I am new to Android development and I have slider fragments in my activity. I am trying to play different sounds for different sliders. However, when I slide from one page to another page, the sounds are overlapping. Can anyone help us? Here's my code:
public class Diabetes1 extends Fragment {
MediaPlayer mp;
View rootView;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.slidertopimagecardlayout, container, false);
SharedPreferences prefs = this.getActivity().getSharedPreferences("MY_LANGUAGE", MODE_PRIVATE);
if (prefs.getString("myLanguage", "").equals("en")) {
mp = MediaPlayer.create(getActivity().getBaseContext(), getResources().getIdentifier("diab1en", "raw", this.getActivity().getPackageName()));
mp.start();
} else if (prefs.getString("myLanguage", "").equals("es")) {
mp = MediaPlayer.create(getActivity().getBaseContext(), getResources().getIdentifier("diab1en", "raw", this.getActivity().getPackageName()));
mp.start();
}
return rootView;
}
#Override
public void setUserVisibleHint(boolean isVisibleToUser) {
super.setUserVisibleHint(isVisibleToUser);
// Make sure that we are currently visible
if (this.isVisible()) {
// If we are becoming invisible, then...
if (!isVisibleToUser) {
mp.stop();
} else {
// do what you like
}
}
}
#Override
public void onPause() {
super.onPause();
if(mp.isPlaying()) {
mp.stop();
}
}
#Override
public void onResume() {
super.onResume();
}
}
Viewpager doesn't work appropriately for your purpose because it creates offscreen fragments for fast transition between pages. For your problem onCreateView is called for each but onPause isn't. To handle this you can use pageChangeListener with your pagerAdapter. After each page change you can switch to another sound and stop the current one. To do this you have to extract your media player logic from your page fragments.
try this code and see if it works
public class Diabetes1 extends Fragment {
MediaPlayer mp;
View rootView;
Boolean isPLaying = false;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.slidertopimagecardlayout, container, false);
SharedPreferences prefs = this.getActivity().getSharedPreferences("MY_LANGUAGE", MODE_PRIVATE);
if (prefs.getString("myLanguage", "").equals("en")) {
mp = MediaPlayer.create(getActivity().getBaseContext(), getResources().getIdentifier("diab1en", "raw", this.getActivity().getPackageName()));
mp.start();
isPLaying = true;
} else if (prefs.getString("myLanguage", "").equals("es")) {
mp = MediaPlayer.create(getActivity().getBaseContext(), getResources().getIdentifier("diab1en", "raw", this.getActivity().getPackageName()));
mp.start();
isPLaying = true;
}
return rootView;
}
#Override
public void setUserVisibleHint(boolean isVisibleToUser) {
super.setUserVisibleHint(isVisibleToUser);
// Make sure that we are currently visible
if (this.isVisible()) {
// If we are becoming invisible, then...
if (!isVisibleToUser) {
mp.stop();
} else {
// do what you like
}
}
}
#Override
public void onPause() {
super.onPause();
if(isPlaying) {
mp.stop();
isPLaying = false;
}
}
#Override
public void onResume() {
super.onResume();
}
}
Related
I am working on floating Keyboard using Recycler view which would appear on screen when a button is clicked and dismisses when Right / Left swipe is done. As I am doing so I observed the swiping the keyboard is not smoother (Some times swipe listeners does not detect swipe gestures.) . Then I referred the following links and re-worked,
https://medium.com/#euryperez/android-pearls-detect-swipe-and-touch-over-a-view-203ae2c028dc
https://stackoverflow.com/questions/4139288/android-how-to-handle-right-to-left-swipe-gestures.
I added gesture listeners to the child of Recycler view and used three override methods onClick(), onSwipeRight() and onSwipeLeft(). The position of the onClick is obtained perfectly but sometimes Swipe Listeners are not detected this makes users to feel swiping is not smoother.
