Develop Reference

How to get entries to match xAxis values MP line chart, Android

I am struggling to get a line chart correctly. I have data in Firestore database and from there I am trying to display temperature readings in a line chart. I am using the latest version of Mp line chart. I am trying to get the temperature values in Celsius to YAxis and the time in HH:mm format to the xAxis. I have tried this in mane ways and googled different ways to do this and I just can't get it right. Either the values don't show at all or the values show but in the wrong spot of the xAxis. also I can't get the yAxis showing correctly. Someone has asked about that here already and the answer was to put the ofset "60, 0 50, 60" but that don't work for me.
For the main issue I am currently trying to use the HourAxisValueFormatter which was instructed in GitHub. There is documentation of it but I can't understand how to get it working. I am new to Android an To Mp library so that is why it is difficult.
Below my activity code and the HourAxisValueFormatter
public class TempHistoryActivity extends AppCompatActivity {
private LineChart mChart;
private FirebaseFirestore db = FirebaseFirestore.getInstance();
private ArrayList<Integer> tempItemList;
private ArrayList<Long> timeList, convertedTimes;
private ArrayList<Date> dateList;
private Long reference;
private CollectionReference collectionReference = db.collection("whtitem");
private Toolbar toolbar;
private FirebaseAuth firebaseAuth;
private FirebaseAuth.AuthStateListener authStateListener;
private FirebaseUser user;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_temp_history);
toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
firebaseAuth = FirebaseAuth.getInstance();
user = firebaseAuth.getCurrentUser();
tempItemList = new ArrayList<>();
timeList = new ArrayList<>();
dateList = new ArrayList<>();
convertedTimes = new ArrayList<>();
mChart = findViewById(R.id.tempLineChart);
mChart.setTouchEnabled(true);
mChart.setPinchZoom(true);
Marker mv = new Marker(getApplicationContext(), R.layout.custom_marker_view);
mv.setChartView(mChart);
mChart.setMarker(mv);
mChart.setViewPortOffsets(60, 0, 50, 90);
mChart.setExtraLeftOffset(40);
retrieveDayDataFromDatabase();
}
private void retrieveDayDataFromDatabase() {
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MILLISECOND, 0);
Date currentDate = calendar.getTime();
Calendar cals = Calendar.getInstance();
cals.add(Calendar.DAY_OF_YEAR, +1);
Date tomorrow = cals.getTime();
collectionReference.whereEqualTo("userId", WhtApi.getInstance()
.getUserId())
.orderBy("date", Query.Direction.ASCENDING)
.startAt(currentDate)
.endAt(tomorrow)
.get()
.addOnSuccessListener(queryDocumentSnapshots -> {
if (!queryDocumentSnapshots.isEmpty()){
dateList.clear();
tempItemList.clear();
for (QueryDocumentSnapshot whtitems : queryDocumentSnapshots) {
WhtItem whtItem = whtitems.toObject(WhtItem.class);
dateList.add(whtItem.getDate());
tempItemList.add(whtItem.getTemperature());
Log.d("temps", "retrieveDayDataFromDatabase: " + tempItemList);
}
Calendar cal = Calendar.getInstance();
for (int i = 0; i < dateList.size(); i++){
Date date = dateList.get(i);
Long time = Long.valueOf(date.getTime());
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm");
//String time = DateFormat.format("HH:mm", dateList.get(i)).toString();
/* cal.setTime(dateList.get(i));
int hour = cal.get(Calendar.HOUR_OF_DAY);
int minute = cal.get(Calendar.MINUTE);
String t = hour +":"+minute+0;
Log.d("st", "retrieveDayDataFromDatabase: " + t);
DecimalFormatSymbols symbol = new DecimalFormatSymbols();
symbol.setDecimalSeparator(':');
DecimalFormat decimalFormat = new DecimalFormat("0.##");
NumberFormat format = NumberFormat.getInstance(Locale.US);
format.setMaximumFractionDigits(3);
format.setMinimumFractionDigits(3);
float time = 0;
try {
time = decimalFormat.parse(t).floatValue();
Log.d("timef", "retrieveDayDataFromDatabase: " + time);
} catch (ParseException e) {
e.printStackTrace();
}
Float newValue = new Float(format.format(time));
BigDecimal decimal = new BigDecimal(t).setScale(2);
Log.d("decimal", "retrieveDayDataFromDatabase: " + decimal);*/
timeList.add(time);
}
renderDayData();
}else {
Toast.makeText(TempHistoryActivity.this, "Ei lämpötilakirjauksia vielä", Toast.LENGTH_SHORT).show();
}
})
.addOnFailureListener(e -> Toast.makeText(TempHistoryActivity.this, "Tapahtui virhe dataa haettaessa", Toast.LENGTH_SHORT).show());
}
public void renderDayData() {
Collections.sort(timeList);
for (int i = 0; i<timeList.size(); i++){
