大二寒假作业之账本开发

今日完成了账本开发的统计功能，输入开始的月份与结束的月份，点击计算按扭就可以统计总支出、总收入和结余。

到此账本开发已经全部完成实现了，查询今天，当月，当年以及特定的日期范围内的收入、支出等。

添加账目，长按删除账目，统计特定日期范围内的总支出，总收入以及结余。下面为统计功能的代码部分及全部功能的截图：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:gravity="right">

        <Button android:id="@+id/btnCalculate"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="计算"
            android:textAllCaps="false">
        </Button>

    </LinearLayout>

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="从（年—月—日）"
        android:layout_marginTop="25dp">
    </TextView>

    <EditText android:id="@+id/txtReportFrom"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="date">
    </EditText>

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="到（年—月—日）"
        android:layout_marginTop="25dp">
    </TextView>

    <EditText android:id="@+id/txtReportTo"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="date">
    </EditText>

    <TextView android:id="@+id/txtReportIncome"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="25dp">
    </TextView>

    <TextView android:id="@+id/txtReportExpenditure"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="25dp">
    </TextView>

    <TextView android:id="@+id/txtReportSurplus"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="25dp">
    </TextView>

</LinearLayout>

public class ReportActivity extends AppCompatActivity implements View.OnClickListener,View.OnLongClickListener{
    private EditText txtFrom;
    private EditText txtTo;
    private TextView txtExpenditure;
    private TextView txtIncome;
    private TextView txtSurplus;
    private Button btnCalculate;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.report_layout);
        setTitle("统计");
        CDateTime dt=new CDateTime();
        txtFrom=(EditText)findViewById(R.id.txtReportFrom);
        txtFrom.setOnLongClickListener(this);
        txtFrom.setText(dt.toDateString());
        txtTo=(EditText)findViewById(R.id.txtReportTo);
        txtTo.setOnLongClickListener(this);
        txtTo.setText(dt.toDateString());
        txtExpenditure=(TextView)findViewById(R.id.txtReportExpenditure);
        txtIncome=(TextView)findViewById(R.id.txtReportIncome);
        txtSurplus=(TextView)findViewById(R.id.txtReportSurplus);
        btnCalculate=(Button)findViewById(R.id.btnCalculate);
        btnCalculate.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        if(v.getId()==R.id.btnCalculate){
            //整理日期
            long startTime=0L,endTime=0L;
            String sFrom=txtFrom.getText().toString().trim();
            String sTo=txtTo.getText().toString().trim();
            if(CDateTime.checkDateString(sFrom,"-")&&CDateTime.checkDateString(sTo,"-")){
                startTime=new CDateTime(sFrom,"-").startOfDay();
                endTime=new CDateTime(sTo,"-").endOfDay();
            }
            //显示计算结果
            CAccount acct=CAccount.getInstance(this,1);
            double incomeSum=acct.incomeSum(startTime,endTime);
            double expenditureSum=acct.expenditureSum(startTime,endTime);
            txtIncome.setText(String.format("%s:%.2f","总收入",incomeSum));
            txtExpenditure.setText(String.format("%s:%.2f","总支出",expenditureSum));
            txtSurplus.setText(String.format("%s:%.2f","结余",incomeSum-expenditureSum));
        }
    }

    @Override
    public boolean onLongClick(View v) {
        int vid=v.getId();
        if(vid==R.id.txtReportFrom){
            CDateTime dt=new CDateTime();
            DatePickerDialog dlg=new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener() {
                @Override
                public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
                    txtFrom.setText(String.format("%d-%d-%d",year,month+1,dayOfMonth));
                }
            },dt.year(),dt.month()-1,dt.day());
            dlg.show();
        }else if(vid==R.id.txtReportTo){
            CDateTime dt=new CDateTime();
            DatePickerDialog dlg=new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener() {
                @Override
                public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
                    txtTo.setText(String.format("%d-%d-%d",year,month+1,dayOfMonth));
                }
            },dt.year(),dt.month()-1,dt.day());
            dlg.show();
        }
        return false;
    }
}