Not able to implement OnBackPress

Not able to implement OnBackPress - android

I have below 2 Java class files (Main and Adapter).I want to stop audio when back button is pressed but my tries are exhausted.When the back button is pressed, it should go to a 3rd activity.So, I'm looking for help.Main class
public class myClass extends AppCompatActivity {
ViewPager viewPager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_one);
viewPager = (ViewPager) findViewById(R.id.pagerOne);
PagerAdapter viewPagerAdapter = new PagerAdapter(this);
viewPager.setAdapter(viewPagerAdapter);}
}
Adapter class
public class MyPagerAdapter extends PagerAdapter {
Context context;
LayoutInflater inflater;
MediaPlayer mp;
public int[] images = { R.drawable.img1,R.drawable.img2 };
public String[] title = { "Image1","Image2" };
public PagerAdapter(Context context) { this.context = context; }
#Override
public int getCount() { return title.length; }
#Override
public boolean isViewFromObject(View view, Object object) { return (view == object); }
#Override
public Object instantiateItem(ViewGroup container, final int position) {
inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.activity_custlayout,container,false);
ImageView slide = view.findViewById(R.id.myView);
TextView text= view.findViewById(R.id.txt);
slide.setImageResource(images[position]);
text.setText(title[position]);
releaseMediaPlayer();
view.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) { releaseMediaPlayer();
if (position == 0){ setupMediaPlayer(R.raw.lion); }
else if (position == 1){ setupMediaPlayer(R.raw.tiger); }
else { setupMediaPlayer(R.raw.tortoise);}
}
}); container.addView(view); return view;
}
#Override
public void destroyItem(ViewGroup container, int position, Object object) { releaseMediaPlayer(); container.removeView((ConstraintLayout)object); }
public void setupMediaPlayer(int resource) { mp = MediaPlayer.create(context, resource); mp.start(); }
public void releaseMediaPlayer() { if (mp != null) { mp.stop(); mp.release(); mp = null; } }
}
Unsuccessful tryI tried to release the audio from main class like below but it didn't work.
PagerAdapter pagerAdapter = new PagerAdapter(this);pagerAdapter.releaseMediaPlayer();

You should override onBackPressed() callback in your Main class and also make sure that you are using the same instance of PagerAdapter.
This is how you should do it
public class myClass extends AppCompatActivity {
ViewPager viewPager;
MyPagerAdapter myPagerAdapter; // Move the variable here
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_one);
viewPager = (ViewPager) findViewById(R.id.pagerOne);
myPagerAdapter = new MyPagerAdapter(this); // Modify this line
viewPager.setAdapter(viewPagerAdapter);}
}
#Override
protected void onBackPressed() {
myPagerAdapter.releaseMediaPlayer();
// Go to 3rd Activity
}
Anyway, you are calling PagerAdapter directly while actually you should use your own MyPagerAdapter.

Related

Auto slideshow loop with ViewPager

How would I turn my swipe-able ViewPager into a auto looping slideshow? I'v read other post referencing to use a Handler or Timer but I'm not sure which one would be best. Iv posted my code below.
Update:
After following some old posts and comments Iv been trying to initiate a timer to loop through the ViewPager slides. The issue is now the Timer is not working, also not getting any errors either. Any thoughts? Iv added the Timer code to the MainActivity code below.
MainActivity.java
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
ViewPager viewPager;
customSwipeAdapter swipeAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
viewPager = findViewById(R.id.viewPager);
swipeAdapter = new customSwipeAdapter(this);
viewPager.setAdapter(swipeAdapter);
Timer swipeTimer = new Timer();
swipeTimer.schedule(new TimerTask() {
#Override
public void run() {
runOnUiThread(new Runnable() {
#Override
public void run() {
int currentPage = 0;
int NUM_PAGES = 3;
if (currentPage == NUM_PAGES) {
currentPage = 0;
}
viewPager.setCurrentItem(currentPage++, true);
}
});
}
}, 500, 3000);
}
}
CustomSwipeAdapter.java
public class customSwipeAdapter extends PagerAdapter {
private int [] image_resources = {R.drawable.SlideOne,R.drawable.SlideTwo,R.drawable.SlideThr,R.drawable.SlideFour};
private Context context;
private LayoutInflater layoutInflater;
public customSwipeAdapter(Context context){
this.context = context;
}
#Override
public int getCount() {
return image_resources.length;
}
#Override
public boolean isViewFromObject(#NonNull View view, #NonNull Object object) {
return view == (LinearLayout)object;
}
#NonNull
#Override
public Object instantiateItem(#NonNull ViewGroup container, int position) {
layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View item_view = layoutInflater.inflate(R.layout.swipe_layout,container,false);
ImageView imageView = (ImageView) item_view.findViewById(R.id.imageView);
imageView.setImageResource(image_resources[position]);
container.addView(item_view);
return item_view;
}
#Override
public void destroyItem(#NonNull ViewGroup container, int position, #NonNull Object object) {
container.removeView((LinearLayout)object);
}
}

How to create a multi-step registration form using viewpager and multiple fragments?