reference = timeList.get(0);
Long Xnew = (timeList.get(1)) - reference;
convertedTimes.add(Xnew);
Log.d("converted", "renderDayData: "+ convertedTimes);
}
LimitLine llXAxis = new LimitLine(10f, "Index 10");
llXAxis.setLineWidth(4f);
llXAxis.enableDashedLine(10f, 10f, 0f);
llXAxis.setLabelPosition(LimitLine.LimitLabelPosition.RIGHT_BOTTOM);
llXAxis.setTextSize(10f);
XAxis xAxis = mChart.getXAxis();
xAxis.setValueFormatter(new HourAxisValueFormatter(reference));
xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);
xAxis.enableGridDashedLine(10f, 10f, 0f);
xAxis.setAxisMinimum(0f);
xAxis.setAxisMaximum(10f);
xAxis.setTextColor(ContextCompat.getColor(this, R.color.colorPrimary));
xAxis.setGranularity(1f);
xAxis.setDrawLimitLinesBehindData(true);
LimitLine ll1 = new LimitLine(33f, "Lämpöraja 33°C");
ll1.setLineWidth(4f);
ll1.enableDashedLine(10f, 10f, 0f);
ll1.setLabelPosition(LimitLine.LimitLabelPosition.RIGHT_TOP);
ll1.setTextSize(15f);
ll1.setTextColor(ContextCompat.getColor(this, R.color.colorPrimary));
YAxis leftAxis = mChart.getAxisLeft();
leftAxis.setValueFormatter(new IndexAxisValueFormatter(getTemperature()));
leftAxis.enableGridDashedLine(10f, 10f, 0f);
leftAxis.removeAllLimitLines();
leftAxis.addLimitLine(ll1);
leftAxis.setDrawZeroLine(false);
leftAxis.setAxisMinimum(0f);
leftAxis.setAxisMaximum(100f);
leftAxis.setDrawLimitLinesBehindData(false);
leftAxis.setDrawGridLines(true);
leftAxis.setTextColor(ContextCompat.getColor(this, R.color.colorPrimary));
mChart.getAxisRight().setEnabled(false);
mChart.invalidate();
setDayData();
}
public ArrayList<String> getDate(){
ArrayList<String> label = new ArrayList<>();
for(int i=0; i<dateList.size(); i++){
String date = DateFormat.format("dd.MM.", dateList.get(i)).toString();
label.add(date);
}return label;
}
public ArrayList<String> getTime(){
ArrayList<String> times = new ArrayList<>();
for(int i=0; i<values.length; i++){
times.add( values[i]);
}return times;
}
public ArrayList<String> getTemperature(){
ArrayList<String> temps = new ArrayList<>();
for(int i=0; i < tempItemList.size(); i++){
String temp = tempItemList.get(i) + "°C";
temps.add(temp);
Log.d("templist", "getTemperature: " + temps);
}return temps;
}
private void setDayData() {
ArrayList<Entry> values = new ArrayList<>();
values.clear();
for (int i =0 ; i < timeList.size(); i++){
values.add(new Entry(i, tempItemList.get(i)));
Log.d("list", "setDayData: " + timeList.get(i));
Log.d("values", "setData: " + values);
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
Collections.sort(values, new EntryXComparator());
}
LineDataSet set1;
if (mChart.getData() != null &&
mChart.getData().getDataSetCount() > 0) {
set1 = (LineDataSet) mChart.getData().getDataSetByIndex(0);
set1.setValues(values);
mChart.getData().notifyDataChanged();
mChart.notifyDataSetChanged();
} else {
set1 = new LineDataSet(values, "Lämpötiladata");
set1.setDrawIcons(false);
set1.enableDashedLine(10f, 5f, 0f);
set1.enableDashedHighlightLine(10f, 5f, 0f);
set1.setColor(ContextCompat.getColor(this, R.color.colorPrimary));
set1.setCircleColor(ContextCompat.getColor(this, R.color.colorPrimary));
set1.setLineWidth(1f);
set1.setCircleRadius(3f);
set1.setDrawCircleHole(false);
set1.setValueTextSize(9f);
set1.setDrawFilled(true);
set1.setFormLineWidth(1f);
set1.setFormLineDashEffect(new DashPathEffect(new float[]{10f, 5f}, 0f));
set1.setFormSize(15.f);
if (Utils.getSDKInt() >= 18) {
Drawable drawable = ContextCompat.getDrawable(this, R.drawable.gradient);
set1.setFillDrawable(drawable);
} else {
set1.setFillColor(ContextCompat.getColor(this, R.color.colorPrimary));
}
ArrayList<ILineDataSet> dataSets = new ArrayList<>();
dataSets.add(set1);
LineData data = new LineData(dataSets);
mChart.setData(data);
Description description = new Description();
description.setText("");
mChart.setDescription(description);
mChart.invalidate();
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.profile:
if (user != null && firebaseAuth != null) {
startActivity(new Intent(TempHistoryActivity.this, ProfileActivity.class));
//finish();
}
break;
case R.id.mainpage:
if (user != null && firebaseAuth != null) {
startActivity(new Intent(TempHistoryActivity.this, MainPageActivity.class));
//finish();
}
break;
case R.id.temp_history:
if (user != null && firebaseAuth != null) {
startActivity(new Intent(TempHistoryActivity.this, TempHistoryActivity.class));
//finish();
}
break;
case R.id.pulse_history:
if (user != null && firebaseAuth!=null) {
startActivity(new Intent(TempHistoryActivity.this, PulseHistoryActivity.class));
