我正在使用Njdhv的ExtJS-GeoLocation库。在样本用法上，他定义了一个打印当前地理位置值的函数;
//'MyApp.view.dash.DashController' where function defined.
refreshGeoLocation : function( refresh ) {
var className = '',
geo;
if (Ext.isClassic) {
className = 'MyApp.utils.OoGeolocation';
} else if (Ext.isModern) {
className = 'Ext.util.Geolocation';
}
if (className) {
geo = Ext.create(className, {
autoUpdate: false,
listeners: {
locationupdate: function (geo) {
console.log(geo);
console.log('Wait for it! Geolocation info is coming up!');
Ext.Msg.alert('Success', `New latitude: ${geo.getLatitude()} <br>New Longitude: ${geo.getLongitude()}`);
console.log(`New latitude: ${geo.getLatitude()} New Longitude: ${geo.getLongitude()}`);
},
locationerror: function (geo, bTimeout, bPermissionDenied, bLocationUnavailable, message) {
if (bTimeout) {
Ext.Msg.alert('Erroe', 'Timeout occurred.');
} else {
Ext.Msg.alert('Erroe', 'Error occurred');
}
}
}
});
geo.updateLocation();
} else {
Ext.Msg.alert('Erroe', 'No class found');
}
}
如何将这些印刷值传递到proxy url到LATITUDE和LONGITUDE？
Ext.define('MyApp.view.dash.WeatherData', {
extend: 'Ext.DataView',
xtype: 'weatherData',
requires: [
'Ext.data.reader.Json',
'MyApp.utils.OoGeolocation', //The library using for Geolocation
'MyApp.view.dash.DashController' //Where refreshGeolocation function defined
],
baseCls: 'weather-panel',
border: false,
store: {
fields: [
{
name: 'summary',
mapping: 'weather[0].main'
},
{
name: 'description',
mapping: 'weather[0].description'
}
],
proxy: {
type: 'jsonp',
// url: 'http://api.openweathermap.org/data/2.5/weather?lat=36.90&lon=36.64&units=metric&appid=9b59049894d42af608baf69f869b9ace',
url: 'http://api.openweathermap.org/data/2.5/weather?lat=' + LATITUDE +'&lon=' + LONGITUDE +'&units=metric&appid=9b5904989',
reader: {
type: 'json'
}
},
autoLoad: true
},
itemTpl: '<div class="weather-image-container"><img src="../../../resources/img/ico_cloud.png" alt="{summary}"/></div>' +
'<div class="weather-details-container">' +
'<div>{main.temp}°</div>' +
'<div>{summary}</div>' +
'<div>{description}</div>' +
'</div>'
});
更新<！/强> 亲爱的@Njdhv这里是更新的片段;
Singleton类
Ext.define("MyApp.view.weather.WeatherUtil", {
singleton: true,
alternateClassName: 'weatherutil',
config: {
latitude: 0,
longitude: 0
},
constructor: function (config) {
this.initConfig(config);
}
});
和DataView类
Ext.define('MyApp.view.weather.WeatherData', {
extend: 'Ext.DataView',
xtype: 'weatherdata',
requires: [
'Ext.data.reader.Json',
'MyApp.utils.OoGeolocation', //Geolocation Library
'MyApp.view.dash.WeatherUtil' //Singleton class
],
...
