android:process=":remote"

本文深入探讨了在Android应用中如何通过配置manifest文件中的<service>元素的android:process属性来指定Service运行的进程,解释了使用':remote'与'remote'的区别,并通过实例演示了Service在不同进程中的运行情况。

摘要生成于 C知道 ,由 DeepSeek-R1 满血版支持, 前往体验 >

资料一

http://developer.android.com/intl/zh-CN/reference/android/app/Service.html

If we want to make this service run in a remote process (instead of the standard one for its .apk), we can use android:process in its manifest tag to specify one:

<service android:name=".app.MessengerService"
        android:process=":remote" />

Note that the name "remote" chosen here is arbitrary, and you can use other names if you want additional processes. The ':' prefix appends the name to your package's standard process name.(是不是这个remote 字符 都是没影响的

资料二

http://developer.android.com/intl/zh-CN/guide/topics/manifest/service-element.html

android:process
The name of the process where the service is to run. Normally, all components of an application run in the default process created for the application. It has the same name as the application package. The<application> element's process attribute can set a different default for all components. But component can override the default with its own process attribute, allowing you to spread your application across multiple processes.

If the name assigned to this attribute begins with a colon (':'), a new process, private to the application, is created when it's needed and the service runs in that process. If the process name begins with a lowercase character, the service will run in a global process of that name, provided that it has permission to do so. This allows components in different applications to share a process, reducing resource usage.代表在应用程序里,当需要该service时,会自动创建新的进程。而如果是android:process="remote",没有“:”分号的,则创建全局进程,不同的应用程序共享该进程。



可能大家看了还是不多明白在此我用个小例子为大家解释


Eg、一   

当设置为如下是

  <service android:name=".MessengerService"
              android:process=":remote"
            ></service>

我们可以从DDMS中看到


在MessengerService中 的pid是新的一个 (484) 不同于 main 的478



请看好多了一个进程。(pid就代表一个进程。 )


Eg、二

当在清单中声明的是

 <service android:name=".MessengerService"
             
            ></service>



在activity和service在同一个进程中关于这个请详细参考 (他们都是在346中)

Service详解(二)





有什么问题请指教,谢谢!



源码地址: http://csdn-qq282133-demo.googlecode.com/svn/trunk/ServiceTest2




以下是转载的:

这里的android:process=":remote",一开始我没有添加的,在同一个程序里使用IPC,即同一个程序作为客户端/服务器端,结果运行mRemoteService = IMyService.Stub.asInterface(service);时提示空指针异常。观察了人家的在不同程序里进行IPC的代码,也是没有这个android:process=":remote"的。后来在官方文档http://androidappdocs.appspot.com/guide/topics/manifest/service-element.html里了解到(留意第二段文字):
android:process
The name of the process where the service is to run. Normally, all components of an application run in the default process created for the application. It has the same name as the application package. The <application> element's process attribute can set a different default for all components. But component can override the default with its own process attribute, allowing you to spread your application across multiple processes.
 
If the name assigned to this attribute begins with a colon (':'), a new process, private to the application, is created when it's needed and the service runs in that process. If the process name begins with a lowercase character, the service will run in a global process of that name, provided that it has permission to do so. This allows components in different applications to share a process, reducing resource usage.
 也就是说android:process=":remote",代表在应用程序里,当需要该service时,会自动创建新的进程。而如果是android:process="remote",没有“:”分号的,则创建全局进程,不同的应用程序共享该进程。




切换到Android文件模式,打开AndroidManifest.xml,在application标签下写入 <!--百度定位AK--> <meta-data android:name="com.baidu.lbsapi.API_KEY" android:value="WpVg5eIh4kYWPHtPjG3arHIf6bGEn49s" /> 1 2 3 4 注意这个value里面的值是你自己的应用的,你用我的是没用的。 然后放入定位服务 <!--百度定位服务 这个服务也是放在application标签下的--> <service android:name="com.baidu.location.f" android:enabled="true" android:process=":remote" /> 1 2 3 4 5 最后放入权限 <!--以下权限与application标签是平级的--> <!-- 这个权限用于进行网络定位--> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> <!-- 这个权限用于访问GPS定位--> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <!-- 用于访问wifi网络信息,wifi信息会用于进行网络定位--> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> <!-- 获取运营商信息,用于支持提供运营商信息相关的接口--> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <!-- 这个权限用于获取wifi的获取权限,wifi信息会用来进行网络定位--> <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" /> <!-- 写入扩展存储,向扩展卡写入数据,用于写入离线定位数据--> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <!-- 访问网络,网络定位需要上网--> <uses-permission android:name="android.permission.INTERNET" />
03-30
评论
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值