diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 2d2f584..eae1730 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -2585,6 +2585,18 @@
             </intent-filter>
         </activity>
 
+        <activity
+            android:name=".wifi.NetworkRequestDialogActivity"
+            android:theme="@style/Transparent"
+            android:excludeFromRecents="true"
+            android:exported="true"
+            android:permission="android.permission.NETWORK_SETTINGS">
+            <intent-filter>
+                <action android:name="com.android.settings.wifi.NETWORK_REQUEST" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+        </activity>
+
         <activity android:name=".sim.SimDialogActivity"
                 android:theme="@style/Theme.AlertDialog"
                 android:label="@string/sim_settings_title"
diff --git a/src/com/android/settings/wifi/NetworkRequestDialogActivity.java b/src/com/android/settings/wifi/NetworkRequestDialogActivity.java
new file mode 100644
index 0000000..5d89f77
--- /dev/null
+++ b/src/com/android/settings/wifi/NetworkRequestDialogActivity.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+package com.android.settings.wifi;
+
+import android.os.Bundle;
+
+import androidx.annotation.Nullable;
+import androidx.fragment.app.FragmentActivity;
+
+/**
+ * When other applications request to have a wifi connection, framework will bring up this activity
+ * to let user select which wifi ap wanna to connect. This activity is just a door for framework
+ * call, and main functional process is at {@code NetworkRequestDialogFragment}.
+ */
+public class NetworkRequestDialogActivity extends FragmentActivity {
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        final NetworkRequestDialogFragment fragment = NetworkRequestDialogFragment.newInstance();
+        fragment.show(getSupportFragmentManager(), "NetworkRequestDialogFragment");
+    }
+}
diff --git a/src/com/android/settings/wifi/NetworkRequestDialogFragment.java b/src/com/android/settings/wifi/NetworkRequestDialogFragment.java
index 7078ae0..a1d8620 100644
--- a/src/com/android/settings/wifi/NetworkRequestDialogFragment.java
+++ b/src/com/android/settings/wifi/NetworkRequestDialogFragment.java
@@ -28,9 +28,11 @@
 import android.os.Handler;
 import android.os.Message;
 import android.widget.BaseAdapter;
+
 import androidx.annotation.NonNull;
 import androidx.appcompat.app.AlertDialog;
 import androidx.preference.internal.PreferenceImageView;
+
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -38,257 +40,276 @@
 import android.widget.ArrayAdapter;
 import android.widget.ProgressBar;
 import android.widget.TextView;
+
 import com.android.internal.logging.nano.MetricsProto;
 import com.android.settings.R;
 import com.android.settings.core.instrumentation.InstrumentedDialogFragment;
 import com.android.settingslib.Utils;
 import com.android.settingslib.wifi.AccessPoint;
+
 import java.util.ArrayList;
 import java.util.List;
 
 public class NetworkRequestDialogFragment extends InstrumentedDialogFragment implements
-    DialogInterface.OnClickListener, NetworkRequestMatchCallback {
+        DialogInterface.OnClickListener, NetworkRequestMatchCallback {
 
-  /** Message sent to us to stop scanning wifi and pop up timeout dialog. */
-  private static final int MESSAGE_STOP_SCAN_WIFI_LIST = 0;
+    /** Message sent to us to stop scanning wifi and pop up timeout dialog. */
+    private static final int MESSAGE_STOP_SCAN_WIFI_LIST = 0;
 
-  /** Delayed time to stop scanning wifi. */
-  private static final int DELAY_TIME_STOP_SCAN_MS = 30 * 1000;
+    /** Delayed time to stop scanning wifi. */
+    private static final int DELAY_TIME_STOP_SCAN_MS = 30 * 1000;
 
-  private List<AccessPoint> mAccessPointList;
-  private AccessPointAdapter mDialogAdapter;
-  private NetworkRequestUserSelectionCallback mUserSelectionCallback;
+    private List<AccessPoint> mAccessPointList;
+    private AccessPointAdapter mDialogAdapter;
+    private NetworkRequestUserSelectionCallback mUserSelectionCallback;
 
