Subtext of "Add device" should only show when BT is off

Bug: 73960246 Test: Manual test & make RunSettingsRoboTests Change-Id: I6eb5fbed20a4ffc923faf992bbf0b30a817444a0
2018-03-27 11:05:56 +08:00
parent d6e81ab51b
commit 41e02a9489
3 changed files with 232 additions and 1 deletions
--- a/src/com/android/settings/connecteddevice/AddDevicePreferenceController.java
+++ b/src/com/android/settings/connecteddevice/AddDevicePreferenceController.java
@@ -0,0 +1,98 @@
+/*
+ * 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.connecteddevice;
+
+import android.bluetooth.BluetoothAdapter;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.pm.PackageManager;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+
+import com.android.settings.core.BasePreferenceController;
+import com.android.settings.R;
+import com.android.settingslib.core.lifecycle.LifecycleObserver;
+import com.android.settingslib.core.lifecycle.events.OnStart;
+import com.android.settingslib.core.lifecycle.events.OnStop;
+
+/**
+ * Controller to maintain the {@link android.support.v7.preference.Preference} for add
+ * device. It monitor Bluetooth's status(on/off) and decide if need to show summary or not.
+ */
+public class AddDevicePreferenceController extends BasePreferenceController
+        implements LifecycleObserver, OnStart, OnStop {
+
+    private static final String KEY = "add_bt_devices";
+
+    private Preference mPreference;
+    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            updateState();
+        }
+    };
+    private IntentFilter mIntentFilter;
+    private BluetoothAdapter mBluetoothAdapter;
+
+    public AddDevicePreferenceController(Context context) {
+        super(context, KEY);
+        mIntentFilter = new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED);
+        mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
+    }
+
+    @Override
+    public void onStart() {
+        mContext.registerReceiver(mReceiver, mIntentFilter);
+    }
+
+    @Override
+    public void onStop() {
+        mContext.unregisterReceiver(mReceiver);
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        if (isAvailable()) {
+            mPreference = (Preference) screen.findPreference(getPreferenceKey());
+        }
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH)
+                ? AVAILABLE
+                : DISABLED_UNSUPPORTED;
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY;
+    }
+
+    @Override
+    public CharSequence getSummary() {
+        return mBluetoothAdapter != null && mBluetoothAdapter.isEnabled()
+                ? ""
+                : mContext.getString(R.string.connected_device_add_device_summary);
+    }
+
+    void updateState() {
+        updateState(mPreference);
+    }
+}