Develop Reference

Refresh fragment instead of main activity

I'm trying to implement the "swipe to refresh" in my fragment. I did it by inserting a timer in my main activity, by using the Timer class, which refresh, but I would like to improve it by implementing a function directly inside the fragment itself. This is the code:
public class HomeFragment extends Fragment {
private RecyclerView recyclerView;
public HomeFragment() {
}
public static HomeFragment newInstance(String param1, String param2) {
HomeFragment fragment = new HomeFragment();
Bundle args = new Bundle();
fragment.setArguments(args);
return fragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.main_fragment, container, false);
recyclerView = view.findViewById(R.id.rc_view);
loadMovie();
return view;
}
private void loadMovie() {
ApiService apiService = ApiBuilder.getClient(getContext()).create(ApiService.class);
recyclerView.setLayoutManager(new LinearLayoutManager(getContext(),LinearLayoutManager.HORIZONTAL, false));
Call<MovieResponse> call = apiService.getDiscover(BuildConfig.API_KEY,Values.LANGUAGE,Values.SORT_BY[0], Values.ADULT, Values.GENRE[1], Values.PAGE[0]);
call.enqueue(new Callback<MovieResponse>() {
#Override
public void onResponse(Call<MovieResponse>call, Response<MovieResponse> response) {
final List<MovieModel> movies = response.body().getResults();
recyclerView.setAdapter(new MoviesAdapter(movies, R.layout.content_main, getContext()));
recyclerView.addOnItemTouchListener(new RecyclerView.OnItemTouchListener() {
GestureDetector gestureDetector = new GestureDetector(getContext(), new GestureDetector.SimpleOnGestureListener() {
public boolean onSingleTapUp(MotionEvent e){
return true;
}
});
#Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
View child = rv.findChildViewUnder(e.getX(), e.getY());
if (child != null && gestureDetector.onTouchEvent(e)){
int position = rv.getChildAdapterPosition(child);
Intent i = new Intent(getContext(), DetailActivity.class);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.putExtra(DetailActivity.EXTRA_TITLE, movies.get(position).getTitle());
i.putExtra(DetailActivity.EXTRA_OVERVIEW, movies.get(position).getOverview());
i.putExtra(DetailActivity.EXTRA_TIME, movies.get(position).getReleaseDate());
i.putExtra(DetailActivity.EXTRA_POSTER, movies.get(position).getPosterPath());
i.putExtra(DetailActivity.EXTRA_LANGUAGE, movies.get(position).getOriginalLanguage());
try{
List<Integer> genr = movies.get(position).getGenreIds();
i.putExtra(DetailActivity.EXTRA_GENRES, genr.toString());
} catch (Exception ex) {
ex.printStackTrace();
}
getContext().startActivity(i);
}
return false;
}
#Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
#Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
});
if (movies != null ){
MovieModel firstMovie = movies.get(0);
if(firstMovie != null) {
Log.i("TAG", firstMovie.getTitle());
}
}
}
#Override
public void onFailure(Call<MovieResponse>call, Throwable t) {
}
});
}
}
This is the Timer I implemented in the main activity, which I want to remove:
TimerTask timertask = new TimerTask() {
#Override
public void run() {
handler.post(new Runnable() {
public void run() {
startService(new Intent(MainActivity.this, TimerService.class));
}
});
}
};
Timer timer = new Timer();
timer.schedule(timertask, 0, 10*SECONDS);
EDIT:
I updated my code by implementing the SwipeRefreshLayout inside the onCreate method but it still doesn't works:
mPullToRefresh = view.findViewById(R.id.swipe_list);
final Handler handler = new Handler();
mPullToRefresh.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh() {
handler.postDelayed(new Runnable() {
#Override
public void run() {
loadMovie(); //load your moview from here
mPullToRefresh.setRefreshing(false);
}
}, 1000);
}
});
This is my fragment layout updated:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Movies"
android:layout_marginLeft="#dimen/_10sdp"
android:layout_marginRight="#dimen/_10sdp"
android:textSize="#dimen/_20ssp"
android:textStyle="bold"
android:textColor="#ffffff"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/_5sdp"
android:text="Action"
android:layout_marginLeft="#dimen/_10sdp"
android:layout_marginRight="#dimen/_10sdp"
android:textSize="#dimen/_12ssp"
android:textColor="#color/colorAccent"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="#dimen/_150sdp"
android:layout_marginTop="#dimen/_10sdp"
android:orientation="vertical">
<androidx.recyclerview.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:id="#+id/rc_view"/>
</LinearLayout>
<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
android:id="#+id/swipe_list"
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recycler_view_list"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
</LinearLayout>

There is a Layout to implement the functionality.
Put this in your fragment xml file:-
<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
android:id="#+id/swipe_list"
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recycler_view_list"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
Now in your Fragment:-
1) do the
SwipeRefreshLayout mPullToRefresh = view.findViewById(R.id.swipe_list)
2) then,
mPullToRefresh.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh() {
mHandler.postDelayed(new Runnable() {
#Override
public void run() {
loadMovie(); //load your moview from here
mPullToRefresh.setRefreshing(false);
}
}, 1000);
}
});
Please Up-Vote If Found Useful.

