I am trying to get the text view to zoomin/out 4 times one by one. It works only once and then just dies.
public class MainActivity extends Activity implements AnimationListener {
Animation zoomin, zoomout;
TextView text;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
text = (TextView) findViewById(R.id.text);
runOnUiThread(new Runnable() {
#Override
public void run() {
for (int i = 0; i < 4; i++) {
zoomin = AnimationUtils.loadAnimation(MainActivity.this,
R.anim.zoomin);
zoomin.setAnimationListener(MainActivity.this);
zoomout = AnimationUtils.loadAnimation(MainActivity.this,
R.anim.zoomout);
text.setAnimation(zoomin);
text.setAnimation(zoomout);
text.startAnimation(zoomin);
try {
Thread.sleep(500);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
});
}
#Override
public void onAnimationEnd(Animation animation) {
text.startAnimation(zoomout);
}
}
change
text.startAnimation(zoonout);
to
text.startAnimation(zoomin);
Hope it helps u. Have a nice day.
Related
I am very new to Android programming. I can't find a solution for my current problem which I've been trying to solve for days.
I want to click on item of populated Array List and get the position i.e. the searched word result in Cardview (neither ItemClickListener nor OnSuggestionListener did work here. Here is my code of MainActivity and I would be very thankful if somebody could help me out:
RecyclerView recyclerView;
RecyclerView.LayoutManager layoutManager;
SearchAdapter adapter;
MaterialSearchBar materialSearchBar;
List<String> suggestList = new ArrayList<>();
Database database;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//init View
recyclerView = (RecyclerView) findViewById(R.id.recycler_search);
layoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
recyclerView.setHasFixedSize(true);
materialSearchBar = (MaterialSearchBar) findViewById(R.id.search_bar);
database = new Database(this);
materialSearchBar.setHint("Search");
materialSearchBar.setCardViewElevation(10);
loadSuggestList();
materialSearchBar.addTextChangeListener (new TextWatcher() {
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
List<String> suggest = new ArrayList<>();
for (String search : suggestList) {
if (search.toLowerCase().contains(materialSearchBar.getText().toLowerCase()))
suggest.add(search);
}
materialSearchBar.setLastSuggestions(suggest);
}
#Override
public void afterTextChanged(Editable s) {
}
});
materialSearchBar.setOnSearchActionListener (new MaterialSearchBar.OnSearchActionListener() {
#Override
public void onSearchStateChanged(boolean enabled) {
if (!enabled)
adapter = new SearchAdapter(getBaseContext(), database.getLughats());
recyclerView.setAdapter(adapter);
}
#Override
public void onSearchConfirmed(CharSequence text) {
startSearch(text.toString());
}
#Override
public void onButtonClicked(int buttonCode) {
}
});
adapter = new SearchAdapter(this, database.getLughats());
recyclerView.setAdapter(adapter);
}
private void startSearch(String text) {
adapter = new SearchAdapter(this, database.getLughatByWort(text));
recyclerView.setAdapter(adapter);
}
private void loadSuggestList() {
suggestList = database.getWorts();
materialSearchBar.setLastSuggestions(suggestList);
}
}```
Let me know if I should post here also my AdapterCode for the ViewHolder.
Thank you for your help in advance!