-  public static NetworkRequestDialogFragment newInstance() {
-    NetworkRequestDialogFragment dialogFragment = new NetworkRequestDialogFragment();
-    return dialogFragment;
-  }
-
-  @Override
-  public Dialog onCreateDialog(Bundle savedInstanceState) {
-    final Context context = getContext();
-
-    // Prepares title.
-    final LayoutInflater inflater = LayoutInflater.from(context);
-    final View customTitle = inflater.inflate(R.layout.network_request_dialog_title, null);
-
-    final TextView title = customTitle.findViewById(R.id.network_request_title_text);
-    title.setText(R.string.network_connection_request_dialog_title);
-    final ProgressBar progressBar = customTitle.findViewById(R.id.network_request_title_progress);
-    progressBar.setVisibility(View.VISIBLE);
-
-    // Prepares adapter.
-    mDialogAdapter = new AccessPointAdapter(context,
-        R.layout.preference_access_point, getAccessPointList());
-
-    final AlertDialog.Builder builder = new AlertDialog.Builder(context)
-        .setCustomTitle(customTitle)
-        .setAdapter(mDialogAdapter, this)
-        .setPositiveButton(R.string.cancel, (dialog, which) -> dialog.dismiss());
-    return builder.create();
-  }
-
-  @NonNull
-  List<AccessPoint> getAccessPointList() {
-    // Initials list for adapter, in case of display crashing.
-    if (mAccessPointList == null) {
-      mAccessPointList = new ArrayList<>();
-    }
-    return mAccessPointList;
-  }
-
-  private BaseAdapter getDialogAdapter() {
-    return mDialogAdapter;
-  }
-
-  @Override
-  public void onClick(DialogInterface dialog, int which) {
-    final List<AccessPoint> accessPointList = getAccessPointList();
-    if (accessPointList.size() == 0) {
-      return;  // Invalid values.
-    }
-    if (mUserSelectionCallback == null) {
-      return; // Callback is missing or not ready.
-    }
-
-    if (which < accessPointList.size()) {
-      WifiConfiguration wifiConfig = accessPointList.get(which).getConfig();
-      mUserSelectionCallback.select(wifiConfig);
-    }
-  }
-
-  @Override
-  public void onPause() {
-    super.onPause();
-
-    mHandler.removeMessages(MESSAGE_STOP_SCAN_WIFI_LIST);
-    final WifiManager wifiManager = getContext().getApplicationContext()
-        .getSystemService(WifiManager.class);
-    if (wifiManager != null) {
-      wifiManager.unregisterNetworkRequestMatchCallback(this);
-    }
-  }
-
-  @Override
-  public void onResume() {
-    super.onResume();
-
-    final WifiManager wifiManager = getContext().getApplicationContext()
-        .getSystemService(WifiManager.class);
-    if (wifiManager != null) {
-      wifiManager.registerNetworkRequestMatchCallback(this, mHandler);
-    }
-    // Sets time-out to stop scanning.
-    mHandler.sendEmptyMessageDelayed(MESSAGE_STOP_SCAN_WIFI_LIST, DELAY_TIME_STOP_SCAN_MS);
-  }
-
-  private final Handler mHandler = new Handler() {
-    @Override
-    public void handleMessage(Message msg) {
-      switch (msg.what) {
-        case MESSAGE_STOP_SCAN_WIFI_LIST:
-          removeMessages(MESSAGE_STOP_SCAN_WIFI_LIST);
-          stopScanningAndPopTimeoutDialog();
-          break;
-        default:
-          // Do nothing.
-          break;
-      }
-    }
-  };
-
-  protected void stopScanningAndPopTimeoutDialog() {
-    // Dismisses current dialog.
-    dismiss();
-
-    // Throws new timeout dialog.
-    final NetworkRequestTimeoutDialogFragment fragment = NetworkRequestTimeoutDialogFragment
-        .newInstance();
-    fragment.show(getActivity().getSupportFragmentManager(), null);
-  }
-
-  @Override
-  public int getMetricsCategory() {
-    return MetricsProto.MetricsEvent.WIFI_SCANNING_NEEDED_DIALOG;
-  }
-
-  private class AccessPointAdapter extends ArrayAdapter<AccessPoint> {
-
-    private final int mResourceId;
-    private final LayoutInflater mInflater;
-
-    public AccessPointAdapter(Context context, int resourceId, List<AccessPoint> objects) {
-      super(context, resourceId, objects);
-      mResourceId = resourceId;
-      mInflater = LayoutInflater.from(context);
+    public static NetworkRequestDialogFragment newInstance() {
+        NetworkRequestDialogFragment dialogFragment = new NetworkRequestDialogFragment();
+        return dialogFragment;
     }
 
     @Override
-    public View getView(int position, View view, ViewGroup parent) {
-      if (view == null) {
-        view = mInflater.inflate(mResourceId, parent, false);
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        final Context context = getContext();
 
