Develop Reference

Share text with WhatsApp on Android "Can't send empty message"

When I'm trying to share text using intent mechanism and pick WhatsApp, it says:
Can't send empty message
I've read an official docs about Android integration here: https://faq.whatsapp.com/en/android/28000012
My code:
public void shareText(String label, CharSequence title, CharSequence body) {
final Intent intent = new Intent(Intent.ACTION_SEND);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setType("text/plain");
intent.putExtra(Intent.EXTRA_SUBJECT, title.toString());
intent.putExtra(Intent.EXTRA_TEXT, TextUtils.concat(title, body));
final Intent chooser = Intent.createChooser(intent, label);
chooser.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
if (chooser.resolveActivity(mContext.getPackageManager()) != null) {
mContext.startActivity(chooser);
}
}
Am I doing something wrong? Or is it bug with WhatsApp messenger?
P.S. arguments title and body are not empty in my case.

What you have done is,
intent.putExtra(Intent.EXTRA_TEXT, TextUtils.concat(title, body));
while TextUtils.concat(title, body) returns CharSequence probably that whatsapp does not support.
You have to pass the value as a String leaving you two solutions.
You can convert the whole to a String by toString()
intent.putExtra(Intent.EXTRA_TEXT, TextUtils.concat(title, body).toString());
Converting it a String before passing it to intent.
String someValue = TextUtils.concat(title, body).toString();
and adding it here as,
intent.putExtra(Intent.EXTRA_TEXT, someValue);

Here You can send data from your app to Whatsapp and any other like a messenger
Intent share = new Intent(Intent.ACTION_SEND);
share.setType("text/plain");
share.putExtra(Intent.EXTRA_TEXT, " Your text ");
startActivity(Intent.createChooser(share, " Your text "));

Here sendEmtpyMassages is Button Just copy this method It's Work for you
sendEmtpyMassages.setOnClickListener {
val context: Context = applicationContext
val sendIntent = Intent("android.intent.action.MAIN")
sendIntent.action = Intent.ACTION_VIEW
sendIntent.setPackage("com.whatsapp")
val url = "https://api.whatsapp.com/send?phone=" + "&text=" + " "
sendIntent.data = Uri.parse(url)
if (sendIntent.resolveActivity(context.packageManager) != null) {
startActivity(sendIntent)
}
}

How to send message to particular whatsapp contact programmatically using intent? [duplicate]

This question already has answers here:
Send text to specific contact programmatically (whatsapp)
(29 answers)
Closed 6 years ago.
I searched various answers but all of them are outdated.
Whenever I tried using send to it only opens contact chooser.

Intent sendIntent = new Intent("android.intent.action.MAIN");
sendIntent.setComponent(new ComponentName("com.whatsapp","com.whatsapp.Conversation"));
sendIntent.putExtra("jid", PhoneNumberUtils.stripSeparators("YOUR_PHONE_NUMBER")+"#s.whatsapp.net");//phone number without "+" prefix
startActivity(sendIntent);
Update:
The aforementioned hack cannot be used to add any particular message, so here is the new approach. Pass the user mobile in international format here without any brackets, dashes or plus sign. Example: If the user is of India and his mobile number is 94xxxxxxxx , then international format will be 9194xxxxxxxx. Don't miss appending country code as a prefix in mobile number.
private fun sendMsg(mobile: String, msg: String){
try {
val packageManager = requireContext().packageManager
val i = Intent(Intent.ACTION_VIEW)
val url =
"https://wa.me/$mobile" + "?text=" + URLEncoder.encode(msg, "utf-8")
i.setPackage("com.whatsapp")
i.data = Uri.parse(url)
if (i.resolveActivity(packageManager) != null) {
requireContext().startActivity(i)
}
} catch (e: Exception) {
e.printStackTrace()
}
}
Note: This approach works only with contacts added in user's Whatsapp
account.

You have to set the package name in the Intent like this
intent.setPackage("com.whatsapp");
Full example:
Uri uri = Uri.parse("smsto:" + smsNumber);
Intent i = new Intent(Intent.ACTION_SENDTO, uri);
i.putExtra("sms_body", smsText);
i.setPackage("com.whatsapp");
startActivity(i);

You just fire the below intent on the click on button:
Uri mUri = Uri.parse("smsto:" + mobile1);
Intent mIntent = new Intent(Intent.ACTION_SENDTO, mUri);
mIntent.setPackage("com.whatsapp");
mIntent.putExtra("sms_body", "The text goes here");
mIntent.putExtra("chat", true);
startActivity(Intent.createChooser(mIntent, ""));
if number available on whatsapp then that particular user chat open and you send your message.If number not available on whatsapp the alert diaolge open in that case.
hope this help you ;-)

Here is solution
private void openWhatsApp(String number) {
String whatsAppMessage = "Hello!";
Uri uri = Uri.parse("smsto:" + number);
Intent i = new Intent(Intent.ACTION_SENDTO, uri);
i.setPackage("com.whatsapp");
startActivity(i);
}
Call above function and pass number, by which by want to open chat in Whatsapp messenger.
Hope it will work for you. :)

Sending message through WhatsApp

Since I found some older posts, that tell that whatsapp doesn't support this, I was wondering if something had changed and if there is a way to open a whatsapp 'chat' with a number that I'm sending through an intent?

UPDATE
Please refer to https://faq.whatsapp.com/en/android/26000030/?category=5245251
WhatsApp's Click to Chat feature allows you to begin a chat with
someone without having their phone number saved in your phone's
address book. As long as you know this person’s phone number, you can
create a link that will allow you to start a chat with them.
Use: https://wa.me/15551234567
Don't use: https://wa.me/+001-(555)1234567
Example: https://wa.me/15551234567?text=I'm%20interested%20in%20your%20car%20for%20sale
Original answer
Here is the solution
public void onClickWhatsApp(View view) {
PackageManager pm=getPackageManager();
try {
Intent waIntent = new Intent(Intent.ACTION_SEND);
waIntent.setType("text/plain");
String text = "YOUR TEXT HERE";
PackageInfo info=pm.getPackageInfo("com.whatsapp", PackageManager.GET_META_DATA);
//Check if package exists or not. If not then code
//in catch block will be called
waIntent.setPackage("com.whatsapp");
waIntent.putExtra(Intent.EXTRA_TEXT, text);
startActivity(Intent.createChooser(waIntent, "Share with"));
} catch (NameNotFoundException e) {
Toast.makeText(this, "WhatsApp not Installed", Toast.LENGTH_SHORT)
.show();
}
}
Also see http://www.whatsapp.com/faq/en/android/28000012

With this code you can open the whatsapp chat with the given number.
void openWhatsappContact(String number) {
Uri uri = Uri.parse("smsto:" + number);
Intent i = new Intent(Intent.ACTION_SENDTO, uri);
i.setPackage("com.whatsapp");
startActivity(Intent.createChooser(i, ""));
}

Simple solution, try this.
String phoneNumberWithCountryCode = "+62820000000";
String message = "Hallo";
startActivity(
new Intent(Intent.ACTION_VIEW,
Uri.parse(
String.format("https://api.whatsapp.com/send?phone=%s&text=%s", phoneNumberWithCountryCode, message)
)
)
);

I found the following solution, first you'll need the whatsapp id:
Matching with reports from some other threads here and in other forums the login name I found was some sort of:
international area code without the 0's or + in the beginning + phone number without the first 0 + #s.whatsapp.net
For example if you live in the Netherlands and having the phone number 0612325032 it would be 31612325023#s.whatsapp.net -> +31 for the Netherlands without the 0's or + and the phone number without the 0.
public void sendWhatsAppMessageTo(String whatsappid) {
Cursor c = getSherlockActivity().getContentResolver().query(ContactsContract.Data.CONTENT_URI,
new String[] { ContactsContract.Contacts.Data._ID }, ContactsContract.Data.DATA1 + "=?",
new String[] { whatsappid }, null);
c.moveToFirst();
Intent whatsapp = new Intent(Intent.ACTION_VIEW, Uri.parse("content://com.android.contacts/data/" + c.getString(0)));
c.close();
if (whatsapp != null) {
startActivity(whatsapp);
} else {
Toast.makeText(this, "WhatsApp not Installed", Toast.LENGTH_SHORT)
.show();
//download for example after dialog
Uri uri = Uri.parse("market://details?id=com.whatsapp");
Intent goToMarket = new Intent(Intent.ACTION_VIEW, uri);
}
}

This should work whether Whatsapp is installed or not.
boolean isWhatsappInstalled = whatsappInstalledOrNot("com.whatsapp");
if (isWhatsappInstalled) {
Uri uri = Uri.parse("smsto:" + "98*********7")
Intent sendIntent = new Intent(Intent.ACTION_SENDTO, uri);
sendIntent.putExtra(Intent.EXTRA_TEXT, "Hai Good Morning");
sendIntent.setPackage("com.whatsapp");
startActivity(sendIntent);
} else {
Toast.makeText(this, "WhatsApp not Installed", Toast.LENGTH_SHORT).show();
Uri uri = Uri.parse("market://details?id=com.whatsapp");
Intent goToMarket = new Intent(Intent.ACTION_VIEW, uri);
startActivity(goToMarket);
}
private boolean whatsappInstalledOrNot(String uri) {
PackageManager pm = getPackageManager();
boolean app_installed = false;
try {
pm.getPackageInfo(uri, PackageManager.GET_ACTIVITIES);
app_installed = true;
} catch (PackageManager.NameNotFoundException e) {
app_installed = false;
}
return app_installed;
}

Tested on Marshmallow S5 and it works!
Uri uri = Uri.parse("smsto:" + "phone number with country code");
Intent sendIntent = new Intent(Intent.ACTION_SENDTO, uri);
sendIntent.setPackage("com.whatsapp");
startActivity(sendIntent);
This will open a direct chat with a person, if whatsapp not installed this will throw exception, if phone number not known to whatsapp they will offer to send invite via sms or simple sms message

use this singleline code use to Sending message through WhatsApp
//NOTE : please use with country code first 2digits without plus signed
try {
String mobile = "911234567890";
String msg = "Its Working";
startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("https://api.whatsapp.com/send?phone=" + mobile + "&text=" + msg)));
}catch (Exception e){
//whatsapp app not install
}

Here is the latest way to send a message via Whatsapp, even if the receiver's phone number is not in your Whatsapp chat or phone's Contacts list.
private fun openWhatsApp(number: String) {
try {
packageManager.getPackageInfo("com.whatsapp", PackageManager.GET_ACTIVITIES)
val intent = Intent(
Intent.ACTION_VIEW,
Uri.parse("https://wa.me/$number?text=I'm%20interested%20in%20your%20car%20for%20sale")
)
intent.setPackage("com.whatsapp")
startActivity(intent)
} catch (e: PackageManager.NameNotFoundException) {
Toast.makeText(
this,
"Whatsapp app not installed in your phone",
Toast.LENGTH_SHORT
).show()
e.printStackTrace()
}
}
intent.setPackage("com.whatsapp") will help you to avoid Open With chooser and open Whatsapp directly.
Importent Note: If You are ending in catch statement, even if Whatsapp is installed. Please add queries to manifest.xml as follows:
<queries>
<package android:name="com.whatsapp" />
</queries>
Please see this answer for more details.

