activity的工具类

import android.os.Bundle;import android.os.PersistableBundle;import android.support.v7.app.AppCompatActivity;import android.util.Log;import android.widget.Toast;/** * Created by e531 on 2017/10/17. */public abstract class BaseActivity extends AppCompatActivity {    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        Log.d("zzz","base:onCreate");        //设置内容视图        setContentView(getLayout());        initView();        setListener();        initData();    }    //获取布局的id    public  abstract int getLayout();    //查找页面上所有的组件    public abstract void initView();    //设置监听事件    public abstract void setListener();    //初使化数据    public abstract void initData();    //弹出吐司提示    public void getToast(String tip){        Toast.makeText(BaseActivity.this, tip, Toast.LENGTH_SHORT).show();    }}