目录
声明：
此项目为移植《Android开发从入门到精通》项目实战篇，此项目仅用于学习。书本项目是基于Eclipse 4.2.2 + Android 5.0
开发运行环境
- 操作系统：windows 10
- JDK环境：java 8
- 开发工具：Android Studio 4.2.2
- 开发语言：java、XML、SQL
- 数据库管理软件：SQLite 3
代码树
; dao层代码
DBOpenHelper.java
sql语句学习可参考
https://www.sqlite.org/cli.html
https://www.runoob.com/sqlite/sqlite-tutorial.html
public class DBOpenHelper extends SQLiteOpenHelper {
private static final int VERSION = 1;
private static final String DBNAME = "account.db";
public DBOpenHelper(Context context) {
super(context,DBNAME,null,VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("create table tb_outaccount (_id integer primary key,money decimal ,time varchar(10)," +
"type varchar(10),address varchar(100),mark varchar(200))");
db.execSQL("create table tb_inaccount (_id integer primary key,money decimal,time varchar(10)," +
"type varchar(10),handler varchar(100),mark varchar(200))");
db.execSQL("create table tb_pwd(password varchar(20))");
db.execSQL("create table tb_flag (_id integer primary key,flag varchar(200))");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
}
FlayDAO.java
public class FlagDAO {
private DBOpenHelper helper;
private SQLiteDatabase db;
public FlagDAO(Context context) {
helper = new DBOpenHelper(context);
db = helper.getWritableDatabase();
}
public void add(Tb_flag tb_flag) {
db.execSQL("insert into tb_flag (_id,flag) values (?,?)", new Object[]{
tb_flag.getid(), tb_flag.getFlag()});
}
public void update(Tb_flag tb_flag) {
db.execSQL("update tb_flag set flag = ? where _id = ?", new Object[]{
tb_flag.getFlag(), tb_flag.getid()});
}
@SuppressLint("Range")
public Tb_flag find(int id) {
Cursor cursor = db.rawQuery(
"select _id,flag from tb_flag where _id = ?",
new String[]{String.valueOf(id)});
if (cursor.moveToNext()) {
return new Tb_flag(cursor.getInt(cursor.getColumnIndex("_id")),
cursor.getString(cursor.getColumnIndex("flag")));
}
cursor.close();
return null;
}
public void delete(Integer... ids) {
if (ids.length > 0) {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < ids.length; i++) {
sb.append('?').append(',');
}
sb.deleteCharAt(sb.length() - 1);
db.execSQL("delete from tb_flag where _id in (" + sb + ")",
(Object[]) ids);
}
}
@SuppressLint("Range")
public List<Tb_flag> getScrollData(int start, int count) {
List<Tb_flag> lisTb_flags = new ArrayList<Tb_flag>();
Cursor cursor = db.rawQuery("select * from tb_flag limit ?,?",
new String[]{String.valueOf(start), String.valueOf(count)});
while (cursor.moveToNext()) {
lisTb_flags.add(new Tb_flag(cursor.getInt(cursor
.getColumnIndex("_id")), cursor.getString(cursor
.getColumnIndex("flag"))));
}
cursor.close();
return lisTb_flags;
}
public long getCount() {
Cursor cursor = db.rawQuery("select count(_id) from tb_flag", null);
if (cursor.moveToNext()) {
return cursor.getLong(0);
}
cursor.close();
return 0;
}
public int getMaxId() {
Cursor cursor = db.rawQuery("select max(_id) from tb_flag", null);
while (cursor.moveToLast()) {
return cursor.getInt(0);
}
cursor.close();
return 0;
}
}
InAccountDAO.java
public class InAccountDAO {
private DBOpenHelper helper;
private SQLiteDatabase db;
public InAccountDAO(Context context) {
helper = new DBOpenHelper(context);
}
public void add(Tb_inAccount tb_inAccount) {
db = helper.getWritableDatabase();
db.execSQL("insert into tb_inaccount (_id,money,time,type,handler,mark) values (?,?,?,?,?,?)", new Object[]{
tb_inAccount.get_id(), tb_inAccount.getMoney(),
tb_inAccount.getTime(), tb_inAccount.getType(),
tb_inAccount.getHandler(), tb_inAccount.getMark()
});
}
public void update(Tb_inAccount tb_inAccount) {
