force to write uppercase in searchview in android

In code you can do so by adding the following.

searchView.setInputType(InputType.TYPE_TEXT_FLAG_CAP_CHARACTERS);

All of the other things you can add can be found here

Edit:

Actually a better way is to do

searchView.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_FLAG_CAP_SENTENCES);

Alternatively, you can also set the android:inputType to textCapWords inside searchable.xml that you will create if you followed the official SearchView setup guide.

https://developer.android.com/training/search/setup.html