Fastlib库来写一个 记账本demo

Fastlib库是一个多功能的android第三方库。为了能让使用者尽量使用所有的功能，我写一个记帐本的demo来让大家提升对Fastlib使用能力

看之前请先预习一下

数据库功能FastDatabase基础使用

数据库适配器基于FastDatabase适配器

封装弹窗多工具

Activity封装FastActivity

这个记账本要实现

1. 插入记录
2. 删除记录
3. 修改记录
4. 根据条件获取记录列表（当前仅时间过滤）

消费和收入记录实体类

public class Record implements Serializable{
    //主键并且自动增长
    @Database(keyPrimary = true,autoincrement = true)
    public int id;
    public double money;
    public long date; //使用long类型更好使用数据库过滤
    public String title;
    public String description;
}

创建和插入记录模块

/**
 * 创建消费或收入记录
 */
@ContentView(R.layout.act_create_record)
public class CreateRecordActivity extends FastActivity{
    public static final String ARG_SEL_RECORD="record"; //如果有这个参数说明是修改

    @Bind(R.id.titleBar)
    TitleBar mTitleBar;
    @Bind(R.id.description)
    EditText mDescription;
    @Bind(R.id.title)
    EditText mTitle;
    @Bind(R.id.money)
    EditText mMoney;
    @Bind(R.id.type)
    Spinner mAccountType;
    @Bind(R.id.time)
    TextView mTime;
    @LocalData(ARG_SEL_RECORD)
    Record mRecord;
    Calendar mCalendar=Calendar.getInstance();

    @Override
    protected void alreadyPrepared(){
        mTime.setText(String.format(Locale.getDefault(),"%d年%d月%d日",mCalendar.get(Calendar.YEAR),mCalendar.get(Calendar.MONTH)+1,mCalendar.get(Calendar.DAY_OF_MONTH)));
        mTitleBar.setOnLeftClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                finish();
            }
        });
        mTitleBar.setOnRightClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                createRecord();
            }
        });
        initIfChangeData();
    }

    /**
     * 如果是修改数据，将老数据填充
     */
    private void initIfChangeData(){
        if(mRecord!=null){
            DecimalFormat format=new DecimalFormat("#.##");
            mTime.setText(String.format(Locale.getDefault(),"%d年%d月%d日",mCalendar.get(Calendar.YEAR),mCalendar.get(Calendar.MONTH)+1,mCalendar.get(Calendar.DAY_OF_MONTH)));
            mDescription.setText(mRecord.description);
            mMoney.setText(format.format(mRecord.money));
            mTitle.append(mRecord.title);
        }
    }

    /**
     * 创建或修改记录
     */
    private void createRecord(){
        int accountType=mAccountType.getSelectedItemPosition(); //0为收入 1为支出
        String title=mTitle.getText().toString();
        String description=mDescription.getText().toString();
        String money=mMoney.getText().toString();

        if(TextUtils.isEmpty(title)){
            N.showShort(this,"没有输入标题");
            return;
        }
        if(TextUtils.isEmpty(money)){
            N.showShort(this,"没有输入钱");
            return;
        }
        Record record=mRecord==null?new Record():mRecord;
        record.money=Double.parseDouble(money)*(accountType==0?1:-1);
        record.date=mCalendar.getTimeInMillis();
        record.title=title;
        record.description=description;
        FastDatabase.getDefaultInstance(this).saveOrUpdate(record);
        //存到数据库成功后发送事件，关闭当前页面
        EventObserver.getInstance().sendEvent(new ERefreshList());
        finish();
    }

    /**
     * 修改记录时间
     */
    @Bind(R.id.time)
    private void changeTime(){
        DatePickerDialog dialog=new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener() {
            @Override
            public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth){
                mCalendar.set(year,monthOfYear,dayOfMonth);
                mTime.setText(String.format(Locale.getDefault(),"%d年%d月%d日",year,monthOfYear+1,dayOfMonth));
            }
        },mCalendar.get(Calendar.YEAR),mCalendar.get(Calendar.MONTH),mCalendar.get(Calendar.DAY_OF_MONTH));
        dialog.show();
    }
}

