如何创建一个IntentService来检查GoogleApiClient是否不为null

Question

In my project I'm using the "GoogleApiClient" to make locations requests each 5 seconds, the problem is, if I turn the GPS off and then reopen the App, it crushes because the mGoogleApiClient object is current null! I'm just doing a simple check on onRestart

protected void onRestart() {
    super.onRestart();
    if(mGoogleApiClient != null && mGoogleApiClient.isConnected()){
        startLocationUpdate();
    }
}

What I want is create something that I could call every time the object mGoogleApiClient is null so it could try in background until be fine to go on! Inside of startLocationUpdate(); I'm using this :

mlocationRequest = new LocationRequest();
    mlocationRequest.setInterval(5000);
    mlocationRequest.setFastestInterval(2000);
    mlocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    try{
        LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient,mlocationRequest,MainActivity.this);
    }catch (SecurityException ex){
        Toast.makeText(this, ex.toString(), Toast.LENGTH_SHORT).show();
    }

It could be something like :

if(mGoogleApiClient != null){
   LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient,mlocationRequest,MainActivity.this);
  }else {
   callServiceToTryConnection();
}

I already use IntentService with Geocoder to get the address!

Answer 1

Check in onRestart that is GPS is enable or not by this condition

if ( !manager.isProviderEnabled( LocationManager.GPS_PROVIDER ) ) {
   //Here is your condition if GPS is not connected
}

Answer 2

将处理程序置于连接挂起或连接失败的方法中，该方法尝试检查并重新连接（如果不为null）。