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？

问题描述：

我无法通过whatsapp发送短信和图片。要么，我能够
启动那个特定的联系人聊天帖子而没有任何消息，或者我只能发送消息但不能打开那个特定的联系人聊天帖子。

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.

我已按照以下链接：
http://www.whatsapp.com / faq / en / android / 28000012

通过WhatsApp发送消息

向特定联系人发送Whatsapp消息

但未获得成功：（

任何人都可以帮我这个。
如何在Android的Intent帮助下通过自己应用程序的whatsapp发送短信和图像？

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 ?

答

尝试使用以下解决方案，

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);

关于寻找解决方案的过程的额外信息：

在对WhatsApp进行逆向工程后，我遇到了以下Android清单片段，

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

正常分享意图，使用发送，它不允许您发送给特定联系人并需要联系人选择器。

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

特定联系人由对话类选取并使用 SEND_TO 操作，但它使用sms正文，无法占用图片和其他附件。

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>

进一步挖掘，我遇到了这个，

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>

最后使用针对ContactPicker和Conversation类的反编译器，找到了电话号码的额外键值是 jid 。

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

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？

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