Develop Reference

Refresh Activity

This is my scenario
Activity A (List of user)
Activity B (User Add Activity)
Desired Flow in app
Step 1: A ==> B
Step 2: B ==> A
Step 3 (Required flow):
Activity A has to reload itself or call loadListView() function after Activity B exits or is closed.
onCreate(){
.......
....
btnAddClient.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent( ActivityA.this, ActivityB.class);
startActivity(intent);
}
});
loadListView();
......
....
}

Try to call loadListView() in onStart or onResume methods. It will refresh the list when you come back to your activity

Getting a result from an activity
From your Activity A, call the Activity B using the startActivityForResult() method.
int RESULT_CODE = 123;
Intent intent = new Intent(this, ActivityB.class);
startActivityForResult(intent, RESULT_CODE);
Now in your ActivityA class, write the following code for the onActivityResult() method.
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_CODE) {
if(resultCode == Activity.RESULT_OK){
bool status=data.getBooleanExtra("isUserAdded");
if(status)
{
loadListView();
}
}
}
} //onActivityResult
Return back to ActivityA with status.
Intent returnIntent = new Intent();
returnIntent.putExtra("isUserAdded",true);
setResult(Activity.RESULT_OK,returnIntent);
finish();

Start activity for result not work, between different activities

I have the main page where the photo is loaded, depending on what the array on the other page contains, in order to synchronize them I used StartActivityForResult();.
It will works like this: MainActivity has a photo, i press showMore button(open showMoreActivity), at showMoreActivity change text and after i finish showMoreActivity, MainActivity load the new photo depends on new text, but real it doesn`t change photo.
Can you help me? Where the mistake is?
buttonShowMore.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(getActivity(), ShowMore.class);
onStop();
getActivity().startActivityForResult(intent, 1);
}
});
onClick button ShowMore Listener
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (data == null) {return;}
String dataStringExtra =data.getStringExtra("name1");
Picasso.get().load( dataStringExtra + ".jpg").into(imageViewFirstOfCurrentList);
}
onActivityResult method
Intent intent = new Intent();
intent.putExtra("name1", List.get(0).toString());
setResult(RESULT_OK, intent);
finish();
when close showMore Activity

try removing call to onStop() in your onClick() method

Call method when intent closes

I am making a music player application, and I am trying to implement playlists. I have a file chooser in another intent, and I would like the ListView in the mainActivity to update when the file chooser intent closes. how can I call my UpdateListView method when it closes?
start intent:
Intent intent = new Intent(this, FileChooser.class);
startActivity(intent);
Closing intent
public void closeButton(View view){
finish();
}
Any help would be appreciated! thanks!

I assume you are using your own FileChoser class, not a standard Android one:
private static final int FileChooserRequestCode = 666;
Intent intent = new Intent(this, FileChooser.class);
startActivityForResult(intent, FileChooserRequestCode);
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == FillChooserRequestCode) {
if (resultCode == Activity.RESULT_OK) {
// ... file is chosen
String fileName = data.getStringExtra("FileName");
} else {
... dialog is closed
}
}
}
in FileChoser you do
Intent intent = new Intent();
intent.putStringExtra("FileName", fileName);
SetResult(Activity.RESULT_OK, intent);
finish();
and
SetResult(Activity.RESULT_CANCELED);
finish();

You can use startActivityForResult() please refer the link Getting Results From Activity
static final int FILE_CHOOSER_INTENT = 1; // The request code
...
private void chooseFile() {
Intent intent = new Intent(this, FileChooser.class);
startActivityForResult(intent, FILE_CHOOSER_INTENT);
}
Call setResult pass your result data as Intent. for details refer link SetResult function
Override this in your calling activity
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// Check which request we're responding to
if (requestCode == FILE_CHOOSER_INTENT) {
// Make sure the request was successful
if (resultCode == RESULT_OK) {
// The user picked a contact.
// The Intent's data Uri identifies which contact was selected.
// Do something with the contact here (bigger example below)
}
}
}

How can I close all the activities in Android?

I have two activities:
First activity: MainActivity.java
Intent intent = new Intent(MainActivity.this, ChildActivity.class);
.
.
.
startActivity(intent);
Second activity: ChildActivity.java
btnExit.setOnClickListener(new View.OnClickListener(){
public void onClick(View v)
{
//I wanna exit completely app in here, but i can't
System.exit(0);
}
});
I've tried a lot of way on StackOverFlow but it's not working. How can i solve my problem?

start child activity using
startActivityForResult(Intent intent, int requestCode);
For closing child activity use setResult(RESULT_OK); finish(); in your child activity.
And when it is returned, use finish(); for the same requestCode in your parent activity:
#Override
onActivityResult(int requestCode, int resultCode, Intent intent){
if( requestCode == <yourRequestCode> && resultCode == RESULT_OK)
finish();
}

Android Getting Results from another activity

I have a problem with my code. I want to pass a String from the SecondActivity to FirstActvity. Note that the FirstActivity is not visible but its still open. when the SecondActivity is finish it passes a String to the FirstActivity.
My problem here is that when the SecondActivity ended and goes to FirstActivity, the whole application closes.
FirstActivity to SecondActivity:
Intent intent = new Intent(MainActivity.this, FileChooser.class);
startActivityForResult(intent, 0);
SecondActivity to FirstActivity:
Intent intent = new Intent(this, MainActivity.class);
intent.putExtra("filePath", "/sdcard/path1");
setResult(0);
finish();
FirstActivity Result:
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
//TODO handle here.
Intent intent = getIntent();
this.filePath = intent.getExtras().getString("filePath");
}
What is wrong with the code?

When you set the result of your SecondActivity, you only set the result code. Instead of setResult(0) use setResult(0,intent)
Also, in your FirstActivity's onActivityResult get the extra from the data argument - this.filePath = data.getExtras().getString("filePath");

Try to use
data.getExtras().getString("filePath");
instead of
intent.getExtras().getString("filePath");`

Try with Bundle:
First Activity;
public void onClick(View v) {
Intent intent = new Intent(v.getContext(), FIRSTACTIVITY.class);
Bundle bundle = new Bundle();
bundle.putString("filePath","/sdcard/path1");
intent.putExtras(bundle);
startActivity(intent);
}
Second Activity:
public void activity_value() {
Intent i = getIntent();
Bundle extras=i.getExtras();
if(extras !=null) {
value = extras.getString("filePath");
}
}

try this
example.It solves your problem.