Android BLE与棒棒糖有关，但与牛轧糖无关
我是android develop的新手，我正在开发一个应用程序，通过Uart服务向BLE模块发送/接收数据 在智能手机安卓5.x.x上，该应用程序运行良好，可以与硬件连接并接收/传输数据 使用智能手机android 7.x.x，应用程序无法连接。 下面您可以看到MainActivity.java的一个片段：Android BLE与棒棒糖有关，但与牛轧糖无关,android,bluetooth-lowenergy,Android,Bluetooth Lowenergy,我是android develop的新手，我正在开发一个应用程序，通过Uart服务向BLE模块发送/接收数据 在智能手机安卓5.x.x上，该应用程序运行良好，可以与硬件连接并接收/传输数据 使用智能手机android 7.x.x，应用程序无法连接。 下面您可以看到MainActivity.java的一个片段： private final BroadcastReceiver UARTStatusChangeReceiver = new BroadcastReceiver() { publ
private final BroadcastReceiver UARTStatusChangeReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
final Intent mIntent = intent;
//*********************//
if (action.equals(UartService.ACTION_GATT_CONNECTED)) {
runOnUiThread(new Runnable() {
public void run() {
Log.d(TAG, "HW_CONNECT_MSG");
DisconnectButton.setEnabled(true);
DeviceInfo.setText("Device Information:");
DeviceName.setText(mDevice.getName() + " - Connected");
mState = UART_PROFILE_CONNECTED;
isConnected = true;
if(isConnected) {
//Serial protocol to send command on MCU
Connectcmd[0] = (byte) STX;
Connectcmd[1] = (byte) 0x02;
Connectcmd[2] = (byte) 0x43; // 'C';
Connectcmd[3] = (byte) 0x54; // 'T'
Connectcmd[4] = (byte) ETX;
try {
//send data to UART service
SendData(Connectcmd);
sleep(500); // wait 500ms to send data
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
new Handler().postDelayed(mUpdateTimeTask, 2000);
}
else
{
isConnected = false;
}
}
});
}
操作.equals（UartService.Device不支持UART） public class MainActivity extends Activity implements RadioGroup.OnCheckedChangeListener {
public static final String TAG = "DEBUG ";
public static final String DEV_NAME_FILTER = "";
private static final int REQUEST_SELECT_DEVICE = 1;
private static final int REQUEST_ENABLE_BT = 2;
private static final int UART_PROFILE_READY = 10;
private static final int UART_PROFILE_CONNECTED = 20;
public static final int UART_PROFILE_DISCONNECTED = 21;
private static final int STATE_OFF = 10;
private static final int PERMISSION_REQUEST_COARSE_LOCATION = 1;
TextView mRemoteRssiVal;
RadioGroup mRg;
private int mState = UART_PROFILE_DISCONNECTED;
private static UartService mService = null;
private static BluetoothDevice mDevice = null;
private BluetoothAdapter mBtAdapter = null;
private ListView messageListView;
private ArrayAdapter<String> listAdapter;
private Button SelectButton, DisconnectButton;
private EditText edtMessage;
private static Context context;
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client;
private static TextView DeviceInfo;
private static TextView DeviceName;
private static TextView Manufacturer;
public static boolean isConnected;
public static boolean isSetting;
public static boolean isReading;
public static boolean isManual;
public static boolean isFunctional;
public static boolean isBootloader;
public static byte[] SettingValues;
public static byte[] ReadingValues;
public static byte[] ManualValues;
public static byte[] FunctionalValues;
private static byte[] Connectcmd = new byte[5];
public static int STX = 0x3E; // '>'
public static int ETX = 0x23; // '#'
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
DeviceInfo = (TextView) findViewById(R.id.deviceInfo);
DeviceName = (TextView) findViewById(R.id.deviceName);
Manufacturer= (TextView) findViewById(R.id.manufacturer);
isConnected = false;
isSetting = false;
isReading = false;
isManual = false;
isFunctional = false;
isBootloader = false;
context = this;
//Enable location
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
// Android M Permission check