How to access Switch button that is declared in MainActivity(layout) in BroadcastReceivers

I have a task in which i have to change state of Switch button when airplane mode is ON/OFF.
I have a main activity in which i declared Switch Button and i want to Change the state on/off of Switch from BroadcastReceiver Class
Receiver
public class MyReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
boolean isAirplaneModeOn = intent.getBooleanExtra("state", false);
if(isAirplaneModeOn){
What Should i do ?
}
}
}
layout_main_activity
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.hp.broadcastthroughmanifest.MainActivity">
<Switch
android:id="#+id/switch1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="127dp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:layout_constraintLeft_creator="1"
tools:layout_constraintRight_creator="1"
tools:layout_constraintTop_creator="1" />
</android.support.constraint.ConstraintLayout>

Try using an event bus like this one to post the event to the activity. From the activity, when you receive the event, you change the state of the switch.
Something like this:
- Your broadcast class:
public class MyReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
boolean isAirplaneModeOn = intent.getBooleanExtra("state", false);
if(isAirplaneModeOn){
EventBus.getDefault().post(new SwitchEvent());
}
}
}
The activty's class:
public class YourActivity{
//declare your switch
#Override
public void onCreate() {
setContentView(R.layout.layout_main_activity);
//initialize your switch
}
#Override
public void onStart() {
super.onStart();
EventBus.getDefault().register(this);
}
#Override
public void onStop() {
super.onStop();
EventBus.getDefault().unregister(this);
}
#Subscribe(threadMode = ThreadMode.MAIN)
public void onMessageEvent(SwitchEvent event) {
//update your switch element
}
}
The event's class:
Public class SwitchEvent{
public SwitchEvent(){
//empty
}
}

ViewPropertyAnimator - animation wouldn't happen the first time

I'm using the following code for a slide in / slide out toggle for an AppBarLayout.
public void showToolbar(boolean show) {
if (appBar == null) {
Log.e(TAG, "showToolbar: Toolbar is null");
return;
}
boolean toolbarShown = Utils.isViewVisible(appBar);
Log.d(TAG, "showToolbar: shown:" +shown);
boolean changed = (show != toolbarShown);
if (changed) {
if (show) {
Log.d(TAG, "showToolbar: showing");
appBar.setVisibility(View.VISIBLE);
appBar.animate()
.translationY(0)
.setInterpolator(new DecelerateInterpolator())
.setListener(new Animator.AnimatorListener() {
#Override
public void onAnimationStart(Animator animator) {
appBar.setVisibility(View.VISIBLE);
}
#Override
public void onAnimationEnd(Animator animator) { }
#Override
public void onAnimationCancel(Animator animator) { }
#Override
public void onAnimationRepeat(Animator animator) { }
})
.start();
} else {
Log.d(TAG, "showToolbar: hiding");
appBar.animate()
.translationY(-toolbar.getBottom())
.setInterpolator(new DecelerateInterpolator())
.setListener(new Animator.AnimatorListener() {
#Override
public void onAnimationStart(Animator animator) { }
#Override
public void onAnimationEnd(Animator animator) {
appBar.setVisibility(View.INVISIBLE);
}
#Override
public void onAnimationCancel(Animator animator) { }
#Override
public void onAnimationRepeat(Animator animator) { }
})
.start();
}
} else {
Log.d(TAG, "showToolbar: no change");
}
}
The animation works perfectly except for the first time showToolbar(true) is called to show the toolbar. The view just shows up without animation the first time. I have scoured the site and found similar questions but the solutions doesn't seem to be working for me.
It might be worth noting that this happens only when we want the appBar to be hidden first. My guess is that maybe for the animation to
Update 1:
public static boolean isViewVisible(View view) {
if (View.VISIBLE == view.getVisibility()) return true;
else return false;
}
Update 2
I have removed isViewWithinScreenBounds() method because that check isn't really needed.

Be sure to set the initial values for visibility and translationY.
If you want your toolbar to be initially hidden and show up with the first animation, be sure to set android:visibility="invisible" and NOT "gone", and negative android:translationY like -56dp.

