Android FM模块学习之四源码解析(四)
我今天想分享的是FM模块的保存方法,即FmSharedPreferences.java
FmSharedPreferences(Context context)在构造方法中加载Load()方法,
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; } }
初始化取出sp一些数据
根据系统初始化地区设置当地频率
/*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 */
保存频率
public void Save()
设置默认的地区
public static void SetDefaults()
设置调整频率
public static void setTunedFrequency(intfrequency)
获取调整频率
public static int getTunedFrequency()
获取下一个频率
public static int getNextTuneFrequency(intfrequency)
获取上一个频率
public static int getPrevTuneFrequency(intfrequency)
/ * * * @param mFMConfiguration mFMConfiguration设置 * / public static void setFMConfiguration(FmConfig mFMConfig) /** *@return the mFMConfiguration */ public static FmConfig getFMConfiguration() { return mFMConfiguration; }
设置fm播放的频率范围
public static void setRadioBand(int band)
获取fm频率范围限制
public static int getRadioBand()
获取间隔
public static int getChSpacing()
设置远程数据服务
public static void setRdsStd(int std)
mFMConfiguration.setRdsStd(std);
获取远程数据服务
public static int getRdsStd()
mFMConfiguration.getRdsStd();
设置国家地区
public static void setCountry(intnCountryCode)
获取国家地区
public static int getCountry()
设置声音输出模板
setAudioOutputMode
设置录音是否持续
public static void setRecordDuration(intdurationIndex)
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