-        final View divider = view.findViewById(com.android.settingslib.R.id.two_target_divider);
-        divider.setVisibility(View.GONE);
-      }
+        // Prepares title.
+        final LayoutInflater inflater = LayoutInflater.from(context);
+        final View customTitle = inflater.inflate(R.layout.network_request_dialog_title, null);
 
-      final AccessPoint accessPoint = getItem(position);
+        final TextView title = customTitle.findViewById(R.id.network_request_title_text);
+        title.setText(R.string.network_connection_request_dialog_title);
+        final ProgressBar progressBar = customTitle.findViewById(
+                R.id.network_request_title_progress);
+        progressBar.setVisibility(View.VISIBLE);
 
-      final TextView titleView = view.findViewById(android.R.id.title);
-      if (titleView != null) {
-        titleView.setText(accessPoint.getSsidStr());
-      }
+        // Prepares adapter.
+        mDialogAdapter = new AccessPointAdapter(context,
+                R.layout.preference_access_point, getAccessPointList());
 
-      final TextView summary = view.findViewById(android.R.id.summary);
-      if (summary != null) {
-        summary.setText(accessPoint.getSettingsSummary());
-      }
+        final AlertDialog.Builder builder = new AlertDialog.Builder(context)
+                .setCustomTitle(customTitle)
+                .setAdapter(mDialogAdapter, this)
+                .setPositiveButton(R.string.cancel, (dialog, which) -> getActivity().finish());
 
-      final PreferenceImageView imageView = view.findViewById(android.R.id.icon);
-      final int level = accessPoint.getLevel();
-      if (imageView != null) {
-        final Drawable drawable = getContext().getDrawable(Utils.getWifiIconResource(level));
-        drawable.setTintList(Utils.getColorAttr(getContext(), android.R.attr.colorControlNormal));
-        imageView.setImageDrawable(drawable);
-      }
-
-      return view;
-    }
-  }
-
-  @Override
-  public void onAbort() {
-    // TODO(b/117399926): We should have a UI notify user here.
-  }
-
-  @Override
-  public void onUserSelectionCallbackRegistration(
-      NetworkRequestUserSelectionCallback userSelectionCallback) {
-    mUserSelectionCallback = userSelectionCallback;
-  }
-
-  @Override
-  public void onMatch(List<ScanResult> scanResults) {
-    // TODO(b/119846365): Checks if we could escalate the converting effort.
-    // Converts ScanResult to WifiConfiguration.
-    List<WifiConfiguration> wifiConfigurations = null;
-    final WifiManager wifiManager = getContext().getApplicationContext()
-        .getSystemService(WifiManager.class);
-    if (wifiManager != null) {
-      wifiConfigurations = wifiManager.getAllMatchingWifiConfigs(scanResults);
+        // Clicking list item is to connect wifi ap.
+        final AlertDialog dialog = builder.create();
+        dialog.getListView()
+                .setOnItemClickListener(
+                        (parent, view, position, id) -> this.onClick(dialog, position));
+        return dialog;
     }
 
-    setUpAccessPointList(wifiConfigurations);
-
-    if (getDialogAdapter() != null) {
-      getDialogAdapter().notifyDataSetChanged();
-    }
-  }
-
-  @Override
-  public void onUserSelectionConnectSuccess(WifiConfiguration wificonfiguration) {
-    if (getDialogAdapter() != null) {
-      updateAccessPointListItem(wificonfiguration);
-      getDialogAdapter().notifyDataSetChanged();
-    }
-  }
-
-  @Override
-  public void onUserSelectionConnectFailure(WifiConfiguration wificonfiguration) {
-    if (mDialogAdapter != null) {
-      updateAccessPointListItem(wificonfiguration);
-      getDialogAdapter().notifyDataSetChanged();
-    }
-  }
-
-  private void updateAccessPointListItem(WifiConfiguration wificonfiguration) {
-    if (wificonfiguration == null) {
-      return;
+    @NonNull
+    List<AccessPoint> getAccessPointList() {
+        // Initials list for adapter, in case of display crashing.
+        if (mAccessPointList == null) {
+            mAccessPointList = new ArrayList<>();
+        }
+        return mAccessPointList;
     }
 
