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352 lines
16 KiB
Java
352 lines
16 KiB
Java
package com.rehome.dywoa.bleUtil;
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import android.Manifest;
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import android.app.Service;
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import android.bluetooth.BluetoothAdapter;
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import android.bluetooth.BluetoothDevice;
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import android.bluetooth.BluetoothGatt;
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import android.bluetooth.BluetoothGattCallback;
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import android.bluetooth.BluetoothGattCharacteristic;
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import android.bluetooth.BluetoothGattService;
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import android.bluetooth.BluetoothManager;
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import android.bluetooth.BluetoothProfile;
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import android.content.Context;
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import android.content.Intent;
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import android.content.pm.PackageManager;
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import android.os.Binder;
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import android.os.IBinder;
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import android.util.Log;
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import androidx.core.app.ActivityCompat;
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import androidx.localbroadcastmanager.content.LocalBroadcastManager;
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import java.util.List;
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import java.util.UUID;
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public class BluetoothLeService extends Service {
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private final static String TAG = BluetoothLeService.class.getSimpleName();
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private BluetoothManager mBluetoothManager;
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private BluetoothAdapter mBluetoothAdapter;
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private String mBluetoothDeviceAddress;
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private BluetoothGatt mBluetoothGatt;
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private int mConnectionState = STATE_DISCONNECTED;
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private static final int STATE_DISCONNECTED = 0;
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private static final int STATE_CONNECTING = 1;
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private static final int STATE_CONNECTED = 2;
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public final static String ACTION_GATT_CONNECTED =
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"com.example.bluetooth.le.ACTION_GATT_CONNECTED";
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public final static String ACTION_GATT_DISCONNECTED =
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"com.example.bluetooth.le.ACTION_GATT_DISCONNECTED";
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public final static String ACTION_GATT_SERVICES_DISCOVERED =
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"com.example.bluetooth.le.ACTION_GATT_SERVICES_DISCOVERED";
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public final static String ACTION_DATA_AVAILABLE =
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"com.example.bluetooth.le.ACTION_DATA_AVAILABLE";
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public final static String EXTRA_DATA =
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"com.example.bluetooth.le.EXTRA_DATA";
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// Implements callback methods for GATT events that the app cares about. For example,
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// connection change and services discovered.
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private final BluetoothGattCallback mGattCallback = new BluetoothGattCallback() {
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@Override
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public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
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String intentAction;
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if (newState == BluetoothProfile.STATE_CONNECTED) {
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intentAction = ACTION_GATT_CONNECTED;
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mConnectionState = STATE_CONNECTED;
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broadcastUpdate(intentAction);
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Log.i(TAG, "Connected to GATT server.");
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// Attempts to discover services after successful connection.
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if (ActivityCompat.checkSelfPermission(BluetoothLeService.this, Manifest.permission.BLUETOOTH_CONNECT) != PackageManager.PERMISSION_GRANTED) {
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// TODO: Consider calling
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// ActivityCompat#requestPermissions
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// here to request the missing permissions, and then overriding
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// public void onRequestPermissionsResult(int requestCode, String[] permissions,
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// int[] grantResults)
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// to handle the case where the user grants the permission. See the documentation
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// for ActivityCompat#requestPermissions for more details.
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return;
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}
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Log.i(TAG, "Attempting to start service discovery:" +
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mBluetoothGatt.discoverServices());
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} else if (newState == BluetoothProfile.STATE_DISCONNECTED) {
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intentAction = ACTION_GATT_DISCONNECTED;
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mConnectionState = STATE_DISCONNECTED;
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Log.i(TAG, "Disconnected from GATT server.");
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broadcastUpdate(intentAction);
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}
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}
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@Override
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public void onServicesDiscovered(BluetoothGatt gatt, int status) {
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if (status == BluetoothGatt.GATT_SUCCESS) {
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broadcastUpdate(ACTION_GATT_SERVICES_DISCOVERED);
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////tsp默认选择一个地址
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BluetoothGattCharacteristic characteristic1=
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gatt.getService(UUID.fromString("0000ffe0-0000-1000-8000-00805f9b34fb")).getCharacteristic(UUID.fromString("0000ffe4-0000-1000-8000-00805f9b34fb"));
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setCharacteristicNotification(characteristic1,true);
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} else {
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Log.w(TAG, "onServicesDiscovered received: " + status);
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}
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}
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@Override
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public void onCharacteristicRead(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic, int status) {
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if (status == BluetoothGatt.GATT_SUCCESS) {
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broadcastUpdate(ACTION_DATA_AVAILABLE, characteristic);
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}
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}
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@Override
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public void onCharacteristicChanged(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic) {
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broadcastUpdate(ACTION_DATA_AVAILABLE, characteristic);
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}
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@Override
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public void onCharacteristicWrite (BluetoothGatt gatt, BluetoothGattCharacteristic characteristic, int status){
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}
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};
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private void broadcastUpdate(final String action) {
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final Intent intent = new Intent(action);
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LocalBroadcastManager.getInstance(BluetoothLeService.this).sendBroadcast(intent);
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}
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//收到数据后，触发广播
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private void broadcastUpdate(final String action, final BluetoothGattCharacteristic characteristic) {
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final Intent intent = new Intent(action);
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// For all other profiles, writes the data formatted in HEX.
