Android App开发实战之实现微信记账本附源码超详细必须看

发布时间：2023-03-23 13:29:30 所属栏目：教程来源：

导读：好用的记账本必须具备两项基本功能。一项时记录新帐单，另一项时查看账单列表，其中账单的记录操作要求用户输入账单的明细要素，包括账单的发生时间，账单的收支类型，账单的交易金额，账单的事由描述等等，账单通常

好用的记账本必须具备两项基本功能。一项时记录新帐单，另一项时查看账单列表，其中账单的记录操作要求用户输入账单的明细要素，包括账单的发生时间，账单的收支类型，账单的交易金额，账单的事由描述等等，账单通常分月展示，每页显示单个月份的账单数据，还要支持在不同月份之间切换，每月的账单数据按照时间从上往下排列，然后列表末尾展示当月的账单合计情况。
package com.example.chapter08;
import android.app.DatePickerDialog;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import com.example.chapter08.bean.BillInfo;
import com.example.chapter08.database.BillDBHelper;
import com.example.chapter08.util.DateUtil;
import com.example.chapter08.util.ViewUtil;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
public class BillAddActivity extends AppCompatActivity implements
RadioGroup.OnCheckedchangelistener,View.OnClickListener,DatePickerDialog.OnDateSetListener {
private final static String TAG = "BillAddActivity";
private TextView tv_date;
private RadioButton rb_income;
private RadioButton rb_expand;
private EditText et_desc;
private EditText et_amount;
private int mBillType = 1; // 账单类型。0 收入；1 支出
private int xuhao; // 如果序号有值，说明已存在该账单
private Calendar calendar = Calendar.getInstance(); // 获取日历实例，里面包含了当前的年月日
private BillDBHelper mBillHelper; // 声明一个账单数据库的帮助器对象
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_bill_add);
TextView tv_title = findViewById(R.id.tv_title);
TextView tv_option = findViewById(R.id.tv_option);
tv_date = findViewById(R.id.tv_date);
RadioGroup rg_type = findViewById(R.id.rg_type);
rb_income = findViewById(R.id.rb_income);
rb_expand = findViewById(R.id.rb_expand);
et_desc = findViewById(R.id.et_desc);
et_amount = findViewById(R.id.et_amount);
tv_title.setText("请填写账单");
tv_option.setText("账单列表");
findViewById(R.id.iv_back).setonClickListener(this);
tv_option.setonClickListener(this);
tv_date.setonClickListener(this);
findViewById(R.id.btn_save).setonClickListener(this);
rg_type.setonCheckedchangelistener(this);
}
@Override
protected void onResume() {
super.onResume();
xuhao = getIntent().getIntExtra("xuhao",-1);
mBillHelper = BillDBHelper.getInstance(this); // 获取账单数据库的帮助器对象
if (xuhao != -1) { // 序号有值，就展示数据库里的账单详情
List<BillInfo> bill_list = (List<BillInfo>) mBillHelper.queryById(xuhao);
if (bill_list.size() > 0) { // 已存在该账单
BillInfo bill = bill_list.get(0); // 获取账单信息
Date date = DateUtil.formatString(bill.date);
Log.d(TAG,"bill.date="+bill.date);
Log.d(TAG,"year="+date.getYear()+",month="+date.getMonth()+",day="+date.getDate());
calendar.set(Calendar.YEAR,date.getYear()+1900);
calendar.set(Calendar.MONTH,date.getMonth());
calendar.set(Calendar.DAY_OF_MONTH,date.getDate());
if (bill.type == 0) { // 收入
rb_income.setChecked(true);
} else { // 支出
rb_expand.setChecked(true);
}
et_desc.setText(bill.desc); // 设置账单的描述文本
et_amount.setText(""+bill.amount); // 设置账单的交易金额
}
}
tv_date.setText(DateUtil.getDate(calendar)); // 设置账单的发生时间
}
@Override
public void onClick(View v) {
if (v.getId() == R.id.iv_back) {
finish(); // 关闭当前页面
} else if (v.getId() == R.id.tv_option) {
Intent intent = new Intent(this,BillPagerActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); // 设置启动标志
startActivity(intent); // 跳到账单列表页面
} else if (v.getId() == R.id.tv_date) {
// 构建一个日期对话框，该对话框已经集成了日期选择器。
// DatePickerDialog的第二个构造参数指定了日期监听器
DatePickerDialog dialog = new DatePickerDialog(this,this,calendar.get(Calendar.YEAR),// 年份
calendar.get(Calendar.MONTH),// 月份
calendar.get(Calendar.DAY_OF_MONTH)); // 日子
dialog.show(); // 显示日期选择对话框
} else if (v.getId() == R.id.btn_save) {
saveBill(); // 保存账单
}
}
@Override
public void onCheckedChanged(RadioGroup group,int checkedId) {
mBillType = (checkedId==R.id.rb_expand) ? 1 : 0;
}
@Override
public void onDateSet(DatePicker view,int year,int month,int dayOfMonth) {
calendar.set(Calendar.YEAR,year);
calendar.set(Calendar.MONTH,month);
calendar.set(Calendar.DAY_OF_MONTH,dayOfMonth);
tv_date.setText(DateUtil.getDate(calendar));
}
// 保存账单
private void saveBill() {
//ViewUtil.hideAllInputMethod(this); // 隐藏输入法软键盘
ViewUtil.hideOneInputMethod(this,et_amount); // 隐藏输入法软键盘
BillInfo bill = new BillInfo();
bill.xuhao = xuhao;
bill.date = tv_date.getText().toString();
bill.month = 100*calendar.get(Calendar.YEAR) + (calendar.get(Calendar.MONTH)+1);
bill.type = mBillType;
bill.desc = et_desc.getText().toString();
bill.amount = Double.parseDouble(et_amount.getText().toString());
mBillHelper.save(bill); // 把账单信息保存到数据库
Toast.makeText(this,"已添加账单",Toast.LENGTH_SHORT).show();
resetPage(); // 重置页面
}
// 重置页面
private void resetPage() {
calendar = Calendar.getInstance();
et_desc.setText("");
et_amount.setText("");
tv_date.setText(DateUtil.getDate(calendar));
}

}
查看类代码

package com.example.chapter08;
import android.app.DatePickerDialog;
import android.content.Intent;
import android.os.Bundle;
import android.util.TypedValue;
import android.view.View;
import android.widget.DatePicker;
import android.widget.TextView;
import androidx.appcompat.app.AppCompatActivity;
import androidx.viewpager.widget.PagerTabStrip;
import androidx.viewpager.widget.ViewPager;
import com.example.chapter08.adapter.BillPagerAdpater;
import com.example.chapter08.util.DateUtil;
import java.util.Calendar;
public class BillPagerActivity extends AppCompatActivity implements
View.OnClickListener,DatePickerDialog.OnDateSetListener,ViewPager.OnPagechangelistener {
private TextView tv_month;
private ViewPager vp_bill; // 声明一个翻页视图对象
private Calendar calendar = Calendar.getInstance(); // 获取日历实例，里面包含了当前的年月日
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_bill_pager);
TextView tv_title = findViewById(R.id.tv_title);
TextView tv_option = findViewById(R.id.tv_option);
tv_month = findViewById(R.id.tv_month);
tv_title.setText("账单列表");
tv_option.setText("添加账单");
findViewById(R.id.iv_back).setonClickListener(this);
tv_option.setonClickListener(this);
tv_month.setonClickListener(this);
tv_month.setText(DateUtil.getMonth(calendar));
// 从布局视图中获取名叫vp_bill的翻页视图
vp_bill = findViewById(R.id.vp_bill);
initViewPager(); // 初始化翻页视图
}
@Override
public void onClick(View v) {
if (v.getId() == R.id.iv_back) {
finish(); // 关闭当前页面
} else if (v.getId() == R.id.tv_option) {
Intent intent = new Intent(this,BillAddActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); // 设置启动标志
startActivity(intent); // 跳到账单填写页面
} else if (v.getId() == R.id.tv_month) {
// 构建一个日期对话框，该对话框已经集成了日期选择器。
// DatePickerDialog的第二个构造参数指定了日期监听器
DatePickerDialog dialog = new DatePickerDialog(this,// 月份
calendar.get(Calendar.DAY_OF_MONTH)); // 日子
dialog.show(); // 显示日期选择对话框
}
}
@Override
public void onDateSet(DatePicker view,dayOfMonth);
tv_month.setText(DateUtil.getMonth(calendar));
vp_bill.setCurrentItem(month); // 设置翻页视图显示第几页
}
// 初始化翻页视图
private void initViewPager() {
// 从布局视图中获取名叫pts_bill的翻页标签栏
PagerTabStrip pts_bill = findViewById(R.id.pts_bill);
// 设置翻页标签栏的文本大小
pts_bill.setTextSize(TypedValue.COMPLEX_UNIT_SP,17);
// 构建一个商品图片的翻页适配器
BillPagerAdpater adapter = new BillPagerAdpater(getSupportFragmentManager(),calendar.get(Calendar.YEAR));
vp_bill.setAdapter(adapter); // 设置翻页视图的适配器
vp_bill.setCurrentItem(calendar.get(Calendar.MONTH)); // 设置翻页视图显示第几页
vp_bill.addOnPagechangelistener(this); // 给翻页视图添加页面变更监听器
}
// 翻页状态改变时触发
public void onPageScrollStateChanged(int state) {}
// 在翻页过程中触发
public void onPageScrolled(int position,float ratio,int offset) {}
// 在翻页结束后触发
public void onPageSelected(int position) {
calendar.set(Calendar.MONTH,position);
tv_month.setText(DateUtil.getMonth(calendar));
}
}
适配器代码

package com.example.chapter08.adapter;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.TextView;
import com.example.chapter08.BillAddActivity;
import com.example.chapter08.R;
import com.example.chapter08.bean.BillInfo;
import com.example.chapter08.database.BillDBHelper;
import java.util.ArrayList;
import java.util.List;
public class Billlistadapter extends BaseAdapter implements AdapterView.OnItemClickListener,AdapterView.OnItemLongClickListener{
private static final String TAG = "Billlistadapter";
private Context mContext; // 声明一个上下文对象
private List<BillInfo> mBillList = new ArrayList<BillInfo>(); // 账单信息列表
public Billlistadapter(Context context,List<BillInfo> billList) {
mContext = context;
mBillList = billList;
}
@Override
public int getCount() {
return mBillList.size();
}
@Override
public Object getItem(int position) {
return mBillList.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position,View convertView,ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
// 根据布局文件item_bill.xml生成转换视图对象
convertView = LayoutInflater.from(mContext).inflate(R.layout.item_bill,null);
holder.tv_date = convertView.findViewById(R.id.tv_date);
holder.tv_desc = convertView.findViewById(R.id.tv_desc);
holder.tv_amount = convertView.findViewById(R.id.tv_amount);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
BillInfo bill = mBillList.get(position);
holder.tv_date.setText(bill.date);
holder.tv_desc.setText(bill.desc);
if (bill.date.equals("合计")) {
holder.tv_amount.setText(bill.remark);
} else {
holder.tv_amount.setText(String.format("%s%d元",bill.type==0?"收入":"支出",(int) bill.amount));
}
return convertView;
}
@Override
public void onItemClick(AdapterView<?> parent,View view,int position,long id) {
if (position >= mBillList.size()-1) { // 合计行不响应点击事件
return;
}
Log.d(TAG,"onItemClick position=" + position);
BillInfo bill = mBillList.get(position);
// 以下跳转到账单填写页面
Intent intent = new Intent(mContext,BillAddActivity.class);
intent.putExtra("xuhao",bill.xuhao); // 携带账单序号，表示已存在该账单
mContext.startActivity(intent); // 因为已存在该账单，所以跳过去实际会编辑账单
}
@Override
public boolean onItemLongClick(AdapterView<?> parent,final int position,long id) {
if (position >= mBillList.size()-1) { // 合计行不响应长按事件
return true;
}
Log.d(TAG,"onItemLongClick position=" + position);
BillInfo bill = mBillList.get(position); // 获得当前位置的账单信息
AlertDialog.Builder builder = new AlertDialog.Builder(mContext);
String desc = String.format("是否删除以下账单？\n%s %s%d %s",bill.date,(int) bill.amount,bill.desc);
builder.setMessage(desc); // 设置提醒对话框的消息文本
builder.setPositiveButton("是",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,int which) {
deleteBill(position); // 删除该账单
}
});
builder.setNegativeButton("否",null);
builder.create().show(); // 显示提醒对话框
return true;
}
// 删除该账单
private void deleteBill(int position) {
BillInfo bill = mBillList.get(position);
mBillList.remove(position);
notifyDataSetChanged(); // 通知适配器发生了数据变化
// 获得数据库帮助器的实例
BillDBHelper helper = BillDBHelper.getInstance(mContext);
helper.delete(bill.xuhao); // 从数据库删除指定序号的账单
}
public final class ViewHolder {
public TextView tv_date;
public TextView tv_desc;
public TextView tv_amount;
}
}
XML文件

<LinearLayout xmlns:android=""
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<include layout="@layout/title_booking" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_margin="5dp"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center|right"
android:text="账单日期："
android:textColor="@color/black"
android:textSize="17sp" />
<TextView
android:id="@+id/tv_date"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="2"
android:drawableRight="@drawable/arrow_down"
android:gravity="center"
android:textColor="@color/black"
android:textSize="17sp" />
</LinearLayout>
<RadioGroup
android:id="@+id/rg_type"
android:layout_width="match_parent"
android:layout_height="30dp"
android:layout_margin="5dp"
android:orientation="horizontal" >
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center|right"
android:text="账单类型："
android:textColor="@color/black"
android:textSize="17sp" />
<RadioButton
android:id="@+id/rb_income"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="left|center"
android:checked="false"
android:text="收入"
android:textColor="#000000"
android:textSize="17sp" />
<RadioButton
android:id="@+id/rb_expand"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="left|center"
android:checked="true"
android:text="支出"
android:textColor="#000000"
android:textSize="17sp" />
</RadioGroup>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_margin="5dp"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center|right"
android:text="事项说明："
android:textColor="@color/black"
android:textSize="17sp" />
<EditText
android:id="@+id/et_desc"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="2"
android:gravity="left|top"
android:background="@drawable/editext_selector"
android:textColor="@color/black"
android:textSize="17sp"
android:hint="请填写说明内容" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_margin="5dp"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center|right"
android:text="　　金额："
android:textColor="@color/black"
android:textSize="17sp" />
<EditText
android:id="@+id/et_amount"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="2"
android:background="@drawable/editext_selector"
android:inputType="number"
android:textColor="@color/black"
android:textSize="17sp"
android:hint="单位（元）" />
</LinearLayout>
<Button
android:id="@+id/btn_save"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="保　　存"
android:textColor="@color/black"
android:textSize="20sp" />
</LinearLayout>

<LinearLayout xmlns:android=""
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<include layout="@layout/title_booking" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:gravity="center|top"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center|right"
android:text="请选择月份："
android:textColor="@color/black"
android:textSize="17sp" />
<TextView
android:id="@+id/tv_month"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="2"
android:drawableRight="@drawable/arrow_down"
android:gravity="center"
android:textColor="@color/black"
android:textSize="17sp" />
</LinearLayout>
<androidx.viewpager.widget.ViewPager
android:id="@+id/vp_bill"
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.viewpager.widget.PagerTabStrip
android:id="@+id/pts_bill"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</androidx.viewpager.widget.ViewPager>
</LinearLayout>

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Android App开发实战之实现微信记账本附源码 超详细必须看

Android App开发实战之实现微信记账本附源码超详细必须看