Android蓝牙BLE之RSSI读写（2）
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第二种方法就是连接后读取rssi
废话不多说，代码奉上
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
public boolean getRssiVal() {
if (mBluetoothGatt == null)
return false;
return mBluetoothGatt.readRemoteRssi();
}另外添加
/** * 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
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