Try with this
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:translationY="-120dp"
android:layout_height="120dp">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="SOME TEXT HERE" />
</android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>
Activity code
#BindView(R.id.app_bar)
AppBarLayout appBar;
#BindView(R.id.toolbar)
Toolbar toolbar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.some_layout);
ButterKnife.bind(this);
setSupportActionBar(toolbar);
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
animateToolbar(false); //Just for testing purpose - delay execute of function animateToolbar() for 4 seconds
}
}, 4000);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
animateToolbar(true);
return super.onCreateOptionsMenu(menu);
}
private void animateToolbar(boolean show) {
if (show) {
// As you can see in the xml layout initial position of the appBar is translated by its height to the top of the screen "-" sign
// Slide int from out of the screen to initial position -> from -120 dp (height of the app bar, see xml) to 0 dp
appBar.animate()
.translationY(0)
.setDuration(1000)
.start();
} else {
// Slide out from initial position to the top of the screen -> from 0 dp to -120 dp (height of the app bar, see xml)
appBar.animate()
.translationY(-appBar.getHeight())
.setDuration(1000)
.start();
}
}

How to give number of seekbar on android

How to give number of seekbar on android.
please answer to my question becouse I need it.
Thank you
Xml:
<SeekBar
android:id="#+id/seekBar1"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
Java:
public class Setting extends ActionBarActivity implements OnClickListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_setting);
}
}

You can use "DiscreteSeekBar" from below url:
https://github.com/AnderWeb/discreteSeekBar
Thanks.

First, set a max value for the SeekBar in XML.
Add the following attribute to the SekkBar:
android:max="40"
Then in code:
SeekBar seekBar1 = (SeekBar) findViewById(R.id.seekBar1);
int currentValue = seekBar1.getProgress();
getProgress() will return the current value (from 0 to 40);
But you should use a listener for changes and get new value:
seekBar1.setOnSeekBarChangeListener(new OnSeekBarChangeListener()
{
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
{
currentValue = progress;
}
public void onStartTrackingTouch(SeekBar seekBar) {
}
public void onStopTrackingTouch(SeekBar seekBar)
{
}
});

Try this for 100 number as maximum seek:
<SeekBar
android:id="#+id/seekBar1"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="26dp"
android:max="100"/>
Selection of seek bar,
onProgressChanged provide real time selection change as you seek, but when you stop then onProgressStop is encountered, then do as you want :
seekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
int progress = 0;
#Override
public void onProgressChanged(SeekBar seekBar, int progresValue, boolean fromUser) {
progress = progresValue;
textView.setText(progress + "/" + seekBar.getMax());
}
#Override
public void onStartTrackingTouch(SeekBar seekBar) {
// Do something here, if you want to do anything at the start of
// touching the seekbar
}
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
// Display the value in textview
textView.setText(progress + "/" + seekBar.getMax());
}
});

Image is not changing in ImageView

I want to change image after some animation to first image. I am trying with this code but only the second image is getting animated. First image is not displaying.
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
anim();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
public void anim() {
Animation animfadein =AnimationUtils.loadAnimation(this,R.anim.fadein);
Animation animfadeout =AnimationUtils.loadAnimation(this,R.anim.fadeout);
findViewById(R.id.imageView1).startAnimation(animfadein);
findViewById(R.id.imageView1).startAnimation(animfadeout);
Context myActivity =getApplicationContext();
Toast.makeText(myActivity, "Please wait", Toast.LENGTH_SHORT).show();
button();
}
public void button() {
ImageView imgView1 = (ImageView)findViewById(R.id.imageView1);
Drawable myDrawable = getResources().getDrawable(R.drawable.start);
imgView1.setImageDrawable(myDrawable);
}
}
My xml file is like this
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/background"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<ImageView
android:id="#+id/imageView1"
android:contentDescription="#string/description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_logo"/>
</LinearLayout>
I tried using setImageresource still same first image is not displaying.
Please let me know what mistake i have done.Thanks in advance :)

You are running everything in onCreate which is done before the user is even able to see any of the UI. It is until onStart that the user will see the UI. even so, the change will be almost immediate, so you might want to wait a few secs. Try this:
#Override
protected void onStart() {
super.onStart();
new Thread(new Runnable() {
#Override
public void run() {
try {
Thread.sleep(5000);
runOnUiThread(new Runnable() {
#Override
public void run() {
anim();
}
});
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}).start();
}
In general you are making a thread wait 5 secs then do the animation. I am not going to go over what's the best way to do this, but you certainly need to modify this on the UI thread, so I included it in the snippet.
For more information about threading go here:
http://www.vogella.com/tutorials/AndroidBackgroundProcessing/article.html

You will need to use animation listener for achieving this:
animFadeIn.setAnimationListener(new AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {
// TODO Auto-generated method stub
}
#Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub
}
#Override
public void onAnimationEnd(Animation animation) {
//start animFadeOut Here
}
});
Hope this helps.