Android Open Source - mac-hopper Countdown Fragment

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From Project

Back to project page mac-hopper.

License

The source code is released under:

MIT License

Java Source Code

package uk.co.danhawkes.machopper.ui;
//from   w  ww.  ja  v a 2 s.  co m
import java.lang.ref.WeakReference;
import java.util.Locale;

import uk.co.danhawkes.machopper.AppSingleton;
import uk.co.danhawkes.machopper.R;
import uk.co.danhawkes.machopper.mac.Mac;
import uk.co.danhawkes.machopper.mac.MacUtils;
import uk.co.danhawkes.machopper.mac.MacUtils.MacChangedEvent;
import android.animation.ObjectAnimator;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.app.Fragment;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.LinearInterpolator;
import android.widget.ProgressBar;
import android.widget.TextView;

import com.stericson.RootTools.RootTools;

public class CountdownFragment extends Fragment {

  private TextView macTextView;
  private TextView progressTextView;
  private ProgressBar progressBar;
  private UiHandler uiHandler = new UiHandler(this);

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setHasOptionsMenu(true);

    // Start the timer if enabled and not previously been set
    // TODO this should check various other preferences as well
    if (AppSingleton.getPreferences().getBoolean(getString(R.string.pref_key_rotate_enabled),
        false)) {
      if (AppSingleton.getAlarmUtils().getAlarmInterval() == 0) {
        AppSingleton.getAlarmUtils().rescheduleAlarmFromPreferences(
            AppSingleton.getPreferences());
      }
    }
  }

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View v = inflater.inflate(R.layout.fragment_countdown, container, false);
    macTextView = (TextView) v.findViewById(R.id.mac_text);
    progressTextView = (TextView) v.findViewById(R.id.progress_text);
    progressBar = (ProgressBar) v.findViewById(R.id.progress_bar);
    return v;
  }

  @Override
  public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    inflater.inflate(R.menu.countdown, menu);
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();
    if (id == R.id.action_change_mac) {
      changeMac();
      return true;
    } else {
      return false;
    }
  }

  @Override
  public void onResume() {
    super.onResume();
    requestRootAndShowErrorOnRejection();
    AppSingleton.getBus().register(this);
    uiHandler.sendEmptyMessage(UiHandler.INITIAL);
  }

  @Override
  public void onPause() {
    super.onPause();
    AppSingleton.getBus().unregister(this);
    uiHandler.removeMessages(UiHandler.TICK);
  }

  private static class UiHandler extends Handler {

    public static final int INITIAL = 0;
    public static final int TICK = 1;
    private final WeakReference<CountdownFragment> mFragment;
    private long lastRemaining = 0;

    public UiHandler(CountdownFragment fragment) {
      mFragment = new WeakReference<CountdownFragment>(fragment);
    }

    @Override
    public void handleMessage(Message msg) {
      CountdownFragment fragment = mFragment.get();

      if (fragment != null) {
        long remaining = AppSingleton.getAlarmUtils().getTimeRemainingUntilNextAlarm();
        long interval = AppSingleton.getAlarmUtils().getAlarmInterval();
        fragment.updateProgressTime(remaining, interval);
        if (remaining > lastRemaining) {
          fragment.updateProgressBar(remaining, interval);
        }
        lastRemaining = remaining;
        if (msg.what == INITIAL) {
          fragment.updateDisplayedMac(MacUtils.getCurrentMac(fragment.getActivity(),
              AppSingleton.getStore()));
          this.sendMessageDelayed(obtainMessage(TICK), remaining % 1000);
        } else {
          this.sendMessageDelayed(obtainMessage(TICK), 1000);
        }
      }
    };
  };

  public void onEvent(MacChangedEvent event) {
    uiHandler.sendEmptyMessage(UiHandler.INITIAL);
  }

  private void requestRootAndShowErrorOnRejection() {
    if (!RootTools.isAccessGiven()) {
      new RootUnavailableDialogFragment().show(getFragmentManager(), null);
    } else {
      DialogFragment fragment = (DialogFragment) getFragmentManager().findFragmentByTag(
          RootUnavailableDialogFragment.TAG);
      if (fragment != null) {
        fragment.dismiss();
      }
    }
  }

  private void updateDisplayedMac(Mac mac) {
    macTextView.setText(mac.toString(true, ":"));
  }

  private void updateProgressTime(long remaining, long interval) {
    int seconds = (int) ((remaining / 1000) % 60);
    int minutes = (int) ((remaining / 60000) % 60);
    int hours = (int) ((remaining / 3600000) % 60);
    String s;
    if (hours > 0) {
      s = String.format(Locale.US, "%dh %dm %ds", hours, minutes, seconds);
    } else if (minutes > 0) {
      s = String.format(Locale.US, "%dm %ds", minutes, seconds);
    } else {
      s = String.format(Locale.US, "%ds", seconds);
    }
    progressTextView.setText(s);
  }

  private void updateProgressBar(long remaining, long interval) {
    long elapsed = interval - remaining;
    int progress = (int) (1000.0f * (((float) elapsed) / (float) interval));
    ObjectAnimator animator = ObjectAnimator.ofInt(progressBar, "progress", progress,
        progressBar.getMax());
    animator.setDuration(remaining);
    animator.setInterpolator(new LinearInterpolator());
    animator.start();
  }

  public static class RootUnavailableDialogFragment extends DialogFragment {

    private static final String TAG = RootUnavailableDialogFragment.class.getSimpleName();

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
      AlertDialog.Builder builder = new AlertDialog.Builder(this.getActivity());
      builder.setTitle(getString(R.string.error_root_unavailable_title));
      builder.setMessage(getString(R.string.error_root_unavailable_message));
      builder.setNeutralButton(android.R.string.ok, null);
      return builder.create();
    }
  }

  private void changeMac() {
    Mac mac = new Mac();
    getActivity().sendBroadcast(MacUtils.newChangeMacIntent(mac));
    // If timer is running, restart it
    long currentInterval = AppSingleton.getStore().loadScheduledAlarmInterval();
    if (currentInterval > 0) {
      AppSingleton.getAlarmUtils().rescheduleAlarm(currentInterval);
    }
  }
}

Java Source Code List

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