/system/bin/service分析与使用

service可以列出android使用的所有服务,还可以通过Binder与实现了aidl的服务通信

mmm frameworks/native/cmds/service编译出来的service

root@tcc893x:/ # /system/bin/service

Usage: service [-h|-?]

service list

service check SERVICE

service call SERVICE CODE [i32 INT | s16 STR] ...

Options:

i32: Write the integer INT into the send parcel.

s16: Write the UTF-16 string STR into the send parcel.

1) list的使用

root@tcc893x:/ # service list

Found 92 services:

0 goodbye: []

1 hello: []

2 AutoService: [com.semisky.midLevel.aidl.IAutoIPCService]

3 McuService: [com.semisky.midLevel.aidl.IMcuService]

4 KeyEventService: [com.semisky.midLevel.aidl.IKeyEventService]

5 RadioService: [com.semisky.midLevel.aidl.IRadioService]

6 CarInfoService: [com.semisky.midLevel.aidl.ICarInfoService]

7 sip: [android.net.sip.ISipService]

8 phone: [com.android.internal.telephony.ITelephony]

2)call的使用

调用服务定义的方法service call CarInfoService ４ i32 7，将会执行CarInfoService.test(７)，其中４就是代表 void test(int code)

aidl文件在eclipse里面会自动生产java文件,名字和aidl相同。

每个方法自动对于一个code,列如ICarInfoService.aidl里面的test的方法

/*

*ICarInfoService.aidl

*/

interface ICarInfoService {

void requestWaitRsgInit(IServiceCallBack serviceCallBack,String packageName,int grpId, int subId, in byte[] reqData);

　void observer(IServiceCallBack serviceCallBack,String packageName,int grpId, int subId);

void unregisterListener(IServiceCallBack serviceCallBack,String packageName);

void test(int code);

}

eclipse自动给test()分配 android.os.IBinder.FIRST_CALL_TRANSACTION + 3 = 4

static final int TRANSACTION_requestWaitRsgInit = (android.os.IBinder.FIRST_CALL_TRANSACTION + 0);

static final int TRANSACTION_observer = (android.os.IBinder.FIRST_CALL_TRANSACTION + 1);

static final int TRANSACTION_unregisterListener = (android.os.IBinder.FIRST_CALL_TRANSACTION + 2);

static final int TRANSACTION_test = (android.os.IBinder.FIRST_CALL_TRANSACTION + 3);