I want to pass the value of the position in one activity class to another...
My code is as follows:
protected void onListItemClick(ListView listView, View v, int position,
long id) {
switch (position) {
case 1:
Intent newActivity1 = new Intent(this, BucketItemActivity.class);
newActivity1.putExtra("bucketno", position);
startActivity(newActivity1);
break;
case 2:
Intent newActivity2 = new Intent(this, BucketItemActivity.class);
newActivity2.putExtra("bucketno", position);
startActivity(newActivity2);
break;
}
}
The activity class that will receive it..
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_bucket_item);
String value = getIntent().getExtras().getString("bucketno");
TextView textView = new TextView(this);
textView.setTextSize(40);
textView.setText(value);
setContentView(textView);
}
But i always get a null in the String value...
Please help.
Replace this,
String value = getIntent().getExtras().getString("bucketno");
with
int value = getIntent().getExtras().getInt("bucketno");
You are trying to pass int value but retrieving String Data. That's why you are getting the nullpointerException.
You can use :
In first activity ( MainActivity page )
Intent i = new Intent(MainActivity.this,SecondActivity.class);
i.putExtra("YourValueKey", yourData.getText().toString());
then you can get it from your second activity by :
In second activity ( SecondActivity page )
Intent intent = getIntent();
String YourtransferredData = intent.getExtras().getString("YourValueKey");
String value = Integer.toString(getIntent().getExtras().getInt("bucketno"));
Bundle extras = getIntent().getExtras();
if (extras != null) {
String data = intent.getExtras().getString("key").toString();
}
From the First Activity
Intent i=new Intent(getApplicationContext(),BookPractionerAppoinment.class);
i.putExtra("prac","test");
startActivity(i);
Getting values in Second ACT Activity
String prac=getIntent().getStringExtra("prac);
For Serialized objects:
Passing
Intent i=new Intent(getApplicationContext(),BookPractionerAppoinment.class);
i.putExtra("prac",pract);
startActivity(i);
Getting
pract= (Payload) getIntent().getSerializableExtra("prac");
Use:
String value = getIntent().getExtras().get("key").toString();
getIntent().getExtras() will give you Boundle. get() method can be used to fetch the values.
In addition who has different sittuation
double userDMH = Util.getInstance(TakeInfoOne.this).calculateBMH(userGender, kg, talll, currentAge, activityy);
Intent intentTogeneral = new Intent(TakeInfoOne.this, TakeInfoTwo.class);
intentTogeneral.putExtra("user_current_age",userDMH );
startActivity(intentTogeneral);
If you put other primitives like double , boolean , int just dont forget to type correct format while geting the value in secont Activity
Bundle extras = getIntent().getExtras();
if (extras != null) {
double value = extras.getDouble("user_current_age");
txt_metabolism.setText(""+value);
}
Here with extras.getDouble() type your concerned value type like
extras.getInt("user_current_age");
extras.getBoolean("user_current_age");
extras.getString("user_current_age");
Related
how can i pass different value from different intent inside another activity. i.e
Activity A:
ButtonA .onclick{
intent.putExtra("name", screenname);
intent.putExtra("email", description);
intent.putExtra("pic", twitterImage);
startActivity(intent);
}
ButtonB. onClick{
intent.putExtra("anothervalue", json_object.toString())
}
Activity B:
Intent intent = getIntent();
String getValue = intent.getStringExtra("value from any of the button clicked")
While David Rauca answer is essentially correct, you will likely face NullPointerException.
getIntent().getStringExtra("firstvalue") will cause NPE if there is no value with name 'firstvalue'.
You should check whether or not value exist like this.
if(getIntent().hasExtra("firstvalue")) {
String firstvalue = getIntent().getStringExtra("firstvalue");
}
#Mandeep answer is correct. But if you have more values coming from activity then here is the solution. Thanks to Mandeep
Intent i = getIntent();
String getValue1,getValue2,getValue3;
if(i.hasExtra("AFirstValue") && i.hasExtra("ASecondValue") && i.hasExtra("AThirdValue")){
getValue1 = i.getStringExtra("AFirstvalue");
getValue2 = i.getStringExtra("ASecondValue");
getValue3 = i.getStringExtra("AThirdValue");
}
if(i.hasExtra("anotherFirstvalue") && i.hasExtra("anotherSecondvalue") && i.hasExtra("anotherThirdvalue")){
getValue1 = i.getStringExtra("anotherFirstvalue");
getValue2 = i.getStringExtra("anotherSecondvalue");
getValue3 = i.getStringExtra("anotherThirdvalue");
}
String getValue = intent.getStringExtra("firstvalue") // in order to get the first value that was set when user clicked on buttonA
or
String getValue = intent.getStringExtra("anothervalue") // in order to get the the value that was set when user clicked on buttonB
Activity B code should be like this
Intent intent = getIntent();
String firstvalue = intent.getStringExtra("firstvalue");
String anothervalue = intent.getStringExtra("anothervalue");
if(firstvalue != null)
// called from Button A click
else if(secondvalue != null)
// called from Button B click
Intent intent = getIntent();
String getValue = null;
if(intent.hasExtra("firstvalue")){
getValue = intent.getStringExtra("firstvalue");
}
if(intent.hasExtra("anothervalue")){
getValue = intent.getStringExtra("anothervalue");
}
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);
}
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");
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");
}
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 .