All I needed is to make swipe smoother and detecting position of clicking keys without compromising both. Is there any ways to implement these feature if there any way suggest me!. Here is my code. Thanks in Advance !.
public ViewHolder(View v) {
super(v);
textView = (TextView) v.findViewById(R.id.textView);
imageView = (ImageView) v.findViewById(R.id.imageView);
relativeLayout = (RelativeLayout) v.findViewById(R.id.relativeLayout);
mBodyContainer = (ConstraintLayout) v.findViewById(R.id.body_container);
cllayout = (RelativeLayout) v.findViewById(R.id.cllayout);
setSwipeGestureForParent(cllayout);
}
private void setSwipeGestureForParent(final View view) {
view.setOnTouchListener(new OnSwipeTouchListener(mContext) {
#Override
public boolean onTouch(View v, MotionEvent event) {
parentview.stopScroll();
String view = item.text;
if (view.equals("")) {
} else if (v.getId() != R.id.body_container && !view.equals("")) {
switch (event.getAction())
{
case MotionEvent.ACTION_DOWN:
imageView.setBackground(ContextCompat.getDrawable(mContext, R.drawable.bg_keyboard_key_selected));
break;
case MotionEvent.ACTION_MOVE:
imageView.setBackground(ContextCompat.getDrawable(mContext, R.drawable.bg_keyboard_key_selected));
break;
case MotionEvent.ACTION_BUTTON_PRESS:
imageView.setBackground(ContextCompat.getDrawable(mContext, R.drawable.bg_keyboard_key_selected));
break;
default:
imageView.setBackground(ContextCompat.getDrawable(mContext, R.drawable.bg_keyboard_key_normal));
break;
}
}
return super.onTouch(v, event);
}
#Override
public void onClick() {
super.onClick();
Toast.makeText(mContext, "onclick", Toast.LENGTH_SHORT).show();
}
#Override
public void onSwipeLeft() {
Toast.makeText(mContext, "Swipeleft", Toast.LENGTH_SHORT).show();
}
#Override
public void onSwipeRight() {
Toast.makeText(mContext, "SwipeRight", Toast.LENGTH_SHORT).show();
}
});
}
I have prepared 2 general 'copy-and-paste' classes for you so you can very easily use all gestures on the RecyclerView.
1 - GestureDetector - just add it to your project
class OnSwipeTouchListener implements View.OnTouchListener {
private final GestureDetector gestureDetector;
public OnSwipeTouchListener(Context ctx, TouchListener touchListener) {
gestureDetector = new GestureDetector(ctx, new GestureListener(touchListener));
}
#Override
public boolean onTouch(View v, MotionEvent event) {
return gestureDetector.onTouchEvent(event);
}
private final class GestureListener extends GestureDetector.SimpleOnGestureListener {
private static final int SWIPE_THRESHOLD = 300;
private static final int SWIPE_VELOCITY_THRESHOLD = 300;
private TouchListener touchListener;
GestureListener(TouchListener touchListener) {
super();
this.touchListener = touchListener;
}
#Override
public boolean onDown(MotionEvent e) {
return true;
}
#Override
public boolean onSingleTapConfirmed(MotionEvent e) {
Log.i("TAG", "onSingleTapConfirmed:");
touchListener.onSingleTap();
return true;
}
#Override
public void onLongPress(MotionEvent e) {
Log.i("TAG", "onLongPress:");
touchListener.onLongPress();
}
#Override
public boolean onDoubleTap(MotionEvent e) {
touchListener.onDoubleTap();
return true;
}
#Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
boolean result = false;
try {
float diffY = e2.getY() - e1.getY();
float diffX = e2.getX() - e1.getX();
if (Math.abs(diffX) > Math.abs(diffY)) {
if (Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) {
if (diffX > 0) {
touchListener.onSwipeRight();
} else {
touchListener.onSwipeLeft();
}
result = true;
}
} else if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
if (diffY > 0) {
touchListener.onSwipeDown();
} else {
touchListener.onSwipeUp();
}
result = true;
}
} catch (Exception exception) {
exception.printStackTrace();
}
return result;
}
}
}
2 - TouchListener - just add the interface definition to your project. To make the use even more easy, I have used some default implementations of the interface. So, you need to add to your module's build.gradle:
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
Add the interface:
public interface TouchListener {
void onSingleTap();
default void onDoubleTap() {
Log.i("TAG", "Double tap");
}
default void onLongPress() {
Log.i("TAG", "Long press");
}
default void onSwipeLeft() {
Log.i("TAG", "Swipe left");
}
default void onSwipeRight() {
Log.i("TAG", "Swipe right");
}
default void onSwipeUp() {
Log.i("TAG", "Swipe up");
}
default void onSwipeDown() {
Log.i("TAG", "Swipe down");
}
}
3 - Now you can attach to any view the TouchListener and implement only those methods you really need. An example is:
holder.anyview.setOnTouchListener(new OnSwipeTouchListener(mCtx, new TouchListener() {
#Override
public void onSingleTap() {
Log.i("TAG", ">> Single tap");
}
#Override
public void onDoubleTap() {
Log.i("TAG", ">> Double tap");
}
#Override
public void onLongPress() {
Log.i("TAG", ">> "Long press");
}
#Override
public void onSwipeLeft() {
Log.i("TAG", ">> Swipe left");
}
#Override
public void onSwipeRight() {
Log.i("TAG", ">> Swipe right");
}
}));
That's all! Enjoy.
