问Android使用键盘上的完成按钮来单击按钮

EN

package com.michaelpeerman.probability;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnCancelListener;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import java.util.Random;

public class ProbabilityActivity extends Activity implements OnClickListener {

private Button submit;
ProgressDialog dialog;
int increment;
Thread background;
int heads = 0;
int tails = 0;

public void onCreate(Bundle paramBundle) {
    super.onCreate(paramBundle);
    setContentView(R.layout.main);
    submit = ((Button) findViewById(R.id.submit));
    submit.setOnClickListener(this);
}

public void onClick(View view) {
    increment = 1;
    dialog = new ProgressDialog(this);
    dialog.setCancelable(true);
    dialog.setMessage("Flipping Coin...");
    dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
    dialog.setProgress(0);
    EditText max = (EditText) findViewById(R.id.number);
    int maximum = Integer.parseInt(max.getText().toString());
    dialog.setMax(maximum);
    dialog.show();
    dialog.setOnCancelListener(new OnCancelListener(){

          public void onCancel(DialogInterface dialog) {

              background.interrupt();
              TextView result = (TextView) findViewById(R.id.result);
                result.setText("heads : " + heads + "\ntails : " + tails);


          }});


    background = new Thread(new Runnable() {
        public void run() {
            heads=0;
            tails=0;
            for (int j = 0; !Thread.interrupted() && j < dialog.getMax(); j++) {
                int i = 1 + new Random().nextInt(2);
                if (i == 1)
                    heads++;
                if (i == 2)
                    tails++;
                progressHandler.sendMessage(progressHandler.obtainMessage());
            }
        }
    });
    background.start();
}

Handler progressHandler = new Handler() {
    public void handleMessage(Message msg) {

        dialog.incrementProgressBy(increment);
        if (dialog.getProgress() == dialog.getMax()) {
            dialog.dismiss();
            TextView result = (TextView) findViewById(R.id.result);
            result.setText("heads : " + heads + "\ntails : " + tails);


        }
    }

};

}