记录列表的适配器

/**
 * 记录适配器
 */
public class RecordAdapter extends DatabaseAdapter{
    private long mFilterDate; //某个年月的毫秒值

    public RecordAdapter(Context context){
        super(context,Record.class,R.layout.item,false);
        Calendar calendar=Calendar.getInstance();
        calendar.set(Calendar.DAY_OF_MONTH,1);
        calendar.set(Calendar.HOUR_OF_DAY,0);
        calendar.set(Calendar.MINUTE,0);
        calendar.set(Calendar.SECOND,0);
        mFilterDate=calendar.getTimeInMillis();
        refresh();
    }

    @Override
    protected void binding(int position, Record data, OldViewHolder holder){
        DecimalFormat decimalFormat=new DecimalFormat("#.##"); //最多保留两位
        TextView price=holder.getView(R.id.money);
        holder.setText(R.id.title,data.title);
        holder.setText(R.id.date,TimeUtil.dateToString(new Date(data.date),"MM月dd日")); //显示月日

        if(data.money >0) {
            price.setText("+"+decimalFormat.format(data.money));
            price.setTextColor(mContext.getResources().getColor(R.color.green_600));
        }
        else {
            price.setText(decimalFormat.format(data.money));
            price.setTextColor(mContext.getResources().getColor(R.color.red_600));
        }
    }

    @Override
    protected FastDatabase generateDB(boolean isRefresh){
        return FastDatabase.getDefaultInstance(mContext)
                .setFilter(And.condition(Condition.bigger("date",getStartTime())) //增加过滤条件起始时间
                        .and(Condition.smaller("date",getEndTime()))); //增加过滤条件结束时间
    }

    private long getStartTime(){
        Calendar calendar=Calendar.getInstance();
        calendar.setTime(new Date(mFilterDate));
        System.out.println("过滤起点:"+TimeUtil.dateToString(calendar.getTime(),"yyyy年MM月dd日"));
        return calendar.getTimeInMillis();
    }

    private long getEndTime(){
        Calendar calendar=Calendar.getInstance();
        calendar.setTime(new Date(mFilterDate));
        if(calendar.get(Calendar.MONTH)>=11){
            calendar.set(Calendar.YEAR,calendar.get(Calendar.YEAR)+1);
            calendar.set(Calendar.MONTH,0);
        }
        else calendar.set(Calendar.MONTH,calendar.get(Calendar.MONTH)+1);
        System.out.println("过滤终点:"+TimeUtil.dateToString(calendar.getTime(),"yyyy年MM月dd日"));
        return calendar.getTimeInMillis();
    }

    /**
     * 设置过滤时间.自动取毫秒值转换后的x月1号到下一个月1号
     * @param date
     */
    public void setFilterDate(long date){
        mFilterDate=date;
        refresh();
    }
}

记录列表

/**
 * 主Activity同时也是记录列表
 */
@ContentView(R.layout.act_main)
public class MainActivity extends FastActivity implements AdapterView.OnItemClickListener{
    @Bind(R.id.titleBar)
    TitleBar mTitleBar;
    @Bind(R.id.list)
    ListView mListView;
    @Bind(R.id.date)
    TextView mDate;
    @Bind(R.id.incomeCount)
    TextView mIncomeCount;
    @Bind(R.id.expenseCount)
    TextView mExpenseCount;
    @Bind(R.id.remain)
    TextView mRemain;
    RecordAdapter mAdapter;
    Calendar mCalendar;

    @Override
    protected void alreadyPrepared(){
        mListView.setAdapter(mAdapter=new RecordAdapter(this));
        mListView.setOnItemClickListener(this);
        mTitleBar.setOnRightClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v){
                startActivity(CreateRecordActivity.class);
            }
        });
        
