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