//finish();
}
break;
case R.id.time_in_temp_history:
if (user != null && firebaseAuth != null) {
startActivity(new Intent(TempHistoryActivity.this, TimeTempActivity.class));
//finish();
}
break;
case R.id.action_signout:
//signout
if (user != null && firebaseAuth != null) {
firebaseAuth.signOut();
startActivity(new Intent(TempHistoryActivity.this, MainActivity.class));
//finish();
}
break;
}
return super.onOptionsItemSelected(item);
}
}
public class HourAxisValueFormatter extends ValueFormatter
{
private long referenceTimestamp; // minimum timestamp in your data set
private DateFormat mDataFormat;
private Date mDate;
public HourAxisValueFormatter(long referenceTimestamp) {
this.referenceTimestamp = referenceTimestamp;
this.mDataFormat = new SimpleDateFormat("HH:mm", Locale.ENGLISH);
this.mDate = new Date();
}
#Override
public String getFormattedValue(float value){
// convertedTimestamp = originalTimestamp - referenceTimestamp
long convertedTimestamp = (int) value;
// Retrieve original timestamp
long originalTimestamp = referenceTimestamp + convertedTimestamp;
// Convert timestamp to hour:minute
return getHour(originalTimestamp);
}
public int getDecimalDigits()
{
return 0;
}
private String getHour(long timestamp){
try{
mDate.setTime(timestamp*1000);
return mDataFormat.format(mDate);
}
catch(Exception ex){
return "xx";
}
}
}
Here is my output atm
output
and this is what I am trying to get
enter image description here
I want the xAxis values to be "07:00, 08:00, 09:00, 10:00, 11:00, 12:00, 13:00, 14:00, 15:00, 16:00, 17:00"

android Animating markers every x sec

I am moving markers every 1 Seconds on map and this works (I am getting CarList every 1 sec from API call)
//Inside CarList there is carname which serves as id
void updateCarsLocation(final List<GeoPosition> CarList) {
//Remove old markers
if (carMarkers != null){
for (Marker marker : carMarkers) {
marker.remove();
}
}
carMarkers.clear();
if (CarList != null) {
for (GeoPosition car : CarList) {
//Rotate Car
Bitmap myImg = BitmapFactory.decodeResource(getResources(), R.drawable.car);
Matrix matrix = new Matrix();
matrix.postRotate(car.bearing);
Bitmap rotated = Bitmap.createBitmap(myImg, 0, 0, myImg.getWidth(), myImg.getHeight(),
matrix, true);
//From Bitmap
MarkerOptions markerOptions = new MarkerOptions();
LatLng latLng = new LatLng(car.lat, car.lng);
markerOptions.position(latLng);
markerOptions.icon(BitmapDescriptorFactory.fromBitmap(rotated));
Marker cMarker = mMap.addMarker(markerOptions);
carMarkers.add(cMarker);
}
}
}
But i would like this movements to be animated (smooth) i have searched SO for some help and found couple links
Animate markers 1
Animate markers 2
But i just can't figure out how to do this, I taught about putting Markers + Cars in Hashmap<Marker, GeoPosition> and check new GeoPosition with Old by carname (id) then use animate, but i haven't still managed to get that working.

I have implemented this from a long time i will post my solution but make sure you read and understand what i am doing
private Emitter.Listener onNewDriversOnMap = new Emitter.Listener() {
#Override
public void call(final Object... args) {
final JSONObject receivedDrivers = (JSONObject) args[0];
getActivity().runOnUiThread(new Runnable() {
#Override
public void run() {
if (!BusyParsingDrivers) {
BusyParsingDrivers = true;
new Parse_NearbyDrivers_Task(receivedDrivers).executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
Log.e("receivedDrivers", receivedDrivers.toString());
}
}
});
}
};
private ArrayList<Marker> existingMapMarkers = new ArrayList<>();
private boolean noNearby = false;
private boolean BusyParsingDrivers = false;
private List<Driver> driverList = new ArrayList<>();
private GoogleMap map;
/**
* Parse the new drivers list
**/
public class Parse_NearbyDrivers_Task extends AsyncTask<Void, Void, Integer>
{
JSONObject receivedDrivers;
List<Driver> newDrivers = new ArrayList<>();
List<Driver> oldDriversMoved = new ArrayList<>();
List<Driver> removedDrivers = new ArrayList<>();
public Parse_NearbyDrivers_Task(JSONObject receivedDrivers)
{
this.receivedDrivers = receivedDrivers;
}
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected Integer doInBackground(Void... params)
{
try
{
//Get the status object from the received JSONObject
JSONObject status = receivedDrivers.getJSONObject("Status");
//Get the status code
int status_code = Integer.parseInt(status.getString("Status"));
//Here we define a switch to handle the values of the status code and return an integer after some work to filter the drivers