	//初始化成当前月份1号0点0分0秒
        mCalendar=Calendar.getInstance();
        mCalendar.set(Calendar.DAY_OF_MONTH,1);
	mCalendar.set(Calendar.HOUR_OF_DAY,0);
	mCalendar.set(Calendar.MINUTE,0);
	mCalendar.set(Calendar.SECOND,0);
        refreshDataView();    }    /**     * 刷新数据     */    private void refreshDataView(){        DecimalFormat decimalFormat=new DecimalFormat("#.##");        
        Record incomeRecord=FastDatabase.getDefaultInstance(this)  //请求数据库
        .setFunctionCommand(new FunctionCommand("money", FunctionType.SUM,  //数据库叠加函数
                And.condition(Condition.bigger("money",0))  //增加过滤条件大于0元
                .and(Condition.bigger("date",mCalendar.getTimeInMillis()))  //增加过滤条件大于当前月份1号
                .and(Condition.smaller("date",getEndTime()))))  //增加过滤条件小于下个月1号
                .getFirst(Record.class);
        Record expenseRecord=FastDatabase.getDefaultInstance(this)                .setFunctionCommand(new FunctionCommand("money",FunctionType.SUM,And.condition(Condition.smaller("money",0))                        .and(Condition.bigger("date",mCalendar.getTimeInMillis()))                        .and(Condition.smaller("date",getEndTime()))))                .getFirst(Record.class);        double incomeCount=incomeRecord==null?0:incomeRecord.money;        double expenseCount=expenseRecord==null?0:expenseRecord.money;        mIncomeCount.setText("收入+"+decimalFormat.format(incomeCount));        mExpenseCount.setText("支出"+decimalFormat.format(expenseCount));        mRemain.setText("盈余:"+(incomeCount+expenseCount));        mDate.setText(String.format(Locale.getDefault(),"%d年%d月",mCalendar.get(Calendar.YEAR),mCalendar.get(Calendar.MONTH)+1));    }    @Override    public void onItemClick(AdapterView parent, View view, final int position, long id) {        final Record record=mAdapter.getItem(position);        FastDialog.showListDialog(new String[]{"修改","删除"}).show(getSupportFragmentManager(), new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which){                //0修改，1删除                if(which==0){                    Intent intent=new Intent(MainActivity.this,CreateRecordActivity.class);                    intent.putExtra(CreateRecordActivity.ARG_SEL_RECORD,record);                    startActivity(intent);                }                else{                    FastDialog.showMessageDialog("确定删除?",false).show(getSupportFragmentManager(), new DialogInterface.OnClickListener() {                        @Override                        public void onClick(DialogInterface dialog, int which) {                            FastDatabase.getDefaultInstance(MainActivity.this).delete(record);                            refreshList(null);                        }                    });                }            }        });    }    @Bind(R.id.date)    private void changeDateFilter(){        DatePickerDialog dialog=new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener() {            @Override            public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {                mCalendar.set(year,monthOfYear,1);                refreshDataView();                mAdapter.setFilterDate(mCalendar.getTimeInMillis());            }        },mCalendar.get(Calendar.YEAR),mCalendar.get(Calendar.MONTH),mCalendar.get(Calendar.DAY_OF_MONTH));        dialog.show();    }    /**     * 接收到数据列表刷新请求后开始刷新     * @param event 刷新请求事件     */    @Event    private void refreshList(ERefreshList event){        mAdapter.refresh();        refreshDataView();    }    private long getEndTime(){        Calendar calendar=Calendar.getInstance();        calendar.setTime(mCalendar.getTime());        if(calendar.get(Calendar.MONTH)>=11){            calendar.set(Calendar.YEAR,calendar.get(Calendar.YEAR)+1);            calendar.set(Calendar.MONTH,0);        }        else calendar.set(Calendar.MONTH,calendar.get(Calendar.MONTH)+1);        return calendar.getTimeInMillis();    }}

效果图