You can use the MediaPlayer class and add a Completion listener to be activated when the sound finishes playing 

  

    MediaPlayer mp = MediaPlayer.create(this,Uri.parse(&quot;android.resource://emad.app/raw/seven_chimes&quot;));
        
    mp.setOnCompletionListener(new OnCompletionListener() {
            	
        @Override
        public void onCompletion(MediaPlayer mp) {
            performOnEnd();
        }
            
    });
    
    mp.start();

Not working with broadcast receiver but this is what worked for my current project using Kotlin to track when the audio file has finished playing.
```
playButton.setOnClickListener {

            if (isPlaying) {
                pauseSound()
            }else {
                playSound()
            }

            mediaPlayer.setOnCompletionListener {
                playButton.text = &quot;Play&quot;
                isPlaying = false
            }
        }
```
isPlaying is boolean, I will explain more if someone is confused. Hope it helps someone else in the future. Happy coding!

try using service to play the music..
after it play once, then stop your service and you can add your program on the onDestroy() service method..
hope it helps :)

With pytest, one can mark tests using a decorator


    @pytest.mark.slow
    def some_slow_test():
        pass

Then, from the command line, one can tell pytest to skip the tests marked &quot;slow&quot;

    pytest -k-slow


If I have an additional tag:

    @pytest.mark.long
    def some_long_test()
        pass

I would like to be able to skip both long AND slow tests.  I&#39;ve tried this:

    pytest -k-slow -k-long

and this:

    pytest -k-slow,long

And neither seems to work.

At the command line, how do I tell pytest to skip both the slow AND the long tests?

Pytest: Deselecting tests

Anyone can share a working example on how to call a simple C# library (actually its WPF) from python code? (I have tried using IronPython and had too much trouble with unsupported  CPython library my python code is using so I thought of trying the other way around and calling my C# code from Python). 

Here is the example I was playing with: 


    using System.Runtime.InteropServices;
    using System.EnterpriseServices;

    namespace DataViewerLibrary
    {
        public interface ISimpleProvider
        {
           [DispIdAttribute(0)]
           void Start();
        }
    
        [ComVisible(true)]
        [ClassInterface(ClassInterfaceType.None)]
        public class PlotData : ServicedComponent, ISimpleProvider
        {
           public void Start()
           {
              Plot plotter = new Plot();
              plotter.ShowDialog();
           }
        }
    }
Plotter is a WPF windows that plots an Ellipse

I don&#39;t know how to call this code from my python all. Any suggestions? 



Calling a C# library from python

I am playing a sound file using this code inside a broadcast receiver activity:

    notification.sound = Uri.parse(&quot;android.resource://emad.app/raw/seven_chimes&quot;);

I would like to detect when this file has finished playing.

I tried a loop like this but I think this is only good for the media player because it always = false even though I made sure the sound file was still playing:

    /*
     * Stay here until the chime sound is finished.
     */
       while (manager.isMusicActive()){
       }
	
Can you show me what I should use instead of `manager.isMusicActive()`?

How do you detect when a sound file has finished?

I am playing a sound file using this code inside a broadcast receiver activity:
<pre><code class="hljs language-ini">notification.sound = Uri.parse("android.resource://emad.app/raw/seven_chimes");
</code></pre>
I would like to detect when this file has finished playing.
I tried a loop like this but I think this is only good for the media player because it always = false even though I made sure the sound file was still playing:
<pre><code class="hljs language-arduino">/*
 * Stay here until the chime sound is finished.
 */
 while (manager.isMusicActive()){
 }
</code></pre>
Can you show me what I should use instead of <code>manager.isMusicActive()</code>?

I am using `ViewPager` to allow user to swipe between its views. Is there a way how to force this `ViewPager` to reload/re-instantiate its views in case that they are no longer valid or needs to be refreshed? I tried to call `notifyDataSetChanged()` on its adapter but this does not invoke `instantiateItem()` method again.

EDIT
----
Here is the class that extends from ViewPager and its adapter definision. Bellow is the `refresh()` method that I call when I want to force to refresh items. 

    public class DayFlipper extends ViewPager {

	public class FlipperAdapter extends PagerAdapter {

		@Override
		public int getCount() {
			return DayFlipper.DAY_HISTORY;
		}

		@Override
		public void startUpdate(View container) {
		}

		@Override
		public Object instantiateItem(View container, int position) {
			Log.d(TAG, &quot;instantiateItem(): &quot; + position);

			Date d = DateHelper.getBot();
			for (int i = 0; i &lt; position; i++) {
				d = DateHelper.getTomorrow(d);
			}

			d = DateHelper.normalize(d);

			CubbiesView cv = new CubbiesView(mContext);
			cv.setLifeDate(d);
			((ViewPager) container).addView(cv, 0);
			// add map
			cv.setCubbieMap(mMap);
			cv.initEntries(d);
			return cv;
		}

		@Override
		public void destroyItem(View container, int position, Object object) {
			((ViewPager) container).removeView((CubbiesView) object);
		}

