130 lines
4.6 KiB
Java
130 lines
4.6 KiB
Java
/*
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* Copyright (C) 2015 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.example.android.bluetoothadvertisements;
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import android.bluetooth.BluetoothAdapter;
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import android.bluetooth.BluetoothManager;
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import android.content.Context;
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import android.content.Intent;
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import android.os.Bundle;
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import android.support.v4.app.FragmentActivity;
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import android.support.v4.app.FragmentTransaction;
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import android.widget.TextView;
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import android.widget.Toast;
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/**
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* Setup display fragments and ensure the device supports Bluetooth.
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*/
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public class MainActivity extends FragmentActivity {
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private BluetoothAdapter mBluetoothAdapter;
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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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setContentView(R.layout.activity_main);
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setTitle(R.string.activity_main_title);
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if (savedInstanceState == null) {
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mBluetoothAdapter = ((BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE))
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.getAdapter();
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// Is Bluetooth supported on this device?
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if (mBluetoothAdapter != null) {
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// Is Bluetooth turned on?
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if (mBluetoothAdapter.isEnabled()) {
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// Are Bluetooth Advertisements supported on this device?
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if (mBluetoothAdapter.isMultipleAdvertisementSupported()) {
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// Everything is supported and enabled, load the fragments.
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setupFragments();
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} else {
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// Bluetooth Advertisements are not supported.
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showErrorText(R.string.bt_ads_not_supported);
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}
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} else {
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// Prompt user to turn on Bluetooth (logic continues in onActivityResult()).
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Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
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startActivityForResult(enableBtIntent, Constants.REQUEST_ENABLE_BT);
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}
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} else {
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// Bluetooth is not supported.
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showErrorText(R.string.bt_not_supported);
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}
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}
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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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super.onActivityResult(requestCode, resultCode, data);
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switch (requestCode) {
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case Constants.REQUEST_ENABLE_BT:
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if (resultCode == RESULT_OK) {
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// Bluetooth is now Enabled, are Bluetooth Advertisements supported on
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// this device?
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if (mBluetoothAdapter.isMultipleAdvertisementSupported()) {
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// Everything is supported and enabled, load the fragments.
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setupFragments();
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} else {
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// Bluetooth Advertisements are not supported.
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showErrorText(R.string.bt_ads_not_supported);
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}
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} else {
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// User declined to enable Bluetooth, exit the app.
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Toast.makeText(this, R.string.bt_not_enabled_leaving,
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Toast.LENGTH_SHORT).show();
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finish();
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}
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default:
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super.onActivityResult(requestCode, resultCode, data);
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}
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}
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private void setupFragments() {
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FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
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ScannerFragment scannerFragment = new ScannerFragment();
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// Fragments can't access system services directly, so pass it the BluetoothAdapter
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scannerFragment.setBluetoothAdapter(mBluetoothAdapter);
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transaction.replace(R.id.scanner_fragment_container, scannerFragment);
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AdvertiserFragment advertiserFragment = new AdvertiserFragment();
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transaction.replace(R.id.advertiser_fragment_container, advertiserFragment);
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transaction.commit();
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}
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private void showErrorText(int messageId) {
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TextView view = (TextView) findViewById(R.id.error_textview);
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view.setText(getString(messageId));
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}
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} |