Google Android - это несложно

Hello, I am using a service to upload files. While a file is being uploaded, I am displaying a ProgressDialog on the screen. But the issue is that when I rotate the device screen the ProgressDialog dismisses suddenly. I don't know what is the issue with this thing. Is there any kind of thing that I ...

Hello, My simple requirement is that I want user validation when they enter data. For example, if a user enters a number, then my code should check whether the data entered by the user in the EditText is a number or not. And In case if the data entered fails it should display an error message tellin...