		@Override
		public void finishUpdate(View container) {

		}

		@Override
		public boolean isViewFromObject(View view, Object object) {
			return view == ((CubbiesView) object);
		}

		@Override
		public Parcelable saveState() {
			return null;
		}

		@Override
		public void restoreState(Parcelable state, ClassLoader loader) {

		}

	}
        
        ...
        
        public void refresh() {
	    getAdapter().notifyDataSetChanged();
	}
    }

How to force ViewPager to re-instantiate its items

i am creating a notification inside a BroadcastReceiver via this code:

    String ns = Context.NOTIFICATION_SERVICE;
			NotificationManager mNotificationManager = (NotificationManager) context.getSystemService(ns);
            int icon = R.drawable.ic_stat_notification;
			CharSequence tickerText = &quot;New Notification&quot;;
			long when = System.currentTimeMillis();

			Notification notification = new Notification(icon, tickerText, when);
			notification.defaults |= Notification.DEFAULT_VIBRATE;
			long[] vibrate = {0,100,200,200,200,200};
			notification.vibrate = vibrate;
            notification.flags |= Notification.FLAG_AUTO_CANCEL;
			
			CharSequence contentTitle = &quot;Title&quot;;
			CharSequence contentText = &quot;Text&quot;;
			Intent notificationIntent = new Intent(context, NotificationActivity.class);
			notificationIntent.putExtra(Global.INTENT_EXTRA_FOO_ID, foo_id);
    PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);

			notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);

			int mynotification_id = 1;

			mNotificationManager.notify(mynotification_id, notification);

When I click on the notification, it opens the NotificationActivity and inside the Activity i can retrieve the foo_id from the Intent-Bundle (e.g. 1)

However if another notification is triggered and i click on it again, the activity still receives the &quot;old&quot; value (1) from the Intent-Bundle. I&#39;ve tried to clear the bundle with clear(), but am receiving the same effect. I think sth is wrong with my code..

Notification passes old Intent Extras

I am trying to, somewhat clone the design of an activity [from a set of slides on Android UI design][1]. However I am having a problem with a very simple task.

I have created the layout as shown in the image, and the header is a `TextView` in a `RelativeLayout`. Now I wish to change the background colour of the `RelativeLayout`, however I cannot seem to figure out how.

I know I can set the `android:background` property in the `RelativeLayout` tag in the XML file, but what do I set it to? I want to define a new colour that I can use in multiple places. Is it a `drawable` or a `string`?

Additionally I would expect there to be a very simple way to this from within the Eclipse Android UI designer that I must be missing?


I am a bit frustrated currently, as this should be an activity that is performed with a few clicks at maximum. So any help is very appreciated. :)



![Android activity design][2]


  [1]: https://docs.google.com/present/view?id=0AfYilHnGmJNGZGZwNnZ4dm5fNDdkY3o2M3Bqag&amp;hl=en_GB
  [2]: http://i.stack.imgur.com/BeIBr.png

Setting background colour of Android layout element

I am trying to organize my code and move repetitive functions to a single class.
This line of code works fine inside a class that extends activity:

    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

However it is not working when I try to include it into an external class.

How do I call getWindow() from another class to apply it inside an Activity?


How to call getWindow() outside an Activity in Android?

I&#39;m using the v4 compatibility ViewPager in Android.  My FragmentActivity has a bunch of data which is to be displayed in different ways on different pages in my ViewPager.  So far I just have 3 instances of the same ListFragment, but in the future I will have 3 instances of different ListFragments.  The ViewPager is on a vertical phone screen, the lists are not side-by-side.

Now a button on the ListFragment starts an separate full-page activity (via the FragmentActivity), which returns and FragmentActivity modifies the data, saves it, then attempts to update all views in its ViewPager.  It is here, where I am stuck.

    public class ProgressMainActivity extends FragmentActivity
    {
    	MyAdapter mAdapter;
    	ViewPager mPager;
    	
    	@Override
    	public void onCreate(Bundle savedInstanceState)
    	{
    	...
    		mAdapter = new MyAdapter(getSupportFragmentManager());
    
    		mPager = (ViewPager) findViewById(R.id.viewpager);
    		mPager.setAdapter(mAdapter);
    	}
    	
    	@Override
    	protected void onActivityResult(int requestCode, int resultCode, Intent data)
        {
            ...
            updateFragments();
    		...
        }
    	public void updateFragments()
    	{
    		//Attempt 1:
    		//mAdapter.notifyDataSetChanged();
    		//mPager.setAdapter(mAdapter);
    		
    		//Attempt 2:
    		//HomeListFragment fragment = (HomeListFragment) getSupportFragmentManager().findFragmentById(mAdapter.fragId[0]);
    		//fragment.updateDisplay();
    	}
    	
    	public static class MyAdapter extends FragmentPagerAdapter implements
             TitleProvider
    	{
          int[] fragId = {0,0,0,0,0};
          public MyAdapter(FragmentManager fm)
          {
             super(fm);
          }
          @Override
          public String getTitle(int position){
             return titles[position];
          }
          @Override
          public int getCount(){
             return titles.length;
          }
    
          @Override
          public Fragment getItem(int position)
          {
    		
             Fragment frag = HomeListFragment.newInstance(position);
             //Attempt 2:
    		 //fragId[position] = frag.getId();
             return frag;
          }
          
          @Override
          public int getItemPosition(Object object) {
             return POSITION_NONE; //To make notifyDataSetChanged() do something
         }
       }
       
        public class HomeListFragment extends ListFragment
    	{
    	...
    		public static HomeListFragment newInstance(int num)
    		{
    			HomeListFragment f = new HomeListFragment();
    			...
    			return f;
    		}
       ...

