我正在使用Gatt协议向北欧设备发送一些数据，如果我从onCreate内部调用函数初始化，则控件返回onServiceConnected，但是如果我从onClick内部调用函数初始化，则控件不会来对于回调函数onServiceConnecdted，我无法找到原因。如果有人在此之前遇到过这样的问题，请详细说明这个问题。
package com.evobi.bisoft.io;
import java.io.OutputStream;
import java.util.UUID;
import com.evobi.bisoft.BaseActivity;
import com.evobi.bisoft.R;
import com.evobi.bisoft.io.bluetooth.SettingsActivity;
import com.evobi.bisoft.io.bluetooth.UartService;
import android.app.ActionBar;
import android.app.Activity;
import android.app.ProgressDialog;
import android.bluetooth.BluetoothAdapter;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.content.SharedPreferences;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.preference.PreferenceManager;
import android.support.v4.content.LocalBroadcastManager;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.SeekBar;
import android.widget.Toast;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;
/**
*
* @author Sreekanth
* Sends remote data to the bibox over bluetooth.
* The remote contains an up,down,left,right. A slider, a keypad.
* Protocol - For any key press send 'B' first then the associated key value.
* - For any slider movement 'S' first then the associated slider value.
*
*/
public class BlueToothRemoteActivity extends BaseActivity {
//Arrow control buttons...
Button mRightArrowBtn,mLeftArrowBtn,mUpArrowBtn,mDownArrowBtn;
//KeyPad buttons declared...
Button mKeyPad0Btn,mKeyPad1Btn,mKeyPad2Btn,mKeyPad3Btn,mKeyPad4Btn,mKeyPad5Btn,mKeyPad6Btn,mKeyPad7Btn,mKeyPad8Btn,mKeyPad9Btn,mKeyPadSBtn,mKeyPadEBtn;
//
SeekBar mBtSliderSeekBar;
TextView mBtSliderSeekBarTv;
private String mDeviceMACAddress;
private byte[] mSendArray;
// Bluetooth Stuff
private BluetoothAdapter mBluetoothAdapter = null;
private static final int MAX_ALLOWED_PAIRED_DEVICES = 3;
private static UUID SPP_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
private OutputStream mOutStream = null;
private Handler mHandler;
private Toast mFailToast ;
private boolean mConnectStatus = false;
private boolean mConnectionStatus2 = false;
private static final int REQUEST_ENABLE_BT = 2;
private static final int REQUEST_CONNECT_DEVICE = 1;
private String mDeviceAddress = null;
private boolean mIsInitialized;
private ProgressDialog mProgressDialog;
private UartService mService = null;
private boolean mIsConnected;
private byte[] mCurrentData = null;
private String mDeviceBtAddress;
private static final int UART_PROFILE_DISCONNECTED = 21;
private static final int UART_PROFILE_CONNECTED = 20;
private int mState = UART_PROFILE_DISCONNECTED;
@Override
public void onActivityResult(final int requestCode, final int resultCode, final Intent data) {
switch (requestCode) {
case REQUEST_CONNECT_DEVICE:
// When DeviceListActivity returns with a device to connect
if (resultCode == Activity.RESULT_OK) {
// Get the device MAC address
this.mDeviceAddress = data.getExtras().getString(SettingsActivity.EXTRA_DEVICE_ADDRESS);
// Connect to device with specified MAC address
} else {
// Failure retrieving MAC address
Toast.makeText(this, R.string.macFailed, Toast.LENGTH_SHORT).show();
}
break;
case REQUEST_ENABLE_BT:
// When the request to enable Bluetooth returns
if (resultCode == Activity.RESULT_OK) {
} else {
// User did not enable Bluetooth or an error occured
// Toast.makeText(this, R.string.bt_not_enabled_leaving,
// Toast.LENGTH_SHORT).show();
this.finish();
}
}
}
@Override
protected void onStop(){
super.onStop();
}
@Override
protected void onCreate(final Bundle savedInstanceState){
super.onCreate(savedInstanceState);
this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
this.getActionBar().setIcon(R.drawable.ic_bt_remote);
this.getActionBar().setTitle("Bluetooth Remote");
getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
getActionBar().setCustomView(R.layout.actionbar_bt_remote);
this.setContentView(R.layout.layout_bt_remote);
this.mIsConnected = false;
this.mIsInitialized = false;
byte[] sliderData = new byte[2];
sliderData[0] = (byte) 'B';
sliderData[1] = (byte) 'R';
mCurrentData = sliderData;
//Navigation arrow buttons initialisation..
