passing map coordinates to another activity in android studio

Question

I want to mark a location on a new map in a new activity. This is my code.

Ive sent my coordinates with putExtra

Intent intent = new Intent(this, RealMap.class);

Bundle args = new Bundle();
args.putDouble("latitude",honey.latitude);
args.putDouble("longitude",honey.longitude);

intent.putExtra("bundle",args);
startActivity(intent);

Intent i = new Intent(getApplicationContext(),ShowHoney.class);
startActivity(i);

And I received them like this

double lat = 0;
double lon = 0;

Bundle bundle = getIntent().getParcelableExtra("bundle");

if (bundle != null) {
    lat = bundle.getParcelable("latitude");
    lon = bundle.getParcelable("longitude");


    LatLng honey = new LatLng(lat, lon);
    BitmapDescriptor icon = BitmapDescriptorFactory.fromResource(R.mipmap.mylocation);
}

This isn't the full code I don't think there's a problem elsewhere. My code doesn't have problem compiling but when I try it on my phone it shuts down. It says the bundle is a null pointer. I don't know why it won't work.

Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.os.Parcelable android.os.Bundle.getParcelable(java.lang.String)' on a null object reference

So I tried putting in if(bundle!=null) The app works, but it doesn't do what I really want it to, because the bundle is always null

prashant17 · Answer 1 · 2018-07-31T06:34:09.013

1

Do like this:

Your PutExtra

Intent intent = new Intent(this, RealMap.class);

intent.putExtra("latitude",honey.latitude);
intent.putExtra("longitude",honey.longitude);

startActivity(intent);

Receive them like this

double lat=0;
double lon=0;

Bundle bundle = getIntent().getExtras();

if (bundle != null) {
    lat = bundle.getDouble("latitude");
    lon = bundle.getDouble("longitude");
}

edited Jul 31 '18 at 06:34

answered Jul 30 '18 at 07:17

prashant17

1,520
3
14
23

Sorry, My bad. Updated my answer – prashant17 Jul 31 '18 at 06:20

AbhayBohra · Answer 2 · 2018-07-31T05:46:15.347

1

Try this

if(getIntent().hasExtra("bundle")){

Bundle bundle = getIntent().getBundleExtra("bundle");
       if(bundle!=null){
         lat = bundle.getDouble("latitude");
         lon = bundle.getDouble("longitude");
    }
}

OR

Send it like this

Intent intent = new Intent(this,ShowHoney.class);
        intent.putExtra("latitude", honey.latitude);
        intent.putExtra("longitude", honey.longitude);
        startActivity(intent);

and recieve like this

if (getIntent().getExtras() != null) {
            Double lat = getIntent().getDoubleExtra("latitude", 0.0);
            Double lon = getIntent().getDoubleExtra("longitude", 0.0);
        }

edited Jul 31 '18 at 05:46

answered Jul 30 '18 at 07:21

AbhayBohra

2,047
24
36

I don't get it. I tried all of this but the bundle/ or the getIntent().getExtras() is always null!!! – 윤연경 Jul 31 '18 at 05:41
Try second method I forgot to give the required parameters in new Intent() – AbhayBohra Jul 31 '18 at 05:47
Try without using bundle – AbhayBohra Jul 31 '18 at 05:48
I tried it without bundle but it's still null could what could i have done wrong?? – 윤연경 Jul 31 '18 at 06:42

Khemraj Sharma · Answer 3 · 2018-07-31T06:35:50.190

You are passing Double value and using getParcelable() at receiver activity. That is wrong. You should get Double value by using getDoubleExtra().

    double lat = 0;
    double lon = 0;
    lat = getIntent().getDoubleExtra("latitude",0); // default value 0, if 'latitude' is not passed.
    lon = getIntent().getDoubleExtra("longitude",0);
    LatLng honey = new LatLng(lat, lon);

or by using Bundle

double lat=0;
double lon=0;

Bundle bundle = getIntent().getBundleExtra("bundle");

if (bundle != null) {
    lat = bundle.getDouble("latitude",0);
    lon = bundle.getDouble("longitude",0);
}

This will resolve your problem.

Suggestion:

(1) Also Activity has default putExtra() method so you don't need to use Bundle object. Just use below code.

    Intent intent = new Intent(this, RealMap.class);
    intent.putExtra("latitude", honey.latitude);
    intent.putExtra("longitude", honey.longitude);
    startActivity(intent);

(2) Create constant string keys for putExtra() and getExtra().

why did you add Intent i = new Intent(getApplicationContext(), ShowHoney.class); at the bottom?? — 윤연경, Jul 31 '18 at 05:28
It was copy mistake from your question, thanks, edited answer! — Khemraj Sharma, Jul 31 '18 at 05:30
I did not use editor make this answer, So it was another typo mistake. Use getBundleExtra(), edited answer. Thanks. — Khemraj Sharma, Jul 31 '18 at 06:36

score 0 · Answer 4 · answered Jul 30 '18 at 07:19

0

Bundle b= getIntent().getExtras();

get bundle using this code and check if it is null or not.

answered Jul 30 '18 at 07:19

MIkka Marmik

1,101
11
29

It's still null – 윤연경 Jul 31 '18 at 05:53
Have you check Location Object? – MIkka Marmik Jul 31 '18 at 05:58
refer this [https://stackoverflow.com/questions/15445182/passing-data-from-one-activity-to-another-using-bundle-not-displaying-in-secon] – MIkka Marmik Jul 31 '18 at 06:00

passing map coordinates to another activity in android studio

4 Answers4