android添加系统服务

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1 添加fake.aidl文件

package android.app;interface IFakeManager{    int getValue();    void setValue(int value);}

2 在frameworks/base/Android.mk文件中的LOCAL_SRC_FILES增加aidl的声明

@@ -63,6 +63,7 @@ LOCAL_SRC_FILES += \
core/java/android/accounts/IAccountManagerResponse.aidl \
core/java/android/accounts/IAccountAuthenticator.aidl \
core/java/android/accounts/IAccountAuthenticatorResponse.aidl \
+ core/java/android/app/IFakeManager.aidl \
core/java/android/app/IActivityContainer.aidl \
core/java/android/app/IActivityContainerCallback.aidl \
core/java/android/app/IActivityController.aidl \

3 添加FakeManager.java

package android.app;import android.os.Handler;import android.os.RemoteException;import android.util.Log;public class FakeManager{        public static final String TAG = "FakeManager";        IFakeManager mService;        Handler mHandler;        public FakeManager(IFakeManager service, Handler handler) {                mService = service;                mHandler = handler;        }        public int getValue(){            try {                return mService.getValue();            } catch (RemoteException e) {                Log.e(TAG, "[getValue] RemoteException");            }            return -1;        }        public void setValue(int value) {            try {                mService.setValue(value);            } catch (RemoteException e) {                Log.e(TAG, "[setValue] RemoteException");            }        }}

4 添加服务java文件FakeService.java

package com.android.server;import android.app.IFakeManager;import android.util.Log;import android.content.Context;public class FakeService extends IFakeManager.Stub{    private static final String TAG = "FakeService";    private Context mContext;    int value;    public FakeService(Context context){        mContext = context;    }    public int getValue() {        Log.d(TAG,"[getValue] name : "+value);        return this.value;    }    public void setValue(int value) {        Log.d(TAG,"[setValue] "+ value);        this.value = value;    }}

5 更改frameworks/base/services/java/com/android/server/SystemServer.java

@@ -1061,6 +1061,14 @@ public final class SystemServer {
} catch (Throwable e) {
reportWtf("making Display Manager Service ready", e);
}
+
+ try {
+ Slog.i(TAG, "FakeManager Service");
+ FakeService fakeService = new FakeService(context);
+ ServiceManager.addService(Context.FAKE_SERVICE, fakeService);
+ } catch (Throwable e) {
+ reportWtf("starting devInfo Service", e);
+ }

6 更改frameworks/base/core/java/android/app/ContextImpl.java

@@ -768,6 +768,14 @@ class ContextImpl extends Context {
IBinder b = ServiceManager.getService(APPWIDGET_SERVICE);
return new AppWidgetManager(ctx, IAppWidgetService.Stub.asInterface(b));
}});
+
+ registerService(FAKE_SERVICE, new ServiceFetcher() {
+ public Object createService(ContextImpl ctx) {
+ IBinder b = ServiceManager.getService(FAKE_SERVICE);
+ IFakeManager service = IFakeManager.Stub.asInterface(b);
+ return new FakeManager(service, ctx.mMainThread.getHandler());
+ }
+ });
}

7 更改frameworks/base/core/java/android/content/Context.java

@@ -67,6 +67,7 @@ import java.lang.annotation.RetentionPolicy;
* broadcasting and receiving intents, etc.
*/
public abstract class Context {
+ public static final String FAKE_SERVICE = "fake_service";
/**
* File creation mode: the default mode, where the created file can only
* be accessed by the calling application (or all applications sharing the

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