mRightArrowBtn = (Button) findViewById(R.id.id_bt_remote_right_button);
mLeftArrowBtn = (Button) findViewById(R.id.id_bt_remote_left_button);
mDownArrowBtn = (Button) findViewById(R.id.id_bt_remote_down_button);
mUpArrowBtn = (Button) findViewById(R.id.id_bt_remote_up_button);
//KeyPad Buttons initialisation...
mKeyPad0Btn = (Button) findViewById(R.id.id_bt_remote_keypad_0);
mKeyPad1Btn = (Button) findViewById(R.id.id_bt_remote_keypad_1);
mKeyPad2Btn = (Button) findViewById(R.id.id_bt_remote_keypad_2);
mKeyPad3Btn = (Button) findViewById(R.id.id_bt_remote_keypad_3);
mKeyPad4Btn = (Button) findViewById(R.id.id_bt_remote_keypad_4);
mKeyPad5Btn = (Button) findViewById(R.id.id_bt_remote_keypad_5);
mKeyPad6Btn = (Button) findViewById(R.id.id_bt_remote_keypad_6);
mKeyPad7Btn = (Button) findViewById(R.id.id_bt_remote_keypad_7);
mKeyPad8Btn = (Button) findViewById(R.id.id_bt_remote_keypad_8);
mKeyPad9Btn = (Button) findViewById(R.id.id_bt_remote_keypad_9);
mKeyPadSBtn = (Button) findViewById(R.id.id_bt_remote_keypad_s);
mKeyPadEBtn = (Button) findViewById(R.id.id_bt_remote_keypad_e);
//SeekBar intialised...
mBtSliderSeekBar = (SeekBar)findViewById(R.id.id_bt_remote_seek_bar);
mBtSliderSeekBarTv = (TextView)findViewById(R.id.id_seek_bar_progress_tv);
//SeekBar definition...
mBtSliderSeekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
byte[] sliderData = new byte[2];
sliderData[0] = (byte) 'S';
sliderData[1] = (byte) seekBar.getProgress();
mCurrentData = sliderData;
do{
//Wait till initialization is over.
}while(!mIsConnected);
//Now initialization is over.
mService.writeRXCharacteristic(mCurrentData);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
//Let the textview show the seekbar progress..
mBtSliderSeekBarTv.setText(String.valueOf(progress));
}
});
//Arrow buttons...
mRightArrowBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
byte[] rightArrowData = new byte[2];
rightArrowData[0] = (byte) 'B';
rightArrowData[1] = (byte) 'r';
mCurrentData = rightArrowData;
do{
//Wait till initialization is over.
}while(!mIsConnected);
//Now initialization is over.
mService.writeRXCharacteristic(mCurrentData);
}
});
mLeftArrowBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
byte[] leftArrowData = new byte[2];
leftArrowData[0] = (byte) 'B';
leftArrowData[1] = (byte) 'l';
mCurrentData = leftArrowData;
do{
//Wait till initialization is over.
}while(!mIsConnected);
//Now initialization is over.
mService.writeRXCharacteristic(mCurrentData);
}
});
mDownArrowBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
byte[] downArrowData = new byte[2];
downArrowData[0] = (byte) 'B';
downArrowData[1] = (byte) 'd';
mCurrentData = downArrowData;
do{
//Wait till initialization is over.
}while(!mIsConnected);
//Now initialization is over.
mService.writeRXCharacteristic(mCurrentData);
}
});
mUpArrowBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
byte[] upArrowData = new byte[2];
upArrowData[0] = (byte) 'B';
upArrowData[1] = (byte) 'u';
mCurrentData = upArrowData;
do{
//Wait till initialization is over.
}while(!mIsConnected);
//Now initialization is over.
mService.writeRXCharacteristic(mCurrentData);
}
});
//KeyPad Buttons...
mKeyPad0Btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
byte[] keyPadData = new byte[2];
keyPadData[0] = (byte) 'B';
keyPadData[1] = (byte) '0';
mCurrentData = keyPadData;
do{
//Wait till initialization is over.
}while(!mIsConnected);
//Now initialization is over.
mService.writeRXCharacteristic(mCurrentData);
}
});
mKeyPad1Btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
initializeConnection();
do{
}while(!mIsInitialized);
mIsConnected = mService.connect(mDeviceBtAddress);
byte[] keyPadData = new byte[2];
keyPadData[0] = (byte) 'B';
keyPadData[1] = (byte) '1';
mCurrentData = keyPadData;
do{
//Wait till initialization is over.
