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How to send text from activity to fragment of other activity

I've two activity "Name_Status" and "Main_activity".
In Main_activity , i've fragments . i wanna send a string value from Name_Status activity to one of Main_activity fragment.
Below is the method of Name_Status activity:
#Override
public void onClick(View v) {
if (v.getId() == R.id.ok_change_name)
{
name = name_change.getText().toString();
System.out.println(name);
Log.d("entered", "entred");
MainActivity obj=new MainActivity();
Log.d("obj created", "obj created");
obj.changeMainName(name);
Log.d("obj.changename", "obj.changename");
}
}
By using this method i'm first sending data to the Main_activity and from there sending data to fragment as below.
Below is the code of Main_activity:
public void changeMainName(String s) {
FragActivity1 obj = (FragActivity1) getSupportFragmentManager().findFragmentById(R.id.person_profile); obj.changeName(s);
}
Now from here I'm sending string value to fragment class and there I'm only setting the string to the textview like below:
public void changeName(String s)
{
Log.d("changename entry" ,"changename netry");
System.out.println(s);
System.out.println(name_field.getText().toString());
name_field.setText(s);
System.out.println(name_field.getText());
}
I'm getting
NullPointerException at obj.changeMainName(name);

You gonna have to do some relay. For instance you have activity A which has no Fragment and Activity B which has a fragment. On Android framework you can first pass data to From Activity A to B and From Activity B you can pass data to its Fragment following the view Hierarchy.
In Activity A. do the following
Intent intent = new Intent(this, ActivityB.class);
intent.putExtra("key", "value");
startActivity(intent);
Now inside Activity B, get data from activity A
String stringValue= getIntent().getStringExtra("key");
Then pass that data your Fragment as an argument before to start Frag
Bundle bundle = new Bundle();
bundle.putString("key", stringValue);
ActivityBFrag fragment = new ActivityBFrag();
fragment.setArguments(bundle);
FragmentTransaction transaction = fragmentManager.beginTransaction();
transaction.replace(container, fragment, tag);
transaction.addToBackStack(tag);
transaction.commit();
Then inside your Fragment class. get data like below whenever you wanna access your data, can be inside onCreate, OnActivityCreated etc.
public void getArguments(){
Bundle bundle = getArguments();
if(bundle != null){
String stringValue = bundle.get("key");
}
}

Send data to second activity by Intent bundle. Then get the data in second activity by getIntent().getExtras() and then pass the data to fragment.

Sending an Intent changes the type of the Extra parameter

I have an activity from where I start a second activity like so:
public void onItemSelected(long id) {
// start the detail activity for the selected item ID.
Intent detailIntent = new Intent(this, FeedDetailActivity.class);
detailIntent.putExtra(FeedDetailFragment.ARG_ITEM_ID, id);
startActivityForResult(detailIntent, DETAIL_REQUEST_ID);
}
In the secondary activity I do this:
if (getArguments().containsKey(ARG_ITEM_ID))
{
long id = getArguments().getLong(ARG_ITEM_ID);
[...]
}
But I get a class cast exception when that getLong is executed stating the parameter is a java.lang.Integer. I was running this in the debugger and noticed that the Intent is created with id of type Long, but it is received with id of type Integer with the value set to 0 (see screenshots).
The Intent as I create it
The intent as I receive it
What is going on?

You are passing Intent to FeedDetailActivity. But reading extras from the FeedDetailFragment which is inside the FeedDetailActivity I think so. So getting wrong value.
Try this approach
First of all read extras from onCreate method of FeedDetailActivity as we read read from an activity.
if(getIntent().hasExtras(ARG_ITEM_ID) {
id = getIntent().getLongExtra(ARG_ITEM_ID);
}
Create Fragment using beginTransaction().replace(/*YourContainer*/, FeedDetailFragment.getInstance(id))
Create a function in FeedDetailFragment as
public static FeedDetailFragment getInstance(long userId) {
FeedDetailFragment mFragment = new FeedDetailFragment();
Bundle mBundle = new Bundle();
mBundle.putLong(ARG_ITEM_ID, userId);
mFragment.setArguments(mBundle);
return mFragment;
}
Now you can read your ID from FeedDetailFragment
if (getArguments() != null && getArguments().containsKey(ARG_ITEM_ID)) {
ID= getArguments().getLong(ARG_ITEM_ID, -1);
}

How to fill a listview with an edit text?

