RELATEED CONSULTING
相关咨询
选择下列产品马上在线沟通
服务时间:8:30-17:00
你可能遇到了下面的问题
关闭右侧工具栏

新闻中心

这里有您想知道的互联网营销解决方案
Android如何实现购物车加减功能

这篇文章主要为大家展示了Android如何实现购物车加减功能,内容简而易懂,希望大家可以学习一下,学习完之后肯定会有收获的,下面让小编带大家一起来看看吧。

创新互联网站设计,为客户量身定制各类网站建设业务,包括企业型、电子商务型、响应式网站建设、行业门户型等各类网站,实战经验丰富,成功案例众多。以客户利益为出发点,创新互联网站制作为客户规划、按需定制网站符合企业需求、带有营销价值的网络建站方案认真对待每一个客户,我们不用口头的语言来吹擂我们的优秀,上千家的成功案例见证着我们的成长。

Android 实现购物车加减功能,效果图如下所示:

Android如何实现购物车加减功能

public class adderView extends LinearLayout implements View.OnClickListener, TextWatcher {
 private int amount = 0; //购买数量
 private int goods_storage = Integer.MAX_VALUE; //商品库存
 private OnAmountChangeListener mListener;
 private EditText etAmount;
 private Button btnDecrease;
 private Button btnIncrease;
 public adderView(Context context) {
  this(context, null);
 }
 public adderView(Context context, AttributeSet attrs) {
  super(context, attrs);
  LayoutInflater.from(context).inflate(R.layout.number_adder, this);
  etAmount = (EditText) findViewById(R.id.etAmount);
  btnDecrease = (Button) findViewById(R.id.btnDecrease);
  btnIncrease = (Button) findViewById(R.id.btnIncrease);
  btnDecrease.setOnClickListener(this);
  btnIncrease.setOnClickListener(this);
  etAmount.addTextChangedListener(this);
  TypedArray obtainStyledAttributes = getContext().obtainStyledAttributes(attrs, R.styleable.AmountView);
  int btnWidth = obtainStyledAttributes.getDimensionPixelSize(R.styleable.AmountView_btnWidth, 100);
  int tvWidth = obtainStyledAttributes.getDimensionPixelSize(R.styleable.AmountView_tvWidth, 200);
  int tvTextSize = obtainStyledAttributes.getDimensionPixelSize(R.styleable.AmountView_tvTextSize, 0);
  int btnTextSize = obtainStyledAttributes.getDimensionPixelSize(R.styleable.AmountView_btnTextSize, 0);
  obtainStyledAttributes.recycle();
  LayoutParams btnParams = new LayoutParams(btnWidth, LayoutParams.MATCH_PARENT);
  btnDecrease.setLayoutParams(btnParams);
  btnIncrease.setLayoutParams(btnParams);
  if (btnTextSize != 0) {
   btnDecrease.setTextSize(TypedValue.COMPLEX_UNIT_PX, btnTextSize);
   btnIncrease.setTextSize(TypedValue.COMPLEX_UNIT_PX, btnTextSize);
  }
  LayoutParams textParams = new LayoutParams(tvWidth, LayoutParams.MATCH_PARENT);
  etAmount.setLayoutParams(textParams);
  if (tvTextSize != 0) {
   etAmount.setTextSize(tvTextSize);
  }
 }
 public void setOnAmountChangeListener(OnAmountChangeListener onAmountChangeListener) {
  this.mListener = onAmountChangeListener;
 }
 public void setGoods_storage(int goods_storage) {
  this.goods_storage = goods_storage;
 }
 public void setTextCount(int count){
  this.amount = count;
  this.etAmount.setText(amount+"");
 }
 @Override
 public void onClick(View v) {
  int i = v.getId();
  if (i == R.id.btnDecrease) {
   if (amount > 0) {
    amount--;
    etAmount.setText(amount + "");
   }
  } else if (i == R.id.btnIncrease) {
   if (amount < goods_storage) {
    amount++;
    etAmount.setText(amount + "");
   }
  }
  etAmount.clearFocus();
  if (mListener != null) {
   mListener.onAmountChange(this, amount);
  }
 }
 @Override
 public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 }
 @Override
 public void onTextChanged(CharSequence s, int start, int before, int count) {
 }
 @Override
 public void afterTextChanged(Editable s) {
  if (s.toString().isEmpty())
   return;
  amount = Integer.valueOf(s.toString());
  if (amount > goods_storage) {
   etAmount.setText(goods_storage + "");
   return;
  }
  if (amount == 0){
//   btnDecrease.setBackgroundResource(R.drawable.jian);
  }
  if (amount > 0){
//   btnDecrease.setBackgroundResource(R.drawable.lvjian);
  }
  if (mListener != null) {
   mListener.onAmountChange(this, amount);
  }
 }
 public interface OnAmountChangeListener {
  void onAmountChange(View view, int amount);
 }
<?xml version="1.0" encoding="utf-8"?>

 

以上就是关于Android如何实现购物车加减功能的内容,如果你们有学习到知识或者技能,可以把它分享出去让更多的人看到。


名称栏目:Android如何实现购物车加减功能
URL地址:http://lswzjz.com/article/gojopp.html