Good news I downloaded the Android studio and after several problems choosing the emulator (I mention it in case it has something to do) I started to try the Android Studio. I have had two problems:
When I drag in the xml file a textview (or any other option) to the screen that simulates that of a mobile phone, it does not appear on that screen, however it does appear as if I selected it below the left.
When I start programming in the java file, I do not detect any errors, hehe clarifying, when I write any nonsense that does not belong to the java syntax, it does not detect that there is an error.
Thank you very much, I do not know if I expressed myself completely. (edited) The version of Android Studio is 3.1.3. I put some pictures to clarify it better:
-Question 2: Here you can see that it does not recognize me that there is a mistake in writing when in NetBeans if what ago Also, when creating the onCreate method, a library should be imported, but due to the failure described, it does not do so.
-Question 1: I drag the text view to the screen simulator and it is not displayed
