Android蓝牙BLE之RSSI读写（2）

第二种方法就是连接后读取rssi

废话不多说，代码奉上

[java] view
plain copy

import com.example.readblerssi.R;  

import com.readrssi.ble.BluetoothOperate;  

  

import android.annotation.SuppressLint;  

import android.app.Activity;  

import android.bluetooth.BluetoothAdapter;  

import android.bluetooth.BluetoothDevice;  

import android.bluetooth.BluetoothManager;  

import android.content.Context;  

import android.content.Intent;  

import android.content.pm.PackageManager;  

import android.os.Bundle;  

import android.os.Handler;  

import android.os.Message;  

import android.util.Log;  

import android.view.View;  

import android.view.View.OnClickListener;  

import android.view.WindowManager;  

import android.widget.Button;  

import android.widget.TextView;  

import android.widget.Toast;  

/** 

 * MainActivity 

 * @author Administrator 

 * FanMo 

 * 

 */  

public class MainActivity extends Activity implements OnClickListener {  

    private static final String TAG = "MainActivity.class";  

    private Context context = MainActivity.this;  

    private String scanBluetoothName="Autophix";  

        private Button btnConnect;  

        private TextView tvRssi,tvBluetoothName,tvbluetoothMac,tvConnectState;  

        private BluetoothAdapter mBluetoothAdapter;  

        private BluetoothOperate mBluetoothOperate;  

        private static final int REQUEST_ENABLE_BT = 1;  

        private static final int READRSSI=0;  

        private static final int CONNECTED=1;  

        private static final int DISCONNECT=2;  

        private String bluetoothName, bluetoothMacAddress;  

        private boolean mScanning = false;  

        private Handler mHandler;  

        private static final long SCAN_PERIOD =10000;  

    @Override  

    protected void onCreate(Bundle savedInstanceState) {  

        super.onCreate(savedInstanceState);  

                getWindow().setFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON,  

                        WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);  

                setContentView(R.layout.activity_main);  

                btnConnect=(Button) findViewById(R.id.mainactivity_bluetooth_connect);  

                btnConnect.setOnClickListener(this);  

                tvRssi=(TextView) findViewById(R.id.rssi_value);  

                tvBluetoothName=(TextView) findViewById(R.id.bluetooth_name);  

                tvbluetoothMac=(TextView) findViewById(R.id.bluetooth_mac);  

                tvConnectState=(TextView) findViewById(R.id.bluetooth_connect_state);  

                mHandler = new Handler();  

                if (!getPackageManager().hasSystemFeature(  

                        PackageManager.FEATURE_BLUETOOTH_LE)) {  

                    showToast("NOT SUPPORT BLE4.0");  

                } else {  

                    final BluetoothManager bluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);  

                    mBluetoothAdapter = bluetoothManager.getAdapter();  

                }  

                if (mBluetoothAdapter == null) {  

                    showToast("NOT SUPPORT BLE4.0");  

                }  

            mBluetoothOperate=BluetoothOperate.getInstance(this,mHandlerRssi);  

              

            }  

      

    @Override  

    protected void onResume() {  

        super.onResume();  

        if (!mBluetoothAdapter.isEnabled()) {  

            if (!mBluetoothAdapter.isEnabled()) {  

                Intent enableBtIntent = new Intent(  

                        BluetoothAdapter.ACTION_REQUEST_ENABLE);  

                startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);  

            }  

        }  

    }  

    @Override  

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {  

        super.onActivityResult(requestCode, resultCode, data);  

        switch (requestCode) {  

        case REQUEST_ENABLE_BT:  

            if (resultCode == RESULT_OK) {  

  

            } else {  

            }  

            break;  

        default:  

            break;  

        }  

    }  

    /** 

     *  

     * @param text 

     *     Toast show 方法 

     */  

    private void showToast(String text) {  

        Toast.makeText(context, text, 1000).show();  

    }  

  

    /** 

     * 搜索蓝牙设备 

     */  

    @SuppressWarnings("deprecation")  

    @SuppressLint("NewApi")  

    private void scanLeDevice(final boolean enable) {  

        if (enable) {  

            mHandler.postDelayed(new Runnable() {  

                @SuppressWarnings("deprecation")  

                @SuppressLint("NewApi")  

                @Override  

                public void run() {  

                    mScanning = false;  

                    mBluetoothAdapter.stopLeScan(mLeScanCallback);  

                  

                }  

            }, SCAN_PERIOD);  

  

            mScanning = true;  

            mBluetoothAdapter.startLeScan(mLeScanCallback);  

        } else {  

            mScanning = false;  

            mBluetoothAdapter.stopLeScan(mLeScanCallback);  

        }  

          

    }  

        @SuppressLint("NewApi")  

        private BluetoothAdapter.LeScanCallback mLeScanCallback = new BluetoothAdapter.LeScanCallback() {  

  

            @Override  

            public void onLeScan(final BluetoothDevice device, int rssi,  

                    byte[] scanRecord) {  

                runOnUiThread(new Runnable() {  

                    @SuppressWarnings("deprecation")  

                    @SuppressLint({ "NewApi", "HandlerLeak" })  

                    @Override  

                    public void run() {  

                            bluetoothName = device.getName();  

                            bluetoothMacAddress = device.getAddress();  

                            mBluetoothAdapter.stopLeScan(mLeScanCallback);  

                            mBluetoothOperate.setmDeviceAddress(bluetoothMacAddress);  

                            tvBluetoothName.setText(device.getName()+"");  

                            tvbluetoothMac.setText(bluetoothMacAddress+"");  

                            Log.d(TAG, "扫描到蓝牙设备 蓝牙名字="+bluetoothName+"MAC地址="+bluetoothMacAddress);  

                            mBluetoothOperate.OpenBluetoothService();  

                            scanLeDevice(true);  

                    }  

                });  

            }  

        };  

        @SuppressLint("HandlerLeak")  

        Handler mHandlerRssi=new Handler(){  

  

            @SuppressLint("HandlerLeak")  

            @Override  

            public void handleMessage(Message msg) {  

  

                super.handleMessage(msg);  

                switch (msg.what) {  

                case READRSSI:  

                    String rss=msg.obj.toString();  

                    tvRssi.setText(rss+"");  

                      

                    break;  

                case CONNECTED:  

                    tvConnectState.setText("已链接上");  

                    btnConnect.setText("CONNECTED");  

                    break;  

                case DISCONNECT:  

                    tvConnectState.setText("链接断开");  

                    btnConnect.setText("Scanning");  

                    tvRssi.setText("null");  

                    break;  

                default:  

                    break;  

                }  

            }  

              

        };  

        @Override  

        public void onClick(View v) {  

            // TODO Auto-generated method stub  

            switch (v.getId()) {  

            case R.id.mainactivity_bluetooth_connect:  

                if (!mScanning) {  

                    scanLeDevice(true);  

                    btnConnect.setText("Scanning");  

                } else {  

                    scanLeDevice(false);  

                    btnConnect.setText("connect");  

                }  

                break;  

  

            default:  

                break;  

            }  

              

        }  

        @Override  

        protected void onDestroy() {  

            super.onDestroy();  

            mBluetoothOperate.CloseBluetoothService();  

        }  

}  

关键代码 在BluetoothService.java中添加

[java] view
plain copy

public boolean getRssiVal() {   

     if (mBluetoothGatt == null)   

         return false;   

     return mBluetoothGatt.readRemoteRssi();   

      

 }   

另外添加

[java] view
plain copy

/** 

     * 读取蓝牙RSSi线程 

     */  

    Thread readRSSI =new Thread(){  

        int Rssi=0;  

        @Override  

        public void run() {  

            // TODO Auto-generated method stub  

            super.run();  

            while (isReadRssi){  

                try {  

                    sleep(200);  

                } catch (InterruptedException e) {  

                    // TODO Auto-generated catch block  

                    e.printStackTrace();  

                }  

                //如果读取蓝牙RSSi回调成功  

                if(mBluetoothLeService.getRssiVal()){  

                    //获取已经读到的RSSI值  

                    Rssi=BluetoothLeService.getBLERSSI();  

                    mHandler.obtainMessage(READRSSI, Rssi).sendToTarget();  

                }  

                  

            }  

              

        }  

          

    };  

源码在 在 http://download.csdn.net/detail/mapeifan/9355353

原文地址：http://blog.csdn.net/mapeifan/article/details/50299043