//新建BaseActivity 
public abstract class BaseActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_base);
    }
    public abstract void initView();
    public abstract void initData();
}

//主頁繼承BaseActivity,實現方法

public class MainActivity extends BaseActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    @Override
    public void initView() {

    }

    @Override
    public void initData() {

    }
}