安卓开发实战-记账本APP（四）

今天实现的内容有：添加账本信息，个人头像的切换，密码的修改，退出登录。

添加账本信息有三个功能：

①记一笔支出项目

②记一笔收入项目

③清空所有项目

在此期间遇到的困难有：Activity与Fragment之间数值的传递问题，我利用Bundle对象来进行传值，但是布局文件中fragment里的name=“Account_Fragment”，这里暂时没有想到如何传值。

因此暂时将name="Find_Message"这个还未改变的一个fragment，当再次点击Account图标时，就可以传进去参数。

未解决的事：

①记完账本后，按日期排序一直不对

②初始Fragment没办法传参

明天要做的事：

先将上述问题解决，在设置长按项目进行单独删除。

统计总的收入与支出的对比

找到合适的图标进行替换

学习hellochart，将数据以饼状图展示。

今日成果：

点击更换头像：会有几个头像供选择

当点击后自动跳回个人信息界面：

其次是更换密码：需要输入原密码与新密码

再者就是记账的页面：有支出，收入，删除所有，支出的会显示红色，收入的会显示绿色

当点击收入时，会弹出一个框来进行记账

同理，当点击支出时，也会弹出一个框

当点击删除所有时，会将所有账目全部删除。

Account_Fragment：记账的Fragment

package com.example.countbook;

import android.app.AlertDialog;
import android.app.Fragment;
import android.content.DialogInterface;
import android.database.Cursor;
import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.RadioButton;

import androidx.annotation.Nullable;

import java.util.ArrayList;
import java.util.List;

public class Account_Fragment extends Fragment {
    private List<Account> list;
    private AccountOperator accountOperator;
    private AccountAdapter accountAdapter;
    Button btn_shouru;
    Button btn_zhichu;
    Button btn_delete;
    Bundle bundle;
    String username;
    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        bundle=getArguments();
        username=bundle.getString("username");
        //Log.i("username",username);
    }
    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
        View view=inflater.inflate(R.layout.account_fragment,null);
        btn_shouru=(Button)view.findViewById(R.id.btn_shouru);
        btn_zhichu=(Button)view.findViewById(R.id.btn_zhichu);
        btn_delete=(Button)view.findViewById(R.id.btn_delete);

        accountOperator=new AccountOperator(view.getContext());
        list=new ArrayList<>();
        ListView AccountList=(ListView)view.findViewById(R.id.lv_main);
        inin(username);
        accountAdapter=new AccountAdapter(view.getContext(),list);
        AccountList.setAdapter(accountAdapter);
        btn_zhichu.setOnClickListener(l);
        btn_shouru.setOnClickListener(l);
        btn_delete.setOnClickListener(l);
        return view;
    }
    View.OnClickListener l=new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            switch (v.getId()){
                case R.id.btn_zhichu:
                    AlertDialog.Builder builder=new AlertDialog.Builder(getView().getContext());
                    LayoutInflater inflater=LayoutInflater.from(getView().getContext());
                    View viewDialog=inflater.inflate(R.layout.new_cost_data,null);
                    final EditText content=(EditText)viewDialog.findViewById(R.id.et_cost_content);
                    final DatePicker data=(DatePicker)viewDialog.findViewById(R.id.dp_cost_data);
                    final EditText money=(EditText)viewDialog.findViewById(R.id.et_cost_money);
                    final RadioButton rb1=(RadioButton)viewDialog.findViewById(R.id.rb1);
                    final RadioButton rb2=(RadioButton)viewDialog.findViewById(R.id.rb2);
                    final RadioButton rb3=(RadioButton)viewDialog.findViewById(R.id.rb3);
                    final RadioButton rb4=(RadioButton)viewDialog.findViewById(R.id.rb4);

                    builder.setView(viewDialog);
                    builder.setTitle("New Cost");
                    builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            Account bean=new Account();
                            bean.author=username;
                            bean.content=content.getText().toString();
                            bean.money=Integer.parseInt(money.getText().toString());
                            bean.date=data.getYear()+"-"+(data.getMonth()+1)+"-"+data.getDayOfMonth();
                            if(rb1.isChecked()){
                                bean.title=rb1.getText().toString();
                            }else if(rb2.isChecked()){
                                bean.title=rb2.getText().toString();
                            }else if(rb3.isChecked()){
                                bean.title=rb3.getText().toString();
                            }else if(rb4.isChecked()){
                                bean.title=rb4.getText().toString();
                            }
                            accountOperator.insert(bean);
                            list.add(bean);
                            accountAdapter.notifyDataSetChanged();
                        }
                    });
                    builder.setNegativeButton("Cancel",null);
                    builder.create().show();
                    break;

                case R.id.btn_shouru:
                    AlertDialog.Builder builder2=new AlertDialog.Builder(getView().getContext());
                    LayoutInflater inflater2=LayoutInflater.from(getView().getContext());
                    View viewDialog2=inflater2.inflate(R.layout.new_income_data,null);
                    final EditText content2=(EditText)viewDialog2.findViewById(R.id.et_income_content);
                    final DatePicker data2=(DatePicker)viewDialog2.findViewById(R.id.dp_income_data);
                    final EditText money2=(EditText)viewDialog2.findViewById(R.id.et_income_money);
                    final RadioButton frb1=(RadioButton)viewDialog2.findViewById(R.id.rb1);
                    final RadioButton frb2=(RadioButton)viewDialog2.findViewById(R.id.rb2);
                    final RadioButton frb3=(RadioButton)viewDialog2.findViewById(R.id.rb3);

                    builder2.setView(viewDialog2);
                    builder2.setTitle("New InCome");
                    builder2.setPositiveButton("OK", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            Account bean=new Account();
                            bean.author=username;
                            bean.content=content2.getText().toString();
                            bean.money=Integer.parseInt(money2.getText().toString());
                            bean.date=data2.getYear()+"-"+(data2.getMonth()+1)+"-"+data2.getDayOfMonth();
                            if(frb1.isChecked()){
                                bean.title=frb1.getText().toString();
                            }else if(frb2.isChecked()){
                                bean.title=frb2.getText().toString();
                            }else if(frb3.isChecked()){
                                bean.title=frb3.getText().toString();
                            }
                            accountOperator.insert(bean);
                            list.add(bean);
                            accountAdapter.notifyDataSetChanged();
                        }
                    });
                    builder2.setNegativeButton("Cancel",null);
                    builder2.create().show();
                    break;
                case R.id.btn_delete:
                    accountOperator.deleteall(username);
                    list.clear();
                    accountAdapter.notifyDataSetChanged();
                    break;

            }
        }
    };

    private void inin(String author) {
        Cursor cursor= (Cursor) accountOperator.findall(author);
        if(cursor!=null){
            while(cursor.moveToNext()){
                Account bean=new Account();
                bean.content=cursor.getString(cursor.getColumnIndex("content"));
                bean.money=cursor.getInt(cursor.getColumnIndex("money"));
                bean.date=cursor.getString(cursor.getColumnIndex("date"));
                bean.title=cursor.getString(cursor.getColumnIndex("title"));
                list.add(bean);
            }
            cursor.close();
        }
    }
}

原文地址：https://www.cnblogs.com/xiaofengzai/p/12293427.html