Android Open Source - MrParkingNavigator Network Awaiter

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License

The source code is released under:

MIT License

Java Source Code

package ru.mail.parking.utils;
/*from  w w w. j ava2  s .co  m*/
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

public final class NetworkAwaiter {
  private static final NetworkAwaiter sInstance = new NetworkAwaiter();
  public static NetworkAwaiter getInstance() {
    return sInstance;
  }

  private NetworkAwaiter() {}


  private boolean mNetworkAvailable = NetworkStateReceiver.isNetworkAvailable();
  private final Map<String, Runnable> mTasks = new HashMap<>();
  private final Set<String> mPending = new HashSet<>();


  public synchronized void start(String key, Runnable task) {
    mTasks.put(key, task);
    if (!mPending.contains(key))
      if (mNetworkAvailable)
        Utils.runUi(mTasks.remove(key));
      else
        mPending.add(key);
  }

  public synchronized void onNetworkChanged(boolean hasNetwork) {
    boolean old = mNetworkAvailable;
    mNetworkAvailable = hasNetwork;

    if (mNetworkAvailable && !old) {
      for (String key: mPending)
        Utils.runUi(mTasks.remove(key));

      mPending.clear();
    }
  }

  public synchronized void cancelAll() {
    mTasks.clear();
    mPending.clear();
  }
}

Java Source Code List

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