Android手电筒后台Service
功能是后台service控制手电的打开和关闭。
public class ToggleFlashService extends Service {
final String SMS_RECEIVED_STRING = "android.provider.Telephony.SMS_RECEIVED";
AudioManager audioManager;
int callState;
int flashDuration;
int flashInterval;
boolean isCameraInUse = false;
boolean isCameraOpen = false;
boolean isFlashOn = false;
Camera.Parameters params;
Intent serviceIntent;
TelephonyManager telephonyManager;
Timer timer;
TimerTask timerTask;
public boolean isCameraInUse() {
try {
if ((ToggleFlashSettings.camera == null) && (!this.isCameraOpen)) {
ToggleFlashSettings.camera = Camera.open();
this.params = ToggleFlashSettings.camera.getParameters();
this.isCameraOpen = true;
return false;
}
} catch (Exception localException) {
}
return true;
}
public void messageReceived() {
}
public IBinder onBind(Intent paramIntent) {
return null;
}
public void onCreate() {
this.telephonyManager = ((TelephonyManager) getSystemService("phone"));
this.audioManager = ((AudioManager) getSystemService("audio"));
this.callState = this.telephonyManager.getCallState();
this.flashDuration = ToggleFlashPrefs
.getCallFlashInterval(getApplicationContext());
this.flashInterval = ToggleFlashPrefs
.getCallFlashDuration(getApplicationContext());
super.onCreate();
}
public void onDestroy() {
Log.e("Toggle", "ToggleFlash Destroy");
try {
if (this.timer != null) {
this.timer.cancel();
this.timer = null;
}
if ((this.isFlashOn) && (ToggleFlashSettings.camera != null)) {
this.isFlashOn = false;
this.isCameraOpen = false;
this.params = ToggleFlashSettings.camera.getParameters();
List localList = this.params.getSupportedFlashModes();
if ((localList.contains("torch"))
|| (localList.contains("off"))
|| (localList.contains("on"))) {
this.params.setFlashMode("off");
ToggleFlashSettings.camera.setParameters(this.params);
}
ToggleFlashSettings.camera.release();
ToggleFlashSettings.camera = null;
}
} catch (Exception localException) {
if (ToggleFlashSettings.camera != null) {
ToggleFlashSettings.camera.release();
ToggleFlashSettings.camera = null;
}
localException.printStackTrace();
}
}
public int onStartCommand(Intent paramIntent, int paramInt1, int paramInt2) {
if (ToggleFlashSettings.camera != null) {
ToggleFlashSettings.camera.release();
ToggleFlashSettings.camera = null;
}
this.serviceIntent = paramIntent;
this.telephonyManager.listen(new PhoneStateListener() {
public void onCallStateChanged(int paramAnonymousInt,
String paramAnonymousString) {
switch (paramAnonymousInt) {
default:
ToggleFlashService.this.callState = 0;
break;
case 1:
ToggleFlashService.this.callState = 1;
break;
case 2:
ToggleFlashService.this.callState = 2;
break;
}
}
}, 32);
this.timer = new Timer();
this.timerTask = new TimerTask() {
public void run() {
ToggleFlashService.this.toggleFlash();
}
};
if (this.flashDuration == 0) {
this.timer.schedule(this.timerTask, this.flashInterval, 50L);
} else {
this.timer.schedule(this.timerTask, this.flashInterval,
this.flashDuration);
}
return super.onStartCommand(paramIntent, paramInt1, paramInt2);
}
public boolean stopService(Intent paramIntent) {
try {
if (this.timer != null) {
this.timer.cancel();
this.timer = null;
}
if ((this.isFlashOn) && (ToggleFlashSettings.camera != null)) {
this.isFlashOn = false;
this.isCameraOpen = false;
this.params = ToggleFlashSettings.camera.getParameters();
List localList = this.params.getSupportedFlashModes();
if ((localList.contains("torch"))
|| (localList.contains("off"))
|| (localList.contains("on"))) {
this.params.setFlashMode("off");
ToggleFlashSettings.camera.setParameters(this.params);
}
ToggleFlashSettings.camera.release();
ToggleFlashSettings.camera = null;
}
this.isCameraOpen = false;
this.isFlashOn = false;
if (ToggleFlashSettings.camera != null) {
ToggleFlashSettings.camera.release();
ToggleFlashSettings.camera = null;
}
if (this.serviceIntent != null) {
boolean bool = super.stopService(this.serviceIntent);
return bool;
}
} catch (Exception localException) {
localException.printStackTrace();
if (ToggleFlashSettings.camera != null) {
ToggleFlashSettings.camera.release();
ToggleFlashSettings.camera = null;
}
ToggleFlashSettings.camera = null;
}
return super.stopService(paramIntent);
}
public void toggleFlash() {
try {
this.isCameraInUse = isCameraInUse();
if (this.isCameraInUse) {
stopService(this.serviceIntent);
Log.e("ToggleFlashServer", "is isCameraInUse ");
return;
}
if (this.callState != 1) {
Log.e("ToggleFlashServer", "callState is 1 ");
return;
}
List localList = this.params.getSupportedFlashModes();
if (!this.isFlashOn) {
if ((localList.contains("torch"))
|| (localList.contains("off"))
|| (localList.contains("on"))) {
Log.e("ToggleFlashServer", "start torch.... ");
this.params.setFlashMode("torch");
if (ToggleFlashSettings.camera != null) {