Here ist my AdapterCode:
class SearchViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
RecyclerItemClick itemClickListener;
public TextView wort, praeteritum, partizip2, artikelGrammatik, uebersetzung1, uebersetzung2;
public ImageButton button1, button2;
public SearchViewHolder(#NonNull View itemView) {
super(itemView);
wort = (TextView)itemView.findViewById(R.id.wort);
praeteritum = (TextView)itemView.findViewById(R.id.praeteritum);
partizip2 = (TextView)itemView.findViewById(R.id.partizip2);
artikelGrammatik = (TextView)itemView.findViewById(R.id.artikelGrammatik);
uebersetzung1 = (TextView)itemView.findViewById(R.id.uebersetzung1);
uebersetzung2 = (TextView)itemView.findViewById(R.id.uebersetzung2);
button1 = (ImageButton)itemView.findViewById(R.id.button_id_1);
button2 = (ImageButton) itemView.findViewById(R.id.button_id_2);
itemView.setOnClickListener(this);
}
#Override
public void onClick(View v) {
this.itemClickListener.onItemClickListener(v, getLayoutPosition());
}
public void setItemClickListener(RecyclerItemClick ic) {
this.itemClickListener = ic;
}
}
public class SearchAdapter extends RecyclerView.Adapter<SearchViewHolder> {
private Context context;
private List<Lughat> lughats;
public SearchAdapter(Context context, List<Lughat> lughats) {
this.context = context;
this.lughats = lughats;
}
#NonNull
#Override
public SearchViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
final View itemView = inflater.inflate(R.layout.layout_item, parent, false);
return new SearchViewHolder(itemView);
}
#Override
public void onBindViewHolder(#NonNull final SearchViewHolder holder, final int position) {
holder.wort.setText(lughats.get(position).getWort());
holder.praeteritum.setText(lughats.get(position).getPraeteritum());
holder.partizip2.setText(lughats.get(position).getPartizip2());
holder.artikelGrammatik.setText(lughats.get(position).getArtikelGrammatik());
holder.uebersetzung1.setText(lughats.get(position).getUebersetzung1());
holder.uebersetzung2.setText(lughats.get(position).getUebersetzung2());
CharSequence praet;
praet = holder.praeteritum.getText();
if (praet.length() == 0) {
holder.praeteritum.setVisibility(View.GONE);
holder.button1.setVisibility(View.GONE);
} else {
holder.praeteritum.setVisibility(View.VISIBLE);
holder.button1.setVisibility(View.VISIBLE);
}
CharSequence part2;
part2 = holder.partizip2.getText();
if (part2.length() == 0) {
holder.partizip2.setVisibility(View.GONE);
} else {
holder.partizip2.setVisibility(View.VISIBLE);
}
CharSequence artGr;
artGr = holder.artikelGrammatik.getText();
if (artGr.length() == 0) {
holder.artikelGrammatik.setVisibility(View.GONE);
holder.button2.setVisibility(View.GONE);
} else {
holder.artikelGrammatik.setVisibility(View.VISIBLE);
holder.button2.setVisibility(View.VISIBLE);
}
CharSequence ueb2;
ueb2 = holder.uebersetzung2.getText();
if (ueb2.length() == 0) {
holder.uebersetzung2.setVisibility(View.GONE);
} else {
holder.uebersetzung2.setVisibility(View.VISIBLE);
}
holder.button1.setOnClickListener(new ToastMaker(context.getApplicationContext()));
holder.button2.setOnClickListener(new ToastMaker(context.getApplicationContext()));
holder.setItemClickListener(new RecyclerItemClick() {
#Override
public void onItemClickListener(View v, int position) {
Toast.makeText(context, "Begriff", Toast.LENGTH_LONG).show();
}
});
}
#Override
public int getItemCount() {
return lughats.size();
}
}
If I do it also with OnClickListener it does not work too, it does not call the method startSearch.
button3.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
CharSequence text = materialSearchBar.getText();
Toast.makeText(getApplicationContext(), text, Toast.LENGTH_LONG).show();
startSearch(text.toString());
}
I am searching a string when i click on search icon its work properly and i get a list.. but when i click on keyboard search icon API not hit its shows Failure every time because it cannot get a parameter.i searched but i cannot get solution and also i want to know that what is actionid . please suggest me. My code is here:-.
