打开蓝牙和关闭蓝牙

package com.hairun.bluetooth;


import java.util.TooManyListenersException;


import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.content.Intent;
import android.os.Bundle;
import android.widget.CompoundButton;
import android.widget.Toast;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ToggleButton;


public class MainActivity extends Activity {


private ToggleButton toggleButton;
private BluetoothAdapter  bluetoothAdapter;//定义蓝牙适配器对象
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toggleButton = (ToggleButton) findViewById(R.id.main_toggleButton);
//创建意图准备使用蓝牙动作
Intent in =new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivity(in);

//获取蓝牙适配器对象
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();

toggleButton.setOnCheckedChangeListener(new OnCheckedChangeListener() {

@Override
public void onCheckedChanged(CompoundButton arg0, boolean arg1) {
if(arg1){
//判断蓝牙的状态
if(bluetoothAdapter.getState()==BluetoothAdapter.STATE_OFF){
Toast.makeText(MainActivity.this, "蓝牙打开！",4).show();
toggleButton.setTextOn("蓝牙关闭");
bluetoothAdapter.enable();
}else{
Toast.makeText(MainActivity.this, "蓝牙已经打开!", 5).show();
}
}else{
if(bluetoothAdapter.getState()==BluetoothAdapter.STATE_ON){
Toast.makeText(MainActivity.this, "蓝牙关闭", 5).show();
toggleButton.setTextOff("蓝牙打开");
bluetoothAdapter.disable();//让蓝牙关闭
}else{
Toast.makeText(MainActivity.this, "蓝牙已经关闭!", 5).show();
}
}

}
});


}




}