Location (Flutter Package of the Week)YouTube↗  IA↗(long shot)
Science & Technology  83.3K views 2.9K likes 17 dislikes   17 Dec 2020
Flutter 631K subscribers United States YouTube↗


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[Flutter]
[今週のパッケージ]
Pacchetto della settimana
[Location]
Location
あなたの位置は？
In che parte del mondo vi trovate?
Flutterアプリで デバイスの 位置情報を知る必要がある場合
Se credete che la vostra app Flutter necessiti sapere l'area geografica del dispositivo che si usa,
Locationパッケージが最適です
il pacchetto <i>location</i> è per voi.
Locationパッケージで提供される locationクラスで
Il pacchetto <i>location</i> offre la classe di localizzazione,
デバイスの現在位置情報を 取得できると同時に
che si può usare per ottenere l'attuale posizione geografica del dispositivo,
変化した位置情報も取得できます
ed anche ascoltare i cambi.
位置情報を取得する前に
Ma prima di ottenere la posizione,
デバイスの位置情報サービスが 有効になっていて
ci si deve assicurare che il servizio di geolocalizzazione
アプリの位置情報アクセスを ユーザーが許可している必要がありますが
sia attivo nel dispositivo e che l'utente abbia dato i permessi all'app
Locationを使えば解決です
per accedere alla posizione. Per fortuna, <i>location</i> offre dei metodi per questo.
まず <i>serviceEnabled</i>を確認し 位置情報サービスの有効化を確かめます
Primo, dovete assicurarvi che il servizio <i>location</i> sia attivo controllando <i>serviceEnabled</i>.
有効でなければ <i>requestService</i>で ユーザーに有効化を求めます
Se non è attivo, si può usare<i> requestService</i> per chiedere all'utente
次に デバイスの位置情報取得に対し 許可を求めます
di attivarlo. Poi, si deve chiedere il permesso per la localizzazione del dispositivo.
この手順と同様に
Similmente all'ultimo passo,
<i>hasPermission</i>を使って 現在の許可を確認し
si può controllare i permessi correnti usando <i>hasPermission</i>
<i>requestPermission</i>を使って アクセスを要求することも可能です
e richiedere l'accesso usando <i>requestPermission</i>.
アクセスできたら<i> getLocation</i>を呼び出すだけです
Una volta dentro, è giusto questione di chiamare <i>getLocation</i>.
位置データオブジェクトには
I dati di <i>location</i> contengono molti dati utili
デバイスの位置情報に関する 有益なデータが多数が含まれています
sulla posizione del dispositivo,
例えば 緯度と経度、標高、 進行方向、速度などです
incluso latitudine e longitudine, altitudine, direzione e velocità.
このデータを使用して 地図表示や距離計算などを行えます
Si possono usare questi dati per mostrare mappe, calcolare distanze, e altro.
さらに <i>onLocationChanged</i>を使うと
In più, si possono ascoltare i cambi
デバイスの位置情報の変化を待機できます
nella posizione del dispositivo usando <i>onLocationChanged</i>.
こうすると 位置情報を 経時的に追跡できます
Questo permette tracciare la posizione nel tempo.
詳細や例 価値あるユースケースを知るには
Per altri dettagli, esempi, e casi interessanti di uso,
pub.devから Locationパッケージをご覧ください
controllate il pacchetto<i> location</i> su <i>pub.dev</i>.
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