センサーの状態に基づいてSMSを送信するアプリを開発しています。
SMS は、GPS 位置とセンサー値で構成されます。
エミュレータで試してみるとgps値がnullになり、携帯電話で試してみるとエラーが表示されました。（アプリはそのまま停止）
これが私のコードです：
public class MainActivity extends Activity implements SensorEventListener , LocationListener {
private SensorManager sensorManager;
TextView xCoor; // declare X axis object
TextView yCoor; // declare Y axis object
TextView zCoor; // declare Z axis object
TextView aCoor;
public static float x;
public static float y;
public static float z;
String theftreport;
String Text;
@Override
public void onCreate(Bundle savedInstanceState)
{
//for sensor
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
xCoor=(TextView)findViewById(R.id.xcoor); // create X axis object
yCoor=(TextView)findViewById(R.id.ycoor); // create Y axis object
zCoor=(TextView)findViewById(R.id.zcoor); // create Z axis object
sensorManager=(SensorManager)getSystemService(SENSOR_SERVICE);
sensorManager.registerListener(this,sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),SensorManager.SENSOR_DELAY_FASTEST);
//for gps
// super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
LocationManager mlocManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
LocationListener mlocListener = new MainActivity();
mlocManager.requestLocationUpdates( LocationManager.GPS_PROVIDER, 0, 0, mlocListener);
}
@Override
public boolean onCreateOptionsMenu(Menu menu)
{
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) { }
@Override
public void onLocationChanged(Location loc) {
loc.getLatitude();
loc.getLongitude();
Text = "My current location is: " +"Latitud =" +
" " + loc.getLatitude() +"Longitud = " + loc.getLongitude();
// Toast.makeText( getApplicationContext(), Text, Toast.LENGTH_SHORT).show();
}
@Override
public void onSensorChanged(SensorEvent event){
// check sensor type
if(event.sensor.getType()==Sensor.TYPE_ACCELEROMETER){
// assign direction
x=event.values[0];
y=event.values[1];
z=event.values[2];
xCoor.setText("X: "+x);
yCoor.setText("Y: "+y);
zCoor.setText("Z: "+z);
if(x>=5)
{
theftreport=Text.toString() + "Crash rate : " + x;
SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage("900XXXXXXX", null, theftreport, null,null);
Toast.makeText(MainActivity.this, "message sent", Toast.LENGTH_LONG).show();
}
}
}
@Override
public void onProviderDisabled(String provider) {
Toast.makeText( getApplicationContext(), "Gps Disabled", Toast.LENGTH_SHORT ).show();
}
@Override
public void onProviderEnabled(String provider) {
Toast.makeText( getApplicationContext(), "Gps Enabled", Toast.LENGTH_SHORT).show();
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
}