i have to activities:
activity 1 with twoo edit text and
activity 2 with a list view.
Everytime i fill the forms in activity1 and press the button "send" i want that all i have wrote in the two edit texts go in one row of the list view of activity 2.
I have tried and it is the result but i don't know how i have to continue:
this is the code of activity1 when the button is pressed:
buttonSend.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.i(TAG, "Button Send Report Clicked......");
object=object.getText().toString();
description = editDescription.getText().toString();
getCoordinates();
Intent i=new Intent(FirstReporting.this, MyList.class);
i.putExtra("object", object);
i.putExtra("description", description);
startActivity(i);
}
});
this is the code of activity2:
arrayAdapterListReports arrayAdapter = new ArrayAdapterListReports(this, R.layout.item_list_reports, listReports);
listView=(ListView)findViewById(R.id.listView1);
listView.setAdapter(arrayAdapter);
and then?

In that other activity you can do this to get the values:
Bundle extras = getIntent().getExtras();
if (extras != null) {
String objStr = extras.getString("object");
String descStr = extras.getString("description");
// Do what you want with these now ...
}

Check out the Receiving Simple Data from Other Apps guide.
In your second Activity, you can retrieve the Intent used to start Activity2 using getIntent().
You can then use that Intent object to get your data like so:
Intent i = getIntent();
Bundle extras = i.getExtras();
String obj = extras.getString("object");
String desc = extras.getString("description");

Why does the Intent that starts my activity not contain the extras data I put in the Intent I sent to startActivity()?

I explained this badly originally. This is my question: The Intent I send to the startActivity() method, contains a private field, mMap, which is a Map containing the strings I sent to putExtra(). When the target activity starts, a call to getIntent() returns an Intent that does not contain those values. The mMap field is null. Obviously, something in the bowels of the View hierarchy or the part of the OS that started the new activity created a new Intent to pass to it, since the object IDs are different.
But why? And why are the putData() values not carried fowrard to the new Intent?
The activity that starts the new activity extends Activity. Here's the startup code:
public boolean onOptionsItemSelected(final MenuItem item) {
switch (item.getItemId()) {
case 4:
i = new Intent(this, StatList.class);
i.putExtra("Name1", "Test1");
i.putExtra("Name3", "Test2");
startActivity(i);
}
}
I've tried the key values with and without the (recommended) complete package name prefix.
In the Eclipse debugger, I have verified the values for the player names are being inserted into i.mExtras.mMap properly.
Here's the code from the startee:
public class StatList extends ListActivity {
private final StatsListAdapter statsAdapter;
public StatList() {
statsAdapter = StatsListAdapter.getInstance(this);
} // default ctor
#Override
public void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
final Intent i = getIntent();
final Bundle extras = i.getExtras();
< more code here >
}
When execution gets to this method, mIntent.mExtras.mMap is null, and mIntent.mExtras.mParcelledData now contains some values that don't look sensible (it was null when startActivity() was called). getIntent() returns mIntent.
I've also tried startActivityForResult(), with the same result.
From the docs and the samples I've seen online & in the sample apps, this should be easy. I've found another way to meet my immediate need, but I'd like to know if anyone can help me understand why something this simple doesn't work.

In your main Activity:
i = new Intent(this, StatList.class);
i.putExtra("Name1", "Test1");
i.putExtra("Name3", "Test2");
startActivity(i);
Then in StatList.class
Bundle extras = getIntent().getExtras();
String name1 = extras.getString("Name1");
String name3 = extras.getString("Name3");
Log.i("StatList", "Name1 = " + name1 + " && Name3 = " + name3)

Update the following two line
final Intent i = getIntent();
final Bundle extras = i.getExtras();
Replace it with
Bundle extras = getIntent().getExtras();
if(extras!= null){
String var1= extras.getString("Name1");
String var2= extras.getString("Name2");
}

getIntent.getExtras() does not return null but has no values.

