android - 开启和关闭蓝牙？

在eclipsebuildingforandroid中，有没有一个简单的教程或者任何人都有使用切换按钮打开和关闭蓝牙的代码？
如果有人能帮忙，我们将不胜感激。
-提前谢谢。

最佳答案

你需要

<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />

在清单文件和变量中，例如：

private final integer REQUEST_ENABLE_BT = 1;

和

BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
boolean hasBluetooth = (mBluetoothAdapter == null);

所以在你的创作中你可以做一些类似的事情：

final ToggleButton togglebutton = (ToggleButton) findViewById(R.id.togglebutton);
togglebutton.setOnClickListener(new OnClickListener()
{
  public void onClick(View v)
  {
    // Perform action on clicks
    if (togglebutton.isChecked())
    {
      if (hasBluetooth && !mBluetoothAdapter.isEnabled())
      {
        // prompt the user to turn BlueTooth on
        Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
        startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
      }
    }
    else
    {
      if (hasBluetooth && mBluetoothAdapter.isEnabled())
      {
        // you should really prompt the user for permission to turn
        // the BlueTooth off as well, e.g., with a Dialog
        boolean isDisabling = mBluetoothAdapter.disable();
        if (!isDisabling)
        {
           // an immediate error occurred - perhaps the bluetooth is already off?
        }
      }
    }
  }
});

当用户对“打开蓝牙”提示的响应被捕获时

protected void onActivityResult (int requestCode, int resultCode, Intent data)
{
  if ((requestCode == REQUEST_ENABLE_BT) && (resultCode == RESULT_OK))
  {
    boolean isEnabling = mBluetoothAdapter.enable();
    if (!isEnabling)
    {
      // an immediate error occurred - perhaps the bluetooth is already on?
    }
    else if (mBluetoothAdapter.getState() == BluetoothAdapter.STATE_TURNING_ON)
    {
      // the system, in the background, is trying to turn the Bluetooth on
      // while your activity carries on going without waiting for it to finish;
      // of course, you could listen for it to finish yourself - eg, using a
      // ProgressDialog that checked mBluetoothAdapter.getState() every x
      // milliseconds and reported when it became STATE_ON (or STATE_OFF, if the
      // system failed to start the Bluetooth.)
    }
  }
}