I want to create a multi-step registration form in my android app. I wish to use the viewpager with multiple fragments and each fragment being a step in a registration.
At the end, I want to submit all the data submitted in each fragment using an activity to a mysql database. Can I get a small sample code for this?
This is what I have tried so far. I am able to implement a viewpager with multiple fragments. I have created an interface in the StepOne.java Fragment so as to communicate to an activity. But I am not able to retrieve data from these fragments. It throws a null-pointer exception on line 52.
Here is my code:
SliderActivity.java:
public class SliderActivity extends AppCompatActivity {
ViewPager viewPager;
EditText edName,edPassword, edConfPass;
TextView tvShowAll;
ViewPagerAdapter mPagerAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_slider);
viewPager = findViewById(R.id.view_pager);
mPagerAdapter = new ViewPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(mPagerAdapter);
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
#Override
public void onPageSelected(int position) {
}
#Override
public void onPageScrollStateChanged(int state) {
}
});
}
public void selectIndex(int newIndex) {
viewPager.setCurrentItem(newIndex);
}
#Override
public void onBackPressed() {
int currentPosition = viewPager.getCurrentItem();
if (currentPosition != 0) {
viewPager.setCurrentItem(viewPager.getCurrentItem()-1);
} else {
super.onBackPressed();
}
}
public class ViewPagerAdapter extends FragmentPagerAdapter {
public ViewPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
switch (position)
{
case 0:
return new StepOne();
case 1:
return new StepTwo();
case 2:
return new StepThree();
}
return null;
}
#Override
public int getCount() {
return 3; //three fragments
}
}
}
StepOne.java:
public class StepOne extends Fragment {
Button buttonInFragment1;
EditText edName;
public interface ActivityFragmentCallback {
void onSetName(String name);
}
ActivityFragmentCallback listener;
public StepOne() {
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
View rootView = inflater.inflate(R.layout.fragment_step_one, container, false);
edName = rootView.findViewById(R.id.edName);
buttonInFragment1 = rootView.findViewById(R.id.button_one);
if(buttonInFragment1 != null) {
buttonInFragment1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(getContext(),edName.getText().toString(),Toast.LENGTH_SHORT).show();
if(edName != null) {
listener.onSetName(edName.getText().toString());
}
switch (view.getId()){
case R.id.button_one:
((SliderActivity)getActivity()).selectIndex(1);
break;
}
}
});
}
return rootView;
}
#Override
public void onAttach(Context context){
super.onAttach(context);
try {
listener = (ActivityFragmentCallback)context;
}catch (ClassCastException c){
c.printStackTrace();
}
}
}
MessageActivity.java: Here is where I need all the data submitted from all the fragments
public class MessageActivity extends AppCompatActivity implements StepOne.ActivityFragmentCallback {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_message);
}
#Override
public void onSetName(String name){
// tvShowAll = findViewById(R.id.tvShowAll);
// tvShowAll.setText(name);
Toast.makeText(getApplicationContext(),name, Toast.LENGTH_LONG).show();
}
}

Below is some reference link for step by step registration;
Hope you have help
https://github.com/stepstone-tech/android-material-stepper
https://github.com/baoyachi/StepView?utm_source=android-arsenal.com&utm_medium=referral&utm_campaign=3774

ViewPager and 3 instantiates at once, video plays on its left image

I have a ViewPager in my Activity. I set it's adapter with PagerAdapter.
Items of Adapter are VideoViews and ImageViews. When I click on a thumbnail in another activity, ViewPager appears.
But, when page of an image is selected, video is playing in background because of default number of instantiations of ViewPager items (3)_left and right items of the active item.
Any ideas how to handle video playback while ViewPager is focused on image.
Here is how my Image is shown, the right item is a videoview and its MediaController.
Adapter class:
public class FullScreenViewAdapter extends PagerAdapter {
ActivityFullscreenSlideView _activity;
LayoutInflater inflater;
ArrayList<HashMap<String, Integer>> _media;
VideoView videosrc;
ImageView imageView;
MediaController mediaController;
View viewLayout;
public FullScreenViewAdapter(ActivityFullscreenSlideView activityFullscreenSlideView,
ArrayList<HashMap<String, Integer>> media) {
this._activity = activityFullscreenSlideView;
Collections.reverse(media);
this._media = media;
}
#Override
public int getCount() {
return _media.size();
}
#Override
public boolean isViewFromObject(View view, Object object) {
return view == ((LinearLayout) object);
}
#Override
public Object instantiateItem(ViewGroup container, int position) {
inflater = (LayoutInflater) _activity
.getSystemService(G.context.LAYOUT_INFLATER_SERVICE);
if (_media.get(position).get("type").equals(ActivityAppPage.IMAGE_TYPE)) {
viewLayout = inflater.inflate(R.layout.fullscreenview_image, container, false);
imageView = (ImageView) viewLayout.findViewById(R.id.fullscreenimage);
imageView.setImageResource(_media.get(position).get("src"));
} else if (_media.get(position).get("type").equals(ActivityAppPage.VIDEO_TYPE)) {
viewLayout = inflater.inflate(R.layout.fullscreenview_video, container, false);
videosrc = (VideoView) viewLayout.findViewById(R.id.video);
Uri videoAddress = Uri.parse("android.resource://" + _activity.getPackageName() + "/"
+ _media.get(position).get("src"));
videosrc.setVideoURI(videoAddress);
DisplayMetrics metrics = new DisplayMetrics();
_activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
videosrc.setLayoutParams(new LinearLayout.LayoutParams(metrics.widthPixels, LinearLayout.LayoutParams.WRAP_CONTENT));
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
mediaController = new MediaController(_activity);
mediaController.setAnchorView(videosrc);
videosrc.setMediaController(mediaController);
videosrc.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mp) {
mediaController.hide();
}
});
videosrc.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mp) {
Log.i("LOG", "\nonprepared");
mediaController.show(0);
videosrc.start();
}
});
}
} else {
videosrc.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mp) {
Log.i("LOG", "\nonprepared OLD API");
videosrc.start();
}
});
}
((ViewPager) container).addView(viewLayout);
return viewLayout;
}
#Override
public void destroyItem(ViewGroup container, int position, Object object) {
((ViewPager) container).removeView((LinearLayout) object);
}
My Activity that has ViewPager:
public class ActivityFullscreenSlideView extends AppCompatActivity
implements View.OnClickListener {
private FullScreenViewAdapter adapter;
private ViewPager viewPager;
int dotsCount;
ImageView[] dots;
LinearLayout pager_indicator;
ArrayList<Integer> viewPagersArray;
ArrayList<HashMap<String, Integer>> media;
ActivityFullscreenSlideView thisActivity = this;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fullscreen_viewpager);
viewPager = (ViewPager) findViewById(R.id.pager);
Intent i = getIntent();
viewPagersArray = (ArrayList<Integer>) i.getExtras().get("viewPagersArray");
int position = i.getIntExtra("position", 0);
media = (ArrayList<HashMap<String, Integer>>) i.getExtras().get("mAdapter.media");
adapter = new FullScreenViewAdapter(ActivityFullscreenSlideView.this, media);
viewPager.setAdapter(adapter);
int RtlPosition = media.size() - position - 1;
viewPager.setCurrentItem(RtlPosition);
pager_indicator = (LinearLayout) findViewById(R.id.viewPagerCountDots);
viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
#Override
public void onPageSelected(final int position) {
if (adapter.mediaController != null)
if (media.get(position).get("type").equals(ActivityAppPage.IMAGE_TYPE)) {
Log.i("LOG", "Image Selected");
adapter.mediaController.hide();
adapter.videosrc.stopPlayback();
} else if (media.get(position).get("type").equals(ActivityAppPage.VIDEO_TYPE)) {
Log.i("LOG", "Video Selected");
adapter.mediaController.show(0);
}
for (int i = 0; i < dotsCount; i++) {
dots[i].setImageDrawable(getResources().getDrawable(R.drawable.nonselecteditem_dot));
}
dots[position].setImageDrawable(getResources().getDrawable(R.drawable.selecteditem_dot));
}
#Override
public void onPageScrollStateChanged(int state) {
}
});
setUiPageViewController(RtlPosition);
}

I found what I had to do. I just used "setOnFocusChangeListener" in my Adapter.
videosrc.setOnFocusChangeListener(new View.OnFocusChangeListener() {
#Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus)
videosrc.start();
else
videosrc.stopPlayback();
}
});
And also I removed "OnPreparedListener".

