Unable to Click on a element using in appium

Support
1

Hi,
I was unable to click on a element in my Application which i am trying to automate. I have a floating element to compose which is same as “Compose” button in gmail app.

Screenshot.png1680×1050 333 KB

Please find the UI Dump, Image for the same.

3

I tried to click the button using below code, it was throwing ArrayIndexOutOfBound exception with “7” as max index, So tried to click the element changing the index from 0-6 but it was not working.

My code:
wait.until(ExpectedConditions.visibilityOf(driver.findElement(By.className(“android.widget.Button”).get(7)))).click();

Please send me other methods which i can use to click on that button.