db = helper.getWritableDatabase();
db.execSQL("update tb_inaccount set money = ? ,time = ? , type = ? , handler = ?,mark = ? where _id = ?", new Object[]{
tb_inAccount.getMark(), tb_inAccount.getTime(), tb_inAccount.getType(),
tb_inAccount.getHandler(), tb_inAccount.getMark(), tb_inAccount.get_id()
});
}
@SuppressLint("Range")
public Tb_inAccount find(int id) {
db = helper.getWritableDatabase();
Cursor cursor = db.rawQuery("select _id,money,time,type,handler,mark from tb_inaccount where _id = ?", new String[]{
String.valueOf(id)
});
if (cursor.moveToNext()) {
return new Tb_inAccount(cursor.getInt(cursor.getColumnIndex("_id")), cursor.getDouble(cursor.getColumnIndex("money")),
cursor.getString(cursor.getColumnIndex("time")), cursor.getString(cursor.getColumnIndex("type")),
cursor.getString(cursor.getColumnIndex("handler")), cursor.getString(cursor.getColumnIndex("mark")));
}
return null;
}
public Map<String, Float> getTotal() {
List<Tb_inAccount> tb_inaccount = new ArrayList<Tb_inAccount>();
db = helper.getWritableDatabase();
Cursor cursor = db.rawQuery("select type,sum(money) "
+ "from tb_inaccount group by type", null);
int count = 0;
count = cursor.getCount();
Map<String, Float> map = new HashMap<String, Float>();
cursor.moveToFirst();
for (int i = 0; i < count; i++) {
map.put(cursor.getString(0), cursor.getFloat(1));
System.out.println("收入：" + cursor.getString(0));
cursor.moveToNext();
}
cursor.close();
return map;
}
public void delete(Integer... ids) {
if (ids.length > 0) {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < ids.length; i++) {
sb.append('?').append(',');
}
sb.deleteCharAt(sb.length() - 1);
db = helper.getWritableDatabase();
db.execSQL("delete from tb_inaccount where _id in (" + sb + ")", (Object[]) ids);
}
}
@SuppressLint("Range")
public List<Tb_inAccount> getScrollData(int start, int count) {
List<Tb_inAccount> tb_inAccounts = new ArrayList<>();
db = helper.getWritableDatabase();
Cursor cursor = db.rawQuery("select * from tb_inaccount limit ?,?", new String[]{String.valueOf(start), String.valueOf(count)});
while (cursor.moveToNext()) {
tb_inAccounts.add(new Tb_inAccount(cursor.getInt(cursor.getColumnIndex("_id")), cursor.getDouble(cursor.getColumnIndex("money")),
cursor.getString(cursor.getColumnIndex("time")), cursor.getString(cursor.getColumnIndex("type")),
cursor.getString(cursor.getColumnIndex("handler")), cursor.getString(cursor.getColumnIndex("mark"))));
}
return tb_inAccounts;
}
public long getCount() {
db = helper.getWritableDatabase();
Cursor cursor = db.rawQuery("select count(_id) from tb_inaccount", null);
if (cursor.moveToNext()) {
return cursor.getLong(0);
}
return 0;
}
public int getMaxId() {
db = helper.getWritableDatabase();
Cursor cursor = db.rawQuery("select max(_id) from tb_inaccount", null);
while (cursor.moveToLast()) {
return cursor.getInt(0);
}
return 0;
}
}
OutAccountDAO.java
public class OutAccountDAO {
private DBOpenHelper helper;
private SQLiteDatabase db;
public OutAccountDAO(Context context) {
helper = new DBOpenHelper(context);
db = helper.getWritableDatabase();
}
public void add(Tb_outaccount tb_outaccount) {
db.execSQL(
"insert into tb_outaccount (_id,money,time,type,address,mark) values (?,?,?,?,?,?)",
new Object[]{tb_outaccount.getid(), tb_outaccount.getMoney(),
tb_outaccount.getTime(), tb_outaccount.getType(),
tb_outaccount.getAddress(), tb_outaccount.getMark()});
}
public void update(Tb_outaccount tb_outaccount) {
db.execSQL(
"update tb_outaccount set money = ?,time = ?,type = ?,address = ?,mark = ? where _id = ?",
new Object[]{tb_outaccount.getMoney(),