if (this.checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
final AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("This app needs location access");
builder.setMessage("Please grant location access so this app can detect beacons.");
builder.setPositiveButton(android.R.string.ok, null);
builder.setOnDismissListener(new DialogInterface.OnDismissListener() {
@Override
@TargetApi(Build.VERSION_CODES.M)
public void onDismiss(DialogInterface dialog) {
requestPermissions(new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, PERMISSION_REQUEST_COARSE_LOCATION);
}
});
builder.show();
}
}
mBtAdapter = BluetoothAdapter.getDefaultAdapter();
if (mBtAdapter == null) {
Toast.makeText(this, "Bluetooth is not available", Toast.LENGTH_LONG).show();
finish();
return;
}
SelectButton = (Button) findViewById(R.id.button);
DisconnectButton = (Button) findViewById(R.id.disconnect);
DisconnectButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Serial protocol to send command on MCU
Connectcmd[0] = (byte) STX;
Connectcmd[1] = (byte) 0x02;
Connectcmd[2] = (byte) 0x44; // 'D';
Connectcmd[3] = (byte) 0x43; // 'C'
Connectcmd[4] = (byte) ETX;
try {
//send data to Banner service
SendData(Connectcmd);
sleep(500); // Wait 500ms to send data
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
MainActivity.disconnected();
setContentView(R.layout.activity_main);
finish();
} catch (Exception e) {
Log.e(TAG, "Disconnect error");
}
}
});
// Handle Select device button
SelectButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (!mBtAdapter.isEnabled()) {
Log.i(TAG, "onClick - BT not enabled yet");
Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableIntent, REQUEST_ENABLE_BT);
} else {
if (SelectButton.getText().equals("SELECT CELU")) {
//Connect button pressed, open DeviceListActivity class, with popup windows that scan for devices
Log.i(TAG, "Push button CONNECT");
Intent newIntent = new Intent(context, DeviceListActivity.class);
((Activity) context).startActivityForResult(newIntent, MainActivity.REQUEST_SELECT_DEVICE);
} else {
//Disconnect button pressed
disconnected();
}
}
}
});
// Set initial UI state
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
}
//UART service connected/disconnected
private ServiceConnection mServiceConnection = new ServiceConnection() {
public void onServiceConnected(ComponentName className, IBinder rawBinder) {
mService = ((UartService.LocalBinder) rawBinder).getService();
Log.d(TAG, "onServiceConnected mService= " + mService);
if (!mService.initialize()) {
Log.e(TAG, "Unable to initialize Bluetooth");
finish();
}
}
public void onServiceDisconnected(ComponentName classname) {
//// mService.disconnect(mDevice);
mService = null;
}
};
private Handler mHandler = new Handler() {
@Override
//Handler events that received from UART service
public void handleMessage(Message msg) {
}
};
private final BroadcastReceiver UARTStatusChangeReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
final Intent mIntent = intent;
//*********************//
if (action.equals(UartService.ACTION_GATT_CONNECTED)) {
runOnUiThread(new Runnable() {
public void run() {
String currentDateTimeString = DateFormat.getTimeInstance().format(new Date());
Log.d(TAG, "CELU_CONNECT_MSG");
//btnConnectDisconnect.setText("Disconnect");
//edtMessage.setEnabled(true);
DisconnectButton.setEnabled(true);
DeviceInfo.setText("Device Information:");
DeviceName.setText(mDevice.getName() + " - Connected");
mState = UART_PROFILE_CONNECTED;
isConnected = true;
//IF COMMENTED THE APP CONNECTS!!!!!!!!!!!!!!!!!!