-    final List<AccessPoint> accessPointList = getAccessPointList();
-    final int accessPointListSize = accessPointList.size();
-
-    for (int i = 0; i < accessPointListSize; i++) {
-      AccessPoint accessPoint = accessPointList.get(i);
-      // It is the same AccessPoint SSID, and should be replaced to update latest properties.
-      if (accessPoint.matches(wificonfiguration)) {
-        accessPointList.set(i, new AccessPoint(getContext(), wificonfiguration));
-        break;
-      }
-    }
-  }
-
-  private void setUpAccessPointList(List<WifiConfiguration> wifiConfigurations) {
-    // Grants for zero size input, since maybe current wifi is off or somethings are wrong.
-    if (wifiConfigurations == null) {
-      return;
+    private BaseAdapter getDialogAdapter() {
+        return mDialogAdapter;
     }
 
-    final List<AccessPoint> accessPointList = getAccessPointList();
-    accessPointList.clear();
-    for (WifiConfiguration config : wifiConfigurations) {
-      accessPointList.add(new AccessPoint(getContext(), config));
+    @Override
+    public void onClick(DialogInterface dialog, int which) {
+        final List<AccessPoint> accessPointList = getAccessPointList();
+        if (accessPointList.size() == 0) {
+            return;  // Invalid values.
+        }
+        if (mUserSelectionCallback == null) {
+            return; // Callback is missing or not ready.
+        }
+
+        if (which < accessPointList.size()) {
+            WifiConfiguration wifiConfig = accessPointList.get(which).getConfig();
+            mUserSelectionCallback.select(wifiConfig);
+        }
     }
-  }
-}
\ No newline at end of file
+
+    @Override
+    public void onCancel(@NonNull DialogInterface dialog) {
+        super.onCancel(dialog);
+        // Finishes activity when user clicks back key or outside of dialog.
+        getActivity().finish();
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+
+        mHandler.removeMessages(MESSAGE_STOP_SCAN_WIFI_LIST);
+        final WifiManager wifiManager = getContext().getApplicationContext()
+                .getSystemService(WifiManager.class);
+        if (wifiManager != null) {
+            wifiManager.unregisterNetworkRequestMatchCallback(this);
+        }
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+
+        final WifiManager wifiManager = getContext().getApplicationContext()
+                .getSystemService(WifiManager.class);
+        if (wifiManager != null) {
+            wifiManager.registerNetworkRequestMatchCallback(this, mHandler);
+        }
+        // Sets time-out to stop scanning.
+        mHandler.sendEmptyMessageDelayed(MESSAGE_STOP_SCAN_WIFI_LIST, DELAY_TIME_STOP_SCAN_MS);
+    }
+
+    private final Handler mHandler = new Handler() {
+        @Override
+        public void handleMessage(Message msg) {
+            switch (msg.what) {
+                case MESSAGE_STOP_SCAN_WIFI_LIST:
+                    removeMessages(MESSAGE_STOP_SCAN_WIFI_LIST);
+                    stopScanningAndPopTimeoutDialog();
+                    break;
+                default:
+                    // Do nothing.
+                    break;
+            }
+        }
+    };
+
+    protected void stopScanningAndPopTimeoutDialog() {
+        // Dismisses current dialog.
+        dismiss();
+
+        // Throws new timeout dialog.
+        final NetworkRequestTimeoutDialogFragment fragment = NetworkRequestTimeoutDialogFragment
+                .newInstance();
+        fragment.show(getActivity().getSupportFragmentManager(), null);
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        return MetricsProto.MetricsEvent.WIFI_SCANNING_NEEDED_DIALOG;
+    }
+
+    private class AccessPointAdapter extends ArrayAdapter<AccessPoint> {
+
+        private final int mResourceId;
+        private final LayoutInflater mInflater;
+
+        public AccessPointAdapter(Context context, int resourceId, List<AccessPoint> objects) {
+            super(context, resourceId, objects);
+            mResourceId = resourceId;
+            mInflater = LayoutInflater.from(context);
+        }
+
+        @Override
+        public View getView(int position, View view, ViewGroup parent) {
+            if (view == null) {
+                view = mInflater.inflate(mResourceId, parent, false);
+
+                final View divider = view.findViewById(
+                        com.android.settingslib.R.id.two_target_divider);
+                divider.setVisibility(View.GONE);
+            }
+
+            final AccessPoint accessPoint = getItem(position);
+
+            final TextView titleView = view.findViewById(android.R.id.title);
+            if (titleView != null) {
+                titleView.setText(accessPoint.getSsidStr());
+            }
+
+            final TextView summary = view.findViewById(android.R.id.summary);
+            if (summary != null) {
