291 lines
10 KiB
Java
291 lines
10 KiB
Java
/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.bluetooth;
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import android.bluetooth.BluetoothAdapter;
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import android.bluetooth.BluetoothDevice;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.DialogInterface;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.content.SharedPreferences;
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import android.os.Bundle;
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import android.util.Log;
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import android.view.View;
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import android.widget.TextView;
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import com.android.internal.app.AlertActivity;
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import com.android.internal.app.AlertController;
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import com.android.settings.R;
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/**
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* RequestPermissionActivity asks the user whether to enable discovery. This is
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* usually started by an application wanted to start bluetooth and or discovery
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*/
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public class RequestPermissionActivity extends AlertActivity implements
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DialogInterface.OnClickListener {
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// Command line to test this
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// adb shell am start -a android.bluetooth.adapter.action.REQUEST_ENABLE
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// adb shell am start -a android.bluetooth.adapter.action.REQUEST_DISCOVERABLE
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private static final String TAG = "RequestPermissionActivity";
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private static final int MAX_DISCOVERABLE_TIMEOUT = 300;
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// Result code: Error
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public static final int RESULT_ERROR = -2;
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// Result code: User rejected the request
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public static final int RESULT_USER_DENIED = -1;
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// Non-error return code: BT is starting or has started successfully. Used
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// by this Activity and RequestPermissionHelperActivity
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/* package */ static final int RESULT_BT_STARTING_OR_STARTED = -1000;
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private static final int REQUEST_CODE_START_BT = 1;
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private LocalBluetoothManager mLocalManager;
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private int mTimeout = BluetoothDiscoverableEnabler.DEFAULT_DISCOVERABLE_TIMEOUT;
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/*
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* True if bluetooth wasn't enabled and RequestPermissionHelperActivity was
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* started to ask the user and start bt.
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*
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* If/when that activity returns successfully, display please wait msg then
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* go away when bt has started and discovery mode has been enabled.
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*/
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private boolean mNeededToEnableBluetooth;
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// True if requesting BT to be turned on
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// False if requesting BT to be turned on + discoverable mode
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private boolean mEnableOnly = false;
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private boolean mUserConfirmed = false;
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private BroadcastReceiver mReceiver = new BroadcastReceiver() {
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@Override
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public void onReceive(Context context, Intent intent) {
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if (intent == null)
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return;
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if (mNeededToEnableBluetooth
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&& BluetoothAdapter.ACTION_STATE_CHANGED.equals(intent.getAction())) {
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int state = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothDevice.ERROR);
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if (state == BluetoothAdapter.STATE_ON) {
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if (mUserConfirmed) {
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proceedAndFinish(false);
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}
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}
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}
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}
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};
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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if (parseIntent()) {
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finish();
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return;
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}
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int btState = mLocalManager.getBluetoothState();
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switch (btState) {
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case BluetoothAdapter.STATE_OFF:
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case BluetoothAdapter.STATE_TURNING_OFF:
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case BluetoothAdapter.STATE_TURNING_ON:
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/*
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* Strictly speaking STATE_TURNING_ON belong with STATE_ON;
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* however, BT may not be ready when the user clicks yes and we
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* would fail to turn on discovery mode. By kicking this to the
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* RequestPermissionHelperActivity, this class will handle that
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* case via the broadcast receiver.
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*/
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/*
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* Start the helper activity to:
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* 1) ask the user about enabling bt AND discovery
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* 2) enable BT upon confirmation
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*/
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registerReceiver(mReceiver,
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new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED));
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Intent i = new Intent();
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i.setClass(this, RequestPermissionHelperActivity.class);
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if (mEnableOnly) {
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i.setAction(RequestPermissionHelperActivity.ACTION_INTERNAL_REQUEST_BT_ON);
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} else {
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i.setAction(RequestPermissionHelperActivity.
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ACTION_INTERNAL_REQUEST_BT_ON_AND_DISCOVERABLE);
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i.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, mTimeout);
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}
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startActivityForResult(i, REQUEST_CODE_START_BT);
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mNeededToEnableBluetooth = true;
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break;
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case BluetoothAdapter.STATE_ON:
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if (mEnableOnly) {
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// Nothing to do. Already enabled.
