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Added HOW TO SEND PHOTOS BY FILE_ID into FAQ.md

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Andrew 2017-02-04 12:38:17 +03:00 committed by GitHub
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commit 78af132481
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TelegramBots.wiki/FAQ.md
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@ -1,5 +1,6 @@
* [How to get picture?](#how_to_get_picture)
* [How to send photos?](#how_to_send_photos)
* [How to send photos?](#how_to_send_photos)
* [How do I send photos by file_id?](#how_to_send_photos_file_id)
* [How to use custom keyboards?](#how_to_use_custom_keyboards)
* [How can I run my bot?](#how_to_host)
* [How can I compile my project?](#how_to_compile)
@ -122,6 +123,31 @@ There are several method to send a photo to an user using `sendPhoto` method: Wi
}
```
## <a id="how_to_send_photos_file_id"></a>How to send photo by its file_id? ##
In this example we will check if user sends to bot a photo, if it is, get Photo's file_id and send this photo by file_id to user.
```java
// If it is a photo
if (update.hasMessage() && update.getMessage().hasPhoto()) {
// Array with photos
List<PhotoSize> photos = update.getMessage().getPhoto();
// Get largest photo's file_id
String f_id = photos.stream()
.sorted(Comparator.comparing(PhotoSize::getFileSize).reversed())
.findFirst()
.orElse(null).getFileId();
// Send photo by file_id we got before
SendPhoto msg = new SendPhoto()
.setChatId(update.getMessage().getChatId())
.setPhoto(f_id)
.setCaption("Photo");
try {
sendPhoto(msg); // Call method to send the photo
} catch (TelegramApiException e) {
e.printStackTrace();
}
}
```
## <a id="how_to_use_custom_keyboards"></a>How to use custom keyboards? ##
@ -177,4 +203,4 @@ You don't need to spend a lot of money into hosting your own telegram bot. Basic
## <a id="how_to_compile"></a>How can I compile my project? ##
This is just one way, how you can compile it (here with maven). The example below below is compiling the TelegramBotsExample repo.
[![asciicast](https://asciinema.org/a/4np9i2u9onuitkg287ism23kj.png)](https://asciinema.org/a/4np9i2u9onuitkg287ism23kj)
[![asciicast](https://asciinema.org/a/4np9i2u9onuitkg287ism23kj.png)](https://asciinema.org/a/4np9i2u9onuitkg287ism23kj)