Android 在另一个活动中调用活动并获取方法

我正在开发一个android应用程序，我有一个问题，希望你能帮我解决。 所以我有一个名为main的活动1和名为myown的活动2。在myown中，我有一个公共类，我想在MainActivity中调用它。以下是两项活动的代码：

MainActivity.java

---

将此添加到您的活动中

lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,long id) {


    //add this
       Intent launchActivity2 = new Intent(MainActivity.this, myown.class);
       MainActivity.this.startActivity(launchActivity2);
    //

    String item = ((TextView) view).getText().toString();
    Toast.makeText(getBaseContext(), item, Toast.LENGTH_SHORT).show();

    for (BluetoothDevice device : pairedDevices) {

      if ("bluetooth".equals(device.getName())) {
           Intent launchActivity2 = new Intent(MainActivity.this, myown.class);
           MainActivity.this.startActivity(launchActivity2);
           break;
      }

      if (BluetoothDevice.ACTION_ACL_CONNECTED.equals(true)) {
          Toast.makeText(getBaseContext(), "Connected",Toast.LENGTH_SHORT).show();
          //do nothing
      }else {
          Toast.makeText(getBaseContext(), "Unable to connect Light",Toast.LENGTH_SHORT).show();
      }
   view.setEnabled(false);

        }
    }
});

---

发送项目点击意向到另一个活动你能告诉我怎么做吗；方法你想在这里做lv.setOnItemClickListener吗？是的，很抱歉我就是这个意思，但是当我从myown活动调用a方法时，它说无法解析symbolconnectBT=new ConnectToBluetoothdiscoveredDevice；新ThreadconnectBT.start；例如，如果我在添加的代码下编写此代码

import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;

import java.io.IOException;
import java.util.UUID;

public class myown {
public class myOwnBroadcastReceiver extends BroadcastReceiver {

    ConnectToBluetooth connectBT;
    public BluetoothSocket scSocket;
    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        BluetoothDevice discoveredDevice =            intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
        connectBT = new ConnectToBluetooth(discoveredDevice);
        new Thread(connectBT).start();
    }

    class ConnectToBluetooth implements Runnable {
        private BluetoothDevice btShield;
        private BluetoothSocket mySocket = null;
        private UUID uuid = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");

        public  ConnectToBluetooth(BluetoothDevice bluetoothShield) {
            btShield = bluetoothShield;
            try {
                mySocket = btShield.createRfcommSocketToServiceRecord(uuid);
            } catch (IOException createSocketException) {

            }
        }

        @Override
        public void run() {


            try {

                mySocket.connect();
                scSocket = mySocket;
            } catch (IOException connectException) {

                try {
                    mySocket.close(); //try to close the socket
                } catch (IOException closeException) {
                }
                return;
            }
        }

        // Will allow you to get the socket from this class
        public BluetoothSocket getSocket() {
            return mySocket;
        }

        /* Will cancel an in-progress connection, and close the socket */
        public void cancel() {
            try {
                mySocket.close();
       } catch (IOException e) {
      }
     }
    }
   }
  }

lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,long id) {


    //add this
       Intent launchActivity2 = new Intent(MainActivity.this, myown.class);
       MainActivity.this.startActivity(launchActivity2);
    //

    String item = ((TextView) view).getText().toString();
    Toast.makeText(getBaseContext(), item, Toast.LENGTH_SHORT).show();

    for (BluetoothDevice device : pairedDevices) {

      if ("bluetooth".equals(device.getName())) {
           Intent launchActivity2 = new Intent(MainActivity.this, myown.class);
           MainActivity.this.startActivity(launchActivity2);
           break;
      }

      if (BluetoothDevice.ACTION_ACL_CONNECTED.equals(true)) {
          Toast.makeText(getBaseContext(), "Connected",Toast.LENGTH_SHORT).show();
          //do nothing
      }else {
          Toast.makeText(getBaseContext(), "Unable to connect Light",Toast.LENGTH_SHORT).show();
      }
   view.setEnabled(false);

        }
    }
});