switch (status_code) {
case 0: //The list is not empty
{
JSONArray nearbyDrivers = receivedDrivers.getJSONArray("NearbyDrivers");
if (driverList.isEmpty()) //If the driversList is empty
{
//Iterate over all the new drivers and add them to the driverList and return 0
for (int i = 0; i < nearbyDrivers.length(); ++i) {
Driver tempDriver = new Driver();
tempDriver.id = Integer.parseInt(nearbyDrivers.getJSONObject(i).getString("pkDriverId"));
tempDriver.longitude = Double.parseDouble(nearbyDrivers.getJSONObject(i).getString("Longitude"));
tempDriver.latitude = Double.parseDouble(nearbyDrivers.getJSONObject(i).getString("Latitude"));
tempDriver.altitude = Double.parseDouble(nearbyDrivers.getJSONObject(i).getString("Altitude"));
tempDriver.angle = Float.parseFloat(nearbyDrivers.getJSONObject(i).getString("Angle"));
tempDriver.speed = Float.parseFloat(nearbyDrivers.getJSONObject(i).getString("Speed"));
tempDriver.accuracy = Float.parseFloat(nearbyDrivers.getJSONObject(i).getString("Accuracy"));
tempDriver.distanceCovered = Double.parseDouble(nearbyDrivers.getJSONObject(i).getString("DistanceCovered"));
tempDriver.carType = Integer.parseInt(nearbyDrivers.getJSONObject(i).getString("CarTypeCode"));
driverList.add(tempDriver);
}
return 0;
} else //If the driversList is not empty
{
//Iterate over the received list and if the list contain a new driver then add it to the newDrivers
// but if it contain an already added driver but with different coordinates then add this driver to
// the oldDriversMoved to later move this driver to the new coordinates
for (int i = 0; i < nearbyDrivers.length(); i++) {
Driver tempDriver = new Driver();
tempDriver.id = Integer.parseInt(nearbyDrivers.getJSONObject(i).getString("pkDriverId"));
tempDriver.longitude = Double.parseDouble(nearbyDrivers.getJSONObject(i).getString("Longitude"));
tempDriver.latitude = Double.parseDouble(nearbyDrivers.getJSONObject(i).getString("Latitude"));
tempDriver.altitude = Double.parseDouble(nearbyDrivers.getJSONObject(i).getString("Altitude"));
tempDriver.angle = Float.parseFloat(nearbyDrivers.getJSONObject(i).getString("Angle"));
tempDriver.speed = Float.parseFloat(nearbyDrivers.getJSONObject(i).getString("Speed"));
tempDriver.accuracy = Float.parseFloat(nearbyDrivers.getJSONObject(i).getString("Accuracy"));
tempDriver.distanceCovered = Double.parseDouble(nearbyDrivers.getJSONObject(i).getString("DistanceCovered"));
tempDriver.carType = Integer.parseInt(nearbyDrivers.getJSONObject(i).getString("CarTypeCode"));
if (!isDriverAlreadyExists(driverList, nearbyDrivers.getJSONObject(i).getInt("pkDriverId"))) {
newDrivers.add(tempDriver);
} else {
for (int j = 0; j < driverList.size(); ++j) {
if (nearbyDrivers.getJSONObject(i).getInt("pkDriverId") == driverList.get(j).id) {
if (Double.parseDouble(nearbyDrivers.getJSONObject(i).getString("Longitude")) != driverList.get(j).longitude || Double.parseDouble(nearbyDrivers.getJSONObject(i).getString("Latitude")) != driverList.get(j).latitude) {
oldDriversMoved.add(tempDriver);
}
}
}
}
}
//If a driver is no more existing then add it to the removedDrivers List
for (int j = 0; j < driverList.size(); j++) {
if (!isDriverAlreadyExists(nearbyDrivers, driverList.get(j).id)) {
removedDrivers.add(driverList.get(j));
}
}
//return 1 to be handled in the onPostExecute
return 1;
}
}
case 1: //The list is empty
case 500: //The list is empty
return 2;
default: //Some error
return -1;
}
} catch (JSONException e) {
return -2;
}
}
#Override
protected void onPostExecute(Integer status)
{
super.onPostExecute(status);
try {
//According to what is received from the doInBackground make some actions that will affect the markers of the drivers
switch (status) {
case 0:
noNearby = false;
Plant_NearbyDrivers();
//helper_methods.Debug("Arrays sizes","DriverList:"+driverList.size()+" Existing map markers: "+existingMapMarkers.size());
break;
case 1:
noNearby = false;
Add_Remove_Move_Drivers(removedDrivers, oldDriversMoved, newDrivers);
break;
case 2:
Remove_AllDriverFromMap();
break;
}
} catch (Exception e) {
e.printStackTrace();
}
BusyParsingDrivers = false;
}
}
/**
* This method is called after receiving the drivers list and filtering this list according to new,removed,moved drivers to handle these actions
**/
private void Add_Remove_Move_Drivers(List<Driver> removedDrivers, List<Driver> oldDriversMoved, List<Driver> newDrivers)
{
//Get the icon that will be used to add the new drivers
BitmapDescriptor icon = getCarIcon();
