45 lines
1.3 KiB
Java
45 lines
1.3 KiB
Java
package org.thoughtcrime.securesms.gcm;
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import android.support.annotation.WorkerThread;
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import android.text.TextUtils;
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import com.google.firebase.iid.FirebaseInstanceId;
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import org.thoughtcrime.securesms.logging.Log;
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import org.whispersystems.libsignal.util.guava.Optional;
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import java.util.concurrent.CountDownLatch;
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import java.util.concurrent.atomic.AtomicReference;
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public final class FcmUtil {
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private static final String TAG = FcmUtil.class.getSimpleName();
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/**
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* Retrieves the current FCM token. If one isn't available, it'll be generated.
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*/
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@WorkerThread
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public static Optional<String> getToken() {
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CountDownLatch latch = new CountDownLatch(1);
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AtomicReference<String> token = new AtomicReference<>(null);
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FirebaseInstanceId.getInstance().getInstanceId().addOnCompleteListener(task -> {
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if (task.isSuccessful() && task.getResult() != null && !TextUtils.isEmpty(task.getResult().getToken())) {
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token.set(task.getResult().getToken());
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} else {
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Log.w(TAG, "Failed to get the token.", task.getException());
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}
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latch.countDown();
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});
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try {
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latch.await();
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} catch (InterruptedException e) {
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Log.w(TAG, "Was interrupted while waiting for the token.");
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}
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return Optional.fromNullable(token.get());
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}
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}
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