ANDROIDFM Module Learning four source analysis (ix)

Next, let's take a look at Android\vendor\qcom\opensource\fm\fmapp2\src\com\caf\fmradio\presetlist.java.

Define a list list<presetstation>mpresetlist = new arraylist<presetstation> ();

Number of simultaneous stations

public synchronized int Getstationcount () {        return mpresetlist.size ();    }

Get the radio name

Public synchronized string getstationname (int stationnum) {        String name = "";        if (Mpresetlist.size () > Stationnum) {            name = Mpresetlist.get (stationnum). GetName ();        }        return name;    

Get Radio Frequency

public synchronized int getstationfrequency (int stationnum) {        int frequency = 102100;        if (Mpresetlist.size () > Stationnum) {            frequency = Mpresetlist.get (stationnum). Getfrequency ();        }        return frequency;    }

Set the radio frequency

Public synchronized void setstationfrequency (int stationnum, int frequency) {        Presetstation mstation = Mpresetlist.get (stationnum);        Mstation.setfrequency (frequency);    }

Set the station name

Public synchronized void Setstationname (int stationnum, String name) {        Presetstation mstation = Mpresetlist.get ( Stationnum);        Mstation.setname (name);    }

Get the radio by ID

Public synchronized presetstation getstationfromindex (int index) {        int totalpresets = Mpresetlist.size ();        Presetstation station = NULL;        if (Index < totalpresets) {Station            = mpresetlist.get (index);        }        return station;    }

Get the radio through the frequency

Public synchronized presetstation getstationfromfrequency (int frequency) {        int totalpresets = Mpresetlist.size ();        for (int presetnum = 0, presetnum < totalpresets; presetnum++) {            Presetstation station = Mpresetlist.get (presetnum );            if (station = null) {                if (frequency = = Station.getfrequency ()) {return station;}}        }        return null;    }

Add station name and frequency

Public synchronized presetstation addstation (String name, int freq) {        presetstation addstation = new Presetstation ( Name, freq);        if (addstation! = null) {            mpresetlist.add (addstation);        }        return addstation;    }

Add Station

Public synchronized presetstation addstation (Presetstation station) {        presetstation addstation = null;        if (station! = NULL) {            addstation = new Presetstation (station);            Mpresetlist.add (addstation);        }        return addstation;    }

Delete Station

Public synchronized void removestation (int index) {       int totalpresets = Mpresetlist.size ();       if (index >= 0) && (Index < totalpresets))       {          mpresetlist.remove (index);}    }

Clear FM List

Public synchronized void Clear () {        mpresetlist.clear ();    }

/* If the user chooses a new station in this list, this function will be called to update the list.

* /

Public synchronized Boolean setselectedstation (Presetstation selectstation) {        int totalpresets = Mpresetlist.size ( );        if (selectstation! = null) {for            (int presetnum = 0; presetnum < totalpresets; presetnum++) {                Presetstation St ation = Mpresetlist.get (presetnum);                if (station = null) {                    if (selectstation.getfrequency () = = Station.getfrequency ()) {                        if (Selectstation.getname ( ). Equalsignorecase (Station.getname ())) {                            mcurrentstation = presetnum;                            return true        ;        }}}} return false;    }

/* Check if there are same stations present in the list

* /

Public synchronized Boolean samestationexists (Presetstation comparestation) {        int totalpresets = Mpresetlist.size ( );        if (comparestation! = null) {for            (int presetnum = 0; presetnum < totalpresets; presetnum++) {                presetstation s tation = Mpresetlist.get (presetnum);                if (station = null) {                    if (comparestation.getfrequency () = = Station.getfrequency ()) {                        return true;                    }                }            }        }        return false;    }

/* If the user selects a new station in this list, this routine will be called

* Update the list.

* /

Public synchronized Boolean setselectedstation (int stationindex) {        Boolean foundstation = false;        int totalpresets = Mpresetlist.size ();        if (Stationindex < totalpresets) {            mcurrentstation = Stationindex;            Foundstation = true;        }        return foundstation;    }

Select Station

<pre name= "code" class= "java" >public synchronized void Selectstation (Presetstation selectstation) {        int Totalpresets = Mpresetlist.size ();        if (selectstation! = null) {for            (int presetnum = 0; presetnum < totalpresets; presetnum++) {                Presetstation St ation = Mpresetlist.get (presetnum);                if (station = null) {                    if (selectstation.getfrequency () = = Station.getfrequency ()) {                        Mcurrentstation    = Presetnum;                        return;}}}}    

Get the selected station

Public synchronized Presetstation getselectedstation () {        int totalpresets = Mpresetlist.size ();        Presetstation station = NULL;        if (Mcurrentstation < totalpresets) {Station            = Mpresetlist.get (mcurrentstation);        }        return station;    }

Select the next station

Public synchronized Presetstation selectnextstation () {        int totalpresets = Mpresetlist.size ();        Presetstation station = NULL;        if (Totalpresets > 0) {            mcurrentstation + +;            if ((mcurrentstation) >= totalpresets) {                mcurrentstation =0;            }            Station = Mpresetlist.get (mcurrentstation);        }        return station;    }

Select a previous station

Public synchronized Presetstation selectprevstation () {        int totalpresets = Mpresetlist.size ();        Presetstation station = NULL;        if (Totalpresets > 0) {            mcurrentstation--;            if (Mcurrentstation < 0) {                mcurrentstation = totalPresets-1;            }            Station = Mpresetlist.get (mcurrentstation);        }        return station;    }

ANDROIDFM Module Learning four source analysis (ix)