Remove all other coding related to play video when the page is active. Only make these changes in adaptive, it's working for me.
videosrc.setOnFocusChangeListener(new View.OnFocusChangeListener() {
#Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus)
((VideoView)v.findViewById(R.id.videoView).start();
else
((VideoView)v.findViewById(R.id.videoView).pause();
});

android ViewPager starts at a wrong random location after reload

I am writing a simple view pager test app that loads a bunch of data from a website and creates pages to display them.
For the most part the displaying is pretty much all works. However, it falls apart when I load a new set of data to display. When I get a new set, it loads all the data perfectly well however, instead of starting from view 0 it starts at a random location. It could start at the end or somewhere in the middle.
I want all the data to load from page 1, like a book. If you load a new book the book should start from page 1 not a random page.
Reloading calls
I've tried using GotCampDetails() which sets the local variable in the class.
viewPager.setCurrentItem(0);
in my fragment but it doesn't work. Also called notifydatasetchanged() on my adapter, still didn't work.
What am I missing?
public class ViewPagerFragment extends Fragment implements WebReadResultsListener {
private ArrayList<HashMap<String, String>> campDetails;
CustomPagerAdapter adapter;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.camp_viewpager, container, false);
}
#Override
public void onViewCreated(View view, Bundle savedInstanceState) {
if (campDetails != null && ! campDetails.isEmpty()) {
ViewPager viewPager = (ViewPager) view.findViewById(R.id.viewpager);
adapter = new CustomPagerAdapter(getActivity(), campDetails, viewPager);
viewPager.setAdapter(adapter);
viewPager.setPageTransformer(true, new ZoomOutPageTransformer());
}
}
#Override
public boolean GotCampDetails(ArrayList<HashMap<String, String>> campDetails) {
this.campDetails = campDetails;
return true;
}
#Override
public boolean GotCampList(ArrayList<HashMap<String, String>> campDetails) {
return false;
}
#Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
getFragmentManager().putFragment(outState,"fragmentInstanceSaved",getFragmentManager().findFragmentById(R.id.content));
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Handle orientation changes here
}
}
Adapter:
public class CustomPagerAdapter extends PagerAdapter implements ColorChangeListener {
private ArrayList<HashMap<String, String>> campDetails;
private ViewGroup collection;
private Context mContext;
private boolean isRunning = false;
private ColorChangeListener colorChangeListener;
private int color= pink;
private int currentposition;
private ViewPager viewPager;
public CustomPagerAdapter(Context context, final ArrayList<HashMap<String, String>> campDetails, ViewPager viewPager) {
this.campDetails=campDetails;
this.mContext = context;
this.viewPager = viewPager;
colorChangeListener = (ColorChangeListener) mContext;
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageSelected(int pos) {
currentposition = pos;
if (campDetails.get(currentposition).get("color").equals("green")) {
color = green;
} else {
color = pink;
}
ColorAppBar(color);
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
#Override
public void onPageScrollStateChanged(int arg0) {
}
});
}
#Override
public Object instantiateItem(ViewGroup collection, final int position) {
LayoutInflater inflater = LayoutInflater.from(mContext);
ViewGroup layout = (ViewGroup) inflater.inflate(R.layout.child_item, collection, false);
if (campDetails.size() <= 0) {
Toast.makeText(mContext, "Error in getting camp details", Toast.LENGTH_SHORT).show();
return null;
}
if (campDetails.get(position).get("description").equals("RD") ) {
layout.setBackgroundColor(mContext.getResources().getColor(green));
} else {
layout.setBackgroundColor(mContext.getResources().getColor(pink));
}
collection.addView(layout);
this.collection = collection;
TextView eName = (TextView) layout.findViewById(R.id.en);
TextView nEName= (TextView) layout.findViewById(R.id.nen);
TextView textView6 = (TextView) layout.findViewById(R.id.textView6);
// ImageView nextImg = (ImageView) groupLayout.get(index).findViewById(R.id.nextImg);
eName.setText(campDetails.get(position).get("name"));
if (position+1 < campDetails.size()) {
nEName.setText(campDetails.get(position+1).get("name"));
textView6.setVisibility(View.VISIBLE);
} else {
nEName.setText("You are DONE!!");
textView6.setVisibility(View.INVISIBLE);
}
return layout;
}
#Override
public void destroyItem(ViewGroup collection, int position, Object view) {
collection.removeView((View) view);
}
#Override
public int getCount() {
return campDetails.size();
}
#Override
public boolean isViewFromObject(View view, Object object) {
return view == object;
}
#Override
public CharSequence getPageTitle(int position) {
return campDetails.get(position).get("name");
}
#Override
public void ColorAppBar(int color) {
colorChangeListener.ColorAppBar(color);
}
}

