安卓APP开发工具平台,可一键将网站或网页直接制作成安卓APP,在线一键生成APK安装包
制作安卓蓝牙App的基本原理就是使用Android SDK中提供的Bluetooth API,通过蓝牙模块在设备之间建立无线通信,并实现数据传输的功能。
下面是一个简单的示例,展示如何使用Android Studio开发一个与外围蓝牙设备进行连接并发送数据的应用程序。
1. 创建新项目
在Android Studio中创建一个新的应用程序项目。在项目创建完成后,打开build.gradle文件并添加以下依赖项:
```
dependencies {
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
implementation 'com.android.support:design:28.0.0'
}
2. 布局设计
在activity_main.xml中添加两个按钮,一个用于搜索可用设备,另一个用于连接选定的设备。
android:id="@+id/button_search" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="搜索" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintHorizontal_bias="0.5" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toLeftOf="@+id/button_connect" app:layout_constraintTop_toTopOf="parent" app:layout_constraintVertical_bias="0.5" /> android:id="@+id/button_connect" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="连接" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintHorizontal_bias="0.5" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" app:layout_constraintVertical_bias="0.5" />```3. 定义Java类在MainActivity.java文件中定义两个按钮的监听器,并使用BluetoothAdapter类来搜索和连接设备。此外,也需要使用BluetoothSocket类与外围设备进行无线通信。```public class MainActivity extends AppCompatActivity { private final static int REQUEST_ENABLE_BT = 1; private BluetoothAdapter bluetoothAdapter; private Set pairedDevices; private ArrayAdapter devicesArrayAdapter; private ListView listView; private BluetoothDevice selectedDevice; private BluetoothSocket mmSocket; private OutputStream mmOutputStream; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); listView = findViewById(R.id.listView); checkBluetoothState(); // 设置搜索按钮监听器 Button searchButton = (Button) findViewById(R.id.button_search); searchButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { discoverDevices(); } }); // 设置连接按钮监听器 Button connectButton = (Button) findViewById(R.id.button_connect); connectButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { connectToDevice(selectedDevice); } }); } private void checkBluetoothState() { bluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); if (bluetoothAdapter == null) { Toast.makeText(this, "蓝牙不可用", Toast.LENGTH_SHORT).show(); finish(); } else { if (!bluetoothAdapter.isEnabled()) { Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(enableIntent, REQUEST_ENABLE_BT); } } } private void discoverDevices() { if (bluetoothAdapter.isDiscovering()) { bluetoothAdapter.cancelDiscovery(); } bluetoothAdapter.startDiscovery(); BroadcastReceiver discoveryResult = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if (BluetoothDevice.ACTION_FOUND.equals(action)) { BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); devicesArrayAdapter.add(device.getName() + "\n" + device.getAddress()); } } }; IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND); registerReceiver(discoveryResult, filter); devicesArrayAdapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1); listView.setAdapter(devicesArrayAdapter); } private void connectToDevice(BluetoothDevice device) { UUID uuid = UUID.fromString("00001101-0000-1000-8000-00805f9b34fb"); try { mmSocket = device.createRfcommSocketToServiceRecord(uuid); mmSocket.connect(); mmOutputStream = mmSocket.getOutputStream(); } catch (IOException e) { e.printStackTrace(); } }}```4. 在Manifest文件中添加蓝牙权限``````5. 运行和测试在运行和测试你的应用程序之前,请确保你的Android设备已启用蓝牙,以及附近有其他蓝牙设备可供连接。结论:通过这个简单的示例,你可以了解到制作安卓蓝牙App的基础知识,并且可以通过使用Android SDK中提供的各种类和API,自己设计出更加强大的应用程序。
android:id="@+id/button_search"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="搜索"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toLeftOf="@+id/button_connect"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.5" />
android:id="@+id/button_connect" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="连接" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintHorizontal_bias="0.5" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" app:layout_constraintVertical_bias="0.5" />```3. 定义Java类在MainActivity.java文件中定义两个按钮的监听器,并使用BluetoothAdapter类来搜索和连接设备。此外,也需要使用BluetoothSocket类与外围设备进行无线通信。