//ELSE IF NOT COMMENTED THE APP NEVER CONNECTS
/*if(isConnected) {
//Serial protocol to send command on MCU
Connectcmd[0] = (byte) STX;
Connectcmd[1] = (byte) 0x02;
Connectcmd[2] = (byte) 0x43; // 'C';
Connectcmd[3] = (byte) 0x54; // 'T'
Connectcmd[4] = (byte) ETX;
try {
//send data to UART service
SendData(Connectcmd);
sleep(500); // Wait 500ms to send data
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
new Handler().postDelayed(mUpdateTimeTask, 2000);
}
else
{
isConnected = false;
}*/
new Handler().postDelayed(mUpdateTimeTask, 2000);
}
});
}
//*********************//
if (action.equals(UartService.ACTION_GATT_DISCONNECTED)) {
runOnUiThread(new Runnable() {
public void run() {
Log.d(TAG, "HW_DISCONNECT_MSG");
DisconnectButton.setEnabled(false);
DeviceName.setText("Not Connected");
mState = UART_PROFILE_DISCONNECTED;
mService.close();
//setUiState();
}
});
}
//Enable notifivcation on UART service//
if (action.equals(UartService.ACTION_GATT_SERVICES_DISCOVERED)) {
mService.enableTXNotification();
}
//*********************//
if (action.equals(UartService.ACTION_DATA_AVAILABLE)) {
final byte[] txValue = intent.getByteArrayExtra(UartService.EXTRA_DATA);
try {
ParsingPacket(txValue);
} catch (Exception e) {
Log.e(TAG, e.toString());
}
}
//*********************//
if (action.equals(UartService.DEVICE_DOES_NOT_SUPPORT_BLE_UART)) {
showMessage("Device doesn't support UART over BLE Celu . Disconnecting");
mService.disconnect();
}
}
};
private static void ParsingPacket(byte[] packet) throws Exception {
if (packet.length == 0) {
// received empty packet
isConnected = false;
isSetting = false;
isReading = false;
isManual = false;
isFunctional = false;
isBootloader = false;
}
if(isSetting){
isSetting = false;
SettingValues = packet.clone();
String text = new String(SettingValues, "UTF-8");
Log.d(TAG, text);
}
if(isReading){
ReadingValues= packet;
ReadActivity.updateMeasure(ReadingValues);
//ReadActivity.addData(packet);
//String text = new String(ReadingValues, "UTF-8");
Log.d("Length ", String.format("%02d", (int) ReadingValues.length));
for(int i=0; i<ReadingValues.length; i++) {
String text = String.format("%02x", (int) ReadingValues[i]);
Log.d(TAG, text);
}
}
if(isManual){
isManual = false;
ManualValues = packet.clone();
String text = new String(ManualValues, "UTF-8");
Log.d(TAG, text);
}
if(isFunctional){
isFunctional = false;
FunctionalValues = packet.clone();
String text = new String(FunctionalValues, "UTF-8");
Log.d(TAG, text);
}
if(isBootloader){
isBootloader = false;
// do samething
}
}
private Runnable mUpdateTimeTask = new Runnable() {
public void run() {
if(DeviceName.getText()!="Not Connected") {
Intent connectedIntent = new Intent(getApplicationContext(), MenuActivity.class); //new Intent("com.antertech.mybleapplication.MenuActivity");
startActivity(connectedIntent);
}
}
};
private void service_init() {
Intent bindIntent = new Intent(this, UartService.class);
bindService(bindIntent, mServiceConnection, Context.BIND_AUTO_CREATE);
LocalBroadcastManager.getInstance(this).registerReceiver(UARTStatusChangeReceiver, makeGattUpdateIntentFilter());
}
private static IntentFilter makeGattUpdateIntentFilter() {
final IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(UartService.ACTION_GATT_CONNECTED);
intentFilter.addAction(UartService.ACTION_GATT_DISCONNECTED);
intentFilter.addAction(UartService.ACTION_GATT_SERVICES_DISCOVERED);
intentFilter.addAction(UartService.ACTION_DATA_AVAILABLE);
intentFilter.addAction(UartService.DEVICE_DOES_NOT_SUPPORT_BLE_UART);
return intentFilter;
}
@Override
public void onStart() {
super.onStart();// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client.connect();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
AppIndex.AppIndexApi.start(client, getIndexApiAction());
}
@Override
public void onDestroy() {
super.onDestroy();
Log.d(TAG, "onDestroy()");
try {
