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How do I come back to the same activity after launching a new app without creating a new activity

I am trying to make payment using ATH Movil. So it needs to open the ATH Movil app and get the response from it either completed or cancel. After launching the ATH Movil app and getting the response, it is creating a new activity every time instead of coming back to the same activity which launched the app.
private static void execute(Context context, String json, long timeout) {
PackageInfo athmInfo;
int athmVersionCode = 0;
String athmBundleId = COM_EVERTEC_ATHMOVIL_ANDROID + buildType;
Intent intent = context.getPackageManager().getLaunchIntentForPackage(athmBundleId);
try {
athmInfo = context.getPackageManager().getPackageInfo(athmBundleId, 0);
athmVersionCode = athmInfo.versionCode;
} catch (PackageManager.NameNotFoundException e) {
logForDebug(e.getMessage());
}
if (intent == null || athmVersionCode <= ConstantUtil.ATH_MOVIL_REQUIRED_VERSION_CODE) {
intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse(ConstantUtil.ATH_MOVIL_MARKET_URL));
}
intent.putExtra((ConstantUtil.BUNDLE), context.getPackageName());
intent.putExtra(ConstantUtil.JSON_DATA_KEY, json);
intent.putExtra(ConstantUtil.PAYMENT_DURATION_TIME_KEY, timeout);
intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
// intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
// intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
context.startActivity(intent);
}
here is the manifest file:
<activity
android:name=".Activity1"
android:label=""
android:screenOrientation="portrait">
<intent-filter>
<action android:name="....ATHMSDK" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
Also Activity1 implements PaymentResponseListener and onResume of Activity1 I am calling
PaymentResponse.validatePaymentResponse(getIntent(), Activity1.this); // this function is from their sdk and is read only.
Now when Activity1 launches the ATH Movil app and get the response. It creating again creating Activity1 instead of coming back to the existing one. Can somebody help me? What is wrong with my code?

Add this to your Activity tag in AndroidManifesto:
android:launchMode="singleTop"
This assumes that you want to navigate back to the same Task that started the ATH Movil and the last item on the back stack was indeed Activity1. As long as these conditions hold true, then android OS will return you to the same instance of Activity1.
For more information on this, you can also refer to this.

Two apps communicating using Intent, passing data

I'm trying to solve an issue passing data between different apps using Intent.
The scenario is like this:
Main (App 1): User clicks Register
Main App launches Register activity (form) in Register (App 2)
User enters first name, last name etc, clicks Send Back
Register app returning values to Main app
Main app displays user's data
Note that Register activity is not the main activity in Register activity.
I would like to solve this without an additional class and without Broadcasting.
My code for Main App, user clicks Register method:
/* User clicks Register */
public void clickRegister(View view) {
Intent intent = new Intent(Intent.ACTION_SEND);
// Verify it resolves
PackageManager packageManager = getPackageManager();
List<ResolveInfo> activities = packageManager.queryIntentActivities(intent, 0);
boolean isIntentSafe = activities.size() > 0;
// Start an activity if it's safe
if (isIntentSafe) {
startActivity(intent);
}
}
Manifest file for Register activity in Register App:
<activity android:name="com.example.register.Register">
<intent-filter>
<action android:name="android.intent.action.SEND"/>
<category android:name="android.intent.category.DEFAULT"/>
<data android:mimeType="text/plain"/>
</intent-filter>
</activity>
Now, this is the code in Register activity, of click Send Back method:
/* User clicks Send Back in register activity */
public void clickSendBack(View view) {
// Create an Intent for Register class
// Intent myIntent = new Intent(this, MainActivity.class);
Intent myIntent = new Intent(Intent.ACTION_SEND);
final EditText firstNameInput = (EditText) findViewById(R.id.firstNameEditText);
final EditText secondNameInput = (EditText) findViewById(R.id.secondNameEditText);
String firstName = firstNameInput.getText().toString();
String secondName = secondNameInput.getText().toString();
myIntent.setAction(Intent.ACTION_SEND);
myIntent.putExtra("firstName",firstName);
myIntent.putExtra("secondName",secondName);
myIntent.setType("text/plain");
// Starts activity
startActivity(myIntent);
finish();
}
And here I'm stuck.
Would love to hear any clarification for this topic, and a example for a solution would also be great.
Thanks!