Question is simple, I am not exactly new to Android but I cannot, for the life of me, retrieve the extras passed via an intent from Activity A to Activity B.
See Activity A: This is actually a ListFragment, that implements onListItemClick() to start another activity via an intent.
#Override
public void onListItemClick(ListView l, View v, int position, long id) {
Log.i("FragmentList", "Item clicked: " + id);
Intent i = new Intent(getActivity(), ExpandedTweetView.class);
twitter4j.Status status = adapter.getItem(position);
Bundle extras = new Bundle();
extras.putString(KEY_TEXT, status.getText());
extras.putString(KEY_HANDLE, status.getUser().getScreenName());
extras.putString(KEY_NAME, status.getUser().getName());
extras.putString(KEY_TIMESTAMPS, status.getCreatedAt().toString());
extras.putLong(KEY_RETWEETS, status.getRetweetCount());
i.putExtra(KEY_EXTRAS, extras);
startActivity(i);
}
This part just works, I tested it usng Log.v(TAG, "status.getText()" to make sure that the error was not coming from the Adapter passing an empty item via getItem().
Here is the code on Activity B:
public class ExpandedTweetView extends Activity {
TextView text;
TextView name;
TextView handle;
TextView createdAt;
TextView retweets;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.expanded_list_item);
Bundle extras = getIntent().getExtras();
ActionBar actionBar = getActionBar();
actionBar.setHomeButtonEnabled(true);
actionBar.setDisplayHomeAsUpEnabled(true);
text = (TextView) findViewById(R.id.h_content);
name = (TextView) findViewById(R.id.h_name);
handle = (TextView) findViewById(R.id.h_handle);
createdAt = (TextView) findViewById(R.id.h_timestamp);
retweets = (TextView) findViewById(R.id.h_retweet_count);
if(extras != null) {
text.setText(extras.getString(TimelineFragment.KEY_TEXT));
name.setText(extras.getString(TimelineFragment.KEY_NAME));
handle.setText(extras.getString(TimelineFragment.KEY_HANDLE));
createdAt.setText(extras.getString(TimelineFragment.KEY_TIMESTAMPS));
retweets.setText(String.valueOf(extras.getLong(TimelineFragment.KEY_RETWEETS)));
}
}
As you can see, I believe I am using the right code to obtain the extras, using the same code on other applications worked. Not sure why, when the ExpandedTweetView is created via an intent, ALL of the textViews are empty. See: https://www.dropbox.com/s/pso6jbyn6rpks9n/empty_activity.png
What is even MORE strange is that I had initially tried checking to see if the bundle was null by calling this:
if (extras == null) {
Log.v(TAG, "Extras are empty :(");
}
But that line was never executed, meaning the bundle is not null. I also thought that maybe the keys being used to retrieve the individual Strings from the bundle were mismatching; however, in order to remedy that I decided to create constants that could be used on both sides. As you can see on the code, both the key to set the Extra and the Key to retrieve the Extra are the same.
Any ideas as to what the heck is going on?

Bundle extras = getIntent().getExtras();
if (extras != null) {
extras = extras.getBundle("KEY_EXTRAS");
String status = extras.getString("KEY_TEXT");
}

Try adding the extra variable to intent rather than in Bundle
Ex:
i.putExtra(KEY_1, a);
i.putExtra(KEY_2, b);
i.putExtra(KEY_3, c);
Then retrieve it from other activity from intent
Ex:
getIntent().getStringExtra(KEY_1) ;

In Activity A:
Intent i = new Intent(MainActivity.this, AnotherActivity.class);
Bundle b = new Bundle();
b.putString("thisc", "my name");
i.putExtra("bundle", b);
startActivity(i);
In Activity B:
**Bundle bun = getIntent().getBundleExtra("bundle");
if (bun.containsKey("thisc")) {
Log.i("TAG", bun.getString("thisc"));
} else {
Log.i("TAG", "no thisc");
}**
Check the first line of code in Activity B, that's the main difference actually!!

//put value
Intent inatent = new Intent(this,text.class);
inatent_logo.putExtra("message","hello");
startActivity(inatent);
//get vale
String msg = getIntent().getStringExtra("message").toString();

It's Difficult to maintain intent to Bundle and Bundle to Intent if number of data you want ti share from one Activity to Other Activity.
just Simply use Intent with PuExtra() with different argument.
you can pass number of data in intent like :
Sender's Side :
Create your Intent.
Intent My_Intent = new Intent(FromClass.this,ToClass.class);
Add your value which you want to share with other activity.
My_Intent.putExtra("VAR_A",a_value);
My_Intent.putExtra("VAR_B",b_value);
My_Intent.putExtra("VAR_C",c_value);
Call your Intent.
StartActivity(My_Intent);
Receiver's Side :
Intent My_Intent = getIntent();
First_Value=My_Intent.getStringExtra("VAR_A");
Sec_Value=My_Intent.getStringExtra("VAR_B");
Thred_Value=My_Intent.getStringExtra("VAR_C");
I Think its Easy for you to Handel your data from one Activity to other .