+                summary.setText(accessPoint.getSettingsSummary());
+            }
+
+            final PreferenceImageView imageView = view.findViewById(android.R.id.icon);
+            final int level = accessPoint.getLevel();
+            if (imageView != null) {
+                final Drawable drawable = getContext().getDrawable(
+                        Utils.getWifiIconResource(level));
+                drawable.setTintList(
+                        Utils.getColorAttr(getContext(), android.R.attr.colorControlNormal));
+                imageView.setImageDrawable(drawable);
+            }
+
+            return view;
+        }
+    }
+
+    @Override
+    public void onAbort() {
+        // TODO(b/117399926): We should have a UI notify user here.
+    }
+
+    @Override
+    public void onUserSelectionCallbackRegistration(
+            NetworkRequestUserSelectionCallback userSelectionCallback) {
+        mUserSelectionCallback = userSelectionCallback;
+    }
+
+    @Override
+    public void onMatch(List<ScanResult> scanResults) {
+        // TODO(b/119846365): Checks if we could escalate the converting effort.
+        // Converts ScanResult to WifiConfiguration.
+        List<WifiConfiguration> wifiConfigurations = null;
+        final WifiManager wifiManager = getContext().getApplicationContext()
+                .getSystemService(WifiManager.class);
+        if (wifiManager != null) {
+            wifiConfigurations = wifiManager.getAllMatchingWifiConfigs(scanResults);
+        }
+
+        setUpAccessPointList(wifiConfigurations);
+
+        if (getDialogAdapter() != null) {
+            getDialogAdapter().notifyDataSetChanged();
+        }
+    }
+
+    @Override
+    public void onUserSelectionConnectSuccess(WifiConfiguration wificonfiguration) {
+        if (getDialogAdapter() != null) {
+            updateAccessPointListItem(wificonfiguration);
+            getDialogAdapter().notifyDataSetChanged();
+        }
+    }
+
+    @Override
+    public void onUserSelectionConnectFailure(WifiConfiguration wificonfiguration) {
+        if (mDialogAdapter != null) {
+            updateAccessPointListItem(wificonfiguration);
+            getDialogAdapter().notifyDataSetChanged();
+        }
+    }
+
+    private void updateAccessPointListItem(WifiConfiguration wificonfiguration) {
+        if (wificonfiguration == null) {
+            return;
+        }
+
+        final List<AccessPoint> accessPointList = getAccessPointList();
+        final int accessPointListSize = accessPointList.size();
+
+        for (int i = 0; i < accessPointListSize; i++) {
+            AccessPoint accessPoint = accessPointList.get(i);
+            // It is the same AccessPoint SSID, and should be replaced to update latest properties.
+            if (accessPoint.matches(wificonfiguration)) {
+                accessPointList.set(i, new AccessPoint(getContext(), wificonfiguration));
+                break;
+            }
+        }
+    }
+
+    private void setUpAccessPointList(List<WifiConfiguration> wifiConfigurations) {
+        // Grants for zero size input, since maybe current wifi is off or somethings are wrong.
+        if (wifiConfigurations == null) {
+            return;
+        }
+
+        final List<AccessPoint> accessPointList = getAccessPointList();
+        accessPointList.clear();
+        for (WifiConfiguration config : wifiConfigurations) {
+            accessPointList.add(new AccessPoint(getContext(), config));
+        }
+    }
+}
diff --git a/tests/robotests/src/com/android/settings/wifi/NetworkRequestDialogActivityTest.java b/tests/robotests/src/com/android/settings/wifi/NetworkRequestDialogActivityTest.java
new file mode 100644
index 0000000..4889c83
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/wifi/NetworkRequestDialogActivityTest.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2018 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
+ */
+
+package com.android.settings.wifi;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import androidx.appcompat.app.AlertDialog;
+
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+import com.android.settings.testutils.shadow.SettingsShadowResourcesImpl;
+import com.android.settings.testutils.shadow.ShadowAlertDialogCompat;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.Robolectric;
+import org.robolectric.annotation.Config;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(shadows = {
+        ShadowAlertDialogCompat.class,
+        SettingsShadowResourcesImpl.class
+})
+public class NetworkRequestDialogActivityTest {
+
+    @Test
+    public void LaunchActivity_shouldShowNetworkRequestDialog() {
+        NetworkRequestDialogActivity activity = Robolectric
+                .setupActivity(NetworkRequestDialogActivity.class);
+
+        AlertDialog alertDialog = ShadowAlertDialogCompat.getLatestAlertDialog();
+
+        assertThat(alertDialog.isShowing()).isTrue();
+    }
+}