Fix the display abnormal of Tap & pay screen in landscape mode

- Add a new layout for the landscape mode.
- Update the logic to show image when has no any visible preference.

Bug: 141559275
Test: manual view
make RunSettingsRoboTests -j ROBOTEST_FILTER=com.android.settings.nfc
Change-Id: Ib59ad3347e0635c07d61d557d75f8feaf78ff23c

res/layout-land/nfc_payment_empty.xml

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2019 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent"
+              android:layout_gravity="center"
+              android:gravity="center"
+              android:orientation="horizontal">
+    <ImageView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:gravity="center_vertical|right"
+        android:src="@drawable/tapandpay_emptystate"/>
+    <TextView
+        android:layout_width="264dp"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:paddingStart="36dp"
+        android:textAppearance="?android:attr/textAppearanceLarge"
+        android:textColor="?android:attr/textColorSecondary"
+        android:text="@string/nfc_payment_no_apps"/>
+</LinearLayout>

src/com/android/settings/nfc/PaymentSettings.java

@@ -30,6 +30,10 @@ import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
 
+import androidx.annotation.VisibleForTesting;
+import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
+
 import com.android.settings.R;
 import com.android.settings.dashboard.DashboardFragment;
 import com.android.settings.search.BaseSearchIndexProvider;
@@ -70,10 +74,11 @@ public class PaymentSettings extends DashboardFragment {
     @Override
     public void onViewCreated(View view, Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
-
+        if (isShowEmptyImage(getPreferenceScreen())) {
-        View emptyView = getActivity().getLayoutInflater().inflate(
+            View emptyView = getActivity().getLayoutInflater().inflate(
-                R.layout.nfc_payment_empty, null, false);
+                    R.layout.nfc_payment_empty, null, false);
-        ((ViewGroup) view.findViewById(android.R.id.list_container)).addView(emptyView);
+            ((ViewGroup) view.findViewById(android.R.id.list_container)).addView(emptyView);
+        }
     }
 
     @Override
@@ -97,6 +102,17 @@ public class PaymentSettings extends DashboardFragment {
         menuItem.setShowAsActionFlags(MenuItem.SHOW_AS_ACTION_NEVER);
     }
 
+    @VisibleForTesting
+    boolean isShowEmptyImage(PreferenceScreen screen) {
+        for (int i = 0; i < screen.getPreferenceCount(); i++) {
+            final Preference preference = screen.getPreference(i);
+            if(preference.isVisible()) {
+                return false;
+            }
+        }
+        return true;
+    }
+
     public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
             new BaseSearchIndexProvider(R.xml.nfc_payment_settings) {
 

tests/robotests/src/com/android/settings/nfc/PaymentSettingsTest.java

@@ -29,6 +29,10 @@ import android.content.pm.UserInfo;
 import android.os.UserHandle;
 import android.os.UserManager;
 
+import androidx.preference.Preference;
+import androidx.preference.PreferenceManager;
+import androidx.preference.PreferenceScreen;
+
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -113,6 +117,34 @@ public class PaymentSettingsTest {
         assertThat(niks).containsAllOf(FOREGROUND_KEY, PAYMENT_KEY, PAYMENT_SCREEN_KEY);
     }
 
+    @Test
+    public void isShowEmptyImage_hasVisiblePreference_returnFalse() {
+        final PaymentSettings paymentSettings = new PaymentSettings();
+        final PreferenceManager preferenceManager = new PreferenceManager(mContext);
+        final PreferenceScreen screen = preferenceManager.createPreferenceScreen(mContext);
+        final Preference preference1 = new Preference(mContext);
+        screen.addPreference(preference1);
+        final Preference preference2 = new Preference(mContext);
+        screen.addPreference(preference2);
+
+        assertThat(paymentSettings.isShowEmptyImage(screen)).isFalse();
+    }
+
+    @Test
+    public void isShowEmptyImage_hasNoVisiblePreference_returnTrue() {
+        final PaymentSettings paymentSettings = new PaymentSettings();
+        final PreferenceManager preferenceManager = new PreferenceManager(mContext);
+        final PreferenceScreen screen = preferenceManager.createPreferenceScreen(mContext);
+        final Preference preference1 = new Preference(mContext);
+        preference1.setVisible(false);
+        screen.addPreference(preference1);
+        final Preference preference2 = new Preference(mContext);
+        screen.addPreference(preference2);
+        preference2.setVisible(false);
+
+        assertThat(paymentSettings.isShowEmptyImage(screen)).isTrue();
+    }
+
     @Implements(PaymentBackend.class)
     public static class ShadowPaymentBackend {
         private ArrayList<PaymentBackend.PaymentAppInfo> mAppInfos;