I am currently polishing my apps offline features.
Before those offline features, if I remember correctly, works as I what and of course as it should be. There is a feature where my app calculates or estimates the bill per month of a household and put it in a text view.
It works fine, but the problem is when I return to my main activity and return to that where the computations are done the value of the text view is cleared and when I look at the logcat it’s like the app starts a new computation again while the old computation continues. And even if there’s 2 computations running at the background, it takes some time before the text view for the bill per month gain value again. And sometimes, it uses the new computation’s result for its value. I’ve used or done something to be able to come up with what I need but to no avail. You can see it in the onCreate and onResume of the activity. Here’s the code for that activity:
public class ListViewForm extends Activity {
privateCustomCursorAdaptercustomAdapter;
privateTodoItemDatabase td;
GlobalVariablesgv = new GlobalVariables();
privateListView lv;
Switch swi;
intdevId, devPos;
long devId2;
String devName;
intdevWatt, devStat;
//bill
int id, watt, stat;
String name;
//for timer
Timer timer;
TimerTasktimerTask;
Handler handler, adapter;
//for bill compute
inttotalWatt, timerFirstRun;
inttotalHour = 1;
doublewattHourPerDay, kiloWattPerDay, kiloWattPerMonth;
TextViewlblBillVal;
OnItemClickListeneritemClick;
//global variables
doublecostPerMonth = gv.costPerMonth;
int delay = gv.notifDuration;
doublebillForMonth = gv.billForMonth;
//also for bill compute
doublebillPerMonth;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list_view_form);
lv = (ListView)findViewById(R.id.list_data);
lv.setItemsCanFocus(false);
lv.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
lblBillVal = (TextView)findViewById(R.id.lblBillValue);
lblBillVal.setText("");
swi = (Switch)findViewById(R.id.switchGCM);
//itemClick
itemClick = new OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> parent, View v, intpos, long id) {
Log.d("batelec", "id: "+id+" pos: "+pos);
TodoItemDatabase td = new TodoItemDatabase(getBaseContext());
int x = Integer.valueOf(String.valueOf(id));
Cursor cur = td.getOneRow(x);
if(cur != null){
if(cur.moveToFirst()){
Log.d("batelec", "inside onitemclick, cur count: "+cur.getCount());
devStat = cur.getInt(cur.getColumnIndex(cur.getColumnName(3)));
Log.d("batelec", "1st devStat: "+devStat);
if(devStat == 0){
devStat = 1;
}
else{
devStat = 0;
}
devId = cur.getInt(cur.getColumnIndex(cur.getColumnName(0)));
devName = cur.getString(cur.getColumnIndex(cur.getColumnName(1)));
devWatt = cur.getInt(cur.getColumnIndex(cur.getColumnName(2)));
//devStat
Log.d("batelec", "2nd devStat: "+devStat);
td.updateStat(new TodoItem(devId, devName, devWatt, devStat));
CustomCursorAdaptercr = new CustomCursorAdapter(ListViewForm.this, td.getAllData());
cr.notifyDataSetChanged();
lv.setAdapter(cr);
}
}
}
};
lv.setOnItemClickListener(itemClick);
//itemLongClick
lv.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
@Override
publicbooleanonItemLongClick(AdapterView<?> parent, View v, intpos, long id){
Log.d("batelec", "longclick");
returnonLongListItemClick(v, pos, id);
}
});
td = new TodoItemDatabase(this);
new Handler().post(new Runnable(){
@Override
public void run(){
customAdapter = new CustomCursorAdapter(ListViewForm.this, td.getAllData());
lv.setAdapter(customAdapter);
}
});
useHandler();
if(billForMonth != 0){
Log.d("Batelec", "billForMonth: "+billForMonth);
billPerMonth = billForMonth;
}
}
//itemLongClick
protectedbooleanonLongListItemClick(View v, final intpos, long id) {
Log.d("batelec", "onLongListItemClick id= " + id + " position= " + pos);
