Added POP3 hint

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

@@ -94,6 +94,7 @@ public class FragmentAccount extends FragmentBase {
 
     private Button btnAuthorize;
     private SwitchCompat swPop;
+    private TextView tvPopHint;
     private EditText etHost;
     private CheckBox cbStartTls;
     private CheckBox cbInsecure;
@@ -171,6 +172,7 @@ public class FragmentAccount extends FragmentBase {
 
         btnAuthorize = view.findViewById(R.id.btnAuthorize);
         swPop = view.findViewById(R.id.swPop);
+        tvPopHint = view.findViewById(R.id.tvPopHint);
         etHost = view.findViewById(R.id.etHost);
         etPort = view.findViewById(R.id.etPort);
         cbStartTls = view.findViewById(R.id.cbStartTls);
@@ -296,6 +298,7 @@ public class FragmentAccount extends FragmentBase {
             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                 boolean starttls = cbStartTls.isChecked();
                 if (isChecked) {
+                    tvPopHint.setVisibility(View.VISIBLE);
                     etHost.setHint("pop.domain.tld");
                     etPort.setHint(starttls ? "110" : "995");
                     etRealm.setText(null);
@@ -304,6 +307,7 @@ public class FragmentAccount extends FragmentBase {
                     btnCheck.setVisibility(View.GONE);
                     btnSave.setVisibility(View.VISIBLE);
                 } else {
+                    tvPopHint.setVisibility(View.GONE);
                     etHost.setHint("imap.domain.tld");
                     etPort.setHint(starttls ? "143" : "993");
                     btnCheck.setVisibility(View.VISIBLE);
@@ -461,6 +465,8 @@ public class FragmentAccount extends FragmentBase {
 
         btnAutoConfig.setEnabled(false);
 
+        tvPopHint.setVisibility(View.GONE);
+
         btnAuthorize.setVisibility(View.GONE);
         cbStartTls.setVisibility(View.GONE);
         cbInsecure.setVisibility(View.GONE);

app/src/main/res/layout/fragment_account.xml

@@ -46,6 +46,7 @@
             android:id="@+id/tvDomainHint"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
+            android:layout_marginTop="6dp"
             android:text="@string/title_optional"
             android:textAppearance="@style/TextAppearance.AppCompat.Small"
             android:textStyle="italic"
@@ -107,6 +108,17 @@
             app:layout_constraintStart_toEndOf="@id/swPop"
             app:layout_constraintTop_toTopOf="@id/swPop" />
 
+        <TextView
+            android:id="@+id/tvPopHint"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="6dp"
+            android:text="@string/title_pop3_hint"
+            android:textAppearance="@style/TextAppearance.AppCompat.Small"
+            android:textStyle="italic"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/swPop" />
+
         <!-- host -->
 
         <TextView
@@ -117,7 +129,7 @@
             android:text="@string/title_host"
             android:textAppearance="@style/TextAppearance.AppCompat.Small"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/swPop" />
+            app:layout_constraintTop_toBottomOf="@id/tvPopHint" />
 
         <EditText
             android:id="@+id/etHost"

app/src/main/res/values/strings.xml

@@ -249,9 +249,9 @@
     <string name="title_drafts_required">A drafts folder is required to send messages</string>
     <string name="title_account_delete">Delete this account permanently?</string>
     <string name="title_identity_delete">Delete this identity permanently?</string>
-    <string name="title_pop">POP is not supported</string>
     <string name="title_edit_html">Edit as HTML</string>
     <string name="title_last_connected">Last connected: %1$s</string>
+    <string name="title_pop3_hint">POP3 has significant limitations, so use IMAP whenever possible</string>
 
     <string name="title_unseen_count" translatable="false">%1$s (%2$d)</string>