ArrayList<ObjectAnimator> objectAnimatorsArray = new ArrayList<>();
ObjectAnimator[] objectAnimators;
TypeEvaluator<LatLng> typeEvaluator = new TypeEvaluator<LatLng>() {
#Override
public LatLng evaluate(float fraction, LatLng startValue, LatLng endValue) {
return new LatLngInterpolator.Spherical().interpolate(fraction, startValue, endValue);
}
};
//Iterate the removedDrivers list to see the matching drivers in the driversList and remove it
for (int i = 0; i < removedDrivers.size(); ++i) {
for (int j = 0; j < driverList.size(); ++j) {
//When Ids match then remove from the existingMapMarkers list and driversList
if (removedDrivers.get(i).id == driverList.get(j).id) {
driverList.remove(j);
existingMapMarkers.get(j).remove();
existingMapMarkers.remove(j);
}
}
}
//Iterate the oldDriversMoved List to get the matching in the driversList and update it and move it according to the new coordinates
for (int i = 0; i < oldDriversMoved.size(); ++i) {
for (int j = 0; j < driverList.size(); ++j) {
//When we get the match update the driver in driversList and move it to the new LatLang
if (oldDriversMoved.get(i).id == driverList.get(j).id) {
LatLng newDriverLatLng = new LatLng(oldDriversMoved.get(i).latitude, oldDriversMoved.get(i).longitude);
float desiredRotation = oldDriversMoved.get(i).angle;
ObjectAnimator rotationAnimator = ObjectAnimator.ofFloat(existingMapMarkers.get(j), "rotation", existingMapMarkers.get(j).getRotation(), desiredRotation);
rotationAnimator.setDuration(1500);
objectAnimatorsArray.add(rotationAnimator);
Property<Marker, LatLng> property = Property.of(Marker.class, LatLng.class, "position");
ObjectAnimator directionAnimator = ObjectAnimator.ofObject(existingMapMarkers.get(j), property, typeEvaluator, newDriverLatLng);
directionAnimator.setDuration(3000);
objectAnimatorsArray.add(directionAnimator);
objectAnimators = objectAnimatorsArray.toArray(new ObjectAnimator[objectAnimatorsArray.size()]);
AnimatorSet animDrivers = new AnimatorSet();
animDrivers.playTogether(objectAnimators);
animDrivers.start();
int position = driverList.indexOf(driverList.get(j));
driverList.remove(position);
driverList.add(position, oldDriversMoved.get(i));
}
}
}
//Iterate the newDrivers List to add them as markers and to the driversList
for (int i = 0; i < newDrivers.size(); ++i) {
LatLng newDriverLatLng = new LatLng(newDrivers.get(i).latitude, newDrivers.get(i).longitude);
driverList.add(newDrivers.get(i));
existingMapMarkers.add(map.addMarker(new MarkerOptions().anchor(0.5f, 0.5f).position(newDriverLatLng).icon(icon)));
}
}
/**
* Remove all the drivers from the map
**/
public void Remove_AllDriverFromMap()
{
//Iterate all the drivers markers and remove them
for (int i = 0; i < existingMapMarkers.size(); ++i) {
existingMapMarkers.get(i).remove();
}
//Clear the arrays and set noNearby to true
noNearby = true;
driverList.clear();
existingMapMarkers.clear();
}
/**
* This method is called when there is no drivers visible on the map and we receive a list of drivers so we plant them right away
**/
private void Plant_NearbyDrivers()
{
try {
BitmapDescriptor icon = getCarIcon();
for (int i = 0; i < driverList.size(); i++) {
LatLng newDriverLatLng = new LatLng(driverList.get(i).latitude, driverList.get(i).longitude);
existingMapMarkers.add(map.addMarker(new MarkerOptions().anchor(0.5f, 0.5f).position(newDriverLatLng).icon(icon)));
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Called to compare if the new drivers received is contained in the old driver list
**/
public boolean isDriverAlreadyExists(List<Driver> array, int driverId)
{
for (int c = 0; c < array.size(); c++) {
Driver current = array.get(c);
if (current.id == driverId)
return true;
}
return false;
}
/**
* Called to compare if the old drivers list is contained in the new drivers list
**/
public boolean isDriverAlreadyExists(JSONArray nearbyDrivers, int driverId)
{
for (int c = 0; c < nearbyDrivers.length(); c++) {
try {
JSONObject current = nearbyDrivers.getJSONObject(c);
if (current.getInt("pkDriverId") == driverId)
return true;
} catch (JSONException e) {
e.printStackTrace();
}
}
return false;
}
/**
* Get the icon of the car to be displayed according to the selected filter
**/
public BitmapDescriptor getCarIcon()
{
BitmapDescriptor icon = null;
//make the icon as you want
return icon;
}
add this to your build
compile 'com.nineoldandroids:library:2.4.0'

Using AlertDialog.Builder to build custom AlertDialog class

I have a Class FoodDialog that extends AlertDialog that I have customized to how I would like it to look.
