Question

我想创建一个始终在后台服务中运行的后台服务。当移动通过WI-FI与互联网连接时，它会注意到我。所以请帮助我..我是新手。感谢。

这是我的代码 -

public class MyService extends Service {
private static final String TAG = "My Service Demo";
Context _context;

@Override
public IBinder onBind(Intent intent) {
    return null;
}

@Override
public void onCreate() {
    Toast.makeText(this, "My Service Created", Toast.LENGTH_LONG).show();
    Log.d(TAG, "onCreate");

}

@Override
public void onDestroy() {
    Toast.makeText(this, "My Service Stopped", Toast.LENGTH_LONG).show();
    Log.d(TAG, "onDestroy");

}

@Override
public void onStart(Intent intent, int startid) {
    Toast.makeText(this, "My Service Started", Toast.LENGTH_LONG).show();
    Log.d(TAG, "onStart");

//为返回网络的ConnectivityManager类创建对象相关信息

        ConnectivityManager connectivity = (ConnectivityManager) _context.getSystemService(Context.CONNECTIVITY_SERVICE);

//如果连接对象不为空

        if (connectivity != null) {

 //Get network info - WIFI internet access

            NetworkInfo info = connectivity.getNetworkInfo(ConnectivityManager.TYPE_WIFI);

            if (info != null) {

//查看设备当前是否已连接到WIFI网络

                if (info.isConnected()) {
                    Toast.makeText(_context,"wi fi connected", Toast.LENGTH_SHORT).show();
                }

        }
        }
        }

}

如何制作监控wifi状态的后台服务

0 个答案: