Android FM module learning-source code parsing-Methods for saving the FM Module

Android FM module learning-source code parsing-Methods for saving the FM Module

What I want to share today is the storage method of the FM module, namely, FmSharedPreferences. java.

FmSharedPreferences (Context context) loads the Load () method in the constructor,

 

public void  Load(){      Log.d(LOGTAG, "Load preferences ");      if(mContext == null)      {         return;      }      SharedPreferences sp = mContext.getSharedPreferences(SHARED_PREFS, Context.MODE_PRIVATE);      mTunedFrequency = sp.getInt(PREF_LAST_TUNED_FREQUENCY, DEFAULT_NO_FREQUENCY);      mRecordDuration = sp.getInt(LAST_RECORD_DURATION, RECORD_DUR_INDEX_0_VAL);      mAFAutoSwitch = sp.getBoolean(LAST_AF_JUMP_VALUE, true);      mAudioOutputMode = sp.getBoolean(AUDIO_OUTPUT_MODE, true);      if(sp.getInt(FMCONFIG_COUNTRY, 0) == REGIONAL_BAND_USER_DEFINED) {         mBandMinFreq = sp.getInt(FMCONFIG_MIN, mBandMinFreq);         mBandMaxFreq = sp.getInt(FMCONFIG_MAX, mBandMaxFreq);         mChanSpacing = sp.getInt(FMCONFIG_STEP, mChanSpacing);      }      int num_lists = sp.getInt(LIST_NUM, 1);      if (mListOfPlists.size() == 0) {      for (int listIter = 0; listIter < num_lists; listIter++) {             String listName = sp.getString(LIST_NAME + listIter, "FM - " + (listIter+1));             int numStations = sp.getInt(STATION_NUM + listIter, 1);             if (listIter == 0) {                 createFirstPresetList(listName);             } else {                 createPresetList(listName);             }             PresetList curList = mListOfPlists.get(listIter);             for (int stationIter = 0; stationIter < numStations; stationIter++) {                  String stationName = sp.getString(STATION_NAME + listIter + "x" + stationIter,                                                      DEFAULT_NO_NAME);                  int stationFreq = sp.getInt(STATION_FREQUENCY + listIter + "x" + stationIter,                                                   DEFAULT_NO_FREQUENCY);                  PresetStation station = curList.addStation(stationName, stationFreq);                  int stationId = sp.getInt(STATION_ID + listIter + "x" + stationIter,                                              DEFAULT_NO_STATIONID);                  station.setPI(stationId);                  int pty = sp.getInt(STATION_PTY + listIter + "x" + stationIter, DEFAULT_NO_PTY);                  station.setPty(pty);                  int rdsSupported = sp.getInt(STATION_RDS + listIter + "x" + stationIter,                                                 DEFAULT_NO_RDSSUP);                  if (rdsSupported != 0) {                      station.setRDSSupported(true);                  } else {                      station.setRDSSupported(false);                  }      /* Load Configuration */           setCountry(sp.getInt(FMCONFIG_COUNTRY, REGIONAL_BAND_NORTH_AMERICA));      /* Last list the user was navigating */      mListIndex = sp.getInt(LAST_LIST_INDEX, 0);      if(mListIndex >= num_lists)      {mListIndex=0;      }   }

 

Initialize and retrieve sp data

Set the local frequency based on the system initialization Region

 

/*Load Configuration */     if (Locale.getDefault().equals(Locale.CHINA)) {         setCountry(sp.getInt(FMCONFIG_COUNTRY, REGIONAL_BAND_CHINA));     } else {         setCountry(sp.getInt(FMCONFIG_COUNTRY, REGIONAL_BAND_NORTH_AMERICA));     }     /* Last list the user was navigating */

 

Storage frequency

Public void Save ()

 

Set the default Region

Public static void SetDefaults ()

 

Set adjustment frequency

Public static void setTunedFrequency (intfrequency)

 

 

Get adjustment frequency

Public static int getTunedFrequency ()

 

Get next frequency

Public static int getNextTuneFrequency (intfrequency)

 

Obtain the previous frequency

Public static int getPrevTuneFrequency (intfrequency)

 

/*** @ Param mFMConfiguration setting */public static void setFMConfiguration (FmConfig mFMConfig)/*** @ return the mFMConfiguration */public static FmConfig getFMConfiguration () {return mFMConfiguration ;}

Set the frequency range of fm playback.

Public static void setRadioBand (int band)

 

Obtain the fm frequency range limit

Public static int getRadioBand ()

 

Get Interval

Public static int getChSpacing ()

 

Set Remote Data Service

Public static void setRdsStd (int std)

MFMConfiguration. setRdsStd (std );

 

Obtain Remote Data Service

Public static int getRdsStd ()

MFMConfiguration. getRdsStd ();

 

 

Set country and region

Public static void setCountry (intnCountryCode)

 

Obtain country/region

Public static int getCountry ()

 

Set sound output Template

SetAudioOutputMode
 

Set whether the recording lasts

Public static void setRecordDuration (intdurationIndex)

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