Android以编程方式连接到蓝牙 [英] Android connect to bluetooth programmatically

问题描述

大家好，



我有这个代码以编程方式连接蓝牙，但每当我点击它并打开蓝牙时，应用程序意外停止。这是我的代码。谢谢！

  if （mBluetoothAdapter == null）{
  //  准备警报框 
 AlertDialog.Builder alertbox =  new  AlertDialog.Builder（ this ）; 
 alertbox.setTitle（ 蓝牙权限请求）; 
 
  //  设置要显示的消息 
 alertbox.setMessage （ 你想打开蓝牙吗？）; 
 
  //  设置肯定/是按钮并创建一个监听器 
 alertbox.setPositiveButton（ 是， new  DialogInterface.OnClickListener（）{
 
  //  点击按钮时执行某些操作 
  public   void  onClick（DialogInterface arg0， int  arg1）{
  //   Toast.makeText（getApplicationContext（），单击是按钮，Toast.LENGTH_SHORT.show（）;  
 Intent discoverableIntent =  new 意图（BluetoothAdap ter.ACTION_REQUEST_DISCOVERABLE）; 
 discoverableIntent.putExtra（BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION， 300 ）; 
 startActivity（discoverableIntent）; 
} 
}）; 

解决方案

查看这些..

http://stackoverflow.com/questions/3806536/how-to-enable- disable-bluetooth-programmatically-in-android [ ^ ]

http://stackoverflow.com/questions/6080818/need-to-programmatically-open-bluetooth-and-discover-devices-in-android [ ^

Hi All,

I have this code to connect bluetooth programmatically, but whenever i click it and open the bluetooth the app stopped unexpectedly. This is my code. Thanks!

if (mBluetoothAdapter == null) {
			// prepare the alert box                  
            AlertDialog.Builder alertbox = new AlertDialog.Builder(this);
            alertbox.setTitle("Bluetooth permission request");
             
            // set the message to display
            alertbox.setMessage("DO you wish to open your bluetooth?");
                     
            // set a positive/yes button and create a listener                   
            alertbox.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                 
                // do something when the button is clicked
                public void onClick(DialogInterface arg0, int arg1) {
                    //Toast.makeText(getApplicationContext(), "'Yes' button clicked", Toast.LENGTH_SHORT).show();
                	Intent discoverableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
                    discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
                    startActivity(discoverableIntent);
                }
            });

解决方案

See these..
http://stackoverflow.com/questions/3806536/how-to-enable-disable-bluetooth-programmatically-in-android[^]
http://stackoverflow.com/questions/6080818/need-to-programmatically-open-bluetooth-and-discover-devices-in-android[^]

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