}while(!mIsConnected);
//Now initialization is over.
boolean writeStatus = mService.writeRXCharacteristic(mCurrentData);
do{
}while(!writeStatus);
try {
LocalBroadcastManager.getInstance(v.getContext()).unregisterReceiver(UARTStatusChangeReceiver);
} catch (Exception ignore) {
Log.e("TAG", ignore.toString());
}
Intent bindIntent = new Intent(getApplicationContext(), UartService.class);
boolean isBound = getApplicationContext().bindService(bindIntent, mServiceConnection, Context.BIND_AUTO_CREATE);
if(isBound)
getApplicationContext().unbindService(mServiceConnection);
if(mService!=null)
mService.stopSelf();
mService= null;
}
});
mKeyPad2Btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
byte[] keyPadData = new byte[2];
keyPadData[0] = (byte) 'B';
keyPadData[1] = (byte) '2';
mCurrentData = keyPadData;
do{
//Wait till initialization is over.
}while(!mIsConnected);
//Now initialization is over.
mService.writeRXCharacteristic(mCurrentData);
}
});
mKeyPad3Btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
byte[] keyPadData = new byte[2];
keyPadData[0] = (byte) 'B';
keyPadData[1] = (byte) '3';
mCurrentData = keyPadData;
do{
//Wait till initialization is over.
}while(!mIsConnected);
//Now initialization is over.
mService.writeRXCharacteristic(mCurrentData);
}
});
mKeyPad4Btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
byte[] keyPadData = new byte[2];
keyPadData[0] = (byte) 'B';
keyPadData[1] = (byte) '4';
mCurrentData = keyPadData;
do{
//Wait till initialization is over.
}while(!mIsConnected);
//Now initialization is over.
mService.writeRXCharacteristic(mCurrentData);
}
});
mKeyPad5Btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
byte[] keyPadData = new byte[2];
keyPadData[0] = (byte) 'B';
keyPadData[1] = (byte) '5';
mCurrentData = keyPadData;
do{
//Wait till initialization is over.
}while(!mIsConnected);
//Now initialization is over.
mService.writeRXCharacteristic(mCurrentData);
}
});
mKeyPad6Btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
byte[] keyPadData = new byte[2];
keyPadData[0] = (byte) 'B';
keyPadData[1] = (byte) '6';
mCurrentData = keyPadData;
do{
//Wait till initialization is over.
}while(!mIsConnected);
//Now initialization is over.
mService.writeRXCharacteristic(mCurrentData);
}
});
mKeyPad7Btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
byte[] keyPadData = new byte[2];
keyPadData[0] = (byte) 'B';
keyPadData[1] = (byte) '7';
mCurrentData = keyPadData;
do{
//Wait till initialization is over.
}while(!mIsConnected);
//Now initialization is over.
mService.writeRXCharacteristic(mCurrentData);
}
});
mKeyPad8Btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
byte[] keyPadData = new byte[2];
keyPadData[0] = (byte) 'B';
keyPadData[1] = (byte) '8';
mCurrentData = keyPadData;
do{
//Wait till initialization is over.
}while(!mIsConnected);
//Now initialization is over.
mService.writeRXCharacteristic(mCurrentData);
}
});
mKeyPad9Btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
byte[] keyPadData = new byte[2];
keyPadData[0] = (byte) 'B';
keyPadData[1] = (byte) '9';
mCurrentData = keyPadData;
do{
//Wait till initialization is over.
}while(!mIsConnected);
//Now initialization is over.
mService.writeRXCharacteristic(mCurrentData);
}
});
mKeyPadSBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
byte[] keyPadData = new byte[2];
keyPadData[0] = (byte) 'B';
keyPadData[1] = (byte) 'S';
mCurrentData = keyPadData;
do{
//Wait till initialization is over.
}while(!mIsConnected);
//Now initialization is over.
mService.writeRXCharacteristic(mCurrentData);
}
});
mKeyPadEBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
byte[] keyPadData = new byte[2];
keyPadData[0] = (byte) 'B';
keyPadData[1] = (byte) 'E';
mCurrentData = keyPadData;
do{
//Wait till initialization is over.
}while(!mIsConnected);
//Now initialization is over.
mService.writeRXCharacteristic(mCurrentData);
}
});
initializeConnection();
}
/*
* Gets the mac id of the saved device...
*
* @return macId
* returns the mac id of the saved device.
* if no device saved, returns null.
*/
private String getSavedDeviceMadId(){
SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
String macId = pref.getString("BL", "bl");
if(!macId.equals("bl"))
return macId;
else
return null;
}
/**
* Saves the saved device mac id to mDeviceMACid, if not found shows a toast message.