To check if WhatsApp is installed in device and initiate "click to chat" in WhatsApp:
Kotlin:
try {
// Check if whatsapp is installed
context?.packageManager?.getPackageInfo("com.whatsapp", PackageManager.GET_META_DATA)
val intent = Intent(Intent.ACTION_VIEW, Uri.parse("https://wa.me/$internationalPhoneNumber"))
startActivity(intent)
} catch (e: NameNotFoundException) {
Toast.makeText(context, "WhatsApp not Installed", Toast.LENGTH_SHORT).show()
}
Java:
try {
// Check if whatsapp is installed
getPackageManager().getPackageInfo("com.whatsapp", PackageManager.GET_META_DATA);
Intent intent = Intent(Intent.ACTION_VIEW, Uri.parse("https://wa.me/" + internationalPhoneNumber));
startActivity(intent);
} catch (NameNotFoundException e) {
Toast.makeText(context, "WhatsApp not Installed", Toast.LENGTH_SHORT).show();
}
getPackageInfo() throws NameNotFoundException if WhatsApp is not installed.
The internationalPhoneNumber variable is used to access the phone number.
Reference:
https://faq.whatsapp.com/general/chats/how-to-use-click-to-chat?category=5245251
https://stackoverflow.com/a/2201999/9636037
https://stackoverflow.com/a/15931345/9636037

The following code is used by Google Now App and will NOT work for any other application.
I'm writing this post because it makes me angry, that WhatsApp does not allow any other developers to send messages directly except for Google.
And I want other freelance-developers to know, that this kind of cooperation is going on, while Google keeps talking about "open for anybody" and WhatsApp says they don't want to provide any access to developers.
Recently WhatsApp has added an Intent specially for Google Now, which should look like following:
Intent intent = new Intent("com.google.android.voicesearch.SEND_MESSAGE_TO_CONTACTS");
intent.setPackage("com.whatsapp");
intent.setComponent(new ComponentName("com.whatsapp", "com.whatsapp.VoiceMessagingActivity"));
intent.putExtra("com.google.android.voicesearch.extra.RECIPIENT_CONTACT_CHAT_ID", number);
intent.putExtra("android.intent.extra.TEXT", text);
intent.putExtra("search_action_token", ?????);
I could also find out that "search_action_token" is a PendingIntent
that contains an IBinder-Object, which is sent back to Google App and checked, if it was created by Google Now.
Otherwise WhatsApp will not accept the message.

Currently, the only official API that you may make a GET request to:
https://api.whatsapp.com/send?phone=919773207706&text=Hello
Anyways, there is a secret API program already being ran by WhatsApp

As the documentation says you can just use an URL like:
https://wa.me/15551234567
Where the last segment is the number in in E164 Format
Uri uri = Uri.parse("https://wa.me/15551234567");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);

This is what worked for me :
Uri uri = Uri.parse("https://api.whatsapp.com/send?phone=" + "<number>" + "&text=" + "Hello WhatsApp!!");
Intent sendIntent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(sendIntent);

This works to me:
PackageManager pm = context.getPackageManager();
try {
pm.getPackageInfo("com.whatsapp", PackageManager.GET_ACTIVITIES);
Intent intent = new Intent();
intent.setComponent(new ComponentName(packageName,
ri.activityInfo.name));
intent.setType("text/plain");
intent.putExtra(Intent.EXTRA_TEXT, element);
} catch (NameNotFoundException e) {
ToastHelper.MakeShortText("Whatsapp have not been installed.");
}

Use direct URL of whatsapp
String url = "https://api.whatsapp.com/send?phone="+number;
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(url));
startActivity(i);

You'll want to use a URL in the following format...
https://api.whatsapp.com/send?text=text
Then you can have it send whatever text you'd like. You also have the option to specify a phone number...
https://api.whatsapp.com/send?text=text&phone=1234
What you CANNOT DO is use the following:
https://wa.me/send?text=text
You will get...
We couldn't find the page you were looking for
wa.me, though, will work if you supply both a phone number and text. But, for the most part, if you're trying to make a sharing link, you really don't want to indicate the phone number, because you want the user to select someone. In that event, if you don't supply the number and use wa.me as URL, all of your sharing links will fail. Please use app.whatsapp.com.

this is much lengthy but surly working.
enjoy your code:)
//method used to show IMs
private void show_custom_chooser(String value) {
List<ResolveInfo> list = null;
final Intent email = new Intent(Intent.ACTION_SEND);
email.setData(Uri.parse("sms:"));
email.putExtra(Intent.EXTRA_TEXT, "" + value);
email.setType("text/plain"); // vnd.android-dir/mms-sms
WindowManager.LayoutParams WMLP = dialogCustomChooser.getWindow()
.getAttributes();
WMLP.gravity = Gravity.CENTER;
dialogCustomChooser.getWindow().setAttributes(WMLP);
dialogCustomChooser.getWindow().setBackgroundDrawable(
new ColorDrawable(android.graphics.Color.TRANSPARENT));
dialogCustomChooser.setCanceledOnTouchOutside(true);
dialogCustomChooser.setContentView(R.layout.about_dialog);
dialogCustomChooser.setCancelable(true);
ListView lvOfIms = (ListView) dialogCustomChooser
.findViewById(R.id.listView1);
PackageManager pm = getPackageManager();
List<ResolveInfo> launchables = pm.queryIntentActivities(email, 0);
// ////////////new
list = new ArrayList<ResolveInfo>();
for (int i = 0; i < launchables.size(); i++) {
String string = launchables.get(i).toString();
Log.d("heh", string);
//check only messangers
if (string.contains("whatsapp")) {
list.add(launchables.get(i));
}
}
Collections.sort(list, new ResolveInfo.DisplayNameComparator(pm));
int size = launchables.size();
adapter = new AppAdapter(pm, list, MainActivity.this);
lvOfIms.setAdapter(adapter);
lvOfIms.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1,
int position, long arg3) {
ResolveInfo launchable = adapter.getItem(position);
ActivityInfo activity = launchable.activityInfo;
ComponentName name = new ComponentName(
activity.applicationInfo.packageName, activity.name);
email.addCategory(Intent.CATEGORY_LAUNCHER);
email.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
email.setComponent(name);
startActivity(email);
dialogCustomChooser.dismiss();
}
});
dialogCustomChooser.show();
}