I am now wanting to edit the positive/negative buttons using an AlertDialog.Builder, however, when I attempt to build an instance of FoodDialog using a builder, I am facing an 'Incompatible types' error where the builder is asking for AlertDialog instead I am providing it with an extension of AlertDialog - is there a way around this?
If not, is there a way I can edit the positive/negative buttons of my custom AlertDialog class FoodDialog?
Below is my FoodDialog class. The yes/no buttons I have there are ones I have created myself, but I would like the ones that are part of the AlertDialog.Builder to appear instead as these buttons get pushed out of sight when the soft keyboard appears:
public class FoodDialog extends AlertDialog implements OnClickListener {
private TextView foodNameTextView, foodDescTextView, foodPortionTextView, catTextView, qtyText, cal, fat, sFat, carb, sug, prot, salt, imageTxt,
measureText;
private EditText foodQty;
private ImageView foodImage;
private ImageButton yesBtn, noBtn;
private int foodID, totalCal;
private Bitmap image;
private String user, portionType, foodName, foodDesc, cat, totalCalString, totalFatString,
totalSFatString, totalCarbString, totalSugString, totalProtString, totalSaltString, portionBaseString;
private double totalFat, totalSFat, totalCarb, totalSug, totalProt, totalSalt, portionBase;
private Food food;
private Portion portion;
private Nutrients nutrients;
private PortionType pType;
private DBHandler db;
public FoodDialog(Context context){
super(context);
}
public FoodDialog(Context context, int foodID, String imgLocation, final String user) {
super(context, android.R.style.Theme_Holo_Light_Dialog);
this.setTitle("Confirm?");
setContentView(R.layout.dialog_layout);
this.foodID = foodID;
this.user = user;
db = new DBHandler(context);
food = db.getFoodByID(foodID, user);
portion = db.getPortionByFoodID(foodID);
nutrients = db.getNutrientsByFoodIDAndPortionType(foodID, portion.getPortionType());
pType = db.getPortionTypeByName(portion.getPortionType());
//getting object attributes
portionType = portion.getPortionType();
portionBase = portion.getPortionBase();
//food
foodName = food.getName();
foodDesc = food.getDesc();
cat = food.getCat();
//nutrients
totalCal = nutrients.getCal();
totalFat = nutrients.getFat();
totalSFat = nutrients.getSFat();
totalCarb = nutrients.getCarb();
totalSug = nutrients.getSug();
totalProt = nutrients.getProt();
totalSalt = nutrients.getSalt();
//converting to string
totalCalString = String.valueOf(totalCal);
if (totalFat % 1 == 0) {
totalFatString = String.format("%.0f", totalFat);
} else {
totalFatString = String.valueOf(totalFat);
}
if (totalSFat % 1 == 0) {
totalSFatString = String.format("%.0f", totalSFat);
} else {
totalSFatString = String.valueOf(totalSFat);
}
if (totalCarb % 1 == 0) {
totalCarbString = String.format("%.0f", totalCarb);
} else {
totalCarbString = String.valueOf(totalCarb);
}
if (totalSug % 1 == 0) {
totalSugString = String.format("%.0f", totalSug);
} else {
totalSugString = String.valueOf(totalSug);
}
if (totalProt % 1 == 0) {
totalProtString = String.format("%.0f", totalProt);
} else {
totalProtString = String.valueOf(totalProt);
}
if (totalSalt % 1 == 0) {
totalSaltString = String.format("%.0f", totalSalt);
} else {
totalSaltString = String.valueOf(totalSalt);
}
if (portionBase % 1 == 0) {
portionBaseString = String.format("%.0f", portionBase);
} else {
portionBaseString = String.valueOf(portionBase);
}
//textviews
foodNameTextView = (TextView) findViewById(R.id.dialogName);
foodNameTextView.setText(foodName);
foodDescTextView = (TextView) findViewById(R.id.dialogDesc);
foodDescTextView.setText(foodDesc);
foodPortionTextView = (TextView) findViewById(R.id.dialogPortion);
foodPortionTextView.setText("Values based per " + portionBase + " " + portionType);
catTextView = (TextView) findViewById(R.id.dialogCat);
catTextView.setText(cat);
measureText = (TextView) findViewById(R.id.dialogMeasure);
measureText.setText(portionType);
qtyText = (TextView) findViewById(R.id.dialogQtyText);
imageTxt = (TextView) findViewById(R.id.dialogImageText);
