Platform
プラットフォームサービスは、現在のデバイスに関する情報を取得するために使用できます。platforms
メソッドを利用することでデバイスに関連付けられているすべてのプラットフォームを取得できます。例えば、アプリがタブレットから表示されているかどうか(モバイルデバイスまたはブラウザ上にある場合)、および正確なプラットフォーム(iOS、Androidなど)などです。右から左への言語の向きなどを使用すれば、デバイスの向きもわかります。この情報を使用して、あらゆるデバイスに合わせてアプリを完全にカスタマイズできます。
Usage
import { Platform } from '@ionic/angular';
@Component({...})
export class MyPage {
constructor(public platform: Platform) {
}
}
Methods
is
Description | Depending on the platform the user is on, is(platformName) will return true or false. Note that the same app can return true for more than one platform name. For example, an app running from an iPad would return true for the platform names: mobile , ios , ipad , and tablet . Additionally, if the app was running from Cordova then cordova would be true. |
Signature | is(platformName: Platforms) => boolean |
Parameters
Name | Type | Description |
---|---|---|
platformName | Platforms | Name of the platform. Available options are android, capacitor, cordova, desktop, electron, hybrid, ios, ipad, iphone, mobile, phablet, pwa, tablet |
Platforms
以下は、利用可能なすべての platform の値とそれに対応する説明をまとめた表です。
Platform Name | Description |
---|---|
android | a device running Android |
capacitor | a device running Capacitor |
cordova | a device running Cordova |
desktop | a desktop device |
electron | a desktop device running Electron |
hybrid | a device running Capacitor or Cordova |
ios | a device running iOS |
ipad | an iPad device |
iphone | an iPhone device |
mobile | a mobile device |
mobileweb | a web browser running in a mobile device |
phablet | a phablet device |
pwa | a PWA app |
tablet | a tablet device |
Customizing Platform Detection Functions
The function used to detect a specific platform can be overridden by providing an alternative function in the global Ionic config. Each function takes window
as a parameter and returns a boolean.
import { IonicModule } from '@ionic/angular';
@NgModule({
...
imports: [
BrowserModule,
IonicModule.forRoot({
platform: {
/** The default `desktop` function returns false for devices with a touchscreen.
* This is not always wanted, so this function tests the User Agent instead.
**/
'desktop': (win) => {
const isMobile = /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(win.navigator.userAgent);
return !isMobile;
}
},
}),
AppRoutingModule
],
...
})
type PlatformConfig = {
android?: ((win: Window) => boolean) | undefined;
capacitor?: ((win: Window) => boolean) | undefined;
cordova?: ((win: Window) => boolean) | undefined;
desktop?: ((win: Window) => boolean) | undefined;
electron?: ((win: Window) => boolean) | undefined;
hybrid?: ((win: Window) => boolean) | undefined;
ios?: ((win: Window) => boolean) | undefined;
ipad?: ((win: Window) => boolean) | undefined;
iphone?: ((win: Window) => boolean) | undefined;
mobile?: ((win: Window) => boolean) | undefined;
mobileweb?: ((win: Window) => boolean) | undefined;
phablet?: ((win: Window) => boolean) | undefined;
pwa?: ((win: Window) => boolean) | undefined;
tablet?: ((win: Window) => boolean) | undefined;
};
platforms
Description | Depending on what device you are on, platforms can return multiple values. Each possible value is a hierarchy of platforms. For example, on an iPhone, it would return mobile , ios , and iphone . |
Signature | platforms() => string[] |
ready
Description | Returns a promise when the platform is ready and native functionality can be called. If the app is running from within a web browser, then the promise will resolve when the DOM is ready. When the app is running from an application engine such as Cordova, then the promise will resolve when Cordova triggers the deviceready event. The resolved value is the readySource , which states the platform that was used. For example, when Cordova is ready, the resolved ready source is cordova . The default ready source value will be dom . The readySource is useful if different logic should run depending on the platform the app is running from. For example, only Capacitor and Cordova can execute the status bar plugin, so the web should not run status bar plugin logic. |
Signature | ready() => Promise<string> |
isRTL
Description | Returns if this app is using right-to-left language direction or not. We recommend the app's index.html file already has the correct dir attribute value set, such as <html dir="ltr"> or <html dir="rtl"> . W3C: Structural markup and right-to-left text in HTML |
Signature | isRTL() => boolean |
isLandscape
Description | Returns true if the app is in landscape mode. |
Signature | isLandscape() => boolean |
isPortrait
Description | Returns true if the app is in portrait mode. |
Signature | isPortrait() => boolean |
width
Description | Gets the width of the platform's viewport using window.innerWidth . |
Signature | width() => number |
height
Description | Gets the height of the platform's viewport using window.innerHeight . |
Signature | height() => number |
url
Description | Get the current url. |
Signature | url() => string |
testUserAgent
Description | Returns true if the expression is included in the user agent string. |
Signature | testUserAgent(expression: string) => boolean |
Parameters
Name | Type | Description |
---|---|---|
expression | string | The string to check in the user agent |
Events
pause
pause
イベントは、ネイティブ・プラットフォームがアプリケーションをバックグラウンドに置いたとき、通常はユーザーが別のアプリケーションに切り替えたときに発生します。このイベントは、Cordova/Capacitorアプリケーションがバックグラウンドに置かれたときに発生しますが、標準的なWebブラウザでは発生しません。
Examples
this.platform.pause.subscribe(async () => {
alert('Pause event detected');
});
resize
resize
イベントは、ブラウザウィンドウの寸法が変更されたときに発生します。これは、ブラウザーウィンドウが物理的にサイズ変更されている場合や、デバイスの向きが変わっている場合に発生します。
Examples
this.platform.resize.subscribe(async () => {
alert('Resize event detected');
});
resume
resume
イベントは、ネイティブプラットフォームがバックグラウンドからアプリケーションを引き出したときに発生します。このイベントは、Cordova/Capacitorアプリがバックグラウンドから出てきても、標準的なWebブラウザで起動しない場合に発生します。
Examples
this.platform.resume.subscribe(async () => {
alert('Resume event detected');
});