如何在Android的Intent帮助下通过Whatsapp从自己的应用程序发送文本消息和图像？

Question

I am not able to send both text message and image through whatsapp . Either , I am able to start that particular contact chat thread without any message or I am only able to send message but not opening that particular contact chat thread.

I have followed following link : http://www.whatsapp.com/faq/en/android/28000012

Sending message through WhatsApp

Send Whatsapp message to specific contact

But not getting Success :(

Can anybody help me with this. How to Send a Text message and Image through whatsapp from Own Application with help of Intent in Android ?

Answer 1

Try using the following solution,

            Intent sendIntent = new Intent("android.intent.action.SEND");
            File f=new File("path to the file");
            Uri uri = Uri.fromFile(f);
            sendIntent.setComponent(new ComponentName("com.whatsapp","com.whatsapp.ContactPicker"));
            sendIntent.setType("image");
            sendIntent.putExtra(Intent.EXTRA_STREAM,uri);
            sendIntent.putExtra("jid", PhoneNumberUtils.stripSeparators("919xxxxxxxxx")+"@s.whatsapp.net");
            sendIntent.putExtra(Intent.EXTRA_TEXT,"sample text you want to send along with the image");
            startActivity(sendIntent);

EXTRA INFORMATION ABOUT THE PROCESS OF FINDING THE SOLUTION :

After reverse engineering WhatsApp, I came across the following snippet of Android manifest,

Normal Share intent, uses " SEND " which does not allow you to send to a specific contact and requires a contact picker.

The specific contact is picked up by Conversation class and uses " SEND_TO " action, but it uses sms body and can not take up image and other attachments.

 <activity android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|screenSize|smallestScreenSize|uiMode" android:name="com.whatsapp.Conversation" android:theme="@style/Theme.App.CondensedActionBar" android:windowSoftInputMode="stateUnchanged">
            <intent-filter>
                <action android:name="android.intent.action.SENDTO"/>
                <category android:name="android.intent.category.DEFAULT"/>
                <category android:name="android.intent.category.BROWSABLE"/>
                <data android:scheme="sms"/>
                <data android:scheme="smsto"/>
            </intent-filter>
        </activity>

Digging further, I came across this,

 <activity android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|screenSize|smallestScreenSize|uiMode" android:name="com.whatsapp.ContactPicker" android:theme="@style/Theme.App.NoActionBar">
            <intent-filter>
                <action android:name="android.intent.action.PICK"/>
                <category android:name="android.intent.category.DEFAULT"/>
                <category android:name="com.whatsapp"/>
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.SEND"/>
                <category android:name="android.intent.category.DEFAULT"/>
                <data android:mimeType="audio/*"/>
                <data android:mimeType="video/*"/>
                <data android:mimeType="image/*"/>
                <data android:mimeType="text/plain"/>
                <data android:mimeType="text/x-vcard"/>
                <data android:mimeType="application/pdf"/>
                <data android:mimeType="application/vnd.openxmlformats-officedocument.wordprocessingml.document"/>
                <data android:mimeType="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"/>
                <data android:mimeType="application/vnd.openxmlformats-officedocument.presentationml.presentation"/>
                <data android:mimeType="application/msword"/>
                <data android:mimeType="application/vnd.ms-excel"/>
                <data android:mimeType="application/vnd.ms-powerpoint"/>
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.SEND_MULTIPLE"/>
                <category android:name="android.intent.category.DEFAULT"/>
                <data android:mimeType="audio/*"/>
                <data android:mimeType="video/*"/>
                <data android:mimeType="image/*"/>
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.VIEW"/>
                <category android:name="android.intent.category.DEFAULT"/>
                <category android:name="android.intent.category.BROWSABLE"/>
                <data android:host="send" android:scheme="whatsapp"/>
            </intent-filter>
            <meta-data android:name="android.service.chooser.chooser_target_service" android:value=".ContactChooserTargetService"/>
        </activity>

Finally using a decompiler for ContactPicker and Conversation class,the extra key-value for phone number was found to be " jid ".

Answer 2

Earlier it wasn't possible but since the May '15 update. Checkout :

try{
    PackageInfo info = pm.getPackageInfo("com.whatsapp", PackageManager.GET_META_DATA);
    Intent sendIntent = new Intent();
    sendIntent.setAction(Intent.ACTION_SEND);
    String sendString = "some random string";
    sendIntent.setPackage("com.whatsapp");
    sendIntent.putExtra(Intent.EXTRA_TEXT, sendString);
    sendIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file));
    sendIntent.setType("image/*");
    startActivity(sendIntent);
} catch (Exception e){
    // some code
}

Here PackageInfo line is just to check if WhatsApp is installed. It throws Exception if not. You can just ignore that if you want to do a normal share (and setPackage also).

Also. It is important that the media you want to share has to be publicly available on local storage.

UPDATE

To send to a specific contact

Uri uri = Uri.parse("smsto:" + "<CONTACT_NUMBER>");
Intent i = new Intent(Intent.ACTION_SENDTO, uri);
i.putExtra(Intent.EXTRA_TEXT, whatsAppMessage);

As Action Send To is now allowed.

Answer 3

I saw many similar questions here by many peoples, and the answer is "Yes, this is possible". You can send messages directly to Whatsapp from your app without opening Whatsapp, and this can be achieved by using Wear Api and RemoteInput method.

It is a bit complicated task, so for reference you can use this code . It does the same that you are searching for.