cal = (TextView) findViewById(R.id.dialogCal);
cal.setText(totalCalString);
fat = (TextView) findViewById(R.id.dialogFat);
fat.setText(totalFatString + "g");
sFat = (TextView) findViewById(R.id.dialogSFat);
sFat.setText(totalSFatString + "g");
carb = (TextView) findViewById(R.id.dialogCarb);
carb.setText(totalCarbString + "g");
sug = (TextView) findViewById(R.id.dialogSug);
sug.setText(totalSugString + "g");
prot = (TextView) findViewById(R.id.dialogProt);
prot.setText(totalProtString + "g");
salt = (TextView) findViewById(R.id.dialogSalt);
salt.setText(totalSaltString + "g");
//img
foodImage = (ImageView) findViewById(R.id.dialogImage);
imgLocation = food.getImgURL();
image = BitmapFactory.decodeFile(imgLocation);
foodImage.setImageBitmap(image);
if (imgLocation.equals("nourl")) {
imageTxt.setText("No Image");
}
//edit tex
foodQty = (EditText) findViewById(R.id.dialogQty);
//adjusting edittext
foodQty.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_DECIMAL);
foodQty.setFilters(new InputFilter[]{
new DigitsKeyListener(Boolean.FALSE, Boolean.TRUE) {
int beforeDecimal = 4, afterDecimal = 3;
#Override
public CharSequence filter(CharSequence source, int start, int end,
Spanned dest, int dstart, int dend) {
String temp = foodQty.getText() + source.toString();
if (temp.equals(".")) {
return "0.";
} else if (temp.toString().indexOf(".") == -1) {
// no decimal point placed yet
if (temp.length() > beforeDecimal) {
return "";
}
} else {
temp = temp.substring(temp.indexOf(".") + 1);
if (temp.length() > afterDecimal) {
return "";
}
}
return super.filter(source, start, end, dest, dstart, dend);
}
}
});
foodQty.setText(portionBaseString);
//btns
yesBtn = (ImageButton) findViewById(R.id.yesBtn);
noBtn = (ImageButton) findViewById(R.id.noBtn);
Bitmap tick = BitmapFactory.decodeResource(context.getResources(),
R.drawable.png_tick);
Bitmap cross = BitmapFactory.decodeResource(context.getResources(),
R.drawable.png_cross);
yesBtn.setImageBitmap(tick);
noBtn.setImageBitmap(cross);
yesBtn.setOnClickListener(this);
noBtn.setOnClickListener(this);
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
}
#Override
public void onClick(View v) {
if (v == yesBtn) {
SimpleDateFormat currentDate = new SimpleDateFormat("yyyy-MM-dd");
SimpleDateFormat currentTime = new SimpleDateFormat("HH:mm:ss");
String date = currentDate.format(new Date());
String time = currentTime.format(new Date());
double qty = 0;
//get quantity amount
// if (portionMeasure.equals("singles")) {
//qty = foodQty.getValue();
// } else {
if (foodQty.getText().length() != 0) {
qty = Double.valueOf(foodQty.getText().toString());
} else {
qty = 0;
}
// }
if (qty == 0 || String.valueOf(qty) == "") {
Toast.makeText(getContext(), "Please enter an amount", Toast.LENGTH_SHORT).show();
} else {
//create new intake
Intake intake = new Intake(0, foodID, portionType, qty, date, time);
//record it and increment food used value
db.recordIntake(intake, user);
db.incrementUsedCount(intake.getFoodID(), 1);
db.close();
cancel();
Toast.makeText(getContext(), foodName + " recorded", Toast.LENGTH_SHORT).show();
AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
builder.setTitle("What next?");
builder.setItems(new CharSequence[]
{"Record another food intake..", "Main Menu..", "View Stats.."},
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// The 'which' argument contains the index position
// of the selected item
switch (which) {
case 0:
cancel();
break;
case 1:
Intent main = new Intent(getContext(), ProfileActivity.class);
getContext().startActivity(main);
break;
case 2:
Intent stats = new Intent(getContext(), StatsActivity.class);
getContext().startActivity(stats);
break;
}
}
});
AlertDialog choose = builder.create();
choose.show();
}
} else if (v == noBtn) {
cancel();
}
}
}

You can catch your buttons click listener as follows:
yesBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//yes button click code here
}
});
noBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//no button click code here
}
});
You can use the logcat to see if your listener are being fired.

