想问一下最后一个方法为什么edittext值没变化?
package com.example.ms;
import android.content.Context;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.util.Log;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
/**
* Created by xue on 2017-11-22.
*/
public class AmountView extends LinearLayout implements View.OnClickListener, TextWatcher {
private static final String TAG = "AmountView";
private int amount = 0; //购买数量
private int goods_storage = 1; //商品库存
public static final int MSG_COUNT_OK = 1;// 获取购物车中商品的数量
private OnAmountChangeListener mListener;
private int num=0;
private EditText etAmount;
private Button btnDecrease;
private Button btnIncrease;
public AmountView(Context context) {
super(context);
}
public AmountView(Context context, AttributeSet attrs) {
super(context, attrs);
LayoutInflater.from(context).inflate(R.layout.number_add, 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, LayoutParams.WRAP_CONTENT);
int tvWidth = obtainStyledAttributes.getDimensionPixelSize(R.styleable.AmountView_tvWidth, 80);
int tvTextSize = obtainStyledAttributes.getDimensionPixelSize(R.styleable.AmountView_tvTextSize, 0);
int btnTextSize = obtainStyledAttributes.getDimensionPixelSize(R.styleable.AmountView_btnTextSize, 0);
obtainStyledAttributes.recycle();
//重新定义按钮布局大小
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);
}
}
//商品数量变化
public void setOnAmountChangeListener(OnAmountChangeListener onAmountChangeListener) {
this.mListener = onAmountChangeListener;
}
//库存数量
public void setGoods_storage(int goods_storage) {
this.goods_storage = goods_storage;
}
@Override
public void onClick(View v) {
int i = v.getId();//判断是加是减
if (i == R.id.btnDecrease) {
if (amount > 0) {
amount--;
Log.d(TAG, "onClick:===== "+amount);
etAmount.setText(amount + "");
}
} else if (i == R.id.btnIncrease) {
if (amount < goods_storage) {
amount++;
etAmount.setText(amount + "");
}
}
//清除焦点
etAmount.clearFocus();
//改变数量值
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) {
}
//变化后的数量值
@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 (mListener != null) {
mListener.onAmountChange(this, amount);
}
}
public interface OnAmountChangeListener {
void onAmountChange(View view, int amount);
}
// 添加一个公共方法来设置EditText的值
public void setAmountText(String text) {
num=Integer.parseInt(text);
System.out.println("2"+num);
etAmount.setText(num+"");
//改变数量值
if (mListener != null) {
System.out.println("3"+num);
mListener.onAmountChange(this, num);
System.out.println("4"+num);
}
}
}