从android中我们可以看到activity 是android 中展示在用户面前的操作载体,firefox也一样拥有相同类似的功能,接下来让我们看看activity在firefox的意义及用法,在firefox os 手机应用开发时我们需要不同的界面跳转时也一样需要activity进行相互交互,不像
安卓那样用java编写activity,firefox os 主要用html做指引javascript做控制,额,扯到一边去了,还是看怎么用吧。
首先和android一样需要在manifest中对activity做声明,android的是manifest.xml而firefox os 则是mabifest.webapp
{
// Other App Manifest related stuff
// Activity registration
"activities": {
// The name of the activity to handle (here "pick")
"pick": {
"href": "./pick.html",
"disposition": "inline",
"filters": {
"type": ["image/*","image/jpeg","image/png"]
},
"returnValue": true
}
}
}
其次是启动要跳转到的activity 即 Starting an activityvar activity = new MozActivity({
// Ask for the "pick" activity
name: "pick",
// Provide de data required by the filters of the activity
data: {
type: "image/jpeg"
}
});
activity.onsuccess = function() {
var picture = this.result;
console.log("A picture has been retrieve");
};
activity.onerror = function() {
console.log(this.error);
};
最后是你所启动的activity要执行什么样的操作
navigator.mozSetMessageHandler('activity', function(activityRequest) {
var option = activityRequest.source;
if (option.name === "pick") {
// Do something to handle the activity
...
// Send back the result
if (picture) {
activityRequest.postResult(picture);
} else {
activityRequest.postError("Unable to provide a picture");
}
}
});
从安卓到火狐就是这样过度的,本文转自5狐网,有对可能未来的新的手机操作系统firefox os有兴趣的童鞋可以到5狐网看看。
首先和android一样需要在manifest中对activity做声明,android的是manifest.xml而firefox os 则是mabifest.webapp
{
// Other App Manifest related stuff
// Activity registration
"activities": {
// The name of the activity to handle (here "pick")
"pick": {
"href": "./pick.html",
"disposition": "inline",
"filters": {
"type": ["image/*","image/jpeg","image/png"]
},
"returnValue": true
}
}
}
其次是启动要跳转到的activity 即 Starting an activityvar activity = new MozActivity({
// Ask for the "pick" activity
name: "pick",
// Provide de data required by the filters of the activity
data: {
type: "image/jpeg"
}
});
activity.onsuccess = function() {
var picture = this.result;
console.log("A picture has been retrieve");
};
activity.onerror = function() {
console.log(this.error);
};
最后是你所启动的activity要执行什么样的操作
navigator.mozSetMessageHandler('activity', function(activityRequest) {
var option = activityRequest.source;
if (option.name === "pick") {
// Do something to handle the activity
...
// Send back the result
if (picture) {
activityRequest.postResult(picture);
} else {
activityRequest.postError("Unable to provide a picture");
}
}
});

从安卓到火狐就是这样过度的,本文转自5狐网,有对可能未来的新的手机操作系统firefox os有兴趣的童鞋可以到5狐网看看。