How to send Emoji to a text box in android device using appium?

For this we have to add two capabilities :
capabilities.setCapability("unicodeKeyboard", true);
capabilities.setCapability("resetKeybord", true);
/***code for sending emoji***/
String ballEmoji = "\u26BD"; 
driver.findElement(By.xpath("//android.widget.EditText[@resource-id='com.pcloudy.pcloudykeystroke:id/txtrat']")).sendKeys(ballEmoji);