LocalBroadcastManager.getInstance(this).unregisterReceiver(UARTStatusChangeReceiver);
} catch (Exception ignore) {
Log.e(TAG, ignore.toString());
}
unbindService(mServiceConnection);
mService.stopSelf();
mService = null;
}
@Override
protected void onStop() {
Log.d(TAG, "onStop");
super.onStop();// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
AppIndex.AppIndexApi.end(client, getIndexApiAction());
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client.disconnect();
}
@Override
protected void onPause() {
Log.d(TAG, "onPause");
super.onPause();
}
@Override
protected void onRestart() {
super.onRestart();
Log.d(TAG, "onRestart");
}
@Override
public void onResume() {
super.onResume();
Log.d(TAG, "onResume");
if (!mBtAdapter.isEnabled()) {
Log.i(TAG, "onResume - BT not enabled yet");
Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableIntent, REQUEST_ENABLE_BT);
}
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case REQUEST_SELECT_DEVICE:
//When the DeviceListActivity return, with the selected device address
if (resultCode == Activity.RESULT_OK && data != null) {
String deviceAddress = data.getStringExtra(BluetoothDevice.EXTRA_DEVICE);
mDevice = BluetoothAdapter.getDefaultAdapter().getRemoteDevice(deviceAddress);
Log.d(TAG, "... onActivityResultdevice.address==" + mDevice + " mserviceValue " + mService);
mService.connect(deviceAddress);
//setContentView(R.layout.activity_setting);
((TextView) findViewById(R.id.deviceName)).setText(mDevice.getName() + " - Connecting...");
}
break;
case REQUEST_ENABLE_BT:
// When the request to enable Bluetooth returns
if (resultCode == Activity.RESULT_OK) {
Toast.makeText(this, "Bluetooth has turned on ", Toast.LENGTH_SHORT).show();
} else {
// User did not enable Bluetooth or an error occurred
Log.d(TAG, "BT not enabled");
Toast.makeText(this, "Problem in BT Turning ON ", Toast.LENGTH_SHORT).show();
finish();
}
break;
default:
Log.e(TAG, "wrong request code");
break;
}
}
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
}
public static void SendData(byte[] text) {
mService.writeRXCharacteristic(text);
Log.i(TAG, "Message send to Target");
}
public static void disconnected() {
if (mDevice != null) {
mService.disconnect();
Log.i(TAG, "Push Button DISCONNECT");
}
}
private void showMessage(String msg) {
Toast.makeText(this, msg, Toast.LENGTH_SHORT).show();
}
@Override
public void onBackPressed() {
if (mState == UART_PROFILE_CONNECTED) {
Intent startMain = new Intent(Intent.ACTION_MAIN);
startMain.addCategory(Intent.CATEGORY_HOME);
startMain.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(startMain);
showMessage("CELU TPE running in background.\n Disconnect to exit");
} else {
new AlertDialog.Builder(this)
.setIcon(android.R.drawable.ic_dialog_alert)
.setTitle(R.string.popup_title)
.setMessage(R.string.popup_message)
.setPositiveButton(R.string.popup_yes, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
})
.setNegativeButton(R.string.popup_no, null)
.show();
}
}
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[],
int[] grantResults) {
switch (requestCode) {
case PERMISSION_REQUEST_COARSE_LOCATION: {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Log.d(TAG, "coarse location permission granted");
} else {
final AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Functionality limited");
builder.setMessage("Since location access has not been granted, this app will not be able to discover beacons when in the background.");
builder.setPositiveButton(android.R.string.ok, null);
builder.setOnDismissListener(new DialogInterface.OnDismissListener() {
@Override
public void onDismiss(DialogInterface dialog) {
}
});
builder.show();
}
return;
}
}
}
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
public Action getIndexApiAction() {
Thing object = new Thing.Builder()
.setName("Main Page") // TODO: Define a title for the content shown.
// TODO: Make sure this auto-generated URL is correct.
