Develop Reference

StartActivityForResult go back

I am using StartActivityForResult for multiple activities. My main activity is where I initialize it. On my second activity I input some values and pass to a third activity. Now, When i'm on the third activity I want to be able to go back to the second activity if ever I want to edit the values i passed. What should I do?
MainAct.java
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_CODE)
{
if (resultCode == Activity.RESULT_OK)
{
//Something
}
}
SecondAct.java
Intent vd2 = new Intent(ViolatorDetails1.this,ViolatorDetails2.class);
vd2.putExtra("name",name);
vd2.putExtra("lname",lname);
vd2.putExtra("lnumber",lnumber);
vd2.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
vd2.addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT);
startActivity(vd2);
finish();
ThirdAct.java
Intent intent = new Intent();
intent.putExtra("firstname",name);
intent.putExtra("lastname", lname);
intent.putExtra("licensenumber", lnumber);
setResult(Activity.RESULT_OK, intent);
finish();
How can I go back to second Activity from third activity to edit some values if ever?

You should not call finish() on second activity when starting the third one.
Then onActivityResult() will be call when third activity is finished.
Call
startActivityForResult(vd2);
instead of
startActivity(vd2);

simply remove finish();
Intent vd2 = new Intent(ViolatorDetails1.this,ViolatorDetails2.class);
vd2.putExtra("name",name);
vd2.putExtra("lname",lname);
vd2.putExtra("lnumber",lnumber);
vd2.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
vd2.addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT);
startActivity(vd2);
finish(); //remove this line
in this way when your third activity closes user will go back to 2nd one, also you should implement onActivityResult in your 2nd activity so you can handle weather user wants to edit or has finished and should go back to 1st activity! (i.e. setting the result of the intent came from 1st activity and finish the 2nd one!)
here is what I mean in code:
In your 2nd activity do this,
#override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_CODE)
{
if (resultCode == Activity.RESULT_OK)
{
// user should have done his job on 3rd activity and we should finish the 2nd activity to go back to first activity!
}else{
//user still editing!
}
}
and instead of startActivity(vd2); do startActivityForResult(vd2);

onActivityResult in Fragment can't access UI elements

I have a button in Fragment when I press it I open a new activity for result but When I return back to my fragment I found all UI element = null
Please find the code
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(getActivity(), MyActivity.class);
getActivity().startActivityForResult(intent, "3030");
}
});
when choose a value from activity I should back to fragment and set data to textview in the activity.
Intent intent = Activity.this.getIntent();
intent.putExtra("categoryId", id);
intent.putExtra("categoryName", name);
setResult(RESULT_OK, intent);
finish();
and I have put that in the activity that contains the fragment
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 3030 && resultCode == RESULT_OK) {
Fragment fragment = mTabFragments.get(MyFragment.class.getName());
if (fragment != null) {
fragment.onActivityResult(requestCode, resultCode, data);
}
}
}
and in fragment
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 3030 && resultCode == Activity.RESULT_OK) {
int categoryId = data.getIntExtra("categoryId", 0);
String categoryName = data.getStringExtra("categoryName");
mChooseCategoryTextView.setText(categoryName);
}
}
the problem now that mChooseCategoryTextView is null
Can anyone tell me what is the problem?

To get result in fragment
startActivityForResult(intent,REQ_CODE);
not
getActivity().startActivityForResult(intent,REQ_CODE);

I think the question how you initialise this view?
Since your lunching another activity so your whole fragment my be reconstruct or only onViewCreated recalled again.
So my guess is that you don't reinitialize or override mChooseCategoryTextView reference in one of fragment callbacks.
Try to add more logs and check what's happening for this reference

I believe the error is in the line
Fragment fragment = mTabFragments.get(MyFragment.class.getName());
I assume mTabFragments in an adapter of some sort? I'd have to look at it's code to be sure, but it sounds like it's not returning the right fragment. Make sure that the reference it's returning is the same as the fragment that is being shown on screen.

