我有一个 Wifi 类，它有几个广播接收器，用于监听 Wifi 连接状态、Wifi Rssi 级别等的变化......
我希望能够将这些数据传递给另一个“引擎”对象，并且仍然保持数据动态变化。
我目前在“Engine”类中创建了一个 Wifi 对象并运行它的方法，然后数据会在 log cat 的 Log 语句中动态显示。
我的问题是尝试将动态变化的数据获取到引擎，当我尝试获取数据时，它会获取第一个值并将其保留在该位置而无需更新。
所以我想知道我的选择是如何做到这一点的？
如果有任何帮助，以下是我当前的代码设置：
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public Wifi(Context context){
mainWifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
}
public int getCurrentWifiState() {
return currentWifiState;
}
public void setCurrentWifiState(int currentWifiState) {
this.currentWifiState = currentWifiState;
}
public String getConnectedSSID() {
return connectedSSID;
}
public void setConnectedSSID(String connectedSSID) {
this.connectedSSID = connectedSSID;
}
public int getConnectedLevel() {
return connectedLevel;
}
public void setConnectedLevel(int connectedLevel) {
this.connectedLevel = connectedLevel;
}
//method to do a scan and receive info about all access points available
public List<ScanResult> scan(final Context context){
receiverWifi = new WifiReceiver();
mainWifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
context.registerReceiver(receiverWifi, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
mainWifi.startScan();
Log.d("WIFI DEBUG","\nStarting Scan...\n");
wifiList = mainWifi.getScanResults();
return wifiList;
}
class WifiReceiver extends BroadcastReceiver {
public void onReceive(Context c, Intent intent) {
sb = new StringBuilder();
wifiList = mainWifi.getScanResults();
ListIterator<ScanResult> results = wifiList.listIterator();
while (results.hasNext()) {
ScanResult info = results.next();
String wifiInfo = "Name: " + info.SSID + "; capabilities = " + info.capabilities + "; sig str = " + info.level + "dBm";
Log.v("WiFi", wifiInfo);
Log.d("Signal Level", "Signal Level : " + mainWifi.calculateSignalLevel(info.level, 5));
}
}
}
//method to listen for changes in the level of the wifi connection
public void initializeWiFiListener(Context context){
Log.d("WIFI", "executing initializeWiFiListener");
String connectivity_context = Context.WIFI_SERVICE;
final WifiManager wifi = (WifiManager)context.getSystemService(connectivity_context);
if(!wifi.isWifiEnabled()){
if(wifi.getWifiState() != WifiManager.WIFI_STATE_ENABLING){
//wifi.setWifiEnabled(true);
}
}
rssiListener = new BroadcastReceiver(){
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if(WifiManager.RSSI_CHANGED_ACTION.equals(action)){
WifiInfo data = mainWifi.getConnectionInfo();
Log.d("WIFI", "RSSI has changed");
if(mainWifi.getConnectionInfo()!=null){
setConnectedSSID(data.getSSID());
setConnectedLevel(data.getRssi());
Log.d("WIFI", "new RSSI = " + data.getSSID()+ " " + data.getRssi() + "dBm");
}
}
}
};
//leak here - need to de reg receiver
context.registerReceiver(rssiListener, new IntentFilter(WifiManager.RSSI_CHANGED_ACTION));
}
//method to listen for changes in the connection to a wifi access point
public void changeWiFiListener(Context context){
Log.d("WIFI", "executing initializeWiFiListener");
String connectivity_context = Context.WIFI_SERVICE;
final WifiManager wifi = (WifiManager)context.getSystemService(connectivity_context);
if(!wifi.isWifiEnabled()){
if(wifi.getWifiState() != WifiManager.WIFI_STATE_ENABLING){
//wifi.setWifiEnabled(true);
}
}
wifiChangeListener = new BroadcastReceiver(){
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if(WifiManager.WIFI_STATE_CHANGED_ACTION.equals(action)){
Log.d("WIFI", "WIFI has changed");
int wifiState = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, -1);
Log.d("WIFI", "WIFI State = " + wifiState);
setCurrentWifiState(wifiState);
}
}
};
//Leak here - not unregistering receiver
context.registerReceiver(wifiChangeListener, new IntentFilter(WifiManager.WIFI_STATE_CHANGED_ACTION));
}
public WifiReceiver getReceiverWifi() {
return receiverWifi;
}
public void setReceiverWifi(WifiReceiver receiverWifi) {
this.receiverWifi = receiverWifi;
还有我的引擎代码：
public Engine(Context aContext){
context = aContext;
cm = new CallManager(aContext);
wifiManager = new Wifi(context);
wifiManager.initializeWiFiListener(context);
wifiManager.changeWiFiListener(context);
clc = new CallLogController();
}
public void controlCalls(){
int currentWifiState = wifiManager.getCurrentWifiState();
cm.monitorOutgoingCalls(context, currentWifiState, clc);
}
public void unRegAllRecievers(){
wifiManager.unregRegisters(context);
cm.unRegReciever(context);
}
public void doWifiScan(){
scanTask = new TimerTask() {
public void run() {
handler.post(new Runnable() {
public void run() {
wifiManager.scan(context);
Log.d("TIMER", "Timer set off");
}
});
}};
t.schedule(scanTask, 300, 30000);
}
public void stopScan(){
scanTask.cancel();
t.cancel();
//boolean tf = scanTask.cancel();
//Log.d("TIMER", "Timer True or False? : " + tf);
}
}
所以我只是想知道当它从广播接收器接收到更改时，确保来自 Wifi 类的数据在引擎中不断更新的最佳解决方案是什么？