Databases
StackOverflow2013
Postsdbo
POMy PhoneStateListener is not being called for showing signal strength
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POMy PhoneStateListener is not being called for showing signal strength
    primarykey
    data
    text
    <p>I am trying to show the current signal strength and current cell ID and Lac in my application for 3g network. Since it has to be compatible for API-8, I am using SignalStrength class from android.telephony. When I click a button, for now I want it to show the CID, Lac and signal strength of current cell. I am getting the CID and lac but the signal strength is always showing 0. The code is given below:</p> <pre><code>public void onClick(View v) { switch (v.getId()) { case R.id.bShowCell: GsmCellLocation location; String cellID = ""; String lac = ""; Context context = (Context) getApplicationContext(); TelephonyManager tm = (TelephonyManager) context .getSystemService(Context.TELEPHONY_SERVICE); location = (GsmCellLocation) tm.getCellLocation(); cellID = String.valueOf(location.getCid()); lac = String.valueOf(location.getLac()); CurCell.setText(cellID); CellLac.setText(lac); CurStrgth.setText(getRSSI()); } } public String getRSSI() { MyListener = new MyPhoneStateListener(); Tel = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE); Tel.listen(MyListener, PhoneStateListener.LISTEN_SIGNAL_STRENGTHS); String strength = MyListener.getStrength(); return strength; } class MyPhoneStateListener extends PhoneStateListener { public int singalStrengths; @Override public void onSignalStrengthsChanged(SignalStrength signalStrength) { super.onSignalStrengthsChanged(signalStrength); int asu = signalStrength.getGsmSignalStrength(); singalStrengths = -113 + 2 * asu; } public String getStrength() { return String.valueOf(singalStrengths); } } </code></pre> <p>I have checked many examples online and I think my code is okay. But when I checked it in debug mode, I see that when I click the button, the program never goes in onSignalStrengthsChanged. Is there anything I am missing? </p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USMr_and_Mrs_D
    1. USLutful Kabir
    plurals
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    3. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POMy PhoneStateListener is not being called for showing signal strength
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    1. COdo you register your listener ? do you have the permissions ? if yes try making `singalStrengths` static - or even better store it in preferences. Even so it won't show the latest signal - see http://stackoverflow.com/questions/3888775/instant-signal-strength
      singulars
      1. POMy PhoneStateListener is not being called for showing signal strength
      1. USMr_and_Mrs_D
    2. COwell It was long ago, I remember like when I cancelled the getRSSI() method and put the listener and .getStrength() inside the OnCreate() directly, it worked fine. But to be honest Still don't know why it worked fine.
      singulars
      1. POMy PhoneStateListener is not being called for showing signal strength
      1. USLutful Kabir
    3. COPost it as an answer - I don't know why it worked - are you sure it was the only change you made ?
      singulars
      1. POMy PhoneStateListener is not being called for showing signal strength
      1. USMr_and_Mrs_D
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload