Android自定義收銀鍵盤(原創) 效果圖：
源碼位址（github）
我的公衆号:
最近開發項目需要自定義收銀鍵盤，網上查了查都感覺不是太好，于是自己寫了一個，自定義的鍵盤主要是根據GridView+EditText結合來寫的。
1.GridView如下：
<GridView
android:inputType="numberDecimal"
android:editable="false"
android:layout_width="match_parent"
android:layout_height="0dp"
android:numColumns="4"
android:layout_weight="1"
android:id="@+id/gridview"></GridView>
2.然後自己寫了一個PayKeyAdapter，設定了鍵盤的文字和類型。
package com.example.qzs.keyboard_cash;
import android.content.Context;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class PayKeyAdapter extends BaseAdapter {
private Context mContext;
private Context context;
public PayKeyAdapter(Context context) {
this.context=context;
}
private String[] texts = {
//九宮格圖檔下方文字的設定
"1",
"2",
"3",
"清空",
"4",
"5",
"6",
"←",
"7",
"8",
"9",
"=",
".",
"0",
"+",
"收款",
};
private String[] types = {
//存放在text的tag中
"num",
"num",
"num",
"cancel",
"num",
"num",
"num",
"back",
"num",
"num",
"num",
"equal",
"point",
"num",
"plus",
"pay",
};
@Override
public int getCount() {
return texts.length;
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View view, ViewGroup viewgroup) {
ImgTextWrapper wrapper;
if(view==null) {
wrapper = new ImgTextWrapper();
LayoutInflater inflater = LayoutInflater.from(context);
view = inflater.inflate(R.layout.grid_menu_item_pay, null);
view.setTag(wrapper);
view.setPadding(3, 3, 3, 3); //每格的間距
} else {
wrapper = (ImgTextWrapper)view.getTag();
}
wrapper.textView = (TextView)view.findViewById(R.id.GridTextView);
wrapper.textView.setText(texts[position]);
wrapper.textView.setTag(types[position]);
if(types[position].equals("back")
|| types[position].equals("cancel")
|| types[position].equals("equal")){
wrapper.textView.setBackgroundResource(R.drawable.btn_cell_delete);
}else if(types[position].equals("pay")){
wrapper.textView.setBackgroundResource(R.drawable.btn_cell_pay);
wrapper.textView.setTextColor(Color.WHITE);
}
// wrapper.textView = (TextView)view.findViewById(R.id.GridItemText);
// wrapper.textView.setText(texts[position]);
// wrapper.textView.setTag(payTypes[position]);
return view;
}
class ImgTextWrapper {
ImageView imageView;
TextView textView;
}
}
3.核心的文法在GridView的setOnItemClickListener事件.
gridview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
String keyType = view.findViewById(R.id.GridTextView).getTag().toString();
String textValue = ((TextView)view.findViewById(R.id.GridTextView)).getText().toString();
String editText = editMemberAmount.getText().toString();
if(keyType.equals("num")){
//數字鍵
try{
String orgValue = numList.get(numIndex);
if(editText.equals("0")){
editMemberAmount.setText(textValue);
}else{
//小數點最多隻能後兩位
if(orgValue.equals("0.00")){
orgValue=textValue;
numList.set(numIndex, textValue);
editMemberAmount.setText(textValue);
return;
}
if(orgValue.lastIndexOf(".")!=-1 && orgValue.lastIndexOf(".")<orgValue.length()-2){
Toast.makeText(getApplicationContext(),"隻能輸入小數點後兩位",Toast.LENGTH_SHORT).show();
}else{
if(editText.length()>=18){
Toast.makeText(getApplicationContext(),"一次輸入算式無法超過18個字元",Toast.LENGTH_SHORT).show();
return;
}
int numLen = orgValue.length();
if(orgValue.lastIndexOf(".")!=-1){
numLen = orgValue.lastIndexOf(".")+1;
}
if(numLen==7){
Toast.makeText(getApplicationContext(),"收款金額不能超過7位數",Toast.LENGTH_SHORT).show();
}else{
numList.set(numIndex, orgValue+textValue);
editMemberAmount.setText(editText+textValue);
}
}
}
}catch(Exception e){
numIndex=0;
numList=new ArrayList<String>();
numList.add(textValue);
editMemberAmount.setText(textValue);
}
}
if(keyType.equals("back")){
//倒退
try{
if(editText.lastIndexOf("+") == editText.length()-1){
//最後為加則減少一位
numList.set(numIndex,"");
numIndex--;
editMemberAmount.setText(editText.substring(0,editText.length()-1));
}else{
String orgValue = numList.get(numIndex);
if(!orgValue.equals("")){
numList.set(numIndex, orgValue.substring(0,orgValue.length()-1));
}
if(editText.equals("0")||editText.length()==1){
editMemberAmount.setText("0.00");
numList.set(numIndex,"0.00");
}else{
editMemberAmount.setText(editText.substring(0,editText.length()-1));
}
}
}catch(Exception e){
numIndex=0;
numList=new ArrayList<String>();
numList.add("0");
editMemberAmount.setText("");
}
}
if(keyType.equals("point")){
//小數點
try{
String orgValue = numList.get(numIndex);
if(orgValue.lastIndexOf(".")!=-1){
Toast.makeText(getApplicationContext(),"已存在小數點",Toast.LENGTH_SHORT).show();
}else{
if(editText.lastIndexOf("+") == editText.length()-1){
//最後為加則補0
numList.set(numIndex, orgValue+"0"+textValue);
editMemberAmount.setText(editText+"0"+textValue);
}else{
numList.set(numIndex, orgValue+textValue);
editMemberAmount.setText(editText+textValue);
}
}
}catch(Exception e){
numIndex=0;
numList=new ArrayList<String>();
numList.add("0.");
editMemberAmount.setText("0.");
}
}
if(keyType.equals("plus")){
//加
try{
if(editText.lastIndexOf("+") == editText.length()-1){
//最後為加則不處理
}else{
numIndex++;
numList.add("");
editMemberAmount.setText(editText+textValue);
}
}catch(Exception e){
numIndex=0;
numList=new ArrayList<String>();
numList.add("0");
editMemberAmount.setText("");
}
}
if(keyType.equals("cancel")){
//清空
//确認是否清空
AlertDialog.Builder clearBuilder = new AlertDialog.Builder(MainActivity.this);// 添加按鈕的單擊事件
clearBuilder.setMessage("是否确認要清空目前收款資料?")
. // 設定确定按鈕
setPositiveButton("确定",
new DialogInterface.OnClickListener() {
// 單擊事件
public void onClick(
DialogInterface dialog,
int which) { // 設定TextView文本
clearInputData();
}
})
. // 設定取消按鈕
setNegativeButton("取消",
new DialogInterface.OnClickListener() {
public void onClick(
DialogInterface dialog,
int which) {
}
}); // 建立對話框
AlertDialog ad = clearBuilder.create(); // 顯示對話框
ad.show();
}
if(keyType.equals("equal")||keyType.equals("pay")){
//等于
try{
double sum = 0.0;
for(String value :numList){
if(!value.equals("")){
sum+= Double.parseDouble(value)+0.00d;
}
}
String sumStr=new DecimalFormat("##.##").format(sum);
if(!sumStr.contains(".")){
sumStr+=".00";
}
if(sumStr.substring(sumStr.lastIndexOf(".")+1).length()<2){
sumStr+="0";
}
numIndex=0;
numList=new ArrayList<String>();
numList.add(sumStr);
editMemberAmount.setText(sumStr);
}catch(Exception e){
numIndex=0;
numList=new ArrayList<String>();
numList.add("0");
editMemberAmount.setText("");
}
}
if(keyType.equals("pay")){
//收款
if (editMemberAmount.getText().toString().length() < 1||editMemberAmount.getText().toString().equals("0.00") || editMemberAmount.getText().toString().equals("0")) {
Toast.makeText(getApplicationContext(),"請輸入金額",Toast.LENGTH_SHORT).show();
return;
}else {
Toast.makeText(getApplicationContext(),"收款成功",Toast.LENGTH_SHORT).show();
}
}
}
});
4.具體的完整項目請通路我的github，位址在上方已貼出.