如何从儿童活动中返回家庭活动？

Question

这是我的代码，我想点击app icon按钮进入Home活动。我的相同代码适用于HomeActivity按钮。

package com.coderbd.englishtutor;

import android.app.Activity;

import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageButton;


public class StudyActivity extends Activity implements OnClickListener{

Button app_icon_topBar;
ImageButton reset;
ImageButton settings;
ImageButton share;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_study);
    app_icon_topBar=(Button) findViewById(R.id.app_icon_topBar);
    reset=(ImageButton) findViewById(R.id.btn_Reset);
    settings=(ImageButton) findViewById(R.id.btn_Settings);
    share=(ImageButton) findViewById(R.id.btn_Share);

    app_icon_topBar.setOnClickListener(this);
    reset.setOnClickListener(this);
    settings.setOnClickListener(this);
    share.setOnClickListener(this);
}

public void onClick(View v) {

    switch(v.getId()){
    case R.id.app_icon_topBar:
        finish();
        setContentView(R.layout.another_home_activity);
        break;
    case R.id.btn_Reset:
        finish();
        setContentView(R.layout.activity_contact);
        break;
    case R.id.btn_Settings:
        finish();
        setContentView(R.layout.activity_help);
        break;
    case R.id.btn_Share:
        finish();
        setContentView(R.layout.activity_scores);
        break;
    default:
        finish();
        setContentView(R.layout.another_home_activity);
        break;  
    }
}

请帮帮我。