Here I'm using Custom Adapter by implementing listAdapter to Support buttons in the list items. When i click the Delete button it deletes currect row. But i can't able to refresh this listView.
File Structure is MainActivity -> FragmentClass-> this Custom class for the listAdpater.
public class Category_ListView_Custom_Adapter extends BaseAdapter implements ListAdapter{
private Realm realm;
private ArrayList<String> list = new ArrayList<>();
private Context context;
public Category_ListView_Custom_Adapter(ArrayList<String> list, Context context){
this.list = list;
this.context = context;
}
#Override
public int getCount() {
return list.size();
}
#Override
public Object getItem(int i) {
return list.get(i);
}
#Override
public long getItemId(int i) {
return i;
}
#Override
public View getView(final int i, View view, ViewGroup viewGroup) {
View view1 = view;
realm = Realm.getDefaultInstance();
if(view == null) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(R.layout.category_listview_row, null);
}
TextView listItemText = (TextView) view.findViewById(R.id.item);
listItemText.setText(list.get(i));
ImageView edit = (ImageView) view.findViewById(R.id.image);
ImageView delete = (ImageView) view.findViewById(R.id.delete);
edit.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// list.remove(i);
/// Toast.makeText(view.getContext(), "hey "+list.get(i).toString(), Toast.LENGTH_SHORT).show();
// notifyDataSetChanged();
Intent intent = new Intent(context, AddCategory.class);
intent.putExtra("category","expense");
intent.putExtra("subcategory", list.get(i));
context.startActivity(intent);
}
});
delete.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
RealmResults<Category> categorylist = realm.where(Category.class).equalTo("Id",i+1).and().equalTo("Subcategory",list.get(i)).findAll();
for (Category category : categorylist) {
realm.beginTransaction();
categorylist.deleteFirstFromRealm();
realm.commitTransaction();
try {
context.notifyAll();
}catch (Exception e){
Toast.makeText(context, e.toString(), Toast.LENGTH_SHORT).show();
}
// Expense.call_resume
}
}
});
return view;
}
}
Please Help me. Thank you.
You are .removing from a wrong view. Try to make root List<> static and do Class.list.get(i).remove or something like that.
Also, try to hide a view inside your get view.
I'm developing an app which counts number of times the app goes to the background. It also retains the values when the orientation is changed. Though I have it working of all use cases, I have one use case which does not work.
Case : When I press the home button, change the phone's orientation and reopen the app, It does open in landscape mode but, the background count does not increase.
I have tried setting values in all the life cycle methods. It doesn't work. Hope somebody can help me with this.
