在这里，我正在创建一个应用程序以在收到短信和收到来电时启动闪存。闪光灯正在接收短信，但不能通话，为什么？任何人都可以帮忙吗？很多天以来，我一直坚持这一点。在此先感谢，我的代码如下。Flash 只在接收短信时执行，而不是在接听电话时执行。期待您的指导。当我对此进行搜索时，我只得到了创建自己的应用程序的类和方法。要求解释
public class SMSReceiver extends BroadcastReceiver {
Boolean call;
private Camera camera;
int count;
long delaytime;
Editor editor;
String flashtype;
private boolean hasFlash;
private boolean isFlashOn;
private boolean isFlashblinking;
private boolean mActive;
private Handler mHander;
private final Runnable mRunnable;
private boolean mSwap;
private Context mcontext;
AudioManager myAudioManager;
String noofblinks;
int numbofblink;
Parameters params;
SharedPreferences pref;
StringBuilder result;
Boolean ring;
Boolean silent;
Boolean sms;
String timetoblink;
Boolean vibrate;
public class PhoneListener extends PhoneStateListener {
private Context context;
public PhoneListener(Context c) {
Log.i("CallRecorder", "PhoneListener constructor");
this.context = c;
}
public void onCallStateChanged(int state, String incomingNumber) {
switch (state) {
case 0:
try {
SMSReceiver.this.mHander
.removeCallbacks(SMSReceiver.this.mRunnable);
if (SMSReceiver.this.camera != null) {
SMSReceiver.this.camera.release();
}
} catch (Exception e) {
try {
SMSReceiver.this.camera.release();
} catch (Exception e2) {
}
}
case 1:
try {
if (SMSReceiver.this.call.booleanValue()) {
if (SMSReceiver.this.myAudioManager.getRingerMode() == 0
&& SMSReceiver.this.silent.booleanValue()) {
SMSReceiver.this.flash();
}
if (SMSReceiver.this.myAudioManager.getRingerMode() == 1
&& SMSReceiver.this.vibrate.booleanValue()) {
SMSReceiver.this.flash();
}
if (SMSReceiver.this.myAudioManager.getRingerMode() == 2
&& SMSReceiver.this.ring.booleanValue()) {
SMSReceiver.this.flash();
}
}
} catch (Exception e3) {
}
case 2:
try {
SMSReceiver.this.mHander
.removeCallbacks(SMSReceiver.this.mRunnable);
if (SMSReceiver.this.camera != null) {
SMSReceiver.this.camera.release();
}
} catch (Exception e4) {
try {
SMSReceiver.this.camera.release();
} catch (Exception e5) {
}
}
default:
}
}
}
public SMSReceiver() {
this.mHander = new Handler();
this.mActive = false;
this.mSwap = true;
this.isFlashblinking = true;
this.count = 0;
this.mRunnable = new Runnable() {
@Override
// TODO Auto-generated method stub
public void run() {
try {
SMSReceiver sMSReceiver = SMSReceiver.this;
sMSReceiver.count++;
} catch (Exception e) {
}
if (SMSReceiver.this.mActive) {
if (SMSReceiver.this.count >= SMSReceiver.this.numbofblink * 2) {
try {
SMSReceiver.this.mHander
.removeCallbacks(SMSReceiver.this.mRunnable);
SMSReceiver.this.camera.release();
} catch (Exception e2) {
}
}
if (SMSReceiver.this.isFlashOn) {
SMSReceiver.this.turnOffFlash();
} else {
SMSReceiver.this.turnOnFlash();
}
try {
SMSReceiver.this.mHander.postDelayed(
SMSReceiver.this.mRunnable,
SMSReceiver.this.delaytime);
} catch (Exception e3) {
}
}
}
};
}
public void onReceive(Context context, Intent intent) {
try {
this.mcontext = context;
this.count = 0;
try {
this.pref = PreferenceManager
.getDefaultSharedPreferences(this.mcontext);
this.editor = this.pref.edit();
this.call = Boolean.valueOf(this.pref.getBoolean("call", true));
this.sms = Boolean.valueOf(this.pref.getBoolean("sms", true));
this.timetoblink = this.pref.getString("blinktime", "200");
this.noofblinks = this.pref.getString("noofblinks", "5");
this.ring = Boolean.valueOf(this.pref.getBoolean("ring", true));
this.vibrate = Boolean.valueOf(this.pref.getBoolean("vibrate",
true));
this.silent = Boolean.valueOf(this.pref.getBoolean("silent",
true));
this.flashtype = this.pref.getString("flashtype", "1");
this.delaytime = Long.parseLong(this.timetoblink);
this.numbofblink = Integer.parseInt(this.noofblinks);
this.myAudioManager = (AudioManager) this.mcontext
.getSystemService("audio");
} catch (Exception e) {
}
((TelephonyManager) this.mcontext.getSystemService("phone"))
.listen(new PhoneListener(context), 32);
} catch (Exception e2) {
}
}
public void flash() {
try {
this.hasFlash = this.mcontext.getPackageManager().hasSystemFeature(
"android.hardware.camera.flash");
if (this.hasFlash) {
getCamera();
startStrobe();
return;
}
AlertDialog alert = new Builder(this.mcontext).create();
alert.setTitle("Error");
alert.setMessage("Sorry, your device doesn't support flash light!");
alert.setButton("OK", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
});
alert.show();
} catch (Exception e) {
}
}
private void getCamera() {
if (this.camera == null) {
try {
this.camera = Camera.open();
this.params = this.camera.getParameters();
} catch (Exception e) {
Log.e("Camera Error. Failed to Open. Error: ", e.getMessage());
}
}
}
private void turnOnFlash() {
try {
if (!this.isFlashOn && this.camera != null && this.params != null) {
this.params = this.camera.getParameters();
if (this.flashtype.equals("2")) {
this.params.setFlashMode("torch");
} else if (this.flashtype.equals("3")) {
this.params.setFlashMode("torch");
} else {
this.params.setFlashMode("torch");
}
this.camera.setParameters(this.params);
this.camera.startPreview();
this.isFlashOn = true;
}
} catch (Exception e) {
}
}
private void turnOffFlash() {
try {
if (this.isFlashOn && this.camera != null && this.params != null) {
this.params = this.camera.getParameters();
this.params.setFlashMode("off");
this.camera.setParameters(this.params);
this.camera.stopPreview();
this.isFlashOn = false;
}
} catch (Exception e) {
}
}
private void startStrobe() {
try {
this.mActive = true;
this.mHander.post(this.mRunnable);
} catch (Exception e) {
}
}
}