我在MainActivity中实现了以下服务，我想通过Buttonclick启动并重新启动Service。但是当我点击停止时，Service仍会发送Location updates！当我按下停止按钮时，如何立即停止Service，我的错是什么？
服务类：
public class LocationNotifyService extends Service implements
LocationListener,
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener {
final static String MY_ACTION = "MY_ACTION";
LocationRequest mLocationRequest;
GoogleApiClient mGoogleApiClient;
public static Location mCurrentLocation;
private static final long INTERVAL = 1000 * 10;
private static final long FASTEST_INTERVAL = 1000 * 5;
private static final int TWO_MINUTES = 1000 * 60 * 2;
public static final String MOVEMENT_UPDATE = "com.client.gaitlink.AccelerationService.action.MOVEMENT_UPDATE";
public static final String ACCELERATION_X = "com.client.gaitlink.AccelerationService.ACCELERATION_X";
public static final String ACCELERATION_Y = "com.client.gaitlink.AccelerationService.ACCELERATION_Y";
public static final String ACCELERATION_Z = "com.client.gaitlink.AccelerationService.ACCELERATION_Z";
public static final String ACCELERATION_PACE = "com.client.gaitlink.AccelerationService.ACCELERATION_PACE";
public static final String ACCELERATION_TIME = "com.client.gaitlink.AccelerationService.ACCELERATION_TIME";
@Override
public void onCreate()
{
Log.d("create", "create");
//show error dialog if GoolglePlayServices not available
if (isGooglePlayServicesAvailable()) {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(INTERVAL);
mLocationRequest.setFastestInterval(FASTEST_INTERVAL);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
mLocationRequest.setSmallestDisplacement(5); /* min dist for location change, here it is 10 meter */
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
mGoogleApiClient.connect();
}
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
return super.onStartCommand(intent, flags, startId);
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
//Check Google play is available or not
private boolean isGooglePlayServicesAvailable() {
int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getApplicationContext());
return ConnectionResult.SUCCESS == status;
}
@Override
public void onConnected(Bundle bundle) {
startLocationUpdates();
}
@Override
public void onConnectionSuspended(int i) {
}
protected void startLocationUpdates()
{
Log.d("start","start");
try {
PendingResult<Status> pendingResult = LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
} catch (IllegalStateException e) {}
}
@Override
public void onLocationChanged(Location location)
{
Log.d("changed", "changed");
Intent intent = new Intent(MOVEMENT_UPDATE);
intent.setAction(MY_ACTION);
intent.putExtra(ACCELERATION_X, location.getLongitude());
intent.putExtra(ACCELERATION_Y, location.getLatitude());
intent.putExtra(ACCELERATION_Z, location.getAltitude());
intent.putExtra(ACCELERATION_PACE, location.getSpeed());
intent.putExtra(ACCELERATION_TIME, location.getTime());
sendBroadcast(intent);
Log.d("send","send");
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
public boolean stopService(Intent name)
{
// TODO Auto-generated method stub
mGoogleApiClient.disconnect();
return super.stopService(name);
}
@Override
public void onDestroy() {
super.onDestroy();
}
}
MainActivity.java：
public class MainActivity extends AppCompatActivity {
Button start;
Button stop;
TextView xyz;
MyReceiver myReceiver;
double accelerationX;
double accelerationY;
double accelerationZ;
float pace;
List<Double> pace_list = new ArrayList<Double>();
Location oldLoc = new Location("locationOld");
Location newLoc = new Location("locationNew");
double distance = 0;
long time = 0;
String temp;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
start = (Button) findViewById(R.id.start);
stop = (Button) findViewById(R.id.stop);
xyz = (TextView) findViewById(R.id.xyz);
start.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.d("click", "click");
myReceiver = new MyReceiver();
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(LocationNotifyService.MY_ACTION);
registerReceiver(myReceiver, intentFilter);
Intent intent = new Intent(MainActivity.this,
LocationNotifyService.class);
startService(intent);
//startService(new Intent(MainActivity.this, LocationNotifyService.class));
}
});
stop.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v)
{
Intent intent = new Intent(MainActivity.this,
LocationNotifyService.class);
stopService(intent);
Log.d("stop", "stop");
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
private class MyReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
Log.d("revcive", "recive");
accelerationX = intent.getDoubleExtra(LocationNotifyService.ACCELERATION_X, 0);
accelerationY = intent.getDoubleExtra(LocationNotifyService.ACCELERATION_Y, 0);
accelerationZ = intent.getDoubleExtra(LocationNotifyService.ACCELERATION_Z, 0);
pace = intent.getFloatExtra(LocationNotifyService.ACCELERATION_PACE, 0);
pace = (float) (pace * 3.6);
time = intent.getLongExtra(LocationNotifyService.ACCELERATION_TIME, 0);
pace_list.add((double) pace);
SimpleDateFormat s = new SimpleDateFormat("yyyyMMddhhmmss");
String format = s.format(new Date());
temp += format + " | " + accelerationX + " | " + accelerationY + " | " + accelerationZ + " | " + Collections.max(pace_list) + "\n";
xyz.setText(temp);
}
}
}
的Manifest.xml
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar"
android:configChanges="orientation|screenSize">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<action android:name="com.client.gaitlink.CommunicationService.action.ACTIVITY_STATUS_UPDATE" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service
android:name=".LocationNotifyService"
android:exported="false"/>
</application>
答案 0 :(得分：0)
我猜你忘了在stopService（）
中添加以下行LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
将其添加到stopService -
中**// Missing @Override**
@Override
public boolean stopService(Intent name) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
return super.stopService(name);
}
修改MainActivity.java，如下所示 -
public class MainActivity extends AppCompatActivity {
Intent intent;
@Override
protected void onCreate(Bundle savedInstanceState) {
intent = new Intent(MainActivity.this,
LocationNotifyService.class);
start.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
...
startService(intent);
}
});
stop.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
stopService(intent);
}
});
} // end of class MainActivity
您需要对来自stop.setOnClickListener和start.setOnClickListener -
Intent intent = new Intent(MainActivity.this, LocationNotifyService.class);
*您必须使用相同的意图来启动服务以停止服务。