`
public class MainActivity extends AppCompatActivity {
private int clickCount =0, backgroundCount = 0;
TextView tvClickCountValue, tvBackgroundCountValue;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if( savedInstanceState != null){
clickCount = savedInstanceState.getInt("COUNT");
backgroundCount = savedInstanceState.getInt("BGCOUNT");
}
setContentView(R.layout.activity_main);
tvClickCountValue = (TextView) this.findViewById(R.id.tvClickCountValue);
tvBackgroundCountValue = (TextView) this.findViewById(R.id.tvBackgroundCountValue);
setView(MainActivity.this);
}
public void onClick(View v){
clickCount += 1;
tvClickCountValue.setText(Integer.toString(clickCount));
}
public void setView(Context ctx){
tvClickCountValue.setText(Integer.toString(clickCount));
tvBackgroundCountValue.setText(Integer.toString(backgroundCount));
}
#Override
protected void onStop() {
super.onStop();
backgroundCount += 1;
}
#Override
protected void onResume() {
super.onResume();
tvClickCountValue.setText(Integer.toString(clickCount));
tvBackgroundCountValue.setText(Integer.toString(backgroundCount));
}
#Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt("COUNT", clickCount);
outState.putInt("BGCOUNT", backgroundCount);
}
#Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
clickCount = savedInstanceState.getInt("COUNT");
backgroundCount = savedInstanceState.getInt("BGCOUNT");
}
}
This article contains useful information: https://developer.android.com/guide/topics/resources/runtime-changes.html especially in the section about Handling The Change.
Try handling it on onConfigurationChanged() of you have disabled Activity restarts on orientation changes. Otherwise, probably through this article you will find which case applies to your scenario.
By reading the problem description, I am assuming that if you don't rotate the device the application works as intended.
you need to persist the count in the SharedPreferences. each time you reopen the app read the last value from the SharedPreferences. And increment and save to SharedPreferences each time the app is hidden.
Then you can count the with #kiran code:
public class BaseActivity extends Activity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}
public static boolean isAppInFg = false;
public static boolean isScrInFg = false;
public static boolean isChangeScrFg = false;
#Override
protected void onStart() {
if (!isAppInFg) {
isAppInFg = true;
isChangeScrFg = false;
onAppStart();
}
else {
isChangeScrFg = true;
}
isScrInFg = true;
super.onStart();
}
#Override
protected void onStop() {
super.onStop();
if (!isScrInFg || !isChangeScrFg) {
isAppInFg = false;
onAppPause();
}
isScrInFg = false;
}
public void onAppStart() {
// app in the foreground
// show the count here.
}
public void onAppPause() {
// app in the background
// start counting here.
}
}
I am trying to have a button within a Tab which is part of an activity for uploading images, when clicking the button inside one of the 2 Tabs presented in the activity ( Tab 1 pics, Tab 2 Vid ) the user could choose an image from the device.
My problem is implemneting the onClick Listener and onActivityResult which is not being used when placed after onClick, plus the #Override is being underlined as an error.
I guess i am not implementing the onClick the right way and not sure how to activate onActivityResult the proper way, i would appreciate any guidance;
MainActivty;
public class upload extends AppCompatActivity {
public String UserID;
private static final int REQUEST_SIGNUP = 0;
private DrawerLayout mDrawerLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.upload);
Firebase.setAndroidContext(this);
// Adding Toolbar to Main screen
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// Setting ViewPager for each Tabs
ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
// Set Tabs inside Toolbar
TabLayout tabs = (TabLayout) findViewById(R.id.tabs);
tabs.setupWithViewPager(viewPager);
}
private void setupViewPager(ViewPager viewPager) {
Adapter adapter = new Adapter(getSupportFragmentManager());
adapter.addFragment(new UploadPictures(), "Pictures");
adapter.addFragment(new UploadVideos(), "Videos");
viewPager.setAdapter(adapter);
}
static class Adapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public Adapter(FragmentManager manager) {
super(manager);
}
#Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
#Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
And here is the Fragment Code;
public class UploadPictures extends android.support.v4.app.Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
final RecyclerView recyclerView = (RecyclerView) inflater.inflate(
R.layout.recycler_view, container, false);
ContentAdapter adapter = new ContentAdapter(recyclerView.getContext());
recyclerView.setAdapter(adapter);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
return recyclerView;
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public ImageView picture;
public EditText tagEditText;
public Button tagCurLoc, choosePic, uploadContent;
public ViewHolder(LayoutInflater inflater, ViewGroup parent) {
super(inflater.inflate(R.layout.pictue_upload, parent, false));
picture = (ImageView) itemView.findViewById(R.id.imgToUpload);
tagEditText = (EditText) itemView.findViewById(R.id.tagEditText);
tagCurLoc = (Button) itemView.findViewById(R.id.tagCurLoc);
choosePic = (Button) itemView.findViewById(R.id.choosePic);
choosePic.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent galleryIntent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(galleryIntent, RESULT_LOAD_IMAGE);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (data == null) {
onActivityResult(requestCode, resultCode, data);
Toast.makeText(getActivity().getApplicationContext(), "Canceled ", Toast.LENGTH_SHORT).show();
} else {
if (requestCode == RESULT_LOAD_IMAGE) {
Uri selectedImgPath = data.getData();
picture.setImageURI(selectedImgPath);
RealFilePath = Uri.parse(String.valueOf(selectedImgPath));
Toast.makeText(getActivity().getApplicationContext(), " " + RealFilePath, Toast.LENGTH_SHORT).show();
}
}
}
});
uploadContent = (Button) itemView.findViewById(R.id.uploadContent);
}
}
/**
* Adapter to display recycler view.
