#8886 disable save button if url validation fails

app/src/main/java/se/leap/bitmaskclient/AddProviderBaseActivity.java

 package se.leap.bitmaskclient;
 
 import android.content.Intent;
+import android.os.Bundle;
 import android.support.design.widget.TextInputEditText;
 import android.support.design.widget.TextInputLayout;
 import android.text.Editable;
@@ -10,6 +11,8 @@ import android.widget.Button;
 
 import butterknife.InjectView;
 
+import static se.leap.bitmaskclient.ProviderListBaseActivity.EXTRAS_KEY_INVALID_URL;
+
 /**
  * Created by cyberta on 30.06.18.
  */
@@ -27,10 +30,15 @@ public abstract class AddProviderBaseActivity extends ConfigWizardBaseActivity {
     @InjectView(R.id.button_cancel)
     Button cancelButton;
 
+    @InjectView(R.id.button_save)
+    Button saveButton;
+
 
     protected void init() {
-        if (this.getIntent().getExtras() != null) {
-            editUrl.setText(this.getIntent().getExtras().getString(ProviderListBaseActivity.EXTRAS_KEY_INVALID_URL));
+        Bundle extras = this.getIntent().getExtras();
+        if (extras != null && extras.containsKey(EXTRAS_KEY_INVALID_URL)) {
+            editUrl.setText(extras.getString(EXTRAS_KEY_INVALID_URL));
+            saveButton.setEnabled(true);
         }
 
         setupSaveButton();
@@ -82,8 +90,11 @@ public abstract class AddProviderBaseActivity extends ConfigWizardBaseActivity {
             public void afterTextChanged(Editable s) {
                 if (!validURL(getURL())) {
                     urlError.setError(getString(R.string.not_valid_url_entered));
+                    saveButton.setEnabled(false);
+
                 } else {
                     urlError.setError(null);
+                    saveButton.setEnabled(true);
                 }
             }
         });

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

@@ -76,6 +76,7 @@
                     android:layout_height="wrap_content"
                     android:layout_marginLeft="@dimen/add_button_margin"
                     android:layout_marginStart="@dimen/add_button_margin"
+                    android:enabled="false"
                     android:text="@string/save" />
 
             </LinearLayout>

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

@@ -84,6 +84,7 @@
                     android:minWidth="80dp"
                     android:layout_marginLeft="@dimen/add_button_margin"
                     android:layout_marginStart="@dimen/add_button_margin"
+                    android:enabled="false"
                     android:text="@string/save" />
             </LinearLayout>
         </RelativeLayout>