I finally managed to get it done.
I had to delay the function call setCurrentItem by a few milliseconds. Race condition? I don't know why this is the case but now it works perfectly.
Here is what I added in case someone else may find it useful:
pager.postDelayed(new Runnable() {
#Override
public void run() {
pager.setCurrentItem(pos);
}
}, 100);

I'm having trouble following the details well enough to pinpoint the problem, but this guy seems to have accomplished what you're trying to do: dynamically add and remove view to viewpager
hope it helps

return activity result from a ViewPager

Am using a ViewPager with adapter to show some pictures (as a gallery) and I need to return the name of the picture when the user click above
my problem that I can not implement onclick from the adapter because I can't return the result to the calling activity, and when I implement the viewAdapter.addOnPageChangeListener I have to wait until the page is changed so if the user clicks on the first pic it well not work
here is my code:
for(int i=0;i<images.length;i++)
imagesArray.add(images[i]);
MyAdapter myAdapter = new MyAdapter(MyImagePicker.this,imagesArray);
mPager = (ViewPager) findViewById(R.id.pager);
mPager.setAdapter(myAdapter);
//CircleIndicator indicator = (CircleIndicator) findViewById(R.id.indicator);
//indicator.setViewPager(mPager);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);
tabLayout.setupWithViewPager(mPager, true);
mPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener()
{
#Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
#Override
public void onPageSelected(int position) {
Toast.makeText(getApplicationContext()," pos : "+position,Toast.LENGTH_LONG).show();
// return result //
}
#Override
public void onPageScrollStateChanged(int state) {
}
});
}
}
class MyAdapter extends PagerAdapter {
private ArrayList<Integer> images;
private LayoutInflater inflater;
private Context context;
public MyAdapter(Context context, ArrayList<Integer> images) {
this.context = context;
this.images=images;
inflater = LayoutInflater.from(context);
}
#Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView((View) object);
}
#Override
public int getCount() {
return images.size();
}
#Override
public Object instantiateItem(ViewGroup view, int position) {
View myImageLayout = inflater.inflate(R.layout.slider, view, false);
final ImageView myImage = (ImageView) myImageLayout
.findViewById(R.id.image);
myImage.setImageResource(images.get(position));
myImage.setTag(position+1);
myImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(context," pos : "+view.getTag(),Toast.LENGTH_LONG).show();
}
});
view.addView(myImageLayout, 0);
return myImageLayout;
}
#Override
public boolean isViewFromObject(View view, Object object) {
return view.equals(object);
}
}

There are a few approaches you could take:
1) Create a callback interface. In your activity implement the interface (create a listener) and pass it into the adapter's constructor, when the user clicks on an image, pass the image name back to the activity using the callback (mlistener.onImageChosen(view.getTag()).
public interface ImageChosenListener
{
void onImageChosen(String image);
}
2) Use a broadcast from the adapter and have a broadcast receiver in your activity.

try this.
mPager.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
switch(mPager.getCurrentItem()){
case 0: // its position 0
//somthing
break;
.
.
.
}
});

Thanks jt-gilkeson,
I think using a callBack interface is the perfect and the easiest solution :
Here is my answer :
// Create a callBack interface
public interface CallBack {
void callBack(String pos);
}
// The activity hosting my picture gallery
public class MyImagePicker extends Activity implements CallBack {
private static ViewPager mPager;
private static final Integer[] images= {R.drawable.p1,R.drawable.p2,R.drawable.p3,R.drawable.p4};
private ArrayList<Integer> imagesArray = new ArrayList<Integer>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.galery_image_chooser);
init();
}
private void init() {
for(int i=0;i<images.length;i++)
imagesArray.add(images[i]);
MyAdapter myAdapter = new MyAdapter(MyImagePicker.this,imagesArray,this);
mPager = (ViewPager) findViewById(R.id.pager);
mPager.setAdapter(myAdapter);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);
tabLayout.setupWithViewPager(mPager, true);
}
// Implement the call back function
public void callBack(String pos){
//return back result
Intent intent=new Intent();
intent.putExtra("imgName",pos);
setResult(2,intent);
finish();//finishing activity
}
}

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

Not able to implement OnBackPress - android

Related

Auto slideshow loop with ViewPager

How to create a multi-step registration form using viewpager and multiple fragments?

ViewPager and 3 instantiates at once, video plays on its left image

android ViewPager starts at a wrong random location after reload

return activity result from a ViewPager

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