In the first app, add an intent-filter to receive data back from the second app, which is your Register application.
Now, do the same with your Register application, we need to do this so that we can invoke it from our first app.
The intent-filter is there to make sure that we can send data back. According to https://developer.android.com/guide/components/intents-filters:
To advertise which implicit intents your app can receive, declare one or more intent filters for each of your app components with an element in your manifest file.
From the first app, create an Intent that will bring you to the second app. If you don't want to open up the Android share sheet then I suggest you use a PackageManager that gets all the activities that can receive your data and then find in the list your second app and open it with setComponent() with your intent. (Check my code below)
On to our second app, do the same as you did in the first app but now you can add your extras or data like first name and second name.
Back to our first app, write code that will receive the incoming intent from our second app and there, done!
Refer to:
https://developer.android.com/training/sharing
for more information about sending/receiving data with intents.
Here's a sample code:
First Application's Main Activity
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Receive your data here from your Register app
Intent receivedIntent = getIntent();
String action = receivedIntent.getAction();
String type = receivedIntent.getType();
if (Intent.ACTION_SEND.equals(action) && type != null) {
if ("text/plain".equals(type)) {
handleReceivedData(receivedIntent);
}
}
}
private void handleReceivedData(Intent intent) {
String firstName = intent.getStringExtra("first_name");
String secondName = intent.getStringExtra("second_name");
if (firstName == null || secondName == null) {
Toast.makeText(this, "Cannot received data!", Toast.LENGTH_SHORT).show();
return;
}
// Do here what you want with firstName and secondName
// ...
Toast.makeText(this, "First name: " + firstName +
" Second name: " + secondName, Toast.LENGTH_SHORT).show();
}
public void open(View view) {
Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT,
"Here you can put a message for your 'register' application");
sendIntent.setType("text/plain");
PackageManager packageManager = getPackageManager();
List<ResolveInfo> activities = packageManager.queryIntentActivities(sendIntent,
PackageManager.MATCH_DEFAULT_ONLY);
////////////////// Get the other application package name //////////////////
// This is so the user cannot choose other apps to send your data
// In order words, this will send the data back to the other
// application without opening the Android Share sheet
ActivityInfo activityInfo = null;
for (ResolveInfo activity: activities) {
// Specify here the package name of your register application
if (activity.activityInfo.packageName.equals("com.example.registerapp")) {
activityInfo = activity.activityInfo;
break;
}
}
// If the other application is not found then activityInfo will be null
// So make sure you add the correct intent-filter there!
if (activityInfo != null) {
// This will open up your register application
ComponentName name = new ComponentName(activityInfo.applicationInfo.packageName,
activityInfo.name);
sendIntent.setComponent(name);
startActivity(sendIntent);
}
else {
Toast.makeText(this,
"Receiver app doesn't exist or not installed on this device!",
Toast.LENGTH_SHORT).show();
}
}
First Application's Manifest
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.SEND" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="text/plain" />
</intent-filter>
</activity>
Second Application's Receiver Activity (In this case, your Register app)
Note: as you want, this is NOT the main activity
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_receiver);
// This is NOT the main activity!
}
public void send(View view) {
// I just want to note that I am calling the receiving application: "other application"
EditText firstNameEditText = findViewById(R.id.firstNameEditText);
EditText secondNameEditText = findViewById(R.id.secondNameEditText);
String firstName = firstNameEditText.getText().toString().trim();
String secondName = secondNameEditText.getText().toString().trim();
// Check if any of the inputs are empty
if (firstName.isEmpty() || secondName.isEmpty()) {
Toast.makeText(this, "Text boxes cannot be empty!", Toast.LENGTH_SHORT).show();
return;
}
// Send data back to the other application
Intent sendBackIntent = new Intent();
sendBackIntent.setAction(Intent.ACTION_SEND);
sendBackIntent.putExtra("first_name", firstName);
sendBackIntent.putExtra("second_name", secondName);
sendBackIntent.setType("text/plain");
// Get all the available applications that can receive your data
// (in this case, first name and second name)
PackageManager packageManager = getPackageManager();
List<ResolveInfo> activities = packageManager.queryIntentActivities(sendBackIntent,
PackageManager.MATCH_DEFAULT_ONLY);
////////////////// Get the other application package name //////////////////
ActivityInfo activityInfo = null;
for (ResolveInfo activity: activities) {
// Specify here the package name of the other application
if (activity.activityInfo.packageName.equals("com.example.mainapp")) {
activityInfo = activity.activityInfo;
break;
}
}
if (activityInfo != null) {
// Same as before, this will open up the other application
ComponentName name = new ComponentName(activityInfo.applicationInfo.packageName,
activityInfo.name);
sendBackIntent.setComponent(name);
startActivity(sendBackIntent);
}
else {
Toast.makeText(this,
"Receiver app doesn't exist or not installed on this device!",
Toast.LENGTH_SHORT).show();
}
}
Second Application's Manifest
<activity android:name=".ReceiverActivity">
<intent-filter>
<action android:name="android.intent.action.SEND" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="text/plain" />
</intent-filter>
</activity>
Happy coding!
Edit: I added explanation to my answer.

