I want to play an audio file in the background of my app. Easy enough. I want the music to persist and NOT stop or pause while switching between activities in my app. Also fairly easy and accomplished simply by doing this in the onCreate method:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
...
mp = MediaPlayer.create(MainActivity.this, R.raw.lostmexicancity);
mp.setLooping(true);
mp.start();
}
The problem? Getting the music to stop when I press the HOME button.
Killing the sound when the user presses the back button seems easy. Here's what I have for that and works great:
public void onPause() {
if(this.isFinishing()){ //BACK was pressed from this activity
mp.stop();
}
super.onPause(); }
Not complicated, but this does not catch presses of the HOME button. If the Home button is pressed, the music keeps playing even while the user no longer sees my app.
I have seen answers that involve setting permission in the manifest to Get Tasks which I shouldn't have to do and appears dangerous to users. Besides that, the solution didn't even work. I've seen solutions that involve using a service, but none of those work either because the home button STILL plays the music just like before because there doesn't seem to be a way to catch it and it doesn't 'finish' the app (not to mention that every time someone suggest using a service for this task multiple people come in and state that this is not a proper use for services)
It seems the only way to kill the music when the Home button is pressed is to use a non-conditional stop() within onPause, but that's no good because that's called when I swap activities with intents, causing the music to end between activities which is no good.
I have trouble imagining that such a common function like background music is this hard, but I've seen post after post with the same issue as me and no proper answers other than ones that would kill the music between activities within the app.
How do all the other apps on the Google play store accomplish this and yet there appears to be no clear answer online? I could just stop and start the music with each onPause(), but that would cause unprofessional gaps in audio not to mention it would start the background audio from the beginning over and over again which is unacceptable.
I'm a bit new to Android Programming (few months) and today, I faced the same problem you did (maybe you still do?)
I made it work as the following :
Lets say I have MainActivity, and in MainActivity I have Btn2 which leads to SecondActivity, and Btn3 which leads to ThirdActivity.
I declared at the beginning of MainActivity :
public static boolean shouldPlay = false;
I then implemented my onStop() method :
public void onStop() {
super.onStop();
if (!shouldPlay) { // it won't pause music if shouldPlay is true
player.pause();
player = null;
}
}
If the boolean shouldPlay is set to true, then my onStop() won't be called entirely and my music won't turn off. I then have to decide when I set it to true. When I switch from MainActivity to SecondActivity, I do it through an Intent and that's when I'll set shouldPlay to true :
Button Btn2 = (Button) findViewById(R.id.Btn2);
Btn2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
shouldPlay = true;
startActivity(intent);
}
});
And the same is done for Btn3.
Now, the last thing we want to be looking for is that if I was to go back to MainActivity after visiting SecondActivity or ThirdActivity, shouldPlay would then have been set to true. The first thing I tried was to set it to false as soon as Second and ThirdActivity are called (in their onCreate()) but it want to work, maybe because the onStop() from Main and onCreate() from others are called simultaneously (frankly I don't really get life cycle for now).
What worked is simply to set shouldPlay to false every time we launch onCreate() of Main :
shouldPlay = false;
This works properly for me.
Let me know if it does for you,
Cheers,
bRo.
#Override
public boolean onKeyDown(int keyCode, KeyEvent event)
{
if(keyCode == KeyEvent.KEYCODE_HOME){
Log.d("Jorgesys", "Home button pressed!!!");
}
return super.onKeyDown(keyCode, event);
}
but hey! This no longer works as of 4.0 + , Read this: Capture Home Key Event
Try with Back button:
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK ) {
Log.d("Jorgesys", "Back button pressed!!!");
}
return super.onKeyDown(keyCode, event);
}
To stop the media player, you are using the method:
isFinishing(): if the activity is finishing, returns true; else
returns false, but you are only pausing the activity not finishing the
activity.
public void onPause() {
if(this.isFinishing()){ //INCORRECT, Here you are pausing you activity not finishing.
mp.stop();
}
super.onPause();
}
so change to:
public void onPause() {
if(mp.isPlaying())
{
mp.stop();
}
super.onPause();
}
When your activity is on pause, evaluates if your MediaPlayer is playing, if this is true then stops the audio.
Related
I've implemented something similar to Android notification of screen off/on, but it's not working the way it should. All I want to do is stop music when the screen is turned off. I created a screen action class like this
public class ScreenAction extends BroadcastReceiver {
public static boolean wasScreenOn = true;
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
// DO WHATEVER YOU NEED TO DO HERE
wasScreenOn = false;
} else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
// AND DO WHATEVER YOU NEED TO DO HERE
wasScreenOn = true;
}
}
}
Then, in my main activities on create I have this
IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
filter.addAction(Intent.ACTION_SCREEN_OFF);
BroadcastReceiver mReceiver = new ScreenAction();
registerReceiver(mReceiver, filter);
In my main activities onPause, I have something like this:
public void onPause() {
super.onPause();
if (ScreenAction.wasScreenOn) {
final MediaPlayer mp = MediaPlayer.create(this, R.raw.pcmouseclick1);
mp.setVolume(.1f, .1f);
mp.start();
if (buttonState) {
mServ.reduceVolume();
}
}
}
I found this from an online source, but I am having issues. It seems that the screen state is always set as true, and I'm not sure how to change this.
