新增LED設(shè)備--從上層到底層理解安卓架構(gòu)之Service篇

package com.android.server;import android.content.Context;import android.util.Slog;import android.app.ITestLedService;import android.content.BroadcastReceiver;import android.app.ActivityManager;import android.content.ComponentName;import android.content.Intent;import android.content.IntentFilter;import android.os.SystemProperties;import android.content.pm.PackageManager;import java.io.BufferedReader;import java.io.IOException;import java.io.DataOutputStream;import java.io.DataInputStream;import java.io.InputStreamReader;import java.text.SimpleDateFormat;import java.util.Date;

public class TestLedService extends ITestLedService.Stub {private final Context mContext;private boolean mFlag;private boolean mled2On = false;private int mFlashDelay = 1000;

public TestLedService(Context context) {super();mContext = context;
testledinit_native();

mFlag = true;if(mFlag){new Thread(new led2Flash()).start();}}

public void SetLed1(int on){setled1_native(on);}

public void SetLed2(int delay){mFlashDelay = delay;if(!mFlag && mFlashDelay != 0){new Thread(new led2Flash()).start();}if(delay == 0){mFlag = false;}}

class led2Flash implements Runnable {public void run(){while(true){Slog.i("TestLed_service", "led2 flash");if(mled2On){setled2_native(0);mled2On = false;}else{setled2_native(1);mled2On = true;}try{Thread.sleep(mFlashDelay);}catch(Exception e){e.printStackTrace();}if(!mFlag){break;}}}}private static native boolean testledinit_native();private static native void setled1_native(int val);private static native void setled2_native(int val);}

package android.app;

import android.app.ITestLedService;import android.util.Slog;import android.os.RemoteException;

public class TestLedManager {

private final ITestLedService mService;

public TestLedManager(ITestLedService mService) {this.mService = mService;}

public void SetLed1(int on){try {mService.SetLed1(on);} catch (RemoteException ex) {ex.printStackTrace();}}

public void SetLed2(int delay){try {mService.SetLed2(delay);} catch (RemoteException ex) {ex.printStackTrace();}}}

// Declare any non-default types here with import statements

interface ITestLedService {/*** Demonstrates some basic types that you can use as parameters* and return values in AIDL.*/void SetLed1(int on);void SetLed2(int delay);}

LOCAL_SRC_FILES += \……core/java/android/service/quicksettings/IQSTileService.aidl \core/java/android/app/ITestLedService.aidl \

import android.app.TestLedManager;import android.app.ITestLedService;

final class SystemServiceRegistry {……static {……registerService(Context.TestLed_SERVICE, TestLedManager.class,new CachedServiceFetcher<TestLedManager>() {@Overridepublic TestLedManager createService(ContextImpl ctx) {IBinder b = ServiceManager.getService(Context.TestLed_SERVICE);ITestLedService service = ITestLedService.Stub.asInterface(b);return new TestLedManager(service);}});

private void startOtherServices() {……TestLedService TestLed = new TestLedService(context);
ServiceManager.addService(Context.TestLed_SERVICE, TestLed);