BluetoothAdapter问题？

Question

我只是编写以下代码并在“mBtAdapter.startDiscovery（）;”上遇到一些问题，我无法理解到底发生了什么，我只想启动蓝牙并将设备添加到我的阵列中作为我的应用已加载。

package com.wiztech.veer;

import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.os.Bundle;
import android.widget.ArrayAdapter;

public class BLU_TESTActivity extends Activity {

// Member fields
private BluetoothAdapter mBtAdapter;
private ArrayAdapter<String> mPairedDevicesArrayAdapter;
private ArrayAdapter<String> mNewDevicesArrayAdapter;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    // Get the local Bluetooth adapter
    mBtAdapter = BluetoothAdapter.getDefaultAdapter();
    mBtAdapter.startDiscovery();

}
}

错误是

07-26 13:21:52.178: ERROR/AndroidRuntime(4962): ERROR: thread attach failed
07-26 13:21:53.518: ERROR/ActivityManager(117): fail to set top app changed!
07-26 13:21:53.668: ERROR/AndroidRuntime(4970): ERROR: thread attach failed

请帮助！

Answer 1

您是否尝试过broadcastReceiver（），或者您可能在manifest.xml中缺少权限。