AndroidPieChart will not show

This is my XML :
<net.kenyang.piechart.PieChart
android:id="#+id/pieChart"
android:layout_below="#id/id_bar"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
This is the code that I use for the piechart to be initialised:
ArrayList<PieChartData> alPercentage = new ArrayList<PieChartData>();
alPercentage.add(new PieChartData(55.0f, "1"));
alPercentage.add(new PieChartData(45.0f, "2"));
try {
// setting data
pieChart.setAdapter(alPercentage);
// setting a listener
pieChart.setOnSelectedListener(new PieChart.OnSelectedLisenter() {
#Override
public void onSelected(int iSelectedIndex) {
Toast.makeText(PSTravelStatisticsActivity.this, "Select index:" + iSelectedIndex, Toast.LENGTH_SHORT).show();
}
});
pieChart.setVisibility(View.VISIBLE);
pieChart.invalidate();
} catch (Exception e) {
Log.i("","error is : " + e.getMessage());
if (e.getMessage().equals(PieChart.ERROR_NOT_EQUAL_TO_100)){
Log.e("kenyang", "percentage is not equal to 100");
}
}
Now it doesn't give me an error
If I try making it in such a way that the percentage is less than 100, but then it throws an exception. So that means that with this logic, it should work, it does send me 2 logs, but thats it:
10-08 16:10:11.556 12591-12591/nl.hgrams.passenger I/net.kenyang.piechart.PieChart﹕ PieChart init
10-08 16:10:11.626 12591-12591/nl.hgrams.passenger I/net.kenyang.piechart.PieChart﹕ onDraw

Did it like this and it worked then:
final PieRenderer pieRenderer = pieChart.getRenderer(PieRenderer.class);
pieRenderer.setDonutSize((float) 75 / 100, PieRenderer.DonutMode.PERCENT);
selectDataType();
pieChart.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
if(pieRenderer.getContainingSegment(new PointF(event.getX(), event.getY())) == bikeS){
segment = 0;
selectSegment(segment, true);
}
if(pieRenderer.getContainingSegment(new PointF(event.getX(), event.getY())) == carS){
segment = 1;
selectSegment(segment, true);
}
if(pieRenderer.getContainingSegment(new PointF(event.getX(), event.getY())) == transitS){
segment = 2;
selectSegment(segment, true);
}
if(pieRenderer.getContainingSegment(new PointF(event.getX(), event.getY())) == walkS){
segment = 3;
selectSegment(segment, true);
}
return false;
}
});
pieChart.removeSegment(carS);
pieChart.removeSegment(walkS);
pieChart.removeSegment(transitS);
pieChart.removeSegment(bikeS);
bikeS = new Segment("", tm.getBicycling());
carS = new Segment("", tm.getDriving());
transitS = new Segment("", tm.getTransit());
walkS = new Segment("", tm.getWalking());
pieChart.addSeries(bikeS, new SegmentFormatter(bikeCP, bikeCP, bikeCP, bikeCP));
pieChart.addSeries(carS, new SegmentFormatter(carC, carC, carC, carC));
pieChart.addSeries(transitS, new SegmentFormatter(transitC, transitC, transitC, transitC));
pieChart.addSeries(walkS, new SegmentFormatter(walkC, walkC, walkC, walkC));
typeText.setText(getString(R.string.bike));
typePercent.setTextColor(getResources().getColor(R.color.bike_color));
typeImage.setImageResource(R.drawable.profile_travel_mode_pie_bicycling);
pieChart.invalidate();

Battery graph in android using GraphView library?

i found i great library to draw graphs. I want to create one that displays in the x axis the time and in y the battery percentage. My goal is create a graph like this:
You can see the percentage on the left and the date/time on bottom. Starting from this example code : https://github.com/jjoe64/GraphView-Demos/blob/master/src/com/jjoe64/graphviewdemos/CustomLabelFormatterActivity.java i want insert the correct data but i never used graphs. This is the activity
public class CustomLabelFormatterActivity extends Activity {
/** Called when the activity is first created. */
#SuppressLint("SimpleDateFormat")
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.graphs);
// init example series data
Random rand = new Random();
int size = 20;
GraphViewData[] data = new GraphViewData[size];
for (int i=0; i<size; i++) {
data[i] = new GraphViewData(i, rand.nextInt(20));
}
GraphViewSeries exampleSeries = new GraphViewSeries(data);
GraphView graphView;
if (getIntent().getStringExtra("type").equals("bar")) {
graphView = new BarGraphView(
this // context
, "GraphViewDemo" // heading
);
} else {
graphView = new LineGraphView(
this // context
, "GraphViewDemo" // heading
);
}
graphView.addSeries(exampleSeries); // data
graphView.setCustomLabelFormatter(new CustomLabelFormatter() {
#Override
public String formatLabel(double value, boolean isValueX) {
if (isValueX) {
if (value < 5) {
return "small";
} else if (value < 15) {
return "middle";
} else {
return "big";
}
}
return null; // let graphview generate Y-axis label for us
}
});
LinearLayout layout = (LinearLayout) findViewById(R.id.graph1);
layout.addView(graphView);
/*
* use Date as x axis label
*/
long now = new Date().getTime();
data = new GraphViewData[size];
for (int i=0; i<size; i++) {
data[i] = new GraphViewData(now+(i*60*60*24*1000), rand.nextInt(20)); // next day
}
exampleSeries = new GraphViewSeries(data);
if (getIntent().getStringExtra("type").equals("bar")) {
graphView = new BarGraphView(
this
, "GraphViewDemo"
);
} else {
graphView = new LineGraphView(
this
, "GraphViewDemo"
);
((LineGraphView) graphView).setDrawBackground(true);
}
graphView.addSeries(exampleSeries); // data
/*
* date as label formatter
*/
final SimpleDateFormat dateFormat = new SimpleDateFormat("MMM d h.mm");
graphView.setCustomLabelFormatter(new CustomLabelFormatter() {
#Override
public String formatLabel(double value, boolean isValueX) {
if (isValueX) {
Date d = new Date((long) value);
return dateFormat.format(d);
}
return null; // let graphview generate Y-axis label for us
}
});
layout = (LinearLayout) findViewById(R.id.graph2);
layout.addView(graphView);
}
}
What have i to change?How can i create what i want?Anyone can help me? Thank you.