I'm really late here but I believe that nowadays we have shorter and better solutions to send messages through WhatsApp.
You can use the following to call the system picker, then choose which app you will use to share whatever you want.
Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, "This is my text to send.");
sendIntent.setType("text/plain");
startActivity(sendIntent);
If you are really need to send through WhatsApp all you need to do is the following (You will skip the system picker)
Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, "This is my text to send.");
sendIntent.setType("text/plain");
// Put this line here
sendIntent.setPackage("com.whatsapp");
//
startActivity(sendIntent);
If you need more information you can find it here: WhatsApp FAQ

private fun sendWhatsappMessage(phoneNumber:String, text:String) {
val url = if (Intent().setPackage("com.whatsapp").resolveActivity(packageManager) != null) {
"whatsapp://send?text=Hello&phone=$phoneNumber"
} else {
"https://api.whatsapp.com/send?phone=$phoneNumber&text=$text"
}
val browserIntent = Intent(Intent.ACTION_VIEW, Uri.parse(url))
startActivity(browserIntent)
}
This is a much easier way to achieve this. This code checks if whatsapp is installed on the device. If it is installed, it bypasses the system picker and goes to the contact on whatsapp and prefields the text in the chat. If not installed it opens whatsapp link on your web browser.

Sending to WhatsApp Number that exist in your contact list.
Notice that we are using ACTION_SEND
Intent whatsappIntent = new Intent(Intent.ACTION_SEND);
whatsappIntent.setType("text/plain");
whatsappIntent.setPackage("com.whatsapp");
whatsappIntent.putExtra(Intent.EXTRA_TEXT, "SMS TEXT, TEXT THAT YOU NEED TO SEND");
try {
startActivityForResult(whatsappIntent, 100);
} catch (Exception e) {
Toast.makeText(YourActivity.this, "App is not installed", Toast.LENGTH_SHORT).show();
}
If Number doesn't exist in contact list. Use WhatsApp API.
String number = number_phone.getText().toString(); // I toke it from Dialog box
number = number.substring(1); // To remove 0 at the begging of number (Optional) but needed in my case
number = "962" + number; // Replace it with your country code
String url = "https://api.whatsapp.com/send?phone=" + number + "&text=" + Uri.parse("Text that you want to send to the current user");
Intent whatsappIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
whatsappIntent.setPackage("com.whatsapp");
whatsappIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
try {
context.startActivity(whatsappIntent);
} catch (android.content.ActivityNotFoundException ex) {
Toast.makeText(YourActivity.this, "App is not installed", Toast.LENGTH_SHORT).show();
}

Check this code,
public void share(String subject,String text) {
final Intent intent = new Intent(Intent.ACTION_SEND);
String score=1000;
intent.setType("text/plain");
intent.putExtra(Intent.EXTRA_SUBJECT, score);
intent.putExtra(Intent.EXTRA_TEXT, text);
startActivity(Intent.createChooser(intent, getString(R.string.share)));
}

This works to me:
public static void shareWhatsApp(Activity appActivity, String texto) {
Intent sendIntent = new Intent(Intent.ACTION_SEND);
sendIntent.setType("text/plain");
sendIntent.putExtra(android.content.Intent.EXTRA_TEXT, texto);
PackageManager pm = appActivity.getApplicationContext().getPackageManager();
final List<ResolveInfo> matches = pm.queryIntentActivities(sendIntent, 0);
boolean temWhatsApp = false;
for (final ResolveInfo info : matches) {
if (info.activityInfo.packageName.startsWith("com.whatsapp")) {
final ComponentName name = new ComponentName(info.activityInfo.applicationInfo.packageName, info.activityInfo.name);
sendIntent.addCategory(Intent.CATEGORY_LAUNCHER);
sendIntent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY | Intent.FLAG_ACTIVITY_NEW_TASK);
sendIntent.setComponent(name);
temWhatsApp = true;
break;
}
}
if(temWhatsApp) {
//abre whatsapp
appActivity.startActivity(sendIntent);
} else {
//alerta - você deve ter o whatsapp instalado
Toast.makeText(appActivity, appActivity.getString(R.string.share_whatsapp), Toast.LENGTH_SHORT).show();
}
}

get the contact number whom you want to send the message and create uri for whatsapp, here c is a Cursor returning the selected contact.
Uri.parse("content://com.android.contacts/data/" + c.getString(0)));
i.setType("text/plain");
i.setPackage("com.whatsapp"); // so that only Whatsapp reacts and not the chooser
i.putExtra(Intent.EXTRA_SUBJECT, "Subject");
i.putExtra(Intent.EXTRA_TEXT, "I'm the body.");
startActivity(i);

