自定义view加减框

package soexample.umeng.com.shopcar;

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

/**

• author:AbnerMing

• date:2018/10/24
  */
  public class ShopCarPriceLayout extends RelativeLayout implements View.OnClickListener {
  private EditText editCar;

  public ShopCarPriceLayout(Context context) {
  super(context);
  init(context);
  }

  public ShopCarPriceLayout(Context context, AttributeSet attrs) {
  super(context, attrs);
  init(context);
  }

  public ShopCarPriceLayout(Context context, AttributeSet attrs, int defStyleAttr) {
  super(context, attrs, defStyleAttr);
  init(context);
  }

  private Context context;
  private void init(Context context) {
  this.context=context;
  View view=View.inflate(context,R.layout.shop_car_price_layout,null);
  ImageView addIamge=(ImageView) view.findViewById(R.id.add_car);
  ImageView jianIamge=(ImageView) view.findViewById(R.id.jian_car);
  editCar=(EditText) view.findViewById(R.id.edit_shop_car);
  addIamge.setOnClickListener(this);
  jianIamge.setOnClickListener(this);
  addView(view);
  }

  private int num;
  @Override
  public void onClick(View view) {
  switch (view.getId()){
  case R.id.add_car://增加
  num++;
  editCar.setText(num+"");
  list.get(position).setNum(num);
  listener.callBack();
  shopSellerCarAdapter.notifyItemChanged(position);
  break;
  case R.id.jian_car://减
  if(num>1){
  num–;
  }else{
  toast(“我是有底线的啊”);
  }
  editCar.setText(num+"");
  list.get(position).setNum(num);
  listener.callBack();
  shopSellerCarAdapter.notifyItemChanged(position);
  break;
  }
  }

  private void toast(String msg){
  Toast.makeText(context,msg,Toast.LENGTH_LONG).show();
  }

  //传递的数据
  private List<ShopBean.DataBean.ListBean> list=new ArrayList<>();
  private int position;
  private ShopSellerCarAdapter shopSellerCarAdapter;
  public void setData(ShopSellerCarAdapter shopSellerCarAdapter, List<ShopBean.DataBean.ListBean> list, int i) {
  this.list=list;
  this. shopSellerCarAdapter=shopSellerCarAdapter;
  position=i;
  num= list.get(i).getNum();
  editCar.setText(num+"");
  }

  private CallBackListener listener;
  public void setOnCallBack(CallBackListener listener){
  this.listener=listener;
  }

  public interface CallBackListener{
  void callBack();
  }
  }