Your RegisterActivity should look like so
RegisterActivity is parsing the user data to the MainActivity
/* User clicks Send Back in register activity */
public void clickSendBack(View view) {
// Create an Intent for Register class
final EditText firstNameInput =
findViewById(R.id.firstNameEditText);
final EditText secondNameInput =
findViewById(R.id.secondNameEditText);
String firstName = firstNameInput.getText().toString();
String secondName = secondNameInput.getText().toString();
Intent i = new Intent(RegisterActiivty.this, MainActivity.class);
i.putExtra("firstName", firstName);
i.putExtra("secondName", secondName);
startActivity(i);
}
#################################################################
Your MainActivity should look like so.
The MainActivity is responsible for receiving the data
This line of codes should be called in your onCreate method of MainActivity
String firstName = getIntent().getStringExtra("firstName");
String secondName = getIntent().getStringExtra("firstName")
// if you have a TextView on MainActivity you could display the data you have
//gotten from the RegisterActivity like so
Textview firstName = findViewById(R.id.firstName);
firstName.setText(firstName);
Textview secondName = findViewById(R.id.secondName);
secondName.setText(secondName);
/* User clicks Register */
public void clickRegister(View view) {
startActivity(Intent(this, RegisterActivity.class))
}
##########################################################
Your manifest should look like this
<activity android:name="com.example.register.Register"/>
I am trying to wrap my head around what you meant by Main App and Register.
It sound as though they are two different apps or probably two different
project modules. But if what you are trying to say is MainActivity and
RegisterActivity then the above solution should be able to fix your problem.
What you did wrong:
That intent you were trying to parse in the manifest was not needed. If I understood properly what you are trying to achieve. The same goes for the MainActivity and RegisterActivity. You were using Implicit Intent instead of explicit Intent. And when calling findViewById this extra (EditText) was not needed because it is redundant. For more on the intent you can check this
However, this guide should be useful to anyone seeking to parse data from one activity to another.

Button to return to Intent

I have the following sequence of pages:
-MainActivity
-Intent(Select a picture)
-DadosActivity
In MainActivity I have a button to open an intent for the user to select a photo, with the following code:
Intent i = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
if (i.resolveActivity(MainActivity.this.getPackageManager()) != null) {
startActivityForResult(i, SELECAO_GALERIA);
}
In this intent, the user will select a photo and after this is sent that selected item to another page, through this code:
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == MainActivity.this.RESULT_OK) {
Bitmap image = null;
try {
switch (requestCode) {
case SELECAO_CAMERA:
image = (Bitmap) data.getExtras().get("data");
break;
case SELECAO_GALERIA:
Uri localImagemSelecionada = data.getData();
image = MediaStore.Images.Media.getBitmap(MainActivity.this.getContentResolver(), localImagemSelecionada);
break;
}
if (image != null) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
image.compress(Bitmap.CompressFormat.JPEG, 70, baos);
byte[] dadosImagem = baos.toByteArray();
Intent i = new Intent(MainActivity.this, DadosPostagemActivity.class);
i.putExtra("fotoEscolhida", dadosImagem);
startActivity(i);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
In the last activity, DadosActivity, the user can make some changes in the image, but my problem is when pressing the button on the back of the device and / or the toolbar, with the following code:
toolbar = (Toolbar) findViewById(R.id.tb_dados);
toolbar.setTitle("Adicione uma descrição");
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
According to what I did on AndroidManifest
<activity
android:name=".activity.DadosPostagemActivity"
android:parentActivityName=".activity.MainActivity" />
Activity is returning to MainActivity, but I wanted to press it to return to the intent and to choose the image again.
Does anyone have any suggestions on how to do this, so that instead of returning to MainActivity, back to the intent so that he can choose the image again?

Use the Codes Below..
In Manifest.xml file change code of AddPhoto Activity and AddDescription Activity like this-
This is for Addphoto Activity
<activity android:name=".AddPhoto"
android:label="Add Photo"
android:parentActivityName=".MainActivity">
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value=".MainActivity" />
</activity>
This is for AddDescription Activity
<activity android:name=".AddDescription"
android:label="Add Description"
android:parentActivityName=".AddPhoto">
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value=".AddPhoto" />
</activity>
Now your problems are solved. In the code we declared that Addphoto activity is a child of Main Activity and AddDescription Activity is a child of Addphoto Acitivity.
Change the AddPhoto and AddDescription with your own activity name.
Best of Luck.

