問題描述

我在我的應用程序中使用 sencha-touch 2.0 和 phonegap 2.0.0 來檢索用戶的位置.在我的本地主機上運行時，一切正常.但是，當將 .apk 加載到我的 android 15 api 設備(使用 eclipse 和 adt 插件)時，每次調用 getCurrentLocation 或 watchPosition 都不會返回...

I'm using sencha-touch 2.0 and phonegap 2.0.0 in my app to retrieve user's location. When runing on my locahost, everything works just fine. However, when loading the .apk to my android 15 api's device (using eclipse and the adt plugin), every call to getCurrentLocation or watchPosition never returns...

這是我的代碼:

geoOn: function(){
    var geoReady = navigator.geolocation || undefined;

    var onSuccess = function(position){
            Top5.app.alert('Geolocation success '+String(position.coords.latitude) + ' ' + String(position.coords.longitude),'Geolocation');
            var scope = Ext.getCmp('nestedList');
            scope.updateDistance(position.coords);
    };

    var onFailure = function(error){Top5.app.alert('Geolocation failed: '+String(error.code) + ' '+String(error.message),'Geolocation');};
    if (geoReady) {
        this.watchId = navigator.geolocation.watchPosition(onSuccess ,onFailure,{timeout:6000,maximumAge: 3000,enableHighAccuracy: true});    
    }
    else{
        Ext.device.Geolocation.watchPosition({
                 frequency: 3000, // Update every 3 seconds
                 callback: function(position) {
                        this.updateDistance(position.coords);
                 },
                 failure: function() {
                   console.log('Geolocation Failure!');
                 },
                 scope:this
        });
    }
 },
 geoGet: function(){
     var geoReady = navigator.geolocation || undefined;
     if (geoReady) {

         var onSuccess = function(position){
             Top5.app.alert('Geolocation successful!!!');
             var scope = Ext.getCmp('nestedList');
             scope.updateDistance(position.coords);          
         };
         var onFailure = function(error){Top5.app.alert('Geolocation failed: '+String(error.code) + ' '+String(error.message),'Geolocation');};
         navigator.geolocation.getCurrentPosition(onSuccess,onFailure);
     }
     else{}
 },
 geoOff:function(){

     var geoReady = navigator.geolocation || undefined;
     if (geoReady) {
         navigator.geolocation.clearWatch(this.watchId);
         this.watchId = null;
     }
     else{
         Ext.device.Geolocation.clearWatch();
     }

 },
 updateDistance:function(coords){
     Top5.app.alert('updateDist','');
     var scope = Ext.getCmp('nestedList');
     var lat = coords.latitude,lon = coords.longitude;
     var store = scope.getStore();
     var i,record;
     for(i = 0; i < store.data.all.length; i++)
     {
         record = store.data.all[i];
         if(record.data.locationX){
            record.set('distance',Top5.app.getDistance(record.data.locationX,record.data.locationY,lat,lon).toFixed(3));
         }   
     }
}

更新:所以我走出了我的大樓，它奏效了......我需要更頻繁地外出.
但是，當我禁用 gps 時，我認為 geoLocation 會使用 wifi 連接找到我的位置 - 但它失敗了(我設置 enableHighAccuracy: false).這是為什么呢?

UPDATE: So I walked out of my building and it worked... I need to go outside more often.
However, when I'm disabling the gps, I thought geoLocation will find my location using wifi connection - but it failes (I'm setting enableHighAccuracy: false). Why is that?

更新:讓我重新表述我的問題:navigator.geolocation.watchPosition 是否可以同時使用 GPS 信號和 wifi/g3 信號?如何僅使用互聯網連接檢測用戶位置?目前，我的代碼僅適用于 GPS，當禁用該選項或信號被阻止時，地理定位不起作用.

UPDATE: Let me rephrase my question: Does navigator.geolocation.watchPosition suppose to work both with GPS signal and wifi/g3 signals? How can I detect user location using internet connection only? currently, my code is working only with GPS, and when that option disabled or signal is blocked, geolocation isn't working.

推薦答案

我已經設法解決了.... 但是，我不知道實際解決了什么問題.我所做的只是改變我模型的一個結構.任何人都可以看到與地理位置的聯系嗎?

I've managed to work it out.... However , I have no idea what actually solved it. All I've done is to change one of my model's structure. Can anyone see the connection to geolocation?

這篇關于phonegap 地理位置總是在超時時失敗的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！