroid => os == Os.android;
/// Platform is IOS.
static bool get isIOS => os == Os.ios;
/// Platform is Fuchsia.
static bool get isFuchsia => os == Os.fuchsia;
/// Platform is Linux.
static bool get isLinux => os == Os.linux;
/// Platform is MacOS.
static bool get isMacOS => os == Os.macOS;
/// Platform is Windows.
static bool get isWindows => os == Os.windows;
/// Platform is Android or IOS.
static bool get isMobile => isAndroid || isIOS;
/// Platform is Android or IOS or Fuchsia.
static bool get isFullMobile => isMobile || isFuchsia;
/// Platform is Linux or Windows or MacOS.
static bool get isDesktop => isLinux || isWindows || isMacOS;
/// Getting the os name.
static Os get os {
if (kIsWeb) {
return Os.web;
}
switch (defaultTargetPlatform) {
case TargetPlatform.android:
return Os.android;
case TargetPlatform.iOS:
return Os.ios;
case TargetPlatform.macOS:
return Os.macOS;
case TargetPlatform.windows:
return Os.windows;
case TargetPlatform.fuchsia:
return Os.fuchsia;
case TargetPlatform.linux:
return Os.linux;
}
}
}
最“扑”的答案如下:
import 'package:flutter/foundation.dart' show TargetPlatform;
//...
if(Theme.of(context).platform == TargetPlatform.android)
//do sth for Android
else if(Theme.of(context).platform == TargetPlatform.iOS)
//do sth else for iOS
else if(Theme.of(context).platform == TargetPlatform.fuchsia)
//even do sth else for Fuchsia OS