Android g minDate=-1； 长时间； 试一试{ c=mydb.rawQuery（“从u_id=“+u_id+”；”，null的记录中选择不同的（日期））； if（c.moveToFirst（））{ minDate=getLongDateTime（c.get
g minDate=-1； 长时间； 试一试{ c=mydb.rawQuery（“从u_id=“+u_id+”；”，null的记录中选择不同的（日期））； if（c.moveToFirst（））{ minDate=getLongDateTime（c.getString（0），日期格式）； while（c.moveToNext（））{ tempDate=getLongDateTime（c.getString（0），日期格式）； if（tempDateAndroid g minDate=-1； 长时间； 试一试{ c=mydb.rawQuery（“从u_id=“+u_id+”；”，null的记录中选择不同的（日期））； if（c.moveToFirst（））{ minDate=getLongDateTime（c.get,android,sqlite,android-cursor,Android,Sqlite,Android Cursor,g minDate=-1； 长时间； 试一试{ c=mydb.rawQuery（“从u_id=“+u_id+”；”，null的记录中选择不同的（日期））； if（c.moveToFirst（））{ minDate=getLongDateTime（c.getString（0），日期格式）； while（c.moveToNext（））{ tempDate=getLongDateTime（c.getString（0），日期格式）； if（tempDate长日期）{ longDate=tempDate；
class DatabaseHelper extends SQLiteAssetHelper {
static final String AUTHORITY = "com.example.attendance.provider";
static final String ACCOUNT_TYPE = "example.com";
static final String ACCOUNT = "Lazim";
static final String WIFI_ERROR = "Please enter your office premises";
static final boolean DEBUG = true;
private static final String DATE_FORMAT = "d-M-yyyy";
private static final String TIME_FORMAT = "hh:mm:ss a";
private static final String DB_NAME = "attendance.db";
private static final int DB_VERSION = 1;
private static SQLiteDatabase mydb;
private Cursor c;
private Context context;
DatabaseHelper(Context context) {
super(context, DB_NAME, null, DB_VERSION);
this.context = context;
mydb = getWritableDatabase();
}
boolean insertTable(int u_id, String name, String username, String password) {
boolean b;
try {
c = mydb.rawQuery("select * from login where u_id=" + u_id + ";", null);
if (!c.moveToFirst()) {
mydb.execSQL("insert into login (u_id,name,username,password) values(" + u_id + ",'" + name + "','" + username + "','" + password + "');");
b = true;
} else {
mydb.execSQL("update login set name='" + name + "',username='" + username + "',password='" + password + "' where u_id=" + u_id + ";");
mydb.execSQL("delete from records where u_id=" + u_id + ";");
b = true;
}
} catch (Exception e) {
e.printStackTrace();
b = false;
}
return b;
}
boolean insertTable(int id, String name, String date, String checkin, int flag) {
boolean b = false;
try {
c = mydb.rawQuery("select * from records where u_id=" + id + " and date='" + date + "' and checkin='" + checkin + "';", null);
if (!c.moveToFirst()) {
mydb.execSQL("insert into records (u_id,name,date,checkin,checkout,flag) values(" + id + ",'" + name + "','" + date + "','" + checkin + "',''," + flag + ");");
b = true;
}
} catch (SQLiteException e) {
e.printStackTrace();
}
return b;
}
Boolean deleteRecords(String username) {
Boolean b = null;
try {
c = mydb.rawQuery("select u_id from login where username='" + username + "';", null);
if (c.moveToFirst()) {
int u_id = c.getInt(0);
Cursor cursor = mydb.rawQuery("select * from records where u_id=" + u_id + ";", null);
if (cursor.moveToFirst())
mydb.execSQL("delete from records where u_id=" + u_id + ";", null);
cursor.close();
mydb.execSQL("delete from login where username='" + username + "';");
b = true;
} else
b = false;
} catch (SQLiteException e) {
e.printStackTrace();
}
return b;
}
boolean insertOnLogin(int u_id, String name, String username, String password) {
boolean b = false;
try {
c = mydb.rawQuery("select * from login where u_id=" + u_id + ";", null);
if (!c.moveToFirst())
mydb.execSQL("insert into login (u_id,name,username,password) values(" + u_id + ",'" + name + "','" + username + "','" + password + "');");
else