Custom RecyclerAdapter and startActivityForResult

I have a Fragment that contains a RecyclerView which uses a custom RecyclerAdapter. I have an onClickListener inside my custom RecyclerAdapter - when a position is clicked I want it to start startActivityForResult. So far this works in as such as when it is clicked it starts the Activity as desired. However when I press the back button to go to the Fragment containing the RecyclerView onActivityResult is never called. I have passed in a context to the custom RecyclerAdapter. Is this something that is possible? Or does the Activity/Fragment initiating startActivityForResult be the one that intercepts it? If not I will end up handling the onClick in the Fragment with a gesture detector or something similar, but before that I wanted to give this a fair crack! Note: I have included onActivityResult in the MainActivity which has the Fragment container so the Fragment does receive onActivityResult if startActivityForResult is initiated from the Fragment. My code:
RecyclerAdapter onClickListener:
#Override
public void onClick(View v) {
String titleId = titlesListDataArrayList.get(getLayoutPosition()).getTitle_id();
Intent intent = new Intent(context, CreateItemsActivity.class);
intent.putExtra("TITLE_ID", titleId);
((Activity) context).startActivityForResult(intent, Constants.NEW_ITEMS_REQUEST_CODE);
}
CreateItemsActivity.class - onBackPressed()
#Override
public void onBackPressed() {
Intent intent = new Intent();
setResult(Constants.NEW_ITEMS_REQUEST_CODE, intent);
finish();
}
MyListsFragment.class (contains RecyclerView)
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Log.e("CALLED", "OnActivity Result");
// if requestCode matches from CreateItemsActivity
if (requestCode == Constants.NEW_ITEMS_REQUEST_CODE) {
Log.e("REQUEST CODE", String.valueOf(requestCode));
populateRecyclerView();
}
}
Also I have this in the MainActivity:
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// included to allow fragment to receive onActivityResult
}

Your calling Activities onActivityResult will only be called when the second activity finishes and a setResult has been executed.
Since the user is hitting the back button the 2nd activity is finishing without setResult being called.
You'll need to override onBackPressed so you can execute your setResult code.
I see you have implemented this but I think the crux of the issue is that you need to return Activity.RESULT_OK not your request code.
#Override
public void onBackPressed() {
Intent intent = new Intent();
setResult(RESULT_OK, intent);
super.onBackPressed();
}
In this case you don't need to explicitly return your requestCode of Constants.NEW_ITEMS_REQUEST_CODE because Android will forward that automatically.

OK, so IF by any chance somebody else has this problem here is my
solution. I added this code into the MainActivity onActivityResult (note I have a frame container which is where all fragments are inflated):
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// get current fragment in container
Fragment fragment = getSupportFragmentManager().findFragmentById(R.id.frameContainer);
fragment.onActivityResult(requestCode, resultCode, data);
}
I believe this works as the MainActivity is top in the hierarchy and intercepts the onActivityResult, so basically I just point it where I want it to be used.

setResult does not work on #EActivity

I am trying to setResult on my "Register" Button, but nothing happens:
SignInActivity:
Start activity for result:
Intent intent = RegisterActivity_.intent(this).get();
this.startActivityForResult(intent, REQUEST_CODE_USER_REGISTER);
On Activity Result
#OnActivityResult(REQUEST_CODE_USER_REGISTER)
protected void onResult(int resultCode) {
if (resultCode == RESULT_OK)
DashboardActivity_.intent(this).start();
else if (resultCode == RESULT_CANCELED) {
this.showDialogAlert("Unexpected error", null);
}
RegisterActivity:
this.setResult(RESULT_OK);
I am using AndroidAnnotations and I'm not using the this.finish() method because it set the property android:noHistory="true" in all Activities on AndroidManifest.xml. I am also setting the parent of each activity there. Have tried to remove these settings and setResult continued without work. Has anyone experienced this?

I am using AndroidAnnotations and I'm not using the this.finish() method because it set the property android:noHistory="true"in all Activities on AndroidManifest.xml.
I think your issue is here. When you're using startActivityForRestult, the expected workflow is to launch a new activity, do some work and then close this activity to go back to the previous one with the result of the work. So, you can't use android:noHistory="true" here because it doesn't make any sense.
Also, if you look at Activity's source code, you'll see that result is propagated from the finish method.

Start Activity for Result. your code is Ok
Intent intent = RegisterActivity_.intent(this).get();
this.startActivityForResult(intent, REQUEST_CODE_USER_REGISTER);
Now Inside the Activity that you start for the result set the result status like below code.
setResult(resultCode); result status possible values are like RESULT_CANCELED,RESULT_OK.etc
Activity that starts the new activity for result must override the below method and this method work when the activity that started for result finish.
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
}

I think the method is..
onActivityResult(int requestCode, int resultCode, Intent data)
not onResult

Using multiple intents in same Activity

I am trying to use an intent to import a file form the device to my app. I am using Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
My question is... I know for the intent I need to have onActivityResult() method, but I already have one for another intent being used the the class, is there a way I can have two onActivityResult() methods for two intents.

onActivityResult(int requestCode, Result resultCode, Intent data)
use differnet requestCode for different intents

startActivityForResult(intent, requestCodeForIntentOne);
startActivityForResult(intent, requestCodeForIntentTwo);
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if(requestCode==requestForIntentOne)
{}
if(requestCode==requestForIntentTwo)
{}
}

when you call startActivityForResult(), you supply a requestCode. That will match the value of the same name you get in onActivityResult()
So you can do :
if (requestCode == requestCodeA) {
//handle case 1
} else if (requestCode == requestCodeB) {
//handle case 1
}