Fragment

--------------------------------------------------------------------------------------.//创建一个方法private void datas() {    findViewById(R.id.remen).setOnClickListener(this);    findViewById(R.id.fenlei).setOnClickListener(this);    findViewById(R.id.zuozhe).setOnClickListener(this);}//继承借口会重写方法public void onClick(View view) {    FragmentManager manager = getFragmentManager();    FragmentTransaction tion = manager.beginTransaction();    switch (view.getId()){        case R.id.fenlei:            tion.replace(R.id.fl,new Framage1());            break;        case R.id.remen:            tion.replace(R.id.fl,new Framage2());            break;        case R.id.zuozhe:            tion.replace(R.id.fl,new Framage3());            break;    }    tion.commit();}