```public class MainActivity extends AppCompatActivity { private final static int REQUEST_ENABLE_BT = 1; private BluetoothAdapter bluetoothAdapter; private Set pairedDevices; private ArrayAdapter devicesArrayAdapter; private ListView listView; private BluetoothDevice selectedDevice; private BluetoothSocket mmSocket; private OutputStream mmOutputStream; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); listView = findViewById(R.id.listView); checkBluetoothState(); // 设置搜索按钮监听器 Button searchButton = (Button) findViewById(R.id.button_search); searchButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { discoverDevices(); } }); // 设置连接按钮监听器 Button connectButton = (Button) findViewById(R.id.button_connect); connectButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { connectToDevice(selectedDevice); } }); } private void checkBluetoothState() { bluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); if (bluetoothAdapter == null) { Toast.makeText(this, "蓝牙不可用", Toast.LENGTH_SHORT).show(); finish(); } else { if (!bluetoothAdapter.isEnabled()) { Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(enableIntent, REQUEST_ENABLE_BT); } } } private void discoverDevices() { if (bluetoothAdapter.isDiscovering()) { bluetoothAdapter.cancelDiscovery(); } bluetoothAdapter.startDiscovery(); BroadcastReceiver discoveryResult = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if (BluetoothDevice.ACTION_FOUND.equals(action)) { BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); devicesArrayAdapter.add(device.getName() + "\n" + device.getAddress()); } } }; IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND); registerReceiver(discoveryResult, filter); devicesArrayAdapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1); listView.setAdapter(devicesArrayAdapter); } private void connectToDevice(BluetoothDevice device) { UUID uuid = UUID.fromString("00001101-0000-1000-8000-00805f9b34fb"); try { mmSocket = device.createRfcommSocketToServiceRecord(uuid); mmSocket.connect(); mmOutputStream = mmSocket.getOutputStream(); } catch (IOException e) { e.printStackTrace(); } }}```4. 在Manifest文件中添加蓝牙权限``````5. 运行和测试在运行和测试你的应用程序之前,请确保你的Android设备已启用蓝牙,以及附近有其他蓝牙设备可供连接。结论:通过这个简单的示例,你可以了解到制作安卓蓝牙App的基础知识,并且可以通过使用Android SDK中提供的各种类和API,自己设计出更加强大的应用程序。
android:id="@+id/button_connect"
android:text="连接"
app:layout_constraintRight_toRightOf="parent"
3. 定义Java类
在MainActivity.java文件中定义两个按钮的监听器,并使用BluetoothAdapter类来搜索和连接设备。此外,也需要使用BluetoothSocket类与外围设备进行无线通信。
public class MainActivity extends AppCompatActivity {
private final static int REQUEST_ENABLE_BT = 1;
private BluetoothAdapter bluetoothAdapter;
private Set pairedDevices;
private ArrayAdapter devicesArrayAdapter;
private ListView listView;
private BluetoothDevice selectedDevice;
private BluetoothSocket mmSocket;
private OutputStream mmOutputStream;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = findViewById(R.id.listView);
checkBluetoothState();
// 设置搜索按钮监听器
Button searchButton = (Button) findViewById(R.id.button_search);
searchButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
discoverDevices();
});
// 设置连接按钮监听器
Button connectButton = (Button) findViewById(R.id.button_connect);
connectButton.setOnClickListener(new View.OnClickListener() {
connectToDevice(selectedDevice);
private void checkBluetoothState() {
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (bluetoothAdapter == null) {
Toast.makeText(this, "蓝牙不可用", Toast.LENGTH_SHORT).show();
finish();
} else {
if (!bluetoothAdapter.isEnabled()) {
Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableIntent, REQUEST_ENABLE_BT);
private void discoverDevices() {
if (bluetoothAdapter.isDiscovering()) {
bluetoothAdapter.cancelDiscovery();
bluetoothAdapter.startDiscovery();
BroadcastReceiver discoveryResult = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
devicesArrayAdapter.add(device.getName() + "\n" + device.getAddress());
};
IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
registerReceiver(discoveryResult, filter);
devicesArrayAdapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1);
listView.setAdapter(devicesArrayAdapter);
private void connectToDevice(BluetoothDevice device) {
UUID uuid = UUID.fromString("00001101-0000-1000-8000-00805f9b34fb");
try {
mmSocket = device.createRfcommSocketToServiceRecord(uuid);
mmSocket.connect();
mmOutputStream = mmSocket.getOutputStream();
} catch (IOException e) {
e.printStackTrace();
4. 在Manifest文件中添加蓝牙权限
5. 运行和测试
在运行和测试你的应用程序之前,请确保你的Android设备已启用蓝牙,以及附近有其他蓝牙设备可供连接。
结论:通过这个简单的示例,你可以了解到制作安卓蓝牙App的基础知识,并且可以通过使用Android SDK中提供的各种类和API,自己设计出更加强大的应用程序。