Android 7.0 添加自定义系统服务

一.添加自定义服务代码

1.修改系统配置, 增加自定义目录编译

build\core\pathmap.mk

......

FRAMEWORKS_BASE_SUBDIRS += \

$(addsuffix /java, \

olc/security \

)

......

2.添加 aidl接口

frameworks\base\olc\security\java\com\olc\security\aidl\ISecurityServer.aidl

package com.olc.security.aidl;

interface ISecurityServer {

void startLockAppSevice();

void stopLockAppSevice();

}

3.添加aidl接口的实现 SecurityServer.java

frameworks\base\olc\security\java\com\olc\security\aidl\SecurityServer.java

package com.olc.security.aidl;

public class SecurityServer extends ISecurityServer.Stub{

public SecurityServer(Context context) {

super();

}

public void startLockAppSevice() {

......

}

public void stopLockAppSevice() {

.....

}

}

4.封装对外接口 SecurityManager.java

frameworks\base\olc\security\java\com\olc\security\SecurityManager.java

package com.olc.security;

import com.olc.security.aidl.ISecurityServer;

import android.os.RemoteException;

public class SecurityManager {

private final ISecurityServer mService;

public SecurityManager(ISecurityServer service) {

mService = service;

}

public void startLockAppSevice(){

try {

mService.startLockAppSevice();

} catch (RemoteException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

public void stopLockAppSevice(){

try {

mService.stopLockAppSevice();

} catch (RemoteException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

5.注册自定义服务

frameworks\base\core\java\android\app\SystemServiceRegistry.java

static{

......

//wpx security

registerService("olc_service_security", com.olc.security.SecurityManager.class,

new CachedServiceFetcher<com.olc.security.SecurityManager>() {

@Override

public com.olc.security.SecurityManager createService(ContextImpl ctx) {

IBinder b = ServiceManager.getService("olc_service_security");

return new com.olc.security.SecurityManager(com.olc.security.aidl.ISecurityServer.Stub.asInterface(b));

}

});

}

6.在系统启动过程中添加自定义服务

frameworks\base\services\java\com\android\server\SystemServer.java

// Start services.

try {

Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "StartServices");

startBootstrapServices();

startCoreServices();

startOtherServices();

try {

com.olc.security.aidl.SecurityServer Security = new com.olc.security.aidl.SecurityServer(mContext);

ServiceManager.addService("olc_service_security", Security);

} catch (Throwable e) {

Log.e(TAG, "Failure starting olc_service_security", e);

}

} catch (Throwable ex) {

Slog.e("System", "******************************************");

Slog.e("System", "************ Failure starting system services", ex);

throw ex;

} finally {

Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);

}

7.自定义服务声明, 赋权限

system\sepolicy\service_contexts 放最后一行一定要多添加一空行

......

olc_service_security u:object_r:olc_service_security_service:s0

.......

system\sepolicy\service.te 放最后一行一定要多添加一空行

......

type olc_service_security_service,app_api_service, system_server_service, service_manager_type;

......

8.调用自定义服务

SecurityManager securityManager = (SecurityManager)getSystemService("olc_service_security");

securityManager.startLockAppS