How do I utilize this ScreenAction class to turn off music in on Pause ONLY when the user has locked the screen? I feel like I am missing something in the onPause because in onCreate I link to the class.
#Override
protected void onPause() {
// when the screen is about to turn off
// or when user is switching to another application
super.onPause();
}
#Override
protected void onResume() {
// only when screen turns on
// or when user returns to application
super.onResume();
}
Here you can see the entire lifecycle of an Activity in android:
Activity Lifecycle
Maybe you could also start and stop your music directly from the receiver:
#Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
// Pause music player
} else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
// Resume music player
}
}
You're checking ScreenAction.wasScreenOn in onPause, but that's happening before the BroadcastReceiver is called to notify you that the screen is being turned off. So at that point, ScreenAction.wasScreenOn is still true, and then it's set to false, but onPause has already run, so your music never gets paused.
To solve this, you should take the action directly in response to the screen turning off in the BroadcastReceiver. If you need to interact with your UI, consider a solution like LiveData as an abstraction so that you're not reliant on your Activity being paused at the exact moment the screen is turned off (consider also that the onPause solution wouldn't work if your Activity weren't currently visible).
I have kind of a game with 2 activities: Start Activity (with high score, start button and tutorial button) and main game activity which is is based on countdown timer, when time is up, game returns to start activity.
Problem is when user starts game and then hits home button and goes back to home screen (just leaving game by home button) Everything is ok until time is up, then Start activity appears on screen with lost message.
I've tried various combined methods like onPause witch finish(); inside and so on but it doesn't work or causes app force close.
I can't handle home button click like in onBackPressed() which I did in that case.
Is there any way to suspend app and pause all threads while it isn't in foreground?
I suggest two way
1
Create global variable like
private isInForgrand = false;
And in onStop() or onPause() and onResume() change it
#Override
public void onStop() {
isInForgrand = false;
super.onStop();
}
#Override
public void onResume() {
super.onResume();
isInForgrand = true;
}
And in onFinish() check it
#Override
public void onFinish() {
if(isInForgrand){
//do what you want
}else{
//your app NOT in Forgrannd
}
2
You can cancel CountDownTimer in onStop()
#Override
public void onStop() {
super.onStop();
mCountDownTimer.cancel();
}
I am using Java and xml to create an application for the summer. This app has music in the background, that I would like to pause and then play depending on the state it is in. When i lock my screen the music does not pause it keeps playing. How would i fix this, I have tried to use the method on this site:
https://thinkandroid.wordpress.com/2010/01/24/handling-screen-off-and-screen-on-intents
I have not been able to successfully get a working prototype, and I am working in android studio.
myPlayer = MediaPlayer.create(c(this is the context), myField(This is the raw file));
myPlayer.start();
myPlayer.setLooping(true);
myPlayer.setVolume(0.7f,0.7f);
What could I add to pause the mediaplayer when the lock button is pressed or the phone goes to sleep and then play it when the phone is unlocked?
#Override
protected void onPause() {
super.onPause();
if (myPlayer != null) {
myPlayer.pause();
}
}
#Override
protected void onResume() {
super.onResume();
if (myPlayer != null) {
myPlayer.start();
}
}
I am creating an Android app with Android Studio, however, my app crashes at runtime and I can't figure out why? My code looks fine and it has got no errors. I have an 'if statement' inside a public void onBackPressed().
//stop's the car sound that is currently being played when the devices back button is clicked
#Override
public void onBackPressed() {
if (mySound !=null) {
mySound.stop();
this.finish();
if (mySound == null) {
this.finish();
}
}
mySound is equal to a MediaPlayer.
My first 'if statement' is for when the back button is pressed (while the sound is playing), the sound will stop and the activity will close and go to the previous activity.
And my second 'if statement' is for when the back button is pressed (while the sound is NOT playing), the activity will close and go to the previous activity.
I have tried using || but that doesn't seem to work? Does anyone know what's wrong with my code?
Thanks!
ANSWER:
if (mySound !=null) {
mySound.stop();
this.finish();
}
if (mySound == null) {
this.finish();
}
if I hit the Powerbutton in my app while the app is currently running the onPause in not called. First question: Is this usual for Android?
I tried to call theonPause by setting an onKeyListener. Can I set this onKeyListener for all elements in the activity? E.g. I set it on my realativeLayout.
rLayout.setOnKeyListener(new View.OnKeyListener()
{
public boolean onKey(View v, int keyCode, KeyEvent event)
{
if ((event.getAction() == KeyEvent.ACTION_DOWN) && (keyCode == KeyEvent.KEYCODE_POWER))
{
onPause();
}
return true;
}
});
But this also didn't work. So now the main question: Do you have any possibility to call onPause if you hit the Powerbutton while the app is currently running? (Don't need to be an onKeyListener)
As your activity enters the paused state, the system calls the
onPause() method
http://developer.android.com/training/basics/activity-lifecycle/pausing.html
It's important to note that the app itself NEVER calls onPause itself because that would likely mess up the Activity's life cycle (which is managed by Android not the app). If the user presses the power button, the Activity will be paused by Android automatically, there's no need to do anything in your app.
If you think the onPause isn't called, please post the onPause code.
I just want to call onPause before my phone goes into sleepmode, howsoever ...
Here is my onPause:
#Override
protected void onPause() {
super.onPause();
appactive = 0;
lastappactive = Calendar.getInstance().getTime();
}