From the documentation
To create your own link with a pre-filled message that will
automatically appear in the text field of a chat, use
https://wa.me/whatsappphonenumber/?text=urlencodedtext where
whatsappphonenumber is a full phone number in international format and
URL-encodedtext is the URL-encoded pre-filled message.
Example:https://wa.me/15551234567?text=I'm%20interested%20in%20your%20car%20for%20sale
Code example
val phoneNumber = "13492838472"
val text = "Hey, you know... I love StackOverflow :)"
val uri = Uri.parse("https://wa.me/$phoneNumber/?text=$text")
val sendIntent = Intent(Intent.ACTION_VIEW, uri)
startActivity(sendIntent)

This one worked finally for me in Kotlin:
private fun navigateToWhatsApp() {
try {
val url = "https://api.whatsapp.com/send?phone=+91${getString(R.string.contact)}"
startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(url)).setPackage("com.whatsapp"))
} catch (e: Exception) {
showToast("Whatsapp app not installed in your device")
}
}

The following API can be used in c++ as shown in my article.
You need to define several constants:
//
#define    GroupAdmin                <YOUR GROUP ADMIN MOBILE PHONE>
#define GroupName                <YOUR GROUP NAME>
#define CLIENT_ID                <YOUR CLIENT ID>
#define CLIENT_SECRET            <YOUR CLIENT SECRET>
#define GROUP_API_SERVER        L"api.whatsmate.net"
#define GROUP_API_PATH          L"/v3/whatsapp/group/text/message/12"
#define IMAGE_SINGLE_API_URL    L"http://api.whatsmate.net/v3/whatsapp/group/image/message/12"
//
Then you connect to the API’s endpoint.
hOpenHandle = InternetOpen(_T("HTTP"), INTERNET_OPEN_TYPE_DIRECT, NULL, NULL, 0);
if (hOpenHandle == NULL)
{
return false;
}
hConnectHandle = InternetConnect(hOpenHandle,
GROUP_API_SERVER,
INTERNET_DEFAULT_HTTP_PORT,
NULL, NULL, INTERNET_SERVICE_HTTP,
0, 1);
if (hConnectHandle == NULL)
{
InternetCloseHandle(hOpenHandle);
return false;
}
Then send both header and body and wait for the result that needs to be “OK”.
Step 1 - open an HTTP request:
const wchar_t *AcceptTypes[] = { _T("application/json"),NULL };
HINTERNET hRequest = HttpOpenRequest(hConnectHandle, _T("POST"), GROUP_API_PATH, NULL, NULL, AcceptTypes, 0, 0);
if (hRequest == NULL)
{
InternetCloseHandle(hConnectHandle);
InternetCloseHandle(hOpenHandle);
return false;
}
Step 2 - send the header:
std::wstring HeaderData;
HeaderData += _T("X-WM-CLIENT-ID: ");
HeaderData += _T(CLIENT_ID);
HeaderData += _T("\r\nX-WM-CLIENT-SECRET: ");
HeaderData += _T(CLIENT_SECRET);
HeaderData += _T("\r\n");
HttpAddRequestHeaders(hRequest, HeaderData.c_str(), HeaderData.size(), NULL);
Step 3 - send the message:
std::wstring WJsonData;
WJsonData += _T("{");
WJsonData += _T("\"group_admin\":\"");
WJsonData += groupAdmin;
WJsonData += _T("\",");
WJsonData += _T("\"group_name\":\"");
WJsonData += groupName;
WJsonData += _T("\",");
WJsonData += _T("\"message\":\"");
WJsonData += message;
WJsonData += _T("\"");
WJsonData += _T("}");
const std::string JsonData(WJsonData.begin(), WJsonData.end());
bResults = HttpSendRequest(hRequest, NULL, 0, (LPVOID)(JsonData.c_str()), JsonData.size());
Now just check the result:
TCHAR StatusText[BUFFER_LENGTH] = { 0 };
DWORD StatusTextLen = BUFFER_LENGTH;
HttpQueryInfo(hRequest, HTTP_QUERY_STATUS_TEXT, &StatusText, &StatusTextLen, NULL);
bResults = (StatusTextLen && wcscmp(StatusText, L"OK")==FALSE);

Only Email apps to resolve an Intent

I have a problem .. I want only email activities to resolve intent ACTION.SEND but beside email I get other apps as well (e.g TubeMate) even though I have set the mime type as 'message/rfc822' ... Any idea how can I get Email applications to resolve it ..

String recepientEmail = ""; // either set to destination email or leave empty
Intent intent = new Intent(Intent.ACTION_SENDTO);
intent.setData(Uri.parse("mailto:" + recepientEmail));
startActivity(intent);
The point is to use ACTION_SENDTO as action and mailto: as data. If you want to let the user specify the destination email, use just mailto:; if you specify email yourself, use mailto:name#example.com
Suggested method filters all the application, that can send email(such as default email app or gmail)