.setUrl(Uri.parse("http://[ENTER-YOUR-URL-HERE]"))
.build();
return new Action.Builder(Action.TYPE_VIEW)
.setObject(object)
.setActionStatus(Action.STATUS_TYPE_COMPLETED)
.build();
}
}
public类MainActivity扩展活动实现RadioGroup.OnCheckedChangeListener{
公共静态最终字符串TAG=“DEBUG”；
公共静态最终字符串DEV_NAME_FILTER=“”；
专用静态最终整数请求\u选择\u设备=1；
私有静态最终整数请求_ENABLE_BT=2；
专用静态最终接口配置文件就绪=10；
专用静态最终接口配置文件连接=20；
公共静态最终接口配置文件断开连接=21；
私有静态最终整数状态_OFF=10；
私有静态最终整数权限\请求\粗略\位置=1；
文本视图mRemoteRssiVal；
放射组mRg；
private int mState=UART\u PROFILE\u已断开连接；
专用静态UartService mService=null；
私有静态蓝牙设备mDevice=null；
私有蓝牙适配器mBtAdapter=null；
私有ListView消息ListView；
专用阵列适配器列表适配器；
专用按钮选择按钮、断开按钮；
私人编辑短信；
私有静态语境；
/**
*注意：这是自动生成的，用于实现应用程序索引API。
*看https://g.co/AppIndexing/AndroidStudio 了解更多信息。
*/
私人谷歌客户；
私有静态文本视图设备信息；
私有静态文本视图设备名称；
私有静态文本视图制造商；
公共静态布尔不连通；
公共静态布尔设置；
公共静态布尔阅读；
公共静态布尔逻辑；
公共静态布尔函数；
公共静态boolean-isBootloader；
公共静态字节[]设置值；
公共静态字节[]读取值；
公共静态字节[]值；
公共静态字节[]函数值；
私有静态字节[]Connectcmd=新字节[5]；
公共静态int STX=0x3E；//'>'
公共静态int-ETX=0x23；/“#”
@凌驾
创建时的公共void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_main）；
DeviceInfo=（TextView）findViewById（R.id.DeviceInfo）；
DeviceName=（TextView）findViewById（R.id.DeviceName）；
制造商=（TextView）findViewById（R.id.Manufacturer）；
断开连接=错误；
isSetting=false；
isReading=假；
isManual=假；
isFunctional=false；
isBootloader=false；
上下文=这个；
//启用位置
if（Build.VERSION.SDK\u INT>=Build.VERSION\u code.M）{
//Android M权限检查
if（this.checkSelfPermission（Manifest.permission.ACCESS\u\u LOCATION）！=PackageManager.permission\u已授予）{
final AlertDialog.Builder=新建AlertDialog.Builder（此）；
builder.setTitle（“此应用程序需要位置访问”）；
setMessage（“请授予位置访问权限，以便此应用程序可以检测信标。”）；
setPositiveButton（android.R.string.ok，null）；
builder.setOnDismissListener（新的DialogInterface.OnDismissListener（）{
@凌驾
@TargetApi（Build.VERSION\u CODES.M）
公共void onDismiss（对话框接口对话框）{
requestPermissions（新字符串[]{Manifest.permission.ACCESS\u rough\u LOCATION}，permission\u REQUEST\u rough\u LOCATION）；
}
});
builder.show（）；
}
}
mBtAdapter=BluetoothAdapter.getDefaultAdapter（）；
if（mBtAdapter==null）{
Toast.makeText（此“蓝牙不可用”，Toast.LENGTH_LONG.show（）；
完成（）；
返回；
}
SelectButton=（按钮）findViewById（R.id.Button）；
DisconnectButton=（按钮）findViewById（R.id.disconnect）；
DisconnectButton.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图v）{
//单片机上发送命令的串行协议
Connectcmd[0]=（字节）STX；
Connectcmd[1]=（字节）0x02；
Connectcmd[2]=（字节）0x44；//“D”；
Connectcmd[3]=（字节）0x43；//“C”
Connectcmd[4]=（字节）ETX；
试一试{
//将数据发送到横幅服务
SendData（Connectcmd）；
休眠（500）；//等待500毫秒发送数据
}捕获（例外e）{
//TODO自动生成的捕捉块
e、 printStackTrace（）；
}
试一试{
MainActivity.disconnected（）；
setContentView（R.layout.activity_main）；
完成（）；
}捕获（例外e）{
Log.e（标记“断开连接错误”）；
}
}
});
//手柄选择设备按钮