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我正在嘗試創建一個android應用程序,該應用程序的範圍爲用戶給出的區域中的信標。 問題是,當我添加距離約束並回到mainactivity時,該應用程序還顯示前一個測距實例。Android - 無法停止測距信標
對於實施例:
的距離的默認值爲10m當我改變至5μm的距離,它仍然顯示的信標爲10m開。如果我將距離值更改爲2米,我將顯示5米範圍的實例和10米範圍的實例。
MAINACTIVITY
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if(id == R.id.settings) {
try {
beaconManager.stopRangingBeaconsInRegion(new Region("myRangingUniqueId", null, null, null));
beaconManager.unbind(this);
Log.w(TAG,"Stopped ranging");
} catch (RemoteException e) {
e.printStackTrace();
}
startActivity(new Intent(MainActivity.this, Settings.class));
}
return true;
}
可變距離在OnCreate中
SharedPreferences sharedPref = getApplication().getSharedPreferences("Settings",Context.MODE_PRIVATE);
distance = sharedPref.getFloat("distance",10.0f);
測距功能
@Override
public void onBeaconServiceConnect() {
//beacon ranging
beaconManager.addRangeNotifier(new RangeNotifier() {
@Override
public void didRangeBeaconsInRegion(Collection<Beacon> beacons, Region region) {
if (beacons.size() > 0) {
for (Beacon beacon : beacons) {
if(beacon.getDistance()<= distance) {
Log.i(TAG,beacon.getBluetoothName());
Log.i(TAG,String.valueOf(distance));
}
}
}
}
});
try {
beaconManager.startRangingBeaconsInRegion(new Region("myRangingUniqueId", null, null, null));
} catch (RemoteException e) { }
}
設置
Button button;
EditText distance;
Float distanceValue;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_settings);
setTitle("Settings");
SharedPreferences sharedPref = getApplication().getSharedPreferences("Settings",Context.MODE_PRIVATE);
final SharedPreferences.Editor editor = sharedPref.edit();
button = (Button) findViewById(R.id.button);
distance = (EditText) findViewById(R.id.distanceValue);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(distance.getText().toString().isEmpty()){
distance.requestFocus();
distance.setError("Required");
}
else{
distanceValue = Float.valueOf(distance.getText().toString());
editor.putFloat("distance",distanceValue);
editor.commit();
startActivity(new Intent(Settings.this,MainActivity.class));
}
}
});
LOG
之前
06-28 14:54:21.724 13866-18103/com.example.beaconscanner I/MonitoringActivity: proxiteeMini_00037
06-28 14:54:21.724 13866-18103/com.example.beaconscanner I/MonitoringActivity: 10.0
06-28 14:54:21.732 13866-18103/com.example.beaconscanner I/MonitoringActivity: proxiteeMini_00035
06-28 14:54:21.732 13866-18103/com.example.beaconscanner I/MonitoringActivity: 10.0
後
06-28 14:56:37.778 13866-18103/com.example.beaconscanner I/MonitoringActivity: proxiteeMini_00035
06-28 14:56:37.778 13866-18103/com.example.beaconscanner I/MonitoringActivity: 5.0
06-28 14:56:37.788 13866-18103/com.example.beaconscanner I/MonitoringActivity: proxiteeMini_00035
06-28 14:56:37.788 13866-18103/com.example.beaconscanner I/MonitoringActivity: 5.0
06-28 14:56:37.801 13866-18103/com.example.beaconscanner I/MonitoringActivity: proxiteeMini_00037
06-28 14:56:37.801 13866-18103/com.example.beaconscanner I/MonitoringActivity: 10.0
proxiteeMini_00037爲10m範圍內
proxiteeMini_00035爲5m範圍
你能告訴你如何設置變量'distance'的值嗎? – davidgyoung
相應地編輯了這個問題。 – Burhan