Here is how I send email with attachments (proved to work with attachments of various MIME types, even in the same email) and only allow email apps (it also has a solution for cases that no app support "mailto").
At first, we try and get activities that support mailto: format. If none are found then we get all activities that supports the message/rfc822 MIME type.
We select the default app (if there is a default) or allow the user to select from the available apps.
If no app supports mailto: and message/rfc822, then we use the default chooser.
public static void sendEmail(final Context p_context, final String p_subject, final String p_body, final ArrayList<String> p_attachments)
{
try
{
PackageManager pm = p_context.getPackageManager();
ResolveInfo selectedEmailActivity = null;
Intent emailDummyIntent = new Intent(Intent.ACTION_SENDTO);
emailDummyIntent.setData(Uri.parse("mailto:some#example.com"));
List<ResolveInfo> emailActivities = pm.queryIntentActivities(emailDummyIntent, 0);
if (null == emailActivities || emailActivities.size() == 0)
{
Intent emailDummyIntentRFC822 = new Intent(Intent.ACTION_SEND_MULTIPLE);
emailDummyIntentRFC822.setType("message/rfc822");
emailActivities = pm.queryIntentActivities(emailDummyIntentRFC822, 0);
}
if (null != emailActivities)
{
if (emailActivities.size() == 1)
{
selectedEmailActivity = emailActivities.get(0);
}
else
{
for (ResolveInfo currAvailableEmailActivity : emailActivities)
{
if (true == currAvailableEmailActivity.isDefault)
{
selectedEmailActivity = currAvailableEmailActivity;
}
}
}
if (null != selectedEmailActivity)
{
// Send email using the only/default email activity
sendEmailUsingSelectedEmailApp(p_context, p_subject, p_body, p_attachments, selectedEmailActivity);
}
else
{
final List<ResolveInfo> emailActivitiesForDialog = emailActivities;
String[] availableEmailAppsName = new String[emailActivitiesForDialog.size()];
for (int i = 0; i < emailActivitiesForDialog.size(); i++)
{
availableEmailAppsName[i] = emailActivitiesForDialog.get(i).activityInfo.applicationInfo.loadLabel(pm).toString();
}
AlertDialog.Builder builder = new AlertDialog.Builder(p_context);
builder.setTitle(R.string.select_mail_application_title);
builder.setItems(availableEmailAppsName, new DialogInterface.OnClickListener()
{
#Override
public void onClick(DialogInterface dialog, int which)
{
sendEmailUsingSelectedEmailApp(p_context, p_subject, p_body, p_attachments, emailActivitiesForDialog.get(which));
}
});
builder.create().show();
}
}
else
{
sendEmailUsingSelectedEmailApp(p_context, p_subject, p_body, p_attachments, null);
}
}
catch (Exception ex)
{
Log.e(TAG, "Can't send email", ex);
}
}
protected static void sendEmailUsingSelectedEmailApp(Context p_context, String p_subject, String p_body, ArrayList<String> p_attachments, ResolveInfo p_selectedEmailApp)
{
try
{
Intent emailIntent = new Intent(Intent.ACTION_SEND_MULTIPLE);
String aEmailList[] = { "some#example.com"};
emailIntent.putExtra(Intent.EXTRA_EMAIL, aEmailList);
emailIntent.putExtra(Intent.EXTRA_SUBJECT, null != p_subject ? p_subject : "");
emailIntent.putExtra(Intent.EXTRA_TEXT, null != p_body ? p_body : "");
if (null != p_attachments && p_attachments.size() > 0)
{
ArrayList<Uri> attachmentsUris = new ArrayList<Uri>();
// Convert from paths to Android friendly Parcelable Uri's
for (String currAttachemntPath : p_attachments)
{
File fileIn = new File(currAttachemntPath);
Uri currAttachemntUri = Uri.fromFile(fileIn);
attachmentsUris.add(currAttachemntUri);
}
emailIntent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, attachmentsUris);
}
if (null != p_selectedEmailApp)
{
Log.d(TAG, "Sending email using " + p_selectedEmailApp);
emailIntent.setComponent(new ComponentName(p_selectedEmailApp.activityInfo.packageName, p_selectedEmailApp.activityInfo.name));
p_context.startActivity(emailIntent);
}
else
{
Intent emailAppChooser = Intent.createChooser(emailIntent, "Select Email app");
p_context.startActivity(emailAppChooser);
}
}
catch (Exception ex)
{
Log.e(TAG, "Error sending email", ex);
}
}

private void sendEmail(Connect connect) {
Intent email = new Intent(Intent.ACTION_SENDTO);
email.setData(Uri.parse("mailto:"));
email.putExtra(Intent.EXTRA_EMAIL, new String[]{connect.getEmail()});
email.putExtra(Intent.EXTRA_SUBJECT, "");
email.putExtra(Intent.EXTRA_TEXT, "");
try {
startActivity(Intent.createChooser(email, getString(R.string.choose_email_client)));
} catch (ActivityNotFoundException activityNotFoundException) {
UIUtils.showShortSnackBar(fragmentConnectLayout, getString(R.string.no_email_client));
}
}
Refer https://developer.android.com/guide/components/intents-common.html#Email

In Android, there's no such thing as an email activity.
There's also no intent filter that can be created to include only email applications.
Each application (or activity) can define its own intent filters.
So when using intent ACTION_SEND, you'll have to rely on the users intelligence to pickhis favorite email app from the chooser (and not TubeMate).

u can also use:
//writes messages only to email clients
public void setWriteEmailButton() {
btnWriteMail.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
Intent i = new Intent(Intent.ACTION_SENDTO);
i.setData(Uri.parse("mailto:"));
i.putExtra(Intent.EXTRA_EMAIL , new String[]{mConsultantInfos.getConsultantEMail()});
i.putExtra(Intent.EXTRA_SUBJECT, mContext.getString(R.string.txtSubjectConsultantMail));
i.putExtra(Intent.EXTRA_TEXT , "");
try {
startActivity(Intent.createChooser(i, mContext.getString(R.string.txtWriteMailDialogTitle)));
} catch (android.content.ActivityNotFoundException ex) {
UI.showShortToastMessage(mContext, R.string.msgNoMailClientsInstalled);
}
}
});
}
have fun (combination of both ;))

This work for me to open only email apps:
Intent intent = new Intent(Intent.ACTION_SENDTO);
intent.setData(Uri.parse("mailto:jorgesys12#gmail.com"));
startActivity(intent);