public class Medicine_search_price extends AppCompatActivity {
public static RecyclerView Recycle_medicine;
Search_medicine model;
ImageView search_medicine1, Medicine_cart, backarrow;
public static ImageView noproduct;
List<Result> mArray_patient_deatil = new ArrayList<Result>();
public static EditText edit_search_medicine;
Adapter_medicine_view medicine;
public static TextView mTitle;
String user_id, count, search_medicine;
RelativeLayout relativeLayout;
LinearLayout mainlayout;
ProgressBar progressBar;
Dialog dialog;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_medicine_search_price);
DATAGET();
FINDVIEWBYID();
CLICKLISTINER();
}
private void DATAGET() {
user_id = M.getNumber(getApplicationContext());
count = M.getStatus(getApplicationContext());
}
private void FINDVIEWBYID() {
noproduct = (ImageView) findViewById(R.id.no_product_found);
progressBar = (ProgressBar) findViewById(R.id.proress_bar);
backarrow = (ImageView) findViewById(R.id.medicine_search_price_arrow);
edit_search_medicine = (EditText) findViewById(R.id.search_medicine_txt);
search_medicine1 = (ImageView) findViewById(R.id.search_medicine_b);
Recycle_medicine = (RecyclerView) findViewById(R.id.rcy_medicine_search);
relativeLayout = (RelativeLayout) findViewById(R.id.badge_layout1);
Toolbar toolbarTop = (Toolbar) findViewById(R.id.toolbar);
mTitle = (TextView) toolbarTop.findViewById(R.id.badge_notification_1);
mainlayout = (LinearLayout) findViewById(R.id.mainLayout);
Medicine_cart = (ImageView) toolbarTop.findViewById(R.id.medicine_search_cart);
}
private void CLICKLISTINER() {
mTitle.setText(count);
relativeLayout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent mIntent = new Intent(Medicine_search_price.this, Preview_screen.class);
startActivity(mIntent);
}
});
search_medicine1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
search_medicine = edit_search_medicine.getText().toString();
if (search_medicine.length() <= 2) {
Toast.makeText(Medicine_search_price.this, "Please Enter Atleast Three Characters", Toast.LENGTH_SHORT).show();
} else {
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(mainlayout.getWindowToken(), 0);
getdata(search_medicine);
}
}
});
backarrow.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent mIntent = new Intent(Medicine_search_price.this, MainActivity.class);
startActivity(mIntent);
}
});
edit_search_medicine.setOnEditorActionListener(new TextView.OnEditorActionListener() {
#Override
public boolean onEditorAction(TextView textView, int actionid, KeyEvent keyEvent) {
if (actionid== EditorInfo.IME_ACTION_SEARCH) {
getdata(search_medicine);
}
return false;
}
});
}
private void getdata(String search) {
progressBar.setVisibility(View.VISIBLE);
RestAdapter restAdapter1 = new RestAdapter.Builder().setEndpoint(AppConst.MAIN).build();
final UsersAPI searchmedicine = restAdapter1.create(UsersAPI.class);
searchmedicine.pproducts(search, new Callback<FinalSearchMedicine>() {
#Override
public void success(FinalSearchMedicine searchmedicineModel, Response response) {
Integer status = searchmedicineModel.getSuccess();
if (status == 1) {
mArray_patient_deatil = searchmedicineModel.getResult();
Recycle_medicine.setVisibility(View.VISIBLE);
medicine = new Adapter_medicine_view(Medicine_search_price.this, mArray_patient_deatil);
LinearLayoutManager layoutManager1 = new GridLayoutManager(Medicine_search_price.this, 2);
Recycle_medicine.setLayoutManager(layoutManager1);
Recycle_medicine.setAdapter(medicine);
Toast.makeText(Medicine_search_price.this, "" + mArray_patient_deatil.size() + " " + "Products", Toast.LENGTH_SHORT).show();
progressBar.setVisibility(View.GONE);
}
}
#Override
public void failure(RetrofitError error) {
Toast.makeText(Medicine_search_price.this, "Failureeeee", Toast.LENGTH_SHORT).show();
progressBar.setVisibility(View.GONE);
}
});
}
}
i get my answer so silly mistake. search_medicine is null every time because cannot get string from edit text on action button click..
if (i == EditorInfo.IME_ACTION_SEARCH) {
search_medicne=edit_search_medicine.getText().toString();
getdata(search_medicne);
}
I have a simple fragment which retrieve data from Firebase database.
I use firebase recycler view to display retrieving data. And after scrolling or screen rotation I can't force recycler view (or linear layout manager) restore scroll position.
I found here some answers but they don't work.
