我试图从一个活动中启动一个BroadcastReceiver - 看起来接收器没有启动，我在logCat中没有得到任何输出。 我试图通过这样做来启动接收器：
Intent intent = new Intent();
intent.setAction(getPackageName()+".mybroadcast");
sendBroadcast(intent);
这里也是我的接收器类：
public class TriggerReceiver extends BroadcastReceiver implements
GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {
private Vibrator v;
private CountDownTimer timer;
private final long INTERVAL = 1000;
private final long TWO_MINUTES = INTERVAL * 60 * 2;
// === variables
private Context context;
private final String TAG = TriggerReceiver.class.getSimpleName();
@Override
public void onReceive(Context context, Intent intent) {
this.context = context;
Log.e(TAG, "Trigger receiver starting");
v = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
mRequestingLocationUpdates = false;
buildGoogleApiClient();
mGoogleApiClient.connect();
}
//
private void startTimer(final Location location) {
String message = context.getString(R.string.emergency_text).replace("/location here/", getMapLink(location));
sendSMS(message);
showNotification();
Log.e(TAG, " sending sms and this is the location " + location.getLatitude() + " " + location.getLongitude());
timer = new CountDownTimer(TWO_MINUTES, INTERVAL) {
@Override
public void onTick(long millisUntilFinished) {
Log.e(TAG, "Tick " + (millisUntilFinished / 1000));
int elapsedTime = (int) ((millisUntilFinished / 1000) % 60);
int minutes = (int) ((millisUntilFinished / 1000) / 60);
Log.e(TAG, elapsedTime + " | " + minutes);
if (minutes == 2) {
minutes = 1;
elapsedTime = 60;
}
}
//TODO start activity and pass extras to intent
@Override
public void onFinish() {
startTimer(mCurrentLocation);
}
}.start();
}
private void sendSMS(String message) {
ArrayList<Contact> contacts = ((BaseActivity) context).getContacts();
for (Contact contact : contacts) {
sendSMSmsg(contact.getNumber(), message);
}
}
private void stopTimer() {
timer.cancel();
}
/*location*/
/**
* Provides the entry point to Google Play services.
*/
protected GoogleApiClient mGoogleApiClient;
/**
* Stores parameters for requests to the FusedLocationProviderApi.
*/
protected LocationRequest mLocationRequest, quickLocationRequest;
/**
* Represents a geographical location.
*/
protected Location mCurrentLocation, mLastLocation;
protected Boolean mRequestingLocationUpdates;
/**
* Builds a GoogleApiClient. Uses the {@code #addApi} method to request the
* LocationServices API.
*/
protected synchronized void buildGoogleApiClient() {
Log.i(TAG, "Building GoogleApiClient");
mGoogleApiClient = new GoogleApiClient.Builder(context)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
createLocationRequest();
}
protected void createLocationRequest() {
LocationRequest mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(110000);
mLocationRequest.setFastestInterval(55000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
}
protected void startLocationUpdates() {
LocationServices.FusedLocationApi.requestLocationUpdates(
mGoogleApiClient, mLocationRequest, this);
}
protected void doQuickLocationUpdate() {
quickLocationRequest = new LocationRequest();
quickLocationRequest.setInterval(1000);
quickLocationRequest.setFastestInterval(500);
quickLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
// The final argument to {@code requestLocationUpdates()} is a LocationListener
// (http://developer.android.com/reference/com/google/android/gms/location/LocationListener.html).
LocationServices.FusedLocationApi.requestLocationUpdates(
mGoogleApiClient, quickLocationRequest, this);
}
protected void stopLocationUpdates() {
//TODO add this in onbackpresses and onStop
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
}
@Override
public void onConnected(Bundle connectionHint) {
Log.i(TAG, "Connected to GoogleApiClient");
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
mGoogleApiClient);
if (mLastLocation != null) {
startTimer(mLastLocation);
} else {
doQuickLocationUpdate();
}
if (mCurrentLocation == null) {
mCurrentLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
Log.d(TAG, "onConnected mCurrentLocation = " + mCurrentLocation.getLatitude());
}
if (mRequestingLocationUpdates) {
startLocationUpdates();
}
}
@Override
public void onLocationChanged(Location location) {
mCurrentLocation = location;
if (quickLocationRequest != null) {
quickLocationRequest = null;
}
if (timer == null) {
startTimer(location);
}
Log.d(TAG, "onLocationChanged mCurrentLocation = " + mCurrentLocation.getLatitude());
}
@Override
public void onConnectionSuspended(int cause) {
// The connection to Google Play services was lost for some reason. We call connect() to
// attempt to re-establish the connection.
Log.i(TAG, "Connection suspended");
mGoogleApiClient.connect();
}
@Override
public void onConnectionFailed(ConnectionResult result) {
// Refer to the javadoc for ConnectionResult to see what error codes might be returned in
// onConnectionFailed.
Log.i(TAG, "Connection failed: ConnectionResult.getErrorCode() = " + result.getErrorCode());
}
public void sendSMSmsg(String phoneNumber, String message) {
v.vibrate(50);
// ArrayList<PendingIntent> sentPendingIntents = new ArrayList<PendingIntent>();
// ArrayList<PendingIntent> deliveredPendingIntents = new ArrayList<PendingIntent>();
// PendingIntent sentPI = PendingIntent.getBroadcast(context, 0,
// new Intent(context, SmsSentReceiver.class), 0);
// PendingIntent deliveredPI = PendingIntent.getBroadcast(context, 0,
// new Intent(context, SmsDeliveredReceiver.class), 0);
// try {
// SmsManager sms = SmsManager.getDefault();
// ArrayList<String> mSMSMessage = sms.divideMessage(message);
// for (int i = 0; i < mSMSMessage.size(); i++) {
// sentPendingIntents.add(i, sentPI);
// deliveredPendingIntents.add(i, deliveredPI);
// }
// sms.sendMultipartTextMessage(phoneNumber, null, mSMSMessage,
// sentPendingIntents, deliveredPendingIntents);
//
// } catch (Exception e) {
// e.printStackTrace();
// }
}
public void showNotification() {
NotificationCompat.Builder mBuilder;
if (Build.VERSION.SDK_INT >= 16) {
mBuilder = new NotificationCompat.Builder(context)
.setSmallIcon(R.mipmap.sosicon)
.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
.setContentTitle(context.getString(R.string.app_name))
.setAutoCancel(true)
.setContentText(context.getString(R.string.notification_text));
// Creates an explicit intent for an Activity in your app
Intent resultIntent = new Intent();
TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
stackBuilder.addNextIntent(resultIntent);
PendingIntent resultPendingIntent =
stackBuilder.getPendingIntent(
0,
PendingIntent.FLAG_UPDATE_CURRENT
);
mBuilder.setContentIntent(resultPendingIntent);
NotificationManager mNotificationManager =
(NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
mNotificationManager.notify(10142, mBuilder.build());
}
}
public String getMapLink(Location location) {
if (location != null) {
Log.d(TAG, "http://maps.google.com/maps?z=12&t=m&q=loc:" + location.getLatitude() + "+" + location.getLongitude());
return "http://maps.google.com/maps?z=12&t=m&q=loc:" + location.getLatitude() + "+" + location.getLongitude();
} else {
return null;
}
}
//
}
以及清单中的声明：
<receiver
android:name=".TriggerReceiver"
android:enabled="true"
android:exported="true">
<intent-filter>
<action android:name="PACKAGENAME.mybroadcast" />
</intent-filter>
</receiver>
那么这里可能出现什么问题以及为什么接收器无法启动？
由于