tb_outaccount.getTime(), tb_outaccount.getType(),
tb_outaccount.getAddress(), tb_outaccount.getMark(),
tb_outaccount.getid()});
}
@SuppressLint("Range")
public Tb_outaccount find(int id) {
Cursor cursor = db
.rawQuery(
"select _id,money,time,type,address,mark from tb_outaccount where _id = ?",
new String[]{String.valueOf(id)});
if (cursor.moveToNext()) {
return new Tb_outaccount(
cursor.getInt(cursor.getColumnIndex("_id")),
cursor.getDouble(cursor.getColumnIndex("money")),
cursor.getString(cursor.getColumnIndex("time")),
cursor.getString(cursor.getColumnIndex("type")),
cursor.getString(cursor.getColumnIndex("address")),
cursor.getString(cursor.getColumnIndex("mark")));
}
cursor.close();
return null;
}
public void delete(Integer... ids) {
if (ids.length > 0) {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < ids.length; i++) {
sb.append('?').append(',');
}
sb.deleteCharAt(sb.length() - 1);
db.execSQL("delete from tb_outaccount where _id in (" + sb + ")",
(Object[]) ids);
}
}
public Map<String, Float> getTotal() {
Cursor cursor = db.rawQuery("select type,sum(money) from tb_outaccount group by type", null);
int count = 0;
count = cursor.getCount();
Map<String, Float> map = new HashMap<String, Float>();
cursor.moveToFirst();
for (int i = 0; i < count; i++) {
map.put(cursor.getString(0), cursor.getFloat(1));
System.out.println("支出：" + cursor.getString(0) + cursor.getFloat(1));
cursor.moveToNext();
}
cursor.close();
return map;
}
@SuppressLint("Range")
public List<Tb_outaccount> getScrollData(int start, int count) {
List<Tb_outaccount> tb_outaccount = new ArrayList<Tb_outaccount>();
Cursor cursor = db.rawQuery("select * from tb_outaccount limit ?,?",
new String[]{String.valueOf(start), String.valueOf(count)});
while (cursor.moveToNext()) {
tb_outaccount.add(new Tb_outaccount(cursor.getInt(cursor
.getColumnIndex("_id")), cursor.getDouble(cursor
.getColumnIndex("money")), cursor.getString(cursor
.getColumnIndex("time")), cursor.getString(cursor
.getColumnIndex("type")), cursor.getString(cursor
.getColumnIndex("address")), cursor.getString(cursor
.getColumnIndex("mark"))));
}
cursor.close();
return tb_outaccount;
}
public long getCount() {
Cursor cursor = db.rawQuery("select count(_id) from tb_outaccount",
null);
if (cursor.moveToNext()) {
return cursor.getLong(0);
}
cursor.close();
return 0;
}
public int getMaxId() {
Cursor cursor = db.rawQuery("select max(_id) from tb_outaccount", null);
while (cursor.moveToLast()) {
return cursor.getInt(0);
}
cursor.close();
return 0;
}
}
PwdDAO.java
public class PwdDAO {
private DBOpenHelper helper;
private SQLiteDatabase db;
public PwdDAO(Context context) {
helper = new DBOpenHelper(context);
db = helper.getWritableDatabase();
}
public void add(Tb_pwd tb_pwd) {
db.execSQL("insert into tb_pwd (password) values (?)",
new Object[]{tb_pwd.getPassword()});
}
public void update(Tb_pwd tb_pwd) {
db.execSQL("update tb_pwd set password = ?",
new Object[]{tb_pwd.getPassword()});
}
@SuppressLint("Range")
public Tb_pwd find() {
Cursor cursor = db.rawQuery("select password from tb_pwd", null);
if (cursor.moveToNext()) {
return new Tb_pwd(cursor.getString(cursor
.getColumnIndex("password")));
}
cursor.close();
return null;
}
public long getCount() {
Cursor cursor = db.rawQuery("select count(password) from tb_pwd", null);
if (cursor.moveToNext()) {
return cursor.getLong(0);
}
cursor.close();
return 0;
}
}
model层代码
Tb_flag.java
public class Tb_flag {
private int _id;
private String flag;
public Tb_flag(){
super();
}
public Tb_flag(int id, String flag) {
super();
this._id = id;
