多個Button綁定監聽事件,簡化代碼方法

package com.zhaoda.zxy.a1;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
public class indexActivity extends AppCompatActivity {
    //聲明
    private Button bt_mainActivity, bt_secondActivity;
    private ButtonLisetener listener;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_index);
        listener = new ButtonLisetener();//創建對象
        //把findviewbyid和setonclicklistener抽出來,單獨寫成方法,減少代碼冗餘性
        FindView();
        SetClicklistener();
    }

    private void FindView() {
        bt_mainActivity = (Button) findViewById(R.id.bt_MainActivity);
        bt_secondActivity = (Button) findViewById(R.id.bt_SecodActivity);
    }

    private void SetClicklistener() {
        bt_mainActivity.setOnClickListener(listener);
        bt_secondActivity.setOnClickListener(listener);

    }
  //創建一個類實現OnClickListener的方法
    private class ButtonLisetener implements View.OnClickListener {
        @Override
        public void onClick(View v) {
        //功能
            switch (v.getId()) {
                case R.id.bt_MainActivity:
                    Intent intent1=new Intent(indexActivity.this,MainActivity.class);
                    startActivity(intent1);

                    break;
                case R.id.bt_SecodActivity:
                    Intent intent2=new Intent(indexActivity.this,MainActivity.class);
                    startActivity(intent2);
                    break;
            }
        }
    }
}