我尝试过您之前尝试做的事情,将 phonegap 更新到 2.0.0 版及更高版本,最好的方法是使用插件。这是资产文件夹中 phonegap 上的 js。确保构造 id 为“nativecall”的 div 元素和一个示例按钮来检测它。一定要观看 LogCat 以检查错误消息。
window.echo = function(str, callback) {
cordova.exec(callback, function(err) {
callback('Nothing to echo.');
}, "Echo", "echo", [str]);
};
var app = {
// Application Constructor
initialize: function() {
this.bindEvents();
},
// Bind Event Listeners
//
// Bind any events that are required on startup. Common events are:
// 'load', 'deviceready', 'offline', and 'online'.
bindEvents: function() {
document.addEventListener('deviceready', this.onDeviceReady, false);
},
// deviceready Event Handler
//
// The scope of 'this' is the event. In order to call the 'receivedEvent'
// function, we must explicity call 'app.receivedEvent(...);'
onDeviceReady: function() {
app.receivedEvent('deviceready');
},
// Update DOM on a Received Event
receivedEvent: function() {
var abiter = $('#nativecall').html();
$("#abutton").click(function () {
window.echo(abiter, function(echoValue) {
alert(echoValue = abiter); // should alert true.
});
});
}
};
app.initialize();
在 src 上添加服务名称为“Echo”的新类方法。
package org.apache.cordova.plugin;
import org.apache.cordova.api.CallbackContext;
import org.apache.cordova.plugin.AndroidActivities;
import org.apache.cordova.api.CordovaPlugin;
import org.json.JSONArray;
import org.json.JSONException;
/**
* This class echoes a string called from JavaScript.
*/
public class Echo extends CordovaPlugin {
@Override
public boolean execute(String action, JSONArray args, CallbackContext callbackContext) throws JSONException {
if (action.equals("echo")) {
String message = args.getString(0);
new AndroidPublicFunction(message); //call function from AndroidActivities
this.echo(message, callbackContext);
return true;
}
return false;
}
private void echo(String message, CallbackContext callbackContext) {
if (message != null && message.length() > 0) {
callbackContext.success(message);
} else {
callbackContext.error("Expected one non-empty string argument.");
}
}
}