My code is:
public class NewsListFragment extends ParentNewsFragment {
static int color_naval, color_black;
private boolean mProcessLikes = false;
private DatabaseReference mDatabaseLikes;
private DatabaseReference mDatabaseViews;
private FirebaseAuth mAuth;
private int position = 0;
public static NewsListFragment getInstance() {
return new NewsListFragment();
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mDatabaseReference = FirebaseDatabase.getInstance().getReference()
.child("App_news");
mDatabaseLikes = FirebaseDatabase.getInstance().getReference().child("news_likes");
mDatabaseViews = FirebaseDatabase.getInstance().getReference().child("news_views");
mAuth = FirebaseAuth.getInstance();
mQuery = mDatabaseReference.orderByChild("pos").startAt("100");
color_naval = getResources().getColor(R.color.colorPrimary);
color_black = getResources().getColor(R.color.colorBlack);
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.rv_choose, container, false);
rv = (RecyclerView) rootView.findViewById(R.id.rv_choose);
lm = new LinearLayoutManager(getActivity());
rv.setLayoutManager(lm);
rv.setHasFixedSize(true);
return rootView;
}
#Override
public void onPause() {
super.onPause();
position = lm.findFirstVisibleItemPosition();
}
#Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt("position", position);
}
#Override
public void onViewStateRestored(#Nullable Bundle savedInstanceState) {
super.onViewStateRestored(savedInstanceState);
if(savedInstanceState != null) {
position = savedInstanceState.getInt("position");
}
}
#Override
public void onResume() {
super.onResume();
if (position != 0) {
lm.scrollToPosition(position);
showToast(position+"");
}
}
#Override
public void onStart() {
super.onStart();
FirebaseRecyclerAdapter<NewsList, NewsListViewHolder> adapter =
new FirebaseRecyclerAdapter<NewsList, NewsListViewHolder>(
NewsList.class,
R.layout.frag_newslist_card_view,
NewsListViewHolder.class,
mQuery
) {
#Override
protected void populateViewHolder(NewsListViewHolder viewHolder, final NewsList model, int position) {
final String post_key = getRef(position).getKey();
viewHolder.setDate(model.getDate()+",");
viewHolder.setTime(model.getTime());
viewHolder.setTitle(model.getTitle());
viewHolder.setImage(getContext(), model.getImage());
viewHolder.setEye(model.getCode());
viewHolder.setThumb(post_key);
viewHolder.thumb.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
mProcessLikes = true;
mDatabaseLikes.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
if (mProcessLikes){
if (dataSnapshot.child(post_key).hasChild(mAuth.getCurrentUser().getUid())){
mDatabaseLikes.child(post_key).child(mAuth.getCurrentUser().getUid())
.removeValue();
mProcessLikes = false;
}
else {
mDatabaseLikes.child(post_key).child(mAuth.getCurrentUser().getUid())
.setValue("like");
mProcessLikes = false;
}
}
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
});
viewHolder.mView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
mDatabaseViews.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
if (!dataSnapshot.child(post_key).hasChild(mAuth.getCurrentUser().getUid())) {
mDatabaseViews.child(post_key).child(mAuth.getCurrentUser().getUid())
.setValue("view");
}
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
mChooserListener.chooseNews(model.getCode());
}
});
}
};
rv.setAdapter(adapter);
}
public static class NewsListViewHolder extends RecyclerView.ViewHolder {
//some text here
}
}
method showToast in the end shows real number of position but recyclerview starts from the beginning.
any ideas?
Make sure you are not reloading data from the server or wherever you are retrieving data.
Add is not null check in your fragment's onCreateView or activity's onCreate like:
if(savedInstanceState != null){
...
}else{
loadData();
}
Replace your linear layout manager with something similar to the following. I have used this implementation many times when using RecyclerView in fragments. Let me know how it goes
LinearLayoutManager mLayoutManager = new LinearLayoutManager(getActivity());
mLayoutManager.setReverseLayout(true);
mLayoutManager.setStackFromEnd(true);
yourItem.setLayoutManager(mLayoutManager);
I designed my service as it will make an alarm when user will go to a certain location.