Try this
String subject = "Feedback";
String bodyText = "Enter text email";
String mailto = "mailto:bob#example.org" +
"?cc=" + "" +
"&subject=" + Uri.encode(subject) +
"&body=" + Uri.encode(bodyText);
Intent emailIntent = new Intent(Intent.ACTION_SENDTO);
emailIntent.setData(Uri.parse(mailto));
try {
startActivity(emailIntent);
} catch (ActivityNotFoundException e) {
//TODO: Handle case where no email app is available
}
Credit: https://medium.com/#cketti/android-sending-email-using-intents-3da63662c58f

When I use intent android.content.Intent.ACTION_SENDTO doesn't work for me because it shows many apps, some apps are not email clients. I found this way and it works perfectly for me.
Intent testIntent = new Intent(Intent.ACTION_VIEW);
Uri data = Uri.parse("mailto:?subject=" + "blah blah subject" + "&body=" + "blah blah body" + "&to=" + "sendme#me.com");
testIntent.setData(data);
startActivity(testIntent);

This works for me
Intent intent = new Intent("android.intent.action.SENDTO", Uri.fromParts("mailto", "yourmail#gmail.com", null));
intent.putExtra("android.intent.extra.SUBJECT", "Enter Subject Here");
startActivity(Intent.createChooser(intent, "Select an email client"));

Please check : https://developer.android.com/guide/components/intents-common#ComposeEmail
String[] sendTo = {}; // people who will receive the email
String subject = "implicit intent | sending email";
String message = "Hi, this is just a test to check implicit intent.";
Intent email = new Intent(Intent.ACTION_SENDTO);
email.setData(Uri.parse("mailto:")); // only email apps should handle this
email.putExtra(Intent.EXTRA_EMAIL, sendTo);
email.putExtra(Intent.EXTRA_SUBJECT, subject);// email subject / title
email.putExtra(Intent.EXTRA_TEXT, message);//message that you want to send
// Create intent to show the chooser dialog
Intent chooser = Intent.createChooser(email, "Choose an Email client :");
// Verify the original intent will resolve to at least one activity
if (chooser.resolveActivity(getPackageManager()) != null) {
startActivity(chooser);
}

This is an absolutely simple and 100% working approach. Thanks to the Open source developer, cketti for sharing this concise and neat solution.
String mailto = "mailto:bob#example.org" +
"?cc=" + "alice#example.com" +
"&subject=" + Uri.encode(subject) +
"&body=" + Uri.encode(bodyText);
Intent emailIntent = new Intent(Intent.ACTION_SENDTO);
emailIntent.setData(Uri.parse(mailto));
try {
startActivity(emailIntent);
} catch (ActivityNotFoundException e) {
//TODO: Handle case where no email app is available
}
And this is the link to his/her gist.

Here's a code snippet that launches ONLY email apps.
Intent intent = new Intent(Intent.ACTION_SENDTO);
intent.setData(Uri.parse("mailto:example#example.com"));
intent.putExtra(Intent.EXTRA_SUBJECT, "This is the subject"));
intent.putExtra(Intent.EXTRA_TEXT, "Hi, how're you doing?"));
if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
startActivity(intent);
}
I hope this helps.

Following three lines of code is sufficient to finish your task, nothing EXTRAS needed. Hope it helps.
Intent intent = new Intent(Intent.ACTION_SENDTO);
intent.setData(Uri.parse("mailto:destination_gmail#gmail.com"));
startActivity(Intent.createChooser(intent, "Send email using.."));

You can also use this. It's more efficient
Intent mailIntent = new Intent(Intent.ACTION_SEND);
String mailTo[] = new String[] { "MAIL_TO_1", "MAIL_TO_2" };
mailIntent.putExtra(Intent.EXTRA_EMAIL, mailTo);
mailIntent.putExtra(Intent.EXTRA_SUBJECT, "Your subject");
mailIntent.putExtra(Intent.EXTRA_TEXT, "MailsBody");
mailIntent.setType("plain/text");
startActivity(Intent.createChooser(mailIntent, "only email client"));
This code sample show only email client which are currently installed on your device

Share application "link" in Android

I want my application user to be able to share/recommend my app to other users. I use the ACTION_SEND intent. I add plain text saying something along the lines of: install this cool application. But I can't find a way to enable users to directly go to the install screen of market place for instance. All I can provide them with is a web link or some text.
In other words I am looking for a very direct way for android users to have my app installed.
Thanks for any help/pointers,
Thomas

This will let you choose from email, whatsapp or whatever.
try {
Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("text/plain");
shareIntent.putExtra(Intent.EXTRA_SUBJECT, "My application name");
String shareMessage= "\nLet me recommend you this application\n\n";
shareMessage = shareMessage + "https://play.google.com/store/apps/details?id=" + BuildConfig.APPLICATION_ID +"\n\n";
shareIntent.putExtra(Intent.EXTRA_TEXT, shareMessage);
startActivity(Intent.createChooser(shareIntent, "choose one"));
} catch(Exception e) {
//e.toString();
}

You can use also ShareCompat class from support library.
ShareCompat.IntentBuilder.from(activity)
.setType("text/plain")
.setChooserTitle("Chooser title")
.setText("http://play.google.com/store/apps/details?id=" + activity.getPackageName())
.startChooser();
https://developer.android.com/reference/android/support/v4/app/ShareCompat.html

Thomas,
You would want to provide your users with a market:// link which will bring them directly to the details page of your app. The following is from developer.android.com:
Loading an application's Details page
In Android Market, every application
has a Details page that provides an
overview of the application for users.
For example, the page includes a short
description of the app and screen
shots of it in use, if supplied by the
developer, as well as feedback from
users and information about the
developer. The Details page also
includes an "Install" button that lets
the user trigger the download/purchase
of the application.
If you want to refer the user to a
specific application, your
application can take the user directly
to the application's Details page. To
do so, your application sends an
ACTION_VIEW Intent that includes a URI
and query parameter in this format:
market://details?id=
In this case, the packagename
parameter is target application's
fully qualified package name, as
declared in the package attribute of
the manifest element in the
application's manifest file. For
example:
market://details?id=com.example.android.jetboy
Source: http://developer.android.com/guide/publishing/publishing.html

