安卓AIDL进口 [英] android aidl import

问题描述

我试图导入android.content.Context到AIDL文件，但月食不承认它。

I'm trying to import android.content.Context to AIDL file but eclipse doesn't recognize it..

这是我的code：

package nsip.net;

import android.content.Context; // error couldn't find import for class ...

interface IMyContactsService{

void printToast(Context context, String text);

}

谁能帮我？

推荐答案

使用 android.content.Context 是行不通的，因为它没有实施 android.os.Parcelable 。

Using android.content.Context isn't going to work since it doesn't implement android.os.Parcelable.

不过 - FF你有一个类（ MyExampleParcelable 为例）要在一个AIDL接口传输（安培;真正实现 Parcelable ）创建一个 .aidl 文件， MyExampleParcelable.aidl 中这样写：

However - ff you have a class (MyExampleParcelable for instance) that you want to transfer in an AIDL interface (& that actually implements Parcelable) you create an .aidl file, MyExampleParcelable.aidl in which you write:

package the.package.where.the.class.is;

parcelable MyExampleParcelable;

---

现在，除非你拼命想要跨进程谈谈你应该考虑当地的服务。

修改（稍微有所帮助）：

---

Now, unless you desperately want to talk across processes you should consider local services.

Edit(slightly more helpful):

这是一个本地服务（即它仅用于自己的应用程序和进程内）？在这种情况下，它通常只是更好地执行粘合剂，并直接返回。

Is this a local service (i.e. it will only be used inside your own application & process)? In these cases it's usually just better to implement a binder and return that directly.

public class SomeService extends Service {
    ....
    ....
    public class SomeServiceBinder extends Binder {
        public SomeService getSomeService() {
            return SomeService.this;
        }
    }

    private final IBinder mBinder = new SomeServiceBinder();

    @Override
    public IBinder onBind(Intent intent) {
        return mBinder;
    }

    public void printToast(Context context, String text) {
        // Why are you even passing Context here? A Service can create Toasts by it self.
        ....
        ....
    }
    // And all other methods you want the caller to be able to invoke on
    // your service.
}

基本上，当活动已绑定到你的服务就会简单地把得到的的IBinder 到 SomeService.SomeServiceBinder ，呼叫 SomeService.SomeServiceBinder＃getSomeService（） - 和 嘭 ，访问正在运行的服务实例+，你可以在它的API调用的东西。

Basically, when the Activity has bound to your service it will simply cast the resulting IBinder to SomeService.SomeServiceBinder, call SomeService.SomeServiceBinder#getSomeService() - and bang, access to the running Service instance + you can call stuff in its API.

这篇关于安卓AIDL进口的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！