Android 2.2藍牙問題（採用BluetoothChat示例）

Question

我試圖從4天開始運行一個小應用程序。我正在使用BluetoothChat的代碼來檢查BT是否啓用。如果沒有，它應該顯示啓用對話框。 我嘗試在HTC野火運行代碼的Android 2.2

package com.example.testagain; 

import android.app.Activity; 
import android.os.Bundle; 
import android.bluetooth.BluetoothAdapter; 
import android.util.Log; 
import android.widget.Toast; 
import android.content.Intent; 


public class testit extends Activity { 
    /** Called when the activity is first created. */ 
    private static final String TAG = "BluetoothChat"; 
    private static final boolean D = true; 

    private BluetoothAdapter mBluetoothAdapter = null; 


    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     if(D) Log.e(TAG, "+++ ON CREATE +++"); 

     // Set up the window layout 
     setContentView(R.layout.main); 

     // Get local Bluetooth adapter 
     mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); 

     // If the adapter is null, then Bluetooth is not supported 
     if (mBluetoothAdapter == null) { 
      Toast.makeText(this, "Bluetooth is not available", Toast.LENGTH_LONG).show(); 
      finish(); 
      return; 
     } 
    } 

    @Override 
    public void onStart() { 
     super.onStart(); 
     if(D) Log.e(TAG, "++ ON START ++"); 

     // If BT is not on, request that it be enabled. 
     // setupChat() will then be called during onActivityResult 
     if (!mBluetoothAdapter.isEnabled()) { 
      Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); 
      startActivityForResult(enableIntent, 1); 
     // Otherwise, setup the chat session 
     } else { 
      Toast.makeText(this, "done!", Toast.LENGTH_LONG).show(); 
     } 
    } 

} 

凡在此代碼的錯誤？ 感謝您的幫助！ 基督教

Answer 1

添加

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

您AndroidManifest文件。