Now as you can see, my first attempt was to notifyDataSetChanged on the entire FragmentPagerAdapter, and this showed to update the data sometimes, but others I got an IllegalStateException: Can not perform this action after onSaveInstanceState.  

My second attempt involed trying to call an update function in my ListFragment, but getId in getItem returned 0.  As per the docs I tried by 

&gt; acquiring a reference to the Fragment from FragmentManager, using
&gt; findFragmentById() or findFragmentByTag()

but I don&#39;t know the tag or id of my Fragments! I have an android:id=&quot;@+id/viewpager&quot; for ViewPager, and a android:id=&quot;@android:id/list&quot; for my ListView in the ListFragment layout, but I don&#39;t think these are useful.

So, how can I either:
a) update the entire ViewPager safely in one go (ideally returning the user to the page he was on before) - it is ok that the user see the view change.
Or preferably,
b) call a function in each affected ListFragment to update the ListView manually.

Any help would be gratefully accepted!

Update data in ListFragment as part of ViewPager

What is the best way to exit/terminate a while loop in Java?


For example, my code is currently as follows:

    while(true){
        if(obj == null){

            // I need to exit here

        }
    }

How do I exit a while loop in Java?

Why does the following work fine?

    String str;
    while (condition) {
        str = calculateStr();
        .....
    }

But this one is said to be dangerous/incorrect:

    while (condition) {
        String str = calculateStr();
        .....
    }

Is it necessary to declare variables outside the loop?

Declaring variables inside or outside of a loop

What is the difference between a standard `while(true)` loop and `for(;;)`?

Is there any, or will both be mapped to the same bytecode after compiling?

Java: for(;;) vs. while(true)

I have a list consisting of like 20000 lists. I use each list&#39;s 3rd element as a flag. I want to do some operations on this list as long as at least one element&#39;s flag is 0, it&#39;s like:

    my_list = [[&quot;a&quot;, &quot;b&quot;, 0], [&quot;c&quot;, &quot;d&quot;, 0], [&quot;e&quot;, &quot;f&quot;, 0], .....]

In the beginning, all flags are 0. I use a while loop to check if at least one element&#39;s flag is 0:


    def check(list_):
        for item in list_:
            if item[2] == 0:
                return True
        return False

If `check(my_list)` returns `True`, then I continue working on my list:

    while check(my_list):
        for item in my_list:
            if condition:
                item[2] = 1
            else:
                do_sth()

Actually, I wanted to remove an element in my_list as I iterated over it, but I&#39;m not allowed to remove items as I iterate over it.

Original my_list didn&#39;t have flags:

    my_list = [[&quot;a&quot;, &quot;b&quot;], [&quot;c&quot;, &quot;d&quot;], [&quot;e&quot;, &quot;f&quot;], .....]

Since I couldn&#39;t remove elements as I iterated over it, I invented these flags. But the `my_list` contains many items, and `while` loop reads all of them at each `for` loop, and it consumes lots of time! Do you have any suggestions?

How to check if all elements of a list match a condition?

I am trying to plot some data from a camera in real time using OpenCV. However, the real-time plotting (using matplotlib) doesn&#39;t seem to be working.

I&#39;ve isolated the problem into this simple example:

    fig = plt.figure()
    plt.axis([0, 1000, 0, 1])

    i = 0
    x = list()
    y = list()

    while i &lt; 1000:
        temp_y = np.random.random()
        x.append(i)
        y.append(temp_y)
        plt.scatter(i, temp_y)
        i += 1
        plt.show()

I would expect this example to plot 1000 points individually. What actually happens is that the window pops up with the first point showing (ok with that), then waits for the loop to finish before it populates the rest of the graph.

Any thoughts why I am not seeing points populated one at a time?

Content Type	Original Author	Original Content on Stackoverflow
Question	Emad-ud-deen	View Question on Stackoverflow
Solution 1 - Android	Ronny	View Answer on Stackoverflow
Solution 2 - Android	thesamoanppprogrammer	View Answer on Stackoverflow
Solution 3 - Android	Michael Frans	View Answer on Stackoverflow

How do you detect when a sound file has finished?

Android Problem Overview

Android Solutions

Solution 1 - Android

Solution 2 - Android

Solution 3 - Android

Calling a C# library from python

Pytest: Deselecting tests

Attributions