接上一篇,接下來咱們看看android\vendor\qcom\opensource\fm\fmapp2\src\com\caf\fmradio\PresetList.javajava
定義一個List列表List<PresetStation>mPresetList = new ArrayList<PresetStation>();android
同步電臺數量app
public synchronized int getStationCount(){
return mPresetList.size();
}函數
得到電臺名字rem
public synchronized String getStationName(int stationNum){
String name = "";
if (mPresetList.size() > stationNum){
name = mPresetList.get(stationNum).getName();
}
return name;
}get
獲取電臺頻率同步
public synchronized int getStationFrequency(int stationNum){
int frequency = 102100;
if (mPresetList.size() > stationNum){
frequency = mPresetList.get(stationNum).getFrequency();
}
return frequency;
}io
設置電臺頻率List
public synchronized void setStationFrequency(int stationNum, int frequency){
PresetStation mStation = mPresetList.get(stationNum);
mStation.setFrequency(frequency);
}
設置電臺名字select
public synchronized void setStationName(int stationNum, String name){
PresetStation mStation = mPresetList.get(stationNum);
mStation.setName(name);
}
經過ID獲得電臺
public synchronized PresetStation getStationFromIndex(int index){
int totalPresets = mPresetList.size();
PresetStation station = null;
if (index < totalPresets) {
station = mPresetList.get(index);
}
return station;
}
經過頻率獲得電臺
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;
}
添加電臺名字和頻率
public synchronized PresetStation addStation(String name, int freq){
PresetStation addStation = new PresetStation(name, freq);
if(addStation != null) {
mPresetList.add(addStation);
}
return addStation;
}
添加電臺
public synchronized PresetStation addStation(PresetStation station){
PresetStation addStation = null;
if(station != null) {
addStation = new PresetStation (station);
mPresetList.add(addStation);
}
return addStation;
}
刪除電臺
public synchronized void removeStation(int index){
int totalPresets = mPresetList.size();
if((index >= 0) && (index < totalPresets))
{
mPresetList.remove(index);
}
}
清除調頻列表
public synchronized void clear(){
mPresetList.clear();
}
/ *若是用戶選擇一個新電臺在這個列表中,將調用這個函數來更新列表。
* /
public synchronized boolean setSelectedStation(PresetStation selectStation){
int totalPresets = mPresetList.size();
if (selectStation != null) {
for (int presetNum = 0; presetNum < totalPresets; presetNum++ ) {
PresetStation station = mPresetList.get(presetNum);
if (station != null) {
if(selectStation.getFrequency() == station.getFrequency()) {
if(selectStation.getName().equalsIgnoreCase(station.getName())) {
mCurrentStation = presetNum;
return true;
}
}
}
}
}
return false;
}
/ *檢查是否有相同電臺存在在列表中
* /
public synchronized boolean sameStationExists(PresetStation compareStation){
int totalPresets = mPresetList.size();
if (compareStation != null) {
for (int presetNum = 0; presetNum < totalPresets; presetNum++ ) {
PresetStation station = mPresetList.get(presetNum);
if (station != null) {
if(compareStation.getFrequency() == station.getFrequency()) {
return true;
}
}
}
}
return false;
}
/ *若是用戶在這個列表中選擇一個新電臺,將調用這個例程
*更新列表。
* /
public synchronized boolean setSelectedStation(int stationIndex){
boolean foundStation = false;
int totalPresets = mPresetList.size();
if (stationIndex < totalPresets) {
mCurrentStation = stationIndex;
foundStation = true;
}
return foundStation;
}
選擇電臺
public synchronized void selectStation(PresetStation selectStation){
int totalPresets = mPresetList.size();
if (selectStation != null) {
for (int presetNum = 0; presetNum < totalPresets; presetNum++ ) {
PresetStation station = mPresetList.get(presetNum);
if (station != null) {
if(selectStation.getFrequency() == station.getFrequency()) {
mCurrentStation = presetNum;
return;
}
}
}
}
}
獲取選擇的站
public synchronized PresetStation getSelectedStation(){
int totalPresets = mPresetList.size();
PresetStation station = null;
if (mCurrentStation < totalPresets) {
station = mPresetList.get(mCurrentStation);
}
return station;
}
選擇下一個電臺
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;
}
選擇上一個電臺
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;