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proceedAndFinish(false);
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return;
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} else {
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// Ask the user about enabling discovery mode
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createDialog();
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break;
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}
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}
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}
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private void createDialog() {
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final AlertController.AlertParams p = mAlertParams;
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p.mIconId = android.R.drawable.ic_dialog_info;
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p.mTitle = getString(R.string.bluetooth_permission_request);
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View view = getLayoutInflater().inflate(R.layout.bluetooth_discoverable, null);
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p.mView = view;
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TextView tv = (TextView) view.findViewById(R.id.message);
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if (mNeededToEnableBluetooth) {
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// RequestPermissionHelperActivity has gotten confirmation from user
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// to turn on BT
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tv.setText(getString(R.string.bluetooth_turning_on));
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} else {
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// Ask the user whether to turn on discovery mode or not
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tv.setText(getString(R.string.bluetooth_ask_enablement_and_discovery, mTimeout));
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p.mPositiveButtonText = getString(R.string.yes);
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p.mPositiveButtonListener = this;
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p.mNegativeButtonText = getString(R.string.no);
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p.mNegativeButtonListener = this;
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}
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setupAlert();
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}
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@Override
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protected void onActivityResult(int requestCode, int resultCode, Intent data) {
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if (requestCode != REQUEST_CODE_START_BT) {
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Log.e(TAG, "Unexpected onActivityResult " + requestCode + " " + resultCode);
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setResult(RESULT_ERROR);
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finish();
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return;
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}
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if (resultCode != RESULT_BT_STARTING_OR_STARTED) {
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setResult(resultCode);
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finish();
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}
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// Back from RequestPermissionHelperActivity. User confirmed to enable
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// BT and discoverable mode.
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mUserConfirmed = true;
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if (mLocalManager.getBluetoothState() == BluetoothAdapter.STATE_ON) {
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proceedAndFinish(false);
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} else {
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// If BT is not up yet, show "Turning on Bluetooth..."
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createDialog();
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}
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}
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public void onClick(DialogInterface dialog, int which) {
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switch (which) {
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case DialogInterface.BUTTON_POSITIVE:
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proceedAndFinish(true);
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break;
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case DialogInterface.BUTTON_NEGATIVE:
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setResult(RESULT_USER_DENIED);
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break;
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}
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}
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private void proceedAndFinish(boolean buttonPressed) {
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int returnCode;
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if (mEnableOnly) {
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// BT enabled. Done
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returnCode = 0;
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} else if (mLocalManager.getBluetoothAdapter().setScanMode(
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BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE, mTimeout)) {
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// If already in discoverable mode, this will extend the timeout.
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persistDiscoverableEndTimestamp(System.currentTimeMillis() + mTimeout * 1000);
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returnCode = mTimeout;
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} else {
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returnCode = RESULT_ERROR;
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}
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setResult(returnCode);
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if (!buttonPressed) {
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finish();
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}
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}
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private boolean parseIntent() {
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Intent intent = getIntent();
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if (intent != null && intent.getAction().equals(BluetoothAdapter.ACTION_REQUEST_ENABLE)) {
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mEnableOnly = true;
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} else if (intent != null
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&& intent.getAction().equals(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE)) {
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mTimeout = intent.getIntExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,
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BluetoothDiscoverableEnabler.DEFAULT_DISCOVERABLE_TIMEOUT);
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Log.e(TAG, "Timeout = " + mTimeout);
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if (mTimeout > MAX_DISCOVERABLE_TIMEOUT) {
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mTimeout = MAX_DISCOVERABLE_TIMEOUT;
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} else if (mTimeout <= 0) {
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mTimeout = BluetoothDiscoverableEnabler.DEFAULT_DISCOVERABLE_TIMEOUT;
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}
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} else {
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Log.e(TAG, "Error: this activity may be started only with intent "
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+ BluetoothAdapter.ACTION_REQUEST_ENABLE + " or "
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+ BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
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setResult(RESULT_ERROR);
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return true;
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}
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mLocalManager = LocalBluetoothManager.getInstance(this);
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if (mLocalManager == null) {
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Log.e(TAG, "Error: there's a problem starting bluetooth");
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setResult(RESULT_ERROR);
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return true;
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}
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return false;
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}
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@Override
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protected void onDestroy() {
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super.onDestroy();
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if (mNeededToEnableBluetooth) unregisterReceiver(mReceiver);
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}
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private void persistDiscoverableEndTimestamp(long endTimestamp) {
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SharedPreferences.Editor editor = mLocalManager.getSharedPreferences().edit();
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editor.putLong(
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BluetoothDiscoverableEnabler.SHARED_PREFERENCES_KEY_DISCOVERABLE_END_TIMESTAMP,
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endTimestamp);
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editor.commit();
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}
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@Override
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public void onBackPressed() {
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setResult(RequestPermissionActivity.RESULT_USER_DENIED);
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super.onBackPressed();
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}
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}
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