* Sets the bluetooth adapter to mBluetoothAdapter, if not success, then sets shows a toast.
*/
private void initializeConnection(){
//If some device has been saved...
String macId = getSavedDeviceMadId();
if(macId != null){
// mProgressDialog = ProgressDialog.show(this, "Connecting...",
// "Please wait while initializing the connection.", true);
// mProgressDialog.show();
service_init();
//Save mac id to the mDeviceMacAddress...
this.mDeviceMACAddress = getSavedDeviceMadId();
this.mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (this.mBluetoothAdapter == null) {
Toast.makeText(this, R.string.no_bt_device, Toast.LENGTH_LONG).show();
this.finish();
return;
}
}else{
//No device saved...
showToast(getString(R.string.save_device_message), true);
}
}
@Override
public void onBackPressed(){
super.onBackPressed();
Log.d("TAG", "onBackPressed");
try {
LocalBroadcastManager.getInstance(this).unregisterReceiver(UARTStatusChangeReceiver);
} catch (Exception ignore) {
Log.e("TAG", ignore.toString());
}
Intent bindIntent = new Intent(getApplicationContext(), UartService.class);
boolean isBound = getApplicationContext().bindService(bindIntent, mServiceConnection, Context.BIND_AUTO_CREATE);
if(isBound)
getApplicationContext().unbindService(mServiceConnection);
if(mService!=null)
mService.stopSelf();
mService= null;
}
@Override
public void onDestroy() {
super.onDestroy();
Log.d("TAG", "onDestroy()");
try {
LocalBroadcastManager.getInstance(this).unregisterReceiver(UARTStatusChangeReceiver);
} catch (Exception ignore) {
Log.e("TAG", ignore.toString());
}
Intent bindIntent = new Intent(getApplicationContext(), UartService.class);
boolean isBound = getApplicationContext().bindService(bindIntent, mServiceConnection, Context.BIND_AUTO_CREATE);
if(isBound)
getApplicationContext().unbindService(mServiceConnection);
if(mService!=null)
mService.stopSelf();
mService= null;
}
/**
* Initializes the service.
*/
private void service_init() {
Intent bindIntent = new Intent(this, UartService.class);
getApplicationContext().bindService(bindIntent, mServiceConnection, Context.BIND_AUTO_CREATE);
LocalBroadcastManager.getInstance(getApplicationContext()).registerReceiver(UARTStatusChangeReceiver, makeGattUpdateIntentFilter());
}
/**
* Updates the gatt intent filter.
*/
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_UART);
return intentFilter;
}
private final BroadcastReceiver UARTStatusChangeReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
/**
* If connected, then set the state.
*/
if (action.equals(UartService.ACTION_GATT_CONNECTED)) {
runOnUiThread(new Runnable() {
public void run() {
mState = UART_PROFILE_CONNECTED;
}
});
}
/**
* If disconnected then set the state accordingly.
*/
if (action.equals(UartService.ACTION_GATT_DISCONNECTED)) {
runOnUiThread(new Runnable() {
public void run() {
Log.d("TAG", "UART_DISCONNECT_MSG");
mState = UART_PROFILE_DISCONNECTED;
if(mService!=null)
mService.close();
}
});
}
if (action.equals(UartService.ACTION_GATT_SERVICES_DISCOVERED)) {
if(mService.getBluetoothGatt()!=null)
mService.enableTXNotification();
Log.d("tag", "action gatt services discovered");
}
//*********************//
if (action.equals(UartService.ACTION_DATA_AVAILABLE)) {
Log.d("tag", "action data available");
}
//*********************//
if (action.equals(UartService.DEVICE_DOES_NOT_SUPPORT_UART)){
Log.d("tag", "device dont support uart");
}
}
};
//UART service connected/disconnected
private ServiceConnection mServiceConnection = new ServiceConnection() {
boolean isBound;
boolean isWriteStatus;
public void onServiceConnected(ComponentName className, IBinder rawBinder) {
// mProgressDialog.dismiss();
mService = ((UartService.LocalBinder) rawBinder).getService();
final SharedPreferences pre = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
//Get the device mac address...
mDeviceBtAddress = pre.getString("BL", "");
Log.d("TAG", "onServiceConnected mService= " + mService);
if (!mService.initialize()) {
Log.e("TAG", "Unable to initialize Bluetooth");
finish();
}
mIsConnected = mService.connect(mDeviceBtAddress);
mIsInitialized = true;
}
public void onServiceDisconnected(ComponentName classname) {
mService = null;
}
};
}