this.flag = flag;
}
public int getid(){
return _id;
}
public void setid(int id){
this._id = id;
}
public String getFlag(){
return flag;
}
public void setFlag(String flag){
this.flag = flag;
}
}
Tb_inAccount.java
public class Tb_inAccount {
private int _id;
private double money;
private String time;
private String type;
private String handler;
private String mark;
public Tb_inAccount(){
super();
}
public Tb_inAccount(int _id, double money, String time, String type, String handler, String mark) {
super();
this._id = _id;
this.money = money;
this.time = time;
this.type = type;
this.handler = handler;
this.mark = mark;
}
public int get_id() {
return _id;
}
public double getMoney() {
return money;
}
public String getTime() {
return time;
}
public String getType() {
return type;
}
public String getHandler() {
return handler;
}
public String getMark() {
return mark;
}
public void set_id(int _id) {
this._id = _id;
}
public void setMoney(double money) {
this.money = money;
}
public void setTime(String time) {
this.time = time;
}
public void setType(String type) {
this.type = type;
}
public void setHandler(String handler) {
this.handler = handler;
}
public void setMark(String mark) {
this.mark = mark;
}
}
Tb_outAccount.java
public class Tb_outAccount {
private int _id;
private double money;
private String time;
private String type;
private String address;
private String mark;
public Tb_outAccount(){
super();
}
public Tb_outAccount(int id, double money, String time, String type,
String address, String mark) {
super();
this._id = id;
this.money = money;
this.time = time;
this.type = type;
this.address = address;
this.mark = mark;
}
public int getid(){
return _id;
}
public void setid(int id){
this._id = id;
}
public double getMoney(){
return money;
}
public void setMoney(double money){
this.money = money;
}
public String getTime(){
return time;
}
public void setTime(String time){
this.time = time;
}
public String getType(){
return type;
}
public void setType(String type){
this.type = type;
}
public String getAddress(){
return address;
}
public void setAddress(String address){
this.address = address;
}
public String getMark(){
return mark;
}
public void setMark(String mark){
this.mark = mark;
}
}
Tb_pwd.java
public class Tb_pwd {
private String password;
public Tb_pwd(){
super();
}
public Tb_pwd(String password){
super();
this.password = password;
}
public String getPassword(){
return password;
}
public void setPassword(String password){
this.password = password;
}
}
Activity层代码块
MainActivity.java
显示界面
public class MainActivity extends AppCompatActivity {
private final String[] titles = new String[]{"新增支出","新增收入","我的支出","我的收入","数据管理","系统设置","收入便签","帮助","退出"};
private final int[] images = new int[]{R.drawable.addoutaccount,R.drawable.addinaccount,
R.drawable.outaccountinfo,R.drawable.inaccountinfo,R.drawable.showinfo,
R.drawable.sysset,R.drawable.accountflag,R.drawable.help,R.drawable.exit};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
GridView gvInfo = findViewById(R.id.gvInfo);
pictureAdapter adapter = new pictureAdapter(titles, images, this);
gvInfo.setAdapter(adapter);
gvInfo.setOnItemClickListener((parent, view, position, id) -> {
Intent intent;
switch (position){
case 0:
intent = new Intent(MainActivity.this, AddOutAccount.class);
startActivity(intent);
break;
case 1:
intent = new Intent(MainActivity.this, AddInAccount.class);
startActivity(intent);
break;
case 2:
intent = new Intent(MainActivity.this, OutAccountInfo.class);
startActivity(intent);
break;
case 3:
intent = new Intent(MainActivity.this, InAccountInfo.class);