ToggleFlashSettings.camera.setParameters(this.params);
ToggleFlashSettings.camera.startPreview();
}
}
this.isFlashOn = true;
return;
}
if ((localList.contains("torch")) || (localList.contains("off"))
|| (localList.contains("on"))) {
this.params.setFlashMode("off");
if (ToggleFlashSettings.camera != null) {
ToggleFlashSettings.camera.setParameters(this.params);
ToggleFlashSettings.camera.stopPreview();
}
}
this.isFlashOn = false;
stopService(this.serviceIntent);
} catch (Exception localException) {
localException.printStackTrace();
}
}
}
public class ToggleFlashPrefs {
public static final String CALL_FLASH_DURATION = "call_flash_duration";
public static final String CALL_FLASH_INTERVAL = "call_flash_interval";
public static final String MSG_FLASH_DURATION = "msg_flash_duration";
public static final String MSG_FLASH_INTERVAL = "msg_flash_interval";
public static final String SERVICE_STARTED = "service_started";
public static final String SET_ALARM_ENABLE = "set_alarm_enable";
public static final String SET_CALL_ENABLE = "set_call_enable";
public static final String SET_MESSAGE_ENABLE = "set_message_enable";
public static final String SET_NOTIFICATION_ENABLE = "set_notification_enable";
public static boolean getAlarmEnable(Context paramContext) {
return getSharedPreferences(paramContext).getBoolean(
"set_alarm_enable", false);
}
public static boolean getCallEnable(Context paramContext) {
return getSharedPreferences(paramContext).getBoolean("set_call_enable",
true);
}
public static int getCallFlashDuration(Context paramContext) {
return getSharedPreferences(paramContext).getInt("call_flash_duration",
250);
}
public static int getCallFlashInterval(Context paramContext) {
return getSharedPreferences(paramContext).getInt("call_flash_interval",
0);
}
public static int getMSGFlashDuration(Context paramContext) {
return getSharedPreferences(paramContext).getInt("msg_flash_duration",
250);
}
public static int getMSGFlashInterval(Context paramContext) {
return getSharedPreferences(paramContext).getInt("msg_flash_interval",
0);
}
public static boolean getMessageEnable(Context paramContext) {
return getSharedPreferences(paramContext).getBoolean(
"set_message_enable", true);
}
public static boolean getNotificationEnable(Context paramContext) {
return getSharedPreferences(paramContext).getBoolean(
"set_notification_enable", false);
}
public static boolean getServiceStarted(Context paramContext) {
return getSharedPreferences(paramContext).getBoolean("service_started",
false);
}
static SharedPreferences getSharedPreferences(Context paramContext) {
return PreferenceManager.getDefaultSharedPreferences(paramContext);
}
public static void setAlarmEnable(Context paramContext, boolean paramBoolean) {
SharedPreferences.Editor editor = getSharedPreferences(paramContext)
.edit();
editor.putBoolean("set_alarm_enable", paramBoolean);
editor.commit();
}
public static void setCallEnable(Context paramContext, boolean paramBoolean) {
SharedPreferences.Editor editor = getSharedPreferences(paramContext)
.edit();
editor.putBoolean("set_call_enable", paramBoolean);
editor.commit();
}
public static void setCallFlashDuration(Context paramContext, int paramInt) {
SharedPreferences.Editor editor = getSharedPreferences(paramContext)
.edit();
editor.putInt("call_flash_duration", paramInt);
editor.commit();
}
public static void setCallFlashInterval(Context paramContext, int paramInt) {
SharedPreferences.Editor editor = getSharedPreferences(paramContext)
.edit();
editor.putInt("call_flash_interval", paramInt);
editor.commit();
}
public static void setMSGFlashDuration(Context paramContext, int paramInt) {
SharedPreferences.Editor editor = getSharedPreferences(paramContext)
.edit();
editor.putInt("msg_flash_duration", paramInt);
editor.commit();
}
public static void setMSGFlashInterval(Context paramContext, int paramInt) {
SharedPreferences.Editor editor = getSharedPreferences(paramContext)
.edit();
editor.putInt("msg_flash_interval", paramInt);
editor.commit();
}
public static void setMessageEnable(Context paramContext,
boolean paramBoolean) {
SharedPreferences.Editor editor = getSharedPreferences(paramContext)
.edit();
editor.putBoolean("set_message_enable", paramBoolean);
editor.commit();
}
public static void setNotificationEnable(Context paramContext,
boolean paramBoolean) {
SharedPreferences.Editor editor = getSharedPreferences(paramContext)
.edit();
editor.putBoolean("set_notification_enable", paramBoolean);
editor.commit();
}
public static void setServiceStarted(Context paramContext,
boolean paramBoolean) {
SharedPreferences.Editor editor = getSharedPreferences(paramContext)
.edit();
editor.putBoolean("service_started", paramBoolean);
editor.commit();
}
}
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