devId2 = id;
devPos = pos;
final Dialog dialog = new Dialog(ListViewForm.this);
dialog.setContentView(R.layout.dialog_form_design);
dialog.setTitle("Option");
Button btnEdit = (Button)dialog.findViewById(R.id.btnMainRegister);
Button btnDelete = (Button)dialog.findViewById(R.id.dialogBtnDelete);
btnEdit.setOnClickListener(new OnClickListener(){
public void onClick(View v){
TodoItemDatabase td = new TodoItemDatabase(ListViewForm.this);
Cursor cur = td.getAllData();
if(cur!=null){
if(cur.moveToFirst()){
cur.moveToPosition(pos);
devId = cur.getInt(cur.getColumnIndex("_id"));
devName = cur.getString(cur.getColumnIndex("deviceName"));
devWatt = cur.getInt(cur.getColumnIndex("deviceWattage"));
devStat = cur.getInt(cur.getColumnIndex("deviceStatus"));
Log.d("batelec", "devID: "+devId+" devName: "+devName+" devWatt: "+devWatt+" devStat: "+devStat);
}
}
Intent i = new Intent(getBaseContext(),AddDeviceForm.class);
Bundle b = new Bundle();
Log.d("batelec", "sent id: "+devId);
b.putInt("xtraDevId", devId);
b.putString("xtraDevName", devName);
b.putInt("xtraWatt", devWatt);
b.putInt("xtraStat", devStat);
Log.d("batelec", "sent devStat: "+devStat);
i.putExtras(b);
startActivity(i);
finish();
}
});
btnDelete = (Button)dialog.findViewById(R.id.dialogBtnDelete);
btnDelete.setOnClickListener(new OnClickListener(){
public void onClick(View v){
TodoItemDatabase td = new TodoItemDatabase(ListViewForm.this);
Cursor cur = td.getAllData();
if(cur!=null){
if(cur.moveToFirst()){
cur.moveToPosition(pos);
devId = cur.getInt(cur.getColumnIndex("_id"));
devName = cur.getString(cur.getColumnIndex("deviceName"));
devWatt = cur.getInt(cur.getColumnIndex("deviceWattage"));
devStat = cur.getInt(cur.getColumnIndex("deviceStatus"));
devPos = pos;
Log.d("batelec", "devID: "+devId+" devName: "+devName+" devWatt: "+devWatt+" devStat: "+devStat+" devPos: "+devPos);
}
}
Bundle b = new Bundle();
b.putInt("xtraId", devId);
b.putInt("xtraPos", devPos);
DialogFragmentdeleteDiag = new DeleteDialog();
deleteDiag.setArguments(b);
deleteDiag.show(getFragmentManager(), "deleteDevice");
}
});
dialog.show();
Log.d("batelec", "showing dialog");
return true;
}
public void useHandler(){
handler = new Handler();
handler.postDelayed(runnable, 1000);
}
public void stopRunnable(View v){
handler.removeCallbacks(runnable);
}
private Runnable runnable = new Runnable(){
@Override
public void run(){
TodoItemDatabase td = new TodoItemDatabase(getBaseContext());
Cursor cur = td.getActiveDevice();
if(timerFirstRun == 0){
timerFirstRun++;
Log.d("batelec", "timer = 0");
}
else{
try{
if(cur != null){
Toast.makeText(getBaseContext(), "1 hour elapsed", Toast.LENGTH_LONG).show();
cur.moveToFirst();
for(int x = 1; x <= cur.getCount(); x++){
id = cur.getInt(cur.getColumnIndex("_id"));
name = cur.getString(cur.getColumnIndex("deviceName"));
watt = cur.getInt(cur.getColumnIndex("deviceWattage"));
stat = cur.getInt(cur.getColumnIndex("deviceStatus"));
totalWatt = totalWatt + watt;
Log.d("batelec", "id: " + id + " name: " + name + " watt: " + watt + " status: " + stat);
cur.moveToNext();
}
//totalWatt = 125;
Log.d("batelec", "total watt: "+totalWatt);
wattHourPerDay = totalWatt;//all active device wattage
Log.d("batelec", "wattPerHour: "+wattHourPerDay+" (totalWatt)");
kiloWattPerDay = wattHourPerDay / 1000;//all device watts divided by 1000 watts = 1 kW
Log.d("batelec", "kilowatt per day: "+kiloWattPerDay+" (wattPerHour / 1000)");
kiloWattPerMonth = (wattHourPerDay * 30) / 1000;//watts per month
Log.d("batelec", "kiloWatt per month: "+kiloWattPerMonth+" ((wattPerHour * 30) / 1000)");
billPerMonth = kiloWattPerMonth * costPerMonth;//estimated bill per month