startActivity(intent);
break;
case 4:
intent = new Intent(MainActivity.this, Showinfo.class);
startActivity(intent);
break;
case 5:
intent = new Intent(MainActivity.this, Sysset.class);
startActivity(intent);
break;
case 6:
intent = new Intent(MainActivity.this, Accountflag.class);
startActivity(intent);
break;
case 7:
intent = new Intent(MainActivity.this, Help.class);
startActivity(intent);
break;
case 8:
finish();
System.exit(0);
}
});
}
static class pictureAdapter extends BaseAdapter {
private final LayoutInflater inflater;
private final List<Picture> pictures;
public pictureAdapter(String[] titles, int[] images, Context context) {
super();
pictures = new ArrayList<>();
inflater = LayoutInflater.from(context);
for (int i = 0; i < images.length; i++){
Picture picture = new Picture(titles[i], images[i]);
pictures.add(picture);
}
}
@Override
public int getCount() {
if (null != pictures) {
return pictures.size();
} else {
return 0;
}
}
@Override
public Object getItem(int arg0) {
return pictures.get(arg0);
}
@Override
public long getItemId(int arg0) {
return arg0;
}
@SuppressLint("InflateParams")
@Override
public View getView(int arg0, View arg1, ViewGroup arg2) {
ViewHolder viewHolder;
if (arg1 == null){
arg1 = inflater.inflate(R.layout.gvitem, null);
viewHolder = new ViewHolder();
viewHolder.title = arg1.findViewById(R.id.ItemTitle);
viewHolder.image = arg1.findViewById(R.id.ItemImage);
arg1.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) arg1.getTag();
}
viewHolder.title.setText(pictures.get(arg0).getTitle());
viewHolder.image.setImageResource(pictures.get(arg0).getImageId());
return arg1;
}
}
static class ViewHolder{
public TextView title;
public ImageView image;
}
static class Picture {
private String title;
private int imageId;
public Picture() {
super();
}
public Picture(String title, int imageId) {
super();
this.title = title;
this.imageId = imageId;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public int getImageId() {
return imageId;
}
public void setimageId(int imageId) {
this.imageId = imageId;
}
}
}
AddOutAccount.java
public class AddOutAccount extends Activity {
protected static final int DATE_DIALOG_ID = 0;
EditText txtMoney, txtTime, txtAddress, txtMark;
Spinner spType;
Button btnSaveButton;
Button btnCancelButton;
private int mYear;
private int mMonth;
private int mDay;
private int id;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.addoutaccount);
txtMoney = findViewById(R.id.txtMoney);
txtTime = findViewById(R.id.txtTime);
txtAddress = findViewById(R.id.txtAddress);
txtMark = findViewById(R.id.txtMark);
spType = findViewById(R.id.spType);
btnSaveButton = findViewById(R.id.btnSave);
btnCancelButton = findViewById(R.id.btnCancel);
txtTime.setOnClickListener(arg0 -> {
showDialog(DATE_DIALOG_ID);
});
btnSaveButton.setOnClickListener(arg0 -> {
String strMoney = txtMoney.getText().toString();
if (!strMoney.isEmpty()) {
OutAccountDAO outaccountDAO = new OutAccountDAO(
AddOutAccount.this);
Tb_outAccount tb_outaccount = new Tb_outAccount(
outaccountDAO.getMaxId() + 1, Double
.parseDouble(strMoney), txtTime
.getText().toString(), spType
.getSelectedItem().toString(),
txtAddress.getText().toString(), txtMark
.getText().toString());
outaccountDAO.add(tb_outaccount);
Toast.makeText(AddOutAccount.this, "〖新增支出〗数据添加成功！",
Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(AddOutAccount.this, "请输入支出金额！",
Toast.LENGTH_SHORT).show();
}
});
btnCancelButton.setOnClickListener(arg0 -> {
txtMoney.setText("");
txtMoney.setHint("0.00");
txtTime.setText("");
txtTime.setHint("2017-01-01");
