How can I send data from one activity (intent) to another?
I use this code to send data:
Intent i=new Intent(context,SendMessage.class);
i.putExtra("id", user.getUserAccountId()+"");
i.putExtra("name", user.getUserFullName());
context.startActivity(i);
Solved
First, get the intent which has started your activity using the getIntent() method:
Intent intent = getIntent();
If your extra data is represented as strings, then you can use intent.getStringExtra(String name) method. In your case:
String id = intent.getStringExtra("id");
String name = intent.getStringExtra("name");
In the receiving activity
Bundle extras = getIntent().getExtras();
String userName;
if (extras != null) {
userName = extras.getString("name");
// and get whatever type user account id is
}
// How to send value using intent from one class to another class
// class A(which will send data)
Intent theIntent = new Intent(this, B.class);
theIntent.putExtra("name", john);
startActivity(theIntent);
// How to get these values in another class
// Class B
Intent i= getIntent();
i.getStringExtra("name");
// if you log here i than you will get the value of i i.e. john
Add-up
Set Data
String value = "Hello World!";
Intent intent = new Intent(getApplicationContext(), NewActivity.class);
intent.putExtra("sample_name", value);
startActivity(intent);
Get Data
String value;
Bundle bundle = getIntent().getExtras();
if (bundle != null) {
value = bundle.getString("sample_name");
}
Instead of initializing another new Intent to receive the data, just do this:
String id = getIntent().getStringExtra("id");
If used in a FragmentActivity, try this:
The first page extends FragmentActivity
Intent Tabdetail = new Intent(getApplicationContext(), ReceivePage.class);
Tabdetail.putExtra("Marker", marker.getTitle().toString());
startActivity(Tabdetail);
In the fragment, you just need to call getActivity() first,
The second page extends Fragment:
String receive = getActivity().getIntent().getExtras().getString("name");
If you are trying to get extra data in fragments then you can try using :
Place data using:
Bundle args = new Bundle();
args.putInt(DummySectionFragment.ARG_SECTION_NUMBER);
Get data using:
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
getArguments().getInt(ARG_SECTION_NUMBER);
getArguments().getString(ARG_SECTION_STRING);
getArguments().getBoolean(ARG_SECTION_BOOL);
getArguments().getChar(ARG_SECTION_CHAR);
getArguments().getByte(ARG_SECTION_DATA);
}
Just a suggestion:
Instead of using "id" or "name" in your i.putExtra("id".....), I would suggest, when it makes sense, using the current standard fields that can be used with putExtra(), i.e. Intent.EXTRA_something.
A full list can be found at Intent (Android Developers).
We can do it by simple means:
In FirstActivity:
Intent intent = new Intent(FirstActivity.this, SecondActivity.class);
intent.putExtra("uid", uid.toString());
intent.putExtra("pwd", pwd.toString());
startActivity(intent);
In SecondActivity:
try {
Intent intent = getIntent();
String uid = intent.getStringExtra("uid");
String pwd = intent.getStringExtra("pwd");
} catch (Exception e) {
e.printStackTrace();
Log.e("getStringExtra_EX", e + "");
}
You can also do like this
// put value in intent
Intent in = new Intent(MainActivity.this, Booked.class);
in.putExtra("filter", "Booked");
startActivity(in);
// get value from intent
Intent intent = getIntent();
Bundle bundle = intent.getExtras();
String filter = bundle.getString("filter");
Getting Different Types of Extra from Intent
To access data from Intent you should know two things.
- KEY
- DataType of your data.
There are different methods in Intent class to extract different kind of data types. It looks like this
getIntent().XXXX(KEY) or intent.XXX(KEY);
So if you know the datatype of your varibale which you set in otherActivity you can use the respective method.
Example to retrieve String in your Activity from Intent
String profileName = getIntent().getStringExtra("SomeKey");
List of different variants of methods for different dataType
You can see the list of available methods in Official Documentation of Intent.
This is for adapter , for activity you just need to change mContext to your Activty name and for fragment you need to change mContext to getActivity()
public static ArrayList tags_array ;// static array list if you want to pass array data
public void sendDataBundle(){
tags_array = new ArrayList();
tags_array.add("hashtag");//few array data
tags_array.add("selling");
tags_array.add("cityname");
tags_array.add("more");
tags_array.add("mobile");
tags_array.add("android");
tags_array.add("dress");
Intent su = new Intent(mContext, ViewItemActivity.class);
Bundle bun1 = new Bundle();
bun1.putString("product_title","My Product Titile");
bun1.putString("product_description", "My Product Discription");
bun1.putString("category", "Product Category");
bun1.putStringArrayList("hashtag", tags_array);//to pass array list
su.putExtras(bun1);
mContext.startActivity(su);
}
You can get any type of extra datan from intent, no matter if it's an object or sting or anytype data.
Bundle extra = getIntent().getExtras();
if (extra != null){
String str1 = (String) extra.get("obj"); // get a object
String str2 = extra.getString("string"); //get a string
}
I just posted an answer here that covers this topic in a bit more detail, including some alternatives.
It utilises Vapor API, a new jQuery inspired Android framework I wrote to simplify Android dev. Check out the example in that answer for how you can easily pass data between activites.
Also it demonstrates VaporIntent, which lets you chain method calls and utilise the overloaded .put(...) method:
$.Intent().put("data", "myData").put("more", 568)...
You can easily pass data around your whole application using Vapor API, so hopefully it'll be helpful to you and others during app development.
