android-make whatsapp调用

Question

我想对特定用户进行WhatsApp呼叫。我试过了，但不起作用：

Uri uri = Uri.parse("callto:" + phoneNUmber);
Intent i = new Intent(Intent.ACTION_CALL, uri);
i.setPackage("com.whatsapp");
startActivity(i);

我知道如何创建WhatsApp消息，代码相似并且有效：

Uri uri = Uri.parse("smsto:" + phoneNUmber);
Intent i = new Intent(Intent.ACTION_SENDTO, uri);
i.setPackage("com.whatsapp");
startActivity(i);

Answer 1

一个简单的解决方法是，查询ContactContract.Data的_id和MIME类型。

ContentResolver resolver = context.getContentResolver();  
cursor = resolver.query(
            ContactsContract.Data.CONTENT_URI,
            null, null, null,
            ContactsContract.Contacts.DISPLAY_NAME);

//Now read data from cursor like

while (cursor.moveToNext()) {
      long _id = cursor.getLong(cursor.getColumnIndex(ContactsContract.Data._ID));
      String displayName = cursor.getString(cursor.getColumnIndex(ContactsContract.Data.DISPLAY_NAME));
      String mimeType = cursor.getString(cursor.getColumnIndex(ContactsContract.Data.MIMETYPE));

      Log.d("Data", _id+ " "+ displayName + " " + mimeType );

}

输出将如下所示

12561雪vnd.android.cursor.item / vnd.com.whatsapp.profile

12562雪vnd.android.cursor.item / vnd.com.whatsapp.voip.call

现在，仅将MIME类型为_Id的内容保存在DB或其他地方
vnd.android.cursor.item/vnd.com.whatsapp.voip.call

然后像这样用这些联系人发起Whatsapp呼叫

Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);

// the _ids you save goes here at the end of /data/12562     
intent.setDataAndType(Uri.parse("content://com.android.contacts/data/_id"),
    "vnd.android.cursor.item/vnd.com.whatsapp.voip.call");
intent.setPackage("com.whatsapp");

startActivity(intent);