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final byte[] data = characteristic.getValue();
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if (data != null && data.length > 0) {
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final StringBuilder stringBuilder = new StringBuilder(data.length);
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for(byte byteChar : data)
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stringBuilder.append(String.format("%02X ", byteChar));
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intent.putExtra(EXTRA_DATA, new String(data) + "\n" + stringBuilder.toString());
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}
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LocalBroadcastManager.getInstance(BluetoothLeService.this).sendBroadcast(intent);
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}
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public class LocalBinder extends Binder {
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public BluetoothLeService getService() {
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return BluetoothLeService.this;
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}
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}
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@Override
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public IBinder onBind(Intent intent) {
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return mBinder;
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}
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@Override
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public boolean onUnbind(Intent intent) {
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// After using a given device, you should make sure that BluetoothGatt.close() is called
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// such that resources are cleaned up properly. In this particular example, close() is
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// invoked when the UI is disconnected from the Service.
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// close();
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return super.onUnbind(intent);
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}
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private final IBinder mBinder = new LocalBinder();
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/**
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* Initializes a reference to the local Bluetooth adapter.
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*
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* @return Return true if the initialization is successful.
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*/
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public boolean initialize() {
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// For API level 18 and above, get a reference to BluetoothAdapter through
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// BluetoothManager.
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if (mBluetoothManager == null) {
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mBluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
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if (mBluetoothManager == null) {
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Log.e(TAG, "Unable to initialize BluetoothManager.");
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return false;
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}
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}
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mBluetoothAdapter = mBluetoothManager.getAdapter();
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if (mBluetoothAdapter == null) {
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Log.e(TAG, "Unable to obtain a BluetoothAdapter.");
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return false;
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}
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return true;
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}
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/**
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* Connects to the GATT server hosted on the Bluetooth LE device.
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*
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* @param address The device address of the destination device.
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*
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* @return Return true if the connection is initiated successfully. The connection result
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* is reported asynchronously through the
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* {@code BluetoothGattCallback#onConnectionStateChange(android.bluetooth.BluetoothGatt, int, int)}
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* callback.
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*/
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public boolean connect(final String address) {//连接设备
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if (mBluetoothAdapter == null || address == null) {
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Log.w(TAG, "BluetoothAdapter not initialized or unspecified address.");
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return false;
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}
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// Previously connected device. Try to reconnect.
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if (mBluetoothDeviceAddress != null && address.equals(mBluetoothDeviceAddress)&& mBluetoothGatt != null) {
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Log.d(TAG, "Trying to use an existing mBluetoothGatt for connection.");
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if (ActivityCompat.checkSelfPermission(this, Manifest.permission.BLUETOOTH_CONNECT) != PackageManager.PERMISSION_GRANTED) {
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// TODO: Consider calling
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// ActivityCompat#requestPermissions
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// here to request the missing permissions, and then overriding
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// public void onRequestPermissionsResult(int requestCode, String[] permissions,
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// int[] grantResults)
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// to handle the case where the user grants the permission. See the documentation
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// for ActivityCompat#requestPermissions for more details.
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return false;
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}
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if (mBluetoothGatt.connect()) {
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mConnectionState = STATE_CONNECTING;
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return true;
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} else {
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return false;
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}
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}
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final BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address);
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if (device == null) {
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Log.w(TAG, "Device not found. Unable to connect.");
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return false;
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}
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// We want to directly connect to the device, so we are setting the autoConnect
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// parameter to false.
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mBluetoothGatt = device.connectGatt(this, false, mGattCallback);
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Log.d(TAG, "Trying to create a new connection.");
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mBluetoothDeviceAddress = address;
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mConnectionState = STATE_CONNECTING;
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return true;
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}
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/**
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* Disconnects an existing connection or cancel a pending connection. The disconnection result
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* is reported asynchronously through the
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* {@code BluetoothGattCallback#onConnectionStateChange(android.bluetooth.BluetoothGatt, int, int)}
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* callback.