Thanks for everyone, I I found the solution was to just overwrite the method onBackPressed

Back to launcher screen after printing

I am programming an application inside Android studio. Now I want my application to never close and work as a cycle. I know I can do that with the Intent class and configure the Manifest.xml file for all the activities that are inside my application.
But to print I go outside of my application to get to a printpreview with the printsettings. At this moment - when the printing is finished - that preview will close and go back (automatically) to my last activity (the one that comes before the printpreview). Now instead of going to that previous activity, I want to go back to the startpage (category.LAUNCHER).
But that doesn't work with programming with the Intent class because there is no xml file of the printpreview. Because it is a method which creates a bitmapfile and goes outside of my application to print.
/**
* Method which creates a bitmap of the picture with the Odisee logo and
* goes to the printpreviewpage with settings.
*
*/
private void doPhotoPrint() {
try {
//Creates object from PrintHelper class
PrintHelper photoPrinter = new PrintHelper(this);
//Scales image
photoPrinter.setScaleMode(PrintHelper.SCALE_MODE_FILL);
// Find the last picture
String[] projection = new String[]{
MediaStore.Images.ImageColumns._ID,
MediaStore.Images.ImageColumns.DATA,
MediaStore.Images.ImageColumns.BUCKET_DISPLAY_NAME,
MediaStore.Images.ImageColumns.DATE_TAKEN,
MediaStore.Images.ImageColumns.MIME_TYPE};
final Cursor cursor = getApplicationContext().getContentResolver()
.query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection, null,
null, MediaStore.Images.ImageColumns.DATE_TAKEN + " DESC");
String imageLocation = null;
if (cursor.moveToFirst()) {
imageLocation = cursor.getString(1);
}
File imageFile = new File(imageLocation);
//Creates bitmapfile to print
if (imageFile.exists()) {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
//Gets the resources (last taken picture + Odisee logo)
Bitmap bitmap = BitmapFactory.decodeFile(imageLocation);
Bitmap bitmap2 = BitmapFactory.decodeResource(getResources(),R.drawable.logo_odisee2);
Bitmap bmOverlay = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), bitmap.getConfig());
//Draws the Odisee logo onto the picture
Canvas canvas = new Canvas(bmOverlay);
canvas.drawBitmap(bitmap, new Matrix(),null);
canvas.drawBitmap(bitmap2,950,550,null);
//Sets printer orientation to landscape
photoPrinter.setOrientation(PrintHelper.ORIENTATION_LANDSCAPE);
//Goes to screen to print the bitmap
photoPrinter.printBitmap("photobooth", bmOverlay);
}
}catch (Exception e) {
System.err.println("Fout!");
}
}
If I create an Intent object it will either skip the printpreview part or crash after being printed. So I am wondering if there is another possible way to fix this issue and keep the application running?
<activity android:name=".startPagina">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

My soundboard app can't share .mp3 files

I'm new to Java and Android programming and I'm working on a soundboard app.
By the moment the app plays a sound when you click on a button, but I also want to add a sharing functionality for every sound (using OnLongClick), but I just can't make it work.
I've been looking for a solution through the Internet for the past two days but there's no way I can solve it.
I'm using shareIntent, and when the user long clicks the button it will display a list of apps you can share the sound (dropbox, bluetooth, whatsapp...).
If I select dropbox, it just uploads a file with no extension, and sharing with Whatsapp won't work and will display this error: "Failed to send, please try again".
My code looks like this:
final int[] buttonIds = { R.id.sound01, R.id.sound02, R.id.sound03,
R.id.sound04, R.id.sound05, R.id.sound06,
R.id.sound07, R.id.sound08, R.id.sound09,
R.id.sound10, R.id.sound11, R.id.sound12 };
final int[] soundIds = { R.raw.sound01, R.raw.sound02, R.raw.sound03,
R.raw.sound04, R.raw.sound05, R.raw.sound06,
R.raw.sound07, R.raw.sound08, R.raw.sound09,
R.raw.sound10, R.raw.sound11, R.raw.sound12 };
View.OnLongClickListener listener2 = new View.OnLongClickListener()
{
#Override
public boolean onLongClick(View v)
{
for(int i = 0; i < buttonIds.length; i++)
{
if(v.getId() == buttonIds[i])
{
selectedSoundId = soundIds[i];
// Can't share audio. It shares it with no format, so whatsapp won't accept it
Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
shareIntent.setType("audio/mp3");
shareIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("android.resource://com.guillefix.zombie_soundboard/" + selectedSoundId));
startActivity(Intent.createChooser(shareIntent, "Send to:"));
break;
}
}
return false;
}
};

Declare Intent Filter in Manifest
<intent-filter>
<action android:name="android.intent.action.SEND" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="audio/*" />
</intent-filter>