一.修改本機藍牙設備的可見度
二.掃描周圍可用的藍牙設備
Eg:
一. 清单文件AdroidManifest.xml:
Java代码
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.se7en"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="8" />
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".MainActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-permission android:name="android.permission.BLUETOOTH"/>
<!-若需要管理蓝牙设备，如修改可见性，则需以下的权限->
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
</manifest>
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.se7en"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="8" />
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".MainActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-permission android:name="android.permission.BLUETOOTH"/>
<!-若需要管理蓝牙设备，如修改可见性，则需以下的权限->
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
</manifest>二. 布局文件:main.xml:
Java代码
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<Button
android:id="@+id/discoverButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="设置可见性"/>
<Button
android:id="@+id/scanButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="开始扫描"/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<Button
android:id="@+id/discoverButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="設置可見度"/>
<Button
android:id="@+id/scanButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="開始掃描"/>
</LinearLayout>
三. MainActivity:
JAVA代碼
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.CoNtext;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity {
private Button discoverButton = null;
private Button scanButton = null;
private BluetoothAdapter adapter = null;
private BluetoothReceiver bluetoothReceiver = null;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
adapter = BluetoothAdapter.getDefaultAdapter();
discoverButton = (Button)findViewById(R.id.discoverButton);
scanButton = (Button)findViewById(R.id.scanButton);
//修改藍牙設備的可見度
discoverButton.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View view) {
Intent discoverIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
//設置藍牙可見度，500表示可見時間（單位：秒），當值大於300時預設為300
discoverIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,500);
startActivity(discoverIntent);
}
});
scanButton.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
//開始掃描周圍藍牙設備，該方法是非同步調用並以廣播的機制返回，所以需要創建一個BroadcastReceiver來獲取資訊
adapter.startDiscovery();
}
});
//設定廣播接收的filter
IntentFilter intentFilter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
//創建藍牙廣播資訊的receiver
bluetoothReceiver = new BluetoothReceiver ();
//註冊廣播接收器
registerReceiver(bluetoothReceiver,intentFilter);
}
private class BluetoothReceiver extends BroadcastReceiver{
@Override
public void onReceive(CoNtext coNtext, Intent intent) {
//獲得掃描到的遠端藍牙設備
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
System.out.println(device.getAddress());
}
}
}
全站熱搜
留言列表