txtAddress.setText("");
txtMark.setText("");
spType.setSelection(0);
});
final Calendar c = Calendar.getInstance();
mYear = c.get(Calendar.YEAR);
mMonth = c.get(Calendar.MONTH);
mDay = c.get(Calendar.DAY_OF_MONTH);
updateDisplay();
}
@Override
protected Dialog onCreateDialog(int id){
this.id = id;
switch (id) {
case DATE_DIALOG_ID:// 弹出日期选择对话框
return new DatePickerDialog(this, mDateSetListener, mYear, mMonth,
mDay);
}
return null;
}
private DatePickerDialog.OnDateSetListener mDateSetListener = new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear,
int dayOfMonth) {
mYear = year;
mMonth = monthOfYear;
mDay = dayOfMonth;
updateDisplay();
}
};
private void updateDisplay() {
txtTime.setText(new StringBuilder().append(mYear).append("-")
.append(mMonth + 1).append("-").append(mDay));
}
}
AddInAccount.java
public class AddInAccount extends Activity {
protected static final int DATE_DIALOG_ID = 0;
EditText txtInMoney, txtInTime, txtInHandler, txtInMark;
Spinner spInType;
Button btnInSaveButton;
Button btnInCancelButton;
private int mYear;
private int mMonth;
private int mDay;
@Override
public void onCreate( Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.addinaccount);
txtInMoney = findViewById(R.id.txtInMoney);
txtInTime = findViewById(R.id.txtInTime);
txtInHandler = findViewById(R.id.txtInHandler);
txtInMark = findViewById(R.id.txtInMark);
spInType = findViewById(R.id.spInType);
btnInSaveButton = findViewById(R.id.btnInSave);
btnInCancelButton = findViewById(R.id.btnInCancel);
txtInTime.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
showDialog(DATE_DIALOG_ID);
}
});
btnInSaveButton.setOnClickListener(arg0 -> {
String strInMoney = txtInMoney.getText().toString();
if (!strInMoney.isEmpty()) {
InAccountDAO inaccountDAO = new InAccountDAO(
AddInAccount.this);
Tb_inAccount tb_inaccount = new Tb_inAccount(
inaccountDAO.getMaxId() + 1, Double
.parseDouble(strInMoney), txtInTime
.getText().toString(), spInType
.getSelectedItem().toString(),
txtInHandler.getText().toString(),
txtInMark.getText().toString());
inaccountDAO.add(tb_inaccount);
Toast.makeText(AddInAccount.this, "〖新增收入〗数据添加成功！",
Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(AddInAccount.this, "请输入收入金额！",
Toast.LENGTH_SHORT).show();
}
});
btnInCancelButton.setOnClickListener(arg0 -> {
txtInMoney.setText("");
txtInMoney.setHint("0.00");
txtInTime.setText("");
txtInTime.setHint("2017-01-01");
txtInHandler.setText("");
txtInMark.setText("");
spInType.setSelection(0);
});
final Calendar c = Calendar.getInstance();
mYear = c.get(Calendar.YEAR);
mMonth = c.get(Calendar.MONTH);
mDay = c.get(Calendar.DAY_OF_MONTH);
updateDisplay();
}
@Override
protected Dialog onCreateDialog(int id){
switch (id) {
case DATE_DIALOG_ID:// 弹出日期选择对话框
return new DatePickerDialog(this, mDateSetListener, mYear, mMonth,
mDay);
}
return null;
}
private DatePickerDialog.OnDateSetListener mDateSetListener =
new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear,
int dayOfMonth) {
mYear = year;
mMonth = monthOfYear;
mDay = dayOfMonth;
updateDisplay();
}
};
private void updateDisplay() {
txtInTime.setText(new StringBuilder().append(mYear).append("-")
.append(mMonth + 1).append("-").append(mDay));
}
}
OutAccountInfo.java
public class OutAccountInfo extends Activity {
public static final String FLAG = "id";
ListView lvinfo;
String strType = "";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.outaccountinfo);
lvinfo = (ListView) findViewById(R.id.lvoutaccountinfo);
ShowInfo(R.id.btnoutinfo);
lvinfo.setOnItemClickListener(new AdapterView.OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
