How to set focus to editText when fragment start?

问题

When MyFgment appear in screen, I want to set cursor focus on EditText in MyFragment automatically. I've tried EditText.requestFocus(), but it doesn't focus on EditText. How can I do??

回答1:

editText.requestFocus() will put focus to your View if it is focusable . But I guess you want to show keyboard when it is focused. If I am right then the following code might work for you.

editText.requestFocus();
InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, InputMethodManager.HIDE_IMPLICIT_ONLY);

The code is from this post. You can also check Android Developers for details.

回答2:

set this in your xml

android:focusable="true"
android:focusableInTouchMode="true"

and you can set this on onViewCreated program editText.isFocusableInTouchMode(); editText.setFocusable(true);

回答3:

Add these lines from class,

EditText.isFocusableInTouchMode();
EditText.setFocusable(true); 
EditText.requestFocus(); 

or add these attributes in layout,

android:focusable="true"
android:focusableInTouchMode="true"

来源：https://stackoverflow.com/questions/60665435/how-to-set-focus-to-edittext-when-fragment-start