But it crashes when it go to the certain making the alarm.
public class CheckDestinationService extends Service {
Calendar calender;
double late,longe;
int dis;
String loc;
private LocationManager mLocationManager = null;
private static final int LOCATION_INTERVAL = 0;
private static final float LOCATION_DISTANCE = 0;
private class LocationListener implements android.location.LocationListener {
Location mLastLocation;
public LocationListener(String provider) {
mLastLocation = new Location(provider);
}
public void onLocationChanged(Location location) {
mLastLocation.set(location);
final double currlat;
final double currlong;
float[] DistanceArray = new float[1];
currlat = location.getLatitude();
currlong = location.getLongitude();
android.location.Location.distanceBetween(currlat,currlong,late,longe,DistanceArray);
float Distance = DistanceArray[0];
//Toast.makeText(getApplicationContext(), "asdf "+String.valueOf(Distance), Toast.LENGTH_SHORT).show();
Log.d("asdfasdas", String.valueOf(currlat)+","+String.valueOf(currlong)+" "+String.valueOf(Distance));
if (Distance<=dis && Distance!=0 && dis!=0)
{
dis = 0;
Intent intent = new Intent(getBaseContext(), AlarmReceiver.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
Toast.makeText(getApplicationContext(), "Reached "+String.valueOf(Distance), Toast.LENGTH_SHORT).show();
PendingIntent pendingIntent = PendingIntent.getActivity(getApplicationContext(),0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
AlarmManager am = (AlarmManager)getSystemService(Activity.ALARM_SERVICE);
am.set(AlarmManager.RTC_WAKEUP, calender.getTimeInMillis(),pendingIntent);
//stopSelf();
}
/*final Handler handler = new Handler();
Runnable r = new Runnable() {
public void run() {
// TODO Auto-generated method stub
Intent intent = null;
intent.putExtra("lat", currlat);
intent.putExtra("long", currlong);
intent.putExtra("dis", dis);
intent.putExtra("loc", loc);
Toast.makeText(getApplicationContext(), "Sending", Toast.LENGTH_SHORT).show();
sendBroadcast(intent);
handler.postDelayed(this, 1000);
}
};
handler.postDelayed(r, 1000);*/
}
public void onProviderDisabled(String provider) {
}
public void onProviderEnabled(String provider) {
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}
}
LocationListener[] mLocationListeners = new LocationListener[] {
new LocationListener(LocationManager.GPS_PROVIDER),
new LocationListener(LocationManager.NETWORK_PROVIDER)
};
#Override
public IBinder onBind(Intent arg0) {
return null;
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
super.onStartCommand(intent, flags, startId);
late = intent.getDoubleExtra("lat", 0);
longe = intent.getDoubleExtra("long", 0);
dis = intent.getIntExtra("dis", 0);
loc = intent.getStringExtra("loc");
Toast.makeText(getApplicationContext(), "Destination Set to: "+loc+
" and Minimum Distance: "+
String.valueOf(dis) , Toast.LENGTH_SHORT).show();
return START_STICKY;
}
#Override
public void onCreate() {
initializeLocationManager();
try {
mLocationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, LOCATION_INTERVAL, LOCATION_DISTANCE,
mLocationListeners[1]);
} catch (java.lang.SecurityException ex) {
} catch (IllegalArgumentException ex) {
}
try {
mLocationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, LOCATION_INTERVAL, LOCATION_DISTANCE,
mLocationListeners[0]);
} catch (java.lang.SecurityException ex) {
} catch (IllegalArgumentException ex) {
}
}
#Override
public void onDestroy() {
super.onDestroy();
Toast.makeText(getApplicationContext(), "Service Destroyed", Toast.LENGTH_SHORT).show();
if (mLocationManager != null) {
for (int i = 0; i < mLocationListeners.length; i++) {
try {
mLocationManager.removeUpdates(mLocationListeners[i]);
} catch (Exception ex) {
}
}
}
}
private void initializeLocationManager() {
if (mLocationManager == null) {
mLocationManager = (LocationManager) getApplicationContext().getSystemService(Context.LOCATION_SERVICE);
}
}
}
and my AlarmReceiver class is
public class AlarmReceiver extends Activity {
private MediaPlayer mMediaPlayer;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.alarmreceiver);
Button stopAlarm = (Button) findViewById(R.id.stopAlarm);
stopAlarm.setOnTouchListener(new OnTouchListener() {
public boolean onTouch(View arg0, MotionEvent arg1) {
stopService(new Intent(AlarmReceiver.this, CheckDestinationService.class));
mMediaPlayer.stop();
finish();
return false;
}
});
playSound(this, getAlarmUri());
}
private void playSound(Context context, Uri alert) {
mMediaPlayer = new MediaPlayer();
try {
mMediaPlayer.setDataSource(context, alert);
final AudioManager audioManager = (AudioManager) context
.getSystemService(Context.AUDIO_SERVICE);
if (audioManager.getStreamVolume(AudioManager.STREAM_ALARM) != 0) {
mMediaPlayer.setAudioStreamType(AudioManager.STREAM_ALARM);
mMediaPlayer.prepare();
mMediaPlayer.start();
}
} catch (IOException e) {
System.out.println("OOPS");
}
}
//Get an alarm sound. Try for an alarm. If none set, try notification,
//Otherwise, ringtone.