String strInfo = String.valueOf(((TextView) view).getText());
String strid = strInfo.substring(0, strInfo.indexOf('|'));
Intent intent = new Intent(OutAccountInfo.this,
InfoManage.class);
intent.putExtra(FLAG, new String[] { strid, strType });
startActivity(intent);
}
});
}
private void ShowInfo(int intType) {
String[] strInfos;
ArrayAdapter<String> arrayAdapter;
strType = "btnoutinfo";
OutAccountDAO outaccountinfo = new OutAccountDAO(OutAccountInfo.this);
List<Tb_outAccount> listoutinfos = outaccountinfo.getScrollData(0,
(int) outaccountinfo.getCount());
strInfos = new String[listoutinfos.size()];
int i = 0;
for (Tb_outAccount tb_outaccount : listoutinfos) {
strInfos[i] = tb_outaccount.getid() + "|" + tb_outaccount.getType()
+ " " + String.valueOf(tb_outaccount.getMoney()) + "元 "
+ tb_outaccount.getTime();
i++;
}
arrayAdapter = new ArrayAdapter<>(this,
android.R.layout.simple_list_item_1, strInfos);
lvinfo.setAdapter(arrayAdapter);
}
@Override
protected void onRestart() {
super.onRestart();
ShowInfo(R.id.btnoutinfo);
}
}
InAccountInfo.java
public class InAccountInfo extends Activity {
public static final String FLAG = "id";
ListView lvinfo;
String strType = "";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.inaccountinfo);
lvinfo = (ListView) findViewById(R.id.lvinaccountinfo);
ShowInfo(R.id.btnininfo);
lvinfo.setOnItemClickListener(new AdapterView.OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
String strInfo = String.valueOf(((TextView) view).getText());
String strid = strInfo.substring(0, strInfo.indexOf('|'));
Intent intent = new Intent(InAccountInfo.this, InfoManage.class);
intent.putExtra(FLAG, new String[] { strid, strType });
startActivity(intent);
}
});
}
private void ShowInfo(int intType) {
String[] strInfos = null;
ArrayAdapter<String> arrayAdapter = null;
strType = "btnininfo";
InAccountDAO inaccountinfo = new InAccountDAO(InAccountInfo.this);
List<Tb_inAccount> listinfos = inaccountinfo.getScrollData(0,
(int) inaccountinfo.getCount());
strInfos = new String[listinfos.size()];
int m = 0;
for (Tb_inAccount tb_inaccount : listinfos) {
strInfos[m] = tb_inaccount.get_id() + "|" + tb_inaccount.getType()
+ " " + String.valueOf(tb_inaccount.getMoney()) + "元 "
+ tb_inaccount.getTime();
m++;
}
arrayAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, strInfos);
lvinfo.setAdapter(arrayAdapter);
}
@Override
protected void onRestart() {
super.onRestart();
ShowInfo(R.id.btnininfo);
}
}
ShowInfo.java
public class Showinfo extends Activity {
public static final String FLAG = "id";
Button btnoutinfo, btnininfo, btnflaginfo;
ListView lvinfo;
String strType = "";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.showinfo);
lvinfo = findViewById(R.id.lvinfo);
btnoutinfo = findViewById(R.id.btnoutinfo);
btnininfo = findViewById(R.id.btnininfo);
btnflaginfo = findViewById(R.id.btnflaginfo);
btnoutinfo.setOnClickListener(arg0 -> {
ShowInfo(R.id.btnoutinfo);
});
btnininfo.setOnClickListener(arg0 -> {
ShowInfo(R.id.btnininfo);
});
btnflaginfo.setOnClickListener(arg0 -> {
ShowInfo(R.id.btnflaginfo);
});
lvinfo.setOnItemClickListener((parent, view, position, id) -> {
String strInfo = String.valueOf(((TextView) view).getText());
String strid = strInfo.substring(0, strInfo.indexOf('|'));
Intent intent = null;
if (strType == "btnflaginfo") {
intent = new Intent(Showinfo.this, FlagManage.class);
intent.putExtra(FLAG, strid);
startActivity(intent);
}
});
}
private void ShowInfo(int intType) {
String[] strInfos = null;
ArrayAdapter<String> arrayAdapter;
Intent intent = null;
