Prevent crash

app/src/main/java/eu/faircode/email/FragmentGmail.java

@@ -102,15 +102,13 @@ public class FragmentGmail extends FragmentBase {
         btnSelect.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                String name = etName.getText().toString().trim();
-                if (TextUtils.isEmpty(name)) {
-                    tvError.setText(R.string.title_no_name);
-                    grpError.setVisibility(View.VISIBLE);
-                    return;
-                }
-
+                try {
                     grpError.setVisibility(View.GONE);
 
+                    String name = etName.getText().toString().trim();
+                    if (TextUtils.isEmpty(name))
+                        throw new IllegalArgumentException(getString(R.string.title_no_name));
+
                     startActivityForResult(
                             Helper.getChooser(getContext(), newChooseAccountIntent(
                                     null,
@@ -122,6 +120,13 @@ public class FragmentGmail extends FragmentBase {
                                     null,
                                     null)),
                             ActivitySetup.REQUEST_CHOOSE_ACCOUNT);
+                } catch (Throwable ex) {
+                    if (ex instanceof IllegalArgumentException)
+                        tvError.setText(ex.getMessage());
+                    else
+                        tvError.setText(Log.formatThrowable(ex, false));
+                    grpError.setVisibility(View.VISIBLE);
+                }
             }
         });