*/
public class ContentAdapter extends RecyclerView.Adapter<ViewHolder> {
// Set numbers of List in RecyclerView.
private Context mContext;
public ContentAdapter(Context context) {
this.mContext = context;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
return new ViewHolder(LayoutInflater.from(parent.getContext()), parent);
}
#Override
public void onBindViewHolder(final ViewHolder holder, int position) {
}
#Override
public int getItemCount() {
return LENGTH;
}
}
Not sure if the onClick listener for the button should be implemented in the Adapter or the View holder, and from there the issue of onActivityResult cant be used ?
Weel, solved after some more reading and few try outs.
The onClick listener should be implemented at the ViewHolder class followed by
#Override
onActivityResult.
within the onClickListener onActivityResult invoked by;
startActivityForResult(intent, RESULT_LOAD_IMAGE);
and within onActivityResult;
onActivityResult(requestCode, resultCode, data);
Considering all of this taking place in an activity extending Fragment.
I'm trying to create simple app which contains of ten activities. Each activity look pretty much the same, it has four buttons (different color) and when one particular button is clicked it's open next activity. OnCreate method of every activity has mediaplayer that play name of that activity. After some time I see in LogCat that gc freed some objects and at that time Activity don't play any sound and buttons are disabled.
Do you have any advice or suggestions how to resole that?
Here is code of one Activity:
public class Green extends Activity {
int buttonActive = 0;
int buttonWrong = 0;
MediaPlayer player;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_green);
buttonWrong = 0;
playSound();
Button btn = (Button)findViewById(R.id.button1);
Button btn2 = (Button)findViewById(R.id.button2);
Button btn3 = (Button)findViewById(R.id.button3);
Button btn4 = (Button)findViewById(R.id.button4);
btn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(buttonActive == 1){
playSoundCorrect();
Intent intent = new Intent(v.getContext(),Blue.class);
startActivity(intent);
}
}
});
btn2.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if(buttonActive == 1 && buttonWrong == 0){
buttonWrong = 1;
playSoundWrong();
}
}
});
btn3.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if(buttonActive == 1 && buttonWrong == 0){
buttonWrong = 1;
playSoundWrong();
}
}
});
btn4.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if(buttonActive == 1 && buttonWrong == 0){
buttonWrong = 1;
playSoundWrong();
}
}
});
}
#Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
finish();
}
private void playSound(){
MediaPlayer player = MediaPlayer.create(this, R.raw.green);
player.start();
player.setOnCompletionListener(new OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mp) {
mp.release();
buttonActive = 1;
}
});
}
private void playSoundWrong(){
player = MediaPlayer.create(this, R.raw.wrong2);
if(!player.isPlaying()){
player.start();
}
player.setOnCompletionListener(new OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mp) {
mp.release();
buttonWrong = 0;
}
});
}
private void playSoundCorrect(){
MediaPlayer player = MediaPlayer.create(this, R.raw.correct);
player.start();
player.setOnCompletionListener(new OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mp) {
mp.release();
}
});
}
}
It looks like in private void playSound you're masking the class's player property. If you say player = MediaPlayer.create then the class's player property will be set to the new MediaPlayer, and the player will be reachable so long as the class is reachable. Instead you're saying MediaPlayer player = MediaPlayer.create, which is creating a new player variable that is scoped to the playSound method - once the method terminates the player is no longer reachable and will be garbage-collected, even if the class is still reachable.