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*/
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public void disconnect() {
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if (mBluetoothAdapter == null || mBluetoothGatt == null) {
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Log.w(TAG, "BluetoothAdapter not initialized");
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return;
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}
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if (ActivityCompat.checkSelfPermission(this, Manifest.permission.BLUETOOTH_CONNECT) != PackageManager.PERMISSION_GRANTED) {
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// TODO: Consider calling
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// ActivityCompat#requestPermissions
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// here to request the missing permissions, and then overriding
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// public void onRequestPermissionsResult(int requestCode, String[] permissions,
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// int[] grantResults)
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// to handle the case where the user grants the permission. See the documentation
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// for ActivityCompat#requestPermissions for more details.
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return;
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}
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mBluetoothGatt.disconnect();
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}
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/**
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* After using a given BLE device, the app must call this method to ensure resources are
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* released properly.
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*/
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public void close() {
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if (mBluetoothGatt == null) {
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return;
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}
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if (ActivityCompat.checkSelfPermission(this, Manifest.permission.BLUETOOTH_CONNECT) != PackageManager.PERMISSION_GRANTED) {
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// TODO: Consider calling
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// ActivityCompat#requestPermissions
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// here to request the missing permissions, and then overriding
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// public void onRequestPermissionsResult(int requestCode, String[] permissions,
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// int[] grantResults)
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// to handle the case where the user grants the permission. See the documentation
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// for ActivityCompat#requestPermissions for more details.
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return;
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}
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mBluetoothGatt.close();
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mBluetoothGatt = null;
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}
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/**
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* Request a read on a given {@code BluetoothGattCharacteristic}. The read result is reported
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* asynchronously through the {@code BluetoothGattCallback#onCharacteristicRead(android.bluetooth.BluetoothGatt, android.bluetooth.BluetoothGattCharacteristic, int)}
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* callback.
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*
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* @param characteristic The characteristic to read from.
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*/
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public void readCharacteristic(BluetoothGattCharacteristic characteristic) {
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if (mBluetoothAdapter == null || mBluetoothGatt == null) {
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Log.w(TAG, "BluetoothAdapter not initialized");
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return;
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}
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if (ActivityCompat.checkSelfPermission(this, Manifest.permission.BLUETOOTH_CONNECT) != PackageManager.PERMISSION_GRANTED) {
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// TODO: Consider calling
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// ActivityCompat#requestPermissions
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// here to request the missing permissions, and then overriding
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// public void onRequestPermissionsResult(int requestCode, String[] permissions,
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// int[] grantResults)
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// to handle the case where the user grants the permission. See the documentation
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// for ActivityCompat#requestPermissions for more details.
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return;
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}
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mBluetoothGatt.readCharacteristic(characteristic);
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}
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public void writeCharacteristic(BluetoothGattCharacteristic characteristic) {
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if (mBluetoothAdapter == null || mBluetoothGatt == null) {
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Log.w(TAG, "BluetoothAdapter not initialized");
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return;
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}
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if (ActivityCompat.checkSelfPermission(this, Manifest.permission.BLUETOOTH_CONNECT) != PackageManager.PERMISSION_GRANTED) {
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// TODO: Consider calling
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// ActivityCompat#requestPermissions
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// here to request the missing permissions, and then overriding
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// public void onRequestPermissionsResult(int requestCode, String[] permissions,
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// int[] grantResults)
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// to handle the case where the user grants the permission. See the documentation
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// for ActivityCompat#requestPermissions for more details.
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return;
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}
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mBluetoothGatt.writeCharacteristic(characteristic);
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}
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/**
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* Enables or disables notification on a give characteristic.
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*
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* @param characteristic Characteristic to act on.
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* @param enabled If true, enable notification. False otherwise.
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*/
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//选择地址
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public void setCharacteristicNotification(BluetoothGattCharacteristic characteristic, boolean enabled) {
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if (mBluetoothAdapter == null || mBluetoothGatt == null) {
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Log.w(TAG, "BluetoothAdapter not initialized");
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return;
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}
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if (ActivityCompat.checkSelfPermission(this, Manifest.permission.BLUETOOTH_CONNECT) != PackageManager.PERMISSION_GRANTED) {
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// TODO: Consider calling
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// ActivityCompat#requestPermissions
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// here to request the missing permissions, and then overriding
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// public void onRequestPermissionsResult(int requestCode, String[] permissions,
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// int[] grantResults)
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// to handle the case where the user grants the permission. See the documentation
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// for ActivityCompat#requestPermissions for more details.
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return;
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}
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mBluetoothGatt.setCharacteristicNotification(characteristic, enabled);
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}
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public List<BluetoothGattService> getSupportedGattServices() {
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if (mBluetoothGatt == null) return null;
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return mBluetoothGatt.getServices();
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}
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}
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