Call this method:
public static void shareApp(Context context)
{
final String appPackageName = context.getPackageName();
Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, "Check out the App at: https://play.google.com/store/apps/details?id=" + appPackageName);
sendIntent.setType("text/plain");
context.startActivity(sendIntent);
}

To be more exact
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse("https://play.google.com/store/apps/details?id=com.android.example"));
startActivity(intent);
or if you want to share your other apps from your dev. account you can do something like this
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse("https://play.google.com/store/apps/developer?id=Your_Publisher_Name"));
startActivity(intent);

To automatically fill in the application name and application id you could use this:
int applicationNameId = context.getApplicationInfo().labelRes;
final String appPackageName = context.getPackageName();
Intent i = new Intent(Intent.ACTION_SEND);
i.setType("text/plain");
i.putExtra(Intent.EXTRA_SUBJECT, activity.getString(applicationNameId));
String text = "Install this cool application: ";
String link = "https://play.google.com/store/apps/details?id=" + appPackageName;
i.putExtra(Intent.EXTRA_TEXT, text + " " + link);
startActivity(Intent.createChooser(i, "Share link:"));

Share application with title is you app_name, content is your application link
fun shareApp(context: Context) {
val appPackageName = BuildConfig.APPLICATION_ID
val appName = context.getString(R.string.app_name)
val shareBodyText = "https://play.google.com/store/apps/details?id=$appPackageName"
val sendIntent = Intent(Intent.ACTION_SEND).apply {
type = "text/plain"
putExtra(Intent.EXTRA_TITLE, appName)
putExtra(Intent.EXTRA_TEXT, shareBodyText)
}
context.startActivity(Intent.createChooser(sendIntent, null))
}

I know this question has been answered, but I would like to share an alternate solution:
Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("text/plain");
String shareSubText = "WhatsApp - The Great Chat App";
String shareBodyText = "https://play.google.com/store/apps/details?id=com.whatsapp&hl=en";
shareIntent.putExtra(Intent.EXTRA_SUBJECT, shareSubText);
shareIntent.putExtra(Intent.EXTRA_TEXT, shareBodyText);
startActivity(Intent.createChooser(shareIntent, "Share With"));

finally, this code is worked for me to open the email client from android device.
try this snippet.
Intent testIntent = new Intent(Intent.ACTION_VIEW);
Uri data = Uri.parse("mailto:?subject=" + "Feedback" + "&body=" + "Write Feedback here....." + "&to=" + "someone#example.com");
testIntent.setData(data);
startActivity(testIntent);

Kotlin extension for share action. You can share whatever you want e.g. link
fun Context.share(text: String) =
this.startActivity(Intent().apply {
action = Intent.ACTION_SEND
putExtra(Intent.EXTRA_TEXT, text)
type = "text/plain"
})
Usage
context.share("Check https://stackoverflow.com")

According to official docs in 2021 preferred way is
fun shareTextToOtherApps(message: String) {
val sendIntent: Intent = Intent().apply {
action = Intent.ACTION_SEND
putExtra(Intent.EXTRA_TEXT, message)
type = "text/plain"
}
val shareIntent = Intent.createChooser(sendIntent, null)
startActivity(shareIntent)
}

Actually the best way to sheared you app between users , google (firebase) proved new technology Firebase Dynamic Link Through several lines you can make it
this is documentation
https://firebase.google.com/docs/dynamic-links/
and the code is
Uri dynamicLinkUri = dynamicLink.getUri();
Task<ShortDynamicLink> shortLinkTask = FirebaseDynamicLinks.getInstance().createDynamicLink()
.setLink(Uri.parse("https://www.google.jo/"))
.setDynamicLinkDomain("rw4r7.app.goo.gl")
.buildShortDynamicLink()
.addOnCompleteListener(this, new OnCompleteListener<ShortDynamicLink>() {
#Override
public void onComplete(#NonNull Task<ShortDynamicLink> task) {
if (task.isSuccessful()) {
// Short link created
Uri shortLink = task.getResult().getShortLink();
Uri flowchartLink = task.getResult().getPreviewLink();
Intent intent = new Intent();
intent.setAction(Intent.ACTION_SEND);
intent.putExtra(Intent.EXTRA_TEXT, shortLink.toString());
intent.setType("text/plain");
startActivity(intent);
} else {
// Error
// ...
}
}
});

try {
Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("text/plain");
shareIntent.putExtra(Intent.EXTRA_SUBJECT, "Your Application name");
String shareMessage= "\n Your Message \n\n";
shareMessage = shareMessage + "https://play.google.com/store/apps/details?id=" + BuildConfig.APPLICATION_ID +"\n\n";
shareIntent.putExtra(Intent.EXTRA_TEXT, shareMessage);
startActivity(Intent.createChooser(shareIntent, "choose one"));
} catch(Exception e) {
//e.toString();
}

#Linh answer is almost good but causing a crash because of the missing FLAG_ACTIVITY_NEW_TASK, here is what worked for me
public static void shareApp(Context context) {
final String appPackageName = context.getPackageName();
Intent sendIntent = new Intent();
sendIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, "Check out the App at: https://play.google.com/store/apps/details?id=" + appPackageName);
sendIntent.setType("text/plain");
context.startActivity(sendIntent);
}