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import android.bluetooth.le.BluetoothLeScanner;
import android.bluetooth.le.ScanCallback;
import android.bluetooth.le.ScanResult;
import android.support.annotation.NonNull;
import rx.Emitter;
import rx.Observable;

import java.util.List;

public class RxBluetoothScanner {

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public Observable<Boolean> enablePushNotifications(boolean enable) {
  return Observable.fromCallable(() -> sharedPrefs
    .edit()
    .putBoolean(KEY_PUSH_NOTIFICATIONS_PREFS, enable)
    .commit());
}

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public Observable<byte[]> readFile(@NonNull FileInputStream stream) {
  final SyncOnSubscribe<FileInputStream, byte[]> fileReader = SyncOnSubscribe.createStateful(
    () -> stream,
    (stream, output) -> {
      try {
        final byte[] buffer = new byte[BUFFER_SIZE];
        int count = stream.read(buffer);
        if (count < 0) {
          output.onCompleted();
        } else {

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public void touchEventHandler(@NotNull View view) {
  final ConnectedObservable<MotionEvent> motionEventObservable = RxView.touches(view).publish();
  // Capture down events
  final Observable<MotionEvent> downEventsObservable = motionEventObservable
    .filter(event -> event.getAction() == MotionEvent.ACTION_DOWN);
  // Capture up events
  final Observable<MotionEvent> upEventsObservable = motionEventObservable
    .filter(event -> event.getAction() == MotionEvent.ACTION_UP);

  // Show a red circle at the position where the down event ocurred

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public void touchEventHandler(@NotNull View view) {
  final Observable<MotionEvent> motionEventObservable = RxView.touches(view).share();
  // Capture down events
  final Observable<MotionEvent> downEventsObservable = motionEventObservable
    .filter(event -> event.getAction() == MotionEvent.ACTION_DOWN);
  // Capture up events
  final Observable<MotionEvent> upEventsObservable = motionEventObservable
    .filter(event -> event.getAction() == MotionEvent.ACTION_UP);

  // Show a red circle at the position where the down event ocurred

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#!/bin/bash

COUNT=0
RENAME_FILE="enter_new_filename_%02d.png"
for FILE in *.png; do
	mv "$FILE" $(printf $RENAME_FILE $COUNT)
	let COUNT=COUNT+1
done

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public class MainActivity extends AppCompatActivity {
    private static final String IMAGE_URL = "https://www.android.com/static/2016/img/logo-android-green_2x.png";
    private static final int MSG_SHOW_PROGRESS = 1;
    private static final int MSG_SHOW_IMAGE = 2;

    private ProgressBar progressIndicator;
    private ImageView imageView;
    private Handler handler;

    class ImageFetcher implements Runnable {

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public class MainActivity extends AppCompatActivity {
    private static final String IMAGE_URL = "https://www.android.com/static/2016/img/logo-android-green_2x.png";

    private ProgressBar progressIndicator;
    private ImageView imageView;
    private Handler handler;

    class ImageFetcher implements Runnable {
        final String url;

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public class MainActivity extends AppCompatActivity {
    private static final String TAG = "Ping";

    private Handler handler;

    class PingHandler extends Handler {
        @Override
        public void handleMessage(Message msg) {
            Log.d(TAG, "Ping message received");
        }

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public class MainActivity extends AppCompatActivity {
    private static final String IMAGE_URL = "https://www.android.com/static/img/android.png";

    private static final int MSG_SHOW_PROGRESS = 1;
    private static final int MSG_SHOW_IMAGE = 2;

    private ProgressBar progressIndicator;
    private ImageView imageView;
    private Handler handler;