Log.d("batelec", "bill per month: "+billPerMonth+" (kiloWattPerMonth * costPerMonth)");
Double res;
DecimalFormatdf = new DecimalFormat("#.##");
res = Double.valueOf(df.format(billPerMonth));
Log.d("batelec", "new bill: "+res);
lblBillVal.setText(String.valueOf(res));
}
}catch(Exception e){
Log.d("batelec", ""+e);
}
}
handler.postDelayed(runnable, delay);
//send billPerMonth to Global Variables
gv.billForMonth = billPerMonth;
}
};
public void onResume(){
super.onResume();
Log.d("Batelec", "inside listviewformonResume");
billPerMonth = gv.billForMonth;
}
}
Here is the logcat log:
09-08 09:14:43.130: D/batelec(1081): id: 2 name: Incandescent Bulb watt: 40 status: 1
09-08 09:14:43.130: D/batelec(1081): total watt: 40
09-08 09:14:43.140: D/batelec(1081): wattPerHour: 40.0 (totalWatt)
09-08 09:14:43.140: D/batelec(1081): kilowatt per day: 0.04 (wattPerHour / 1000)
09-08 09:14:43.140: D/batelec(1081): kiloWatt per month: 1.2 ((wattPerHour * 30) / 1000)
09-08 09:14:43.140: D/batelec(1081): bill per month: 10.26816 (kiloWattPerMonth * costPerMonth)
09-08 09:14:43.160: D/batelec(1081): new bill: 10.27
09-08 09:15:01.930: D/Batelec(1081): inside listviewformonResume
09-08 09:15:04.340: D/batelec(1081): timer = 0
09-08 09:15:04.690: D/batelec(1081): Name: Microwave Stat: 0
09-08 09:15:04.890: D/batelec(1081): Name: Incandescent Bulb Stat: 1
09-08 09:15:33.270: D/batelec(1081): id: 2 name: Incandescent Bulb watt: 40 status: 1
09-08 09:15:33.270: D/batelec(1081): total watt: 80
09-08 09:15:33.270: D/batelec(1081): wattPerHour: 80.0 (totalWatt)
09-08 09:15:33.280: D/batelec(1081): kilowatt per day: 0.08 (wattPerHour / 1000)
09-08 09:15:33.280: D/batelec(1081): kiloWatt per month: 2.4 ((wattPerHour * 30) / 1000)
09-08 09:15:33.280: D/batelec(1081): bill per month: 20.53632 (kiloWattPerMonth * costPerMonth)
09-08 09:15:33.280: D/batelec(1081): new bill: 20.54
09-08 09:15:54.480: D/batelec(1081): id: 2 name: Incandescent Bulb watt: 40 status: 1
09-08 09:15:54.480: D/batelec(1081): total watt: 40
09-08 09:15:54.490: D/batelec(1081): wattPerHour: 40.0 (totalWatt)
09-08 09:15:54.490: D/batelec(1081): kilowatt per day: 0.04 (wattPerHour / 1000)
09-08 09:15:54.490: D/batelec(1081): kiloWatt per month: 1.2 ((wattPerHour * 30) / 1000)
09-08 09:15:54.490: D/batelec(1081): bill per month: 10.26816 (kiloWattPerMonth * costPerMonth)
09-08 09:15:54.490: D/batelec(1081): new bill: 10.27
09-08 09:16:23.390: D/batelec(1081): id: 2 name: Incandescent Bulb watt: 40 status: 1
09-08 09:16:23.390: D/batelec(1081): total watt: 120
09-08 09:16:23.390: D/batelec(1081): wattPerHour: 120.0 (totalWatt)
09-08 09:16:23.400: D/batelec(1081): kilowatt per day: 0.12 (wattPerHour / 1000)
09-08 09:16:23.400: D/batelec(1081): kiloWatt per month: 3.6 ((wattPerHour * 30) / 1000)
09-08 09:16:23.400: D/batelec(1081): bill per month: 30.804480000000005 (kiloWattPerMonth * costPerMonth)
09-08 09:16:23.400: D/batelec(1081): new bill: 30.8
09-08 09:16:44.620: D/batelec(1081): id: 2 name: Incandescent Bulb watt: 40 status: 1
09-08 09:16:44.620: D/batelec(1081): total watt: 80
09-08 09:16:44.630: D/batelec(1081): wattPerHour: 80.0 (totalWatt)
09-08 09:16:44.630: D/batelec(1081): kilowatt per day: 0.08 (wattPerHour / 1000)
09-08 09:16:44.640: D/batelec(1081): kiloWatt per month: 2.4 ((wattPerHour * 30) / 1000)
09-08 09:16:44.640: D/batelec(1081): bill per month: 20.53632 (kiloWattPerMonth * costPerMonth)
09-08 09:16:44.650: D/batelec(1081): new bill: 20.54
As you can see there are 2 computations running but the newest or the one with the lower values is used by the app. I don’t know why that happens and I don’t remember doing something to my app to do that. I just added GCM to my app, will it affect my offline features. Please help.
