Notify user that scans are still active

Bug: 8141918
Change-Id: I115ce2ac57125b8ffbb34245dc25effd4b3bebb0

src/com/android/settings/wifi/WifiNotifyScanModeActivity.java

@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2013 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 com.android.settings.R;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.app.DialogFragment;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.location.LocationManager;
+import android.net.wifi.WifiManager;
+import android.os.Bundle;
+import android.provider.Settings;
+import android.view.View;
+import android.widget.CheckBox;
+import android.widget.CompoundButton;
+import android.widget.CompoundButton.OnCheckedChangeListener;
+
+/**
+ * This activity notifies the user that wifi scans are still available when Wi-Fi is being
+ * turned off
+ */
+public class WifiNotifyScanModeActivity extends Activity {
+    private DialogFragment mDialog;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        Intent intent = getIntent();
+        if (intent != null && intent.getAction()
+                .equals(WifiManager.ACTION_NOTIFY_SCAN_ALWAYS_AVAILABLE)) {
+            createDialog();
+        } else {
+            finish();
+            return;
+        }
+    }
+
+    private void createDialog() {
+        if (mDialog == null) {
+            mDialog = AlertDialogFragment.newInstance();
+            mDialog.show(getFragmentManager(), "dialog");
+        }
+    }
+
+    private void dismissDialog() {
+        if (mDialog != null) {
+            mDialog.dismiss();
+            mDialog = null;
+        }
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+        dismissDialog();
+    }
+
+    public void onResume() {
+        super.onResume();
+        createDialog();
+    }
+
+    void doPositiveButton(boolean checked) {
+        Settings.Global.putInt(getContentResolver(),
+                Settings.Global.WIFI_NOTIFY_SCAN_ALWAYS_AVAILABLE, checked ? 0 : 1);
+        finish();
+    }
+
+    public static class AlertDialogFragment extends DialogFragment {
+        static AlertDialogFragment newInstance() {
+            AlertDialogFragment frag = new AlertDialogFragment();
+            return frag;
+        }
+
+        public AlertDialogFragment() {
+            super();
+        }
+
+        @Override
+        public Dialog onCreateDialog(Bundle savedInstanceState) {
+            View checkBoxView = View.inflate(getActivity(), R.layout.wifi_notify_scan_mode, null);
+            final CheckBox checkBox = (CheckBox) checkBoxView.findViewById(R.id.checkbox);
+            final String msg;
+            if (Settings.Secure.isLocationProviderEnabled(getActivity().getContentResolver(),
+                    LocationManager.NETWORK_PROVIDER)) {
+                msg = getString(R.string.wifi_scan_notify_text_location_on);
+            } else {
+                msg = getString(R.string.wifi_scan_notify_text_location_off);
+            }
+            return new AlertDialog.Builder(getActivity())
+                    .setMessage(msg)
+                    .setView(checkBoxView)
+                    .setPositiveButton(R.string.dlg_ok,
+                            new DialogInterface.OnClickListener() {
+                                public void onClick(DialogInterface dialog, int whichButton) {
+                                    ((WifiNotifyScanModeActivity) getActivity()).doPositiveButton(
+                                            checkBox.isChecked());
+                                }
+                            }
+                    )
+                    .setNegativeButton(R.string.dlg_cancel,
+                            new DialogInterface.OnClickListener() {
+                                public void onClick(DialogInterface dialog, int whichButton) {
+                                    ((WifiNotifyScanModeActivity) getActivity()).finish();
+                                }
+                            }
+                    )
+                    .create();
+        }
+        @Override
+        public void onCancel(DialogInterface dialog) {
+            ((WifiNotifyScanModeActivity) getActivity()).finish();
+        }
+    }
+}