mydb.execSQL("update login set name='" + name + "',username='" + username + "',password='" + password + "' where u_id=" + u_id + ";");
b = true;
} catch (SQLiteException e) {
e.printStackTrace();
}
return b;
}
boolean updateTable(int id, String name, String checkout, String date, int flag) {
boolean b = false;
int s_id, f;
try {
c = mydb.rawQuery("select s_id,flag from records where u_id=" + id + " and date='" + date + "' and checkin='" + getCheckin() + "';", null);
if (c.moveToFirst()) {
s_id = c.getInt(0);
f = c.getInt(1);
if (f == 0)
flag = 0;
mydb.execSQL("update records set flag=" + flag + ",checkout='" + checkout + "' where s_id=" + s_id + ";");
b = true;
} else {
mydb.execSQL("insert into records (u_id,name,date,checkin,checkout,flag) values(" + id + ",'" + name + "','" + date + "','','" + checkout + "'," + flag + ");");
b = true;
}
} catch (SQLiteException e) {
e.printStackTrace();
}
return b;
}
void updateFlags(Cursor c) {
if (c.moveToFirst()) {
do {
try {
mydb.execSQL("update records set flag=1 where u_id=" + c.getInt(0) + " and date='" + c.getString(2) + "' and checkin='" + c.getString(3) + "' and checkout='" + c.getString(4) + "';");
if (DEBUG) Log.i("#####", "###FLAGS UPDATED");
} catch (SQLiteException e) {
e.printStackTrace();
}
} while (c.moveToNext());
}
}
long getMinDate(int u_id) {
long minDate = -1;
long tempDate;
try {
c = mydb.rawQuery("select distinct(date) from records where u_id=" + u_id + ";", null);
if (c.moveToFirst()) {
minDate = getLongDateTime(c.getString(0), DATE_FORMAT);
while (c.moveToNext()) {
tempDate = getLongDateTime(c.getString(0), DATE_FORMAT);
if (tempDate < minDate)
minDate = tempDate;
}
}
} catch (SQLiteException e) {
e.printStackTrace();
}
return minDate;
}
private String getMaxDate(int u_id, String check) {
long longDate;
long tempDate;
String maxDate = null;
try {
if ("checkout".equals(check))
c = mydb.rawQuery("select distinct(date) from records where u_id=" + u_id + " and checkout!='';", null);
else
c = mydb.rawQuery("select distinct(date) from records where u_id=" + u_id + ";", null);
if (c.moveToFirst()) {
maxDate = c.getString(0);
longDate = getLongDateTime(maxDate, DATE_FORMAT);
while (c.moveToNext()) {
tempDate = getLongDateTime(c.getString(0), DATE_FORMAT);
if (tempDate > longDate) {
longDate = tempDate;
maxDate = c.getString(0);
}
}
}
} catch (SQLiteException e) {
e.printStackTrace();
}
return maxDate;
}
private long getLongDateTime(String datetime, String format) {
SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format, Locale.US);
Date newDate;
long longDate = -1;
try {
newDate = simpleDateFormat.parse(datetime);
longDate = newDate.getTime();
} catch (ParseException e) {
e.printStackTrace();
}
return longDate;
}
POJO urlConnector(String con) {
POJO pojo = new POJO();
int u_id;
String response;
try {
URL url = new URL(con);
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.setConnectTimeout(10000);
httpURLConnection.setReadTimeout(10000);
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader((InputStream) httpURLConnection.getContent()));
response = bufferedReader.readLine();
httpURLConnection.disconnect();
JSONObject object = new JSONObject(response);
response = object.getString("response");
pojo.setResponse(response);
if ("success".equals(response)) {
u_id = object.getInt("u_id");
pojo.setU_id(u_id);
}
} catch (SocketTimeoutException e) {
e.printStackTrace();
pojo.setResponse("Connection timed out");
} catch (IOException e) {
e.printStackTrace();
pojo.setResponse("Network unavailable");
} catch (JSONException e) {
e.printStackTrace();
pojo.setResponse("Data unavailable");
}
return pojo;
}
POJO jsonReceiver(String con) {
POJO pojo = new