private Uri getAlarmUri() {
Uri alert = RingtoneManager
.getDefaultUri(RingtoneManager.TYPE_ALARM);
if (alert == null) {
alert = RingtoneManager
.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
if (alert == null) {
alert = RingtoneManager
.getDefaultUri(RingtoneManager.TYPE_RINGTONE);
}
}
return alert;
}
#Override
public void onBackPressed() {
//MainActivity.iMinDistance = 0;
stopService(new Intent(AlarmReceiver.this, CheckDestinationService.class));
mMediaPlayer.stop();
finish();
}
}
I tested AlarmReceiver class from other activites and it worked properly
but it not working from the service.
please help!!
initalize Calendar
calender = Calendar.getInstance()
I found a tutorial and it looks like this:
package com.djrobotfreak.SVTest;
public class Tutorial2D extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(new Panel(this));
}
class Panel extends SurfaceView implements SurfaceHolder.Callback {
private TutorialThread _thread;
public Panel(Context context) {
super(context);
getHolder().addCallback(this);
_thread = new TutorialThread(getHolder(), this);
}
#Override
public void onDraw(Canvas canvas) {
Bitmap _scratch = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
canvas.drawColor(Color.BLACK);
canvas.drawBitmap(_scratch, 10, 10, null);
}
#Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
// TODO Auto-generated method stub
}
#Override
public void surfaceCreated(SurfaceHolder holder) {
_thread.setRunning(true);
_thread.start();
}
#Override
public void surfaceDestroyed(SurfaceHolder holder) {
// simply copied from sample application LunarLander:
// we have to tell thread to shut down & wait for it to finish, or else
// it might touch the Surface after we return and explode
boolean retry = true;
_thread.setRunning(false);
while (retry) {
try {
_thread.join();
retry = false;
} catch (InterruptedException e) {
// we will try it again and again...
}
}
}
}
class TutorialThread extends Thread {
private SurfaceHolder _surfaceHolder;
private Panel _panel;
private boolean _run = false;
public TutorialThread(SurfaceHolder surfaceHolder, Panel panel) {
_surfaceHolder = surfaceHolder;
_panel = panel;
}
public void setRunning(boolean run) {
_run = run;
}
#Override
public void run() {
Canvas c;
while (_run) {
c = null;
try {
c = _surfaceHolder.lockCanvas(null);
synchronized (_surfaceHolder) {
_panel.onDraw(c);
}
} finally {
// do this in a finally so that if an exception is thrown
// during the above, we don't leave the Surface in an
// inconsistent state
if (c != null) {
_surfaceHolder.unlockCanvasAndPost(c);
}
}
}
}
}
}
and it does not work, no matter what I do. I am trying to convert my code to surfaceview but I cant find any surfaceview programs that even work (besides the android-provided ones). Does anyone know what the error even is saying?
Here is my logcat info: http://shrib.com/oJB5Bxqs
If you get a ClassNotFoundException, you should check the Manifest file.
Click on the Application tab and look on the botton right side under "Attributes for".
If there is a red X mark under your Class Name, then click on the "Name" link and locate the correct class to load.