proxy: {
type: 'jsonp',
url: `http://api.openweathermap.org/data/2.5/weather?lat=${weatherutil.getLatitude()}&lon=${weatherutil.getLongitude()}&units=metric&appid=9b590`,
reader: {
type: 'json'
}
},
这里是DashController for function of button;
refreshGeoLocation: function (button) {
var store = button.up('#weatherView').down('weatherdata').getStore();
store.load({
url: `http://api.openweathermap.org/data/2.5/weather?lat=${weatherutil.getLatitude()}&lon=${weatherutil.getLongitude()}&units=metric&appid=9b59049894d42af608baf69f869b9ace`,
});
button.setDisabled(false);
},
getGeolocation : function( refresh ) {
var className = '',
geo;
if (Ext.isClassic) {
className = 'MyApp.utils.OoGeolocation';
} else if (Ext.isModern) {
className = 'Ext.util.Geolocation';
}
if (className) {
geo = Ext.create(className, {
autoUpdate: false,
listeners: {
locationupdate: function (geo) {
console.log(geo);
console.log('Wait for it! Geolocation info is coming up!');
//Ext.Msg.alert('Success', `New latitude: ${geo.getLatitude()} <br>New Longitude: ${geo.getLongitude()}`);
console.log(`New latitude: ${geo.getLatitude()} New Longitude: ${geo.getLongitude()}`);
},
locationerror: function (geo, bTimeout, bPermissionDenied, bLocationUnavailable, message) {
if (bTimeout) {
Ext.Msg.alert('Error', 'Timeout occurred.');
} else {
Ext.Msg.alert('Error', 'Error occurred');
}
}
}
});
geo.updateLocation();
} else {
Ext.Msg.alert('Error', 'No class found');
}
},
和WeatherView在哪里创建按钮;
Ext.define('MyApp.view.dash.WeatherView', {
extend: 'Ext.panel.Panel',
xtype: 'weatherview',
requires: [
'MyApp.view.weather.WeatherData',
'MyApp.view.weather.WeatherWindow',
'MyApp.view.weather.WeatherUtil'
],
closable: false,
resizable: false,
title: 'Weather',
itemId: 'weatherView',
iconCls: 'x-fa fa-bell',
height: 400,
cls: 'quick-graph-panel shadow',
layout: 'fit',
tools: [
{
type: 'refresh',
handler: 'refreshGeoLocation'
// listeners: {
// click: 'refreshGeoLocation'
// }
},
{
type: 'gear',
handler: 'weatherWindow'
}
],
// html: 'Welcome to our weather app. Click on refresh to get the latest weather information',
items: [{
xtype: 'weatherdata'
}],
listeners: {
beforerender: 'getGeolocation'
}
});
答案 0 :(得分：1)
为此，您需要在应用程序中存储latitude和longitude。您可以使用 ExtJS 的singleton。只要您需要，此singleton可在整个应用程序中访问。
我已更新我的ExtJS-GeoLocation库，请参阅。
代码段
Singleton类示例
Ext.define("GeoLocation.util.CommonUtility", {
singleton: true,
alternateClassName: 'commonutility',
config: {
latitude: 0,
longitude: 0
},
constructor: function (config) {
this.initConfig(config);
}
});
带有商店的数据视图示例
/**
* This class is the main view for the application. It is specified in app.js as the
* "mainView" property. That setting automatically applies the "viewport"
* plugin causing this view to become the body element (i.e., the viewport).
*
* TODO - Replace this content of this view to suite the needs of your application.
*/
Ext.define('GeoLocation.view.main.Main', {
extend: 'Ext.tab.Panel',
xtype: 'app-main',
requires: [
'Ext.plugin.Viewport',
'Ext.window.MessageBox',
'GeoLocation.view.main.MainController',
'GeoLocation.util.Geolocation'
],
controller: 'main',
ui: 'navigation',
//tabBarHeaderPosition: 1,
titleRotation: 0,
tabRotation: 0,
activeTab: 0,
items: [{
title: 'Geo Location',
iconCls: 'x-fa fa-map',
itemId: 'geoLocation',
items: [{
xtype: 'button',
text: 'Check weather',
handler: 'onWeatherButtonClick'
}, {
xtype: 'dataview',
store: {
fields: [{
name: 'summary',
mapping: 'weather[0].main'
}, {
name: 'description',
mapping: 'weather[0].description'
}],
proxy: {
type: 'jsonp',
url: `http://api.openweathermap.org/data/2.5/weather?lat=${commonutility.getLatitude()}&lon=${commonutility.getLongitude()}&units=metric&appid=9b59049894d42af608baf69f869b9ace`,
reader: {
type: 'json'
}
},
autoLoad: true
},
itemTpl: '<div class="weather-image-container"><img src="../../../resources/img/ico_cloud.png" alt="{summary}"/></div>' +
'<div class="weather-details-container">' +
'<div>{main.temp}°</div>' +
'<div>{summary}</div>' +
'<div>{description}</div>' +
'</div>'
}]
}],
listeners: {
beforerender: 'onMainViewRender'
}
});