switch (intType) {
case R.id.btnoutinfo:// 如果是支出按钮btnoutinfo
strType = "outinfo";
intent = new Intent(Showinfo.this, TotalChart.class);
intent.putExtra("passType", strType);
startActivity(intent);
break;
case R.id.btnininfo:// 如果是收入按钮btnininfo
strType = "ininfo";
intent = new Intent(Showinfo.this, TotalChart.class);
intent.putExtra("passType", strType);
startActivity(intent);
break;
case R.id.btnflaginfo:// 如果是btnflaginfo按钮
strType = "btnflaginfo";
FlagDAO flaginfo = new FlagDAO(Showinfo.this);
List<Tb_flag> listFlags = flaginfo.getScrollData(0,
(int) flaginfo.getCount());
strInfos = new String[listFlags.size()];
int n = 0;
for (Tb_flag tb_flag : listFlags) {
strInfos[n] = tb_flag.getid() + "|" + tb_flag.getFlag();
if (strInfos[n].length() > 30)
strInfos[n] = strInfos[n].substring(0, 30) + "......";
n++;
}
arrayAdapter = new ArrayAdapter<>(this,
android.R.layout.simple_list_item_1, strInfos);
lvinfo.setAdapter(arrayAdapter);
break;
}
}
}
Sysset.java
public class Sysset extends Activity {
EditText txtpwd;
Button btnSet, btnsetCancel;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.sysset);
txtpwd = (EditText) findViewById(R.id.txtPwd);
btnSet = (Button) findViewById(R.id.btnSet);
btnsetCancel = (Button) findViewById(R.id.btnsetCancel);
btnSet.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
PwdDAO pwdDAO = new PwdDAO(Sysset.this);
Tb_pwd tb_pwd = new Tb_pwd(txtpwd.getText().toString());
if (pwdDAO.getCount() == 0) {
pwdDAO.add(tb_pwd);
} else {
pwdDAO.update(tb_pwd);
}
Toast.makeText(Sysset.this, "〖密码〗设置成功！", Toast.LENGTH_SHORT)
.show();
}
});
btnsetCancel.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
txtpwd.setText("");
txtpwd.setHint("请输入密码");
}
});
}
}
AccountFlag.java
public class AccountFlag extends Activity {
EditText txtFlag;
Button btnflagSaveButton;
Button btnflagCancelButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.accountflag);
txtFlag = findViewById(R.id.txtFlag);
btnflagSaveButton = findViewById(R.id.btnflagSave);
btnflagCancelButton = findViewById(R.id.btnflagCancel);
btnflagSaveButton.setOnClickListener(arg0 -> {
String strFlag = txtFlag.getText().toString();
if (!strFlag.isEmpty()) {
FlagDAO flagDAO = new FlagDAO(AccountFlag.this);
Tb_flag tb_flag = new Tb_flag(
flagDAO.getMaxId() + 1, strFlag);
flagDAO.add(tb_flag);
Toast.makeText(AccountFlag.this, "〖新增便签〗数据添加成功！",
Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(AccountFlag.this, "请输入便签！",
Toast.LENGTH_SHORT).show();
}
});
btnflagCancelButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
txtFlag.setText("");
}
});
}
}
Help.java
public class Help extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.help);
WebView webview= findViewById(R.id.webView1);
StringBuilder sb=new StringBuilder();
sb.append("《家庭理财通》使用帮助：");
sb.append("");
sb.append("修改密码：选择"系统设置"模块可以修改登录密码，项目运行时，默认没有密码。");
sb.append("支出管理：选择"新增支出"模块可以添加支出信息；选择"我的支出"模块可以查看、修改或删除支出信息。");
sb.append("收入管理：选择"新增收入"模块可以添加收入信息；选择"我的收入"模块可以查看、修改或删除收入信息。");
sb.append("便签管理：选择"收支便签"模块可以添加便签信息；选择"数据管理"模块中的"便签信息"按钮可以查看、修改或删除便签信息。");
sb.append("退出系统：选择"退出"模块可以退出《家庭理财通》项目。");
sb.append("");
webview.loadDataWithBaseURL(null, sb.toString(),"text/html","utf-8",null);
}
}
数据库管理
查看数据库
View->Tool Windows->Database Inspector
; 总结
通过这个项目可以学习
- 软件开发流程
- Android布局文件设计
- SQLite数据库学习使用
- 公共类设计使用
- 在Android程序中操作SQLite数据库
生成apk文件可自行测试：https://pan.baidu.com/s/1_ZVCq_PRauPpjpQKh3HVHw
提取码：jm57
Original: https://blog.csdn.net/keep_today/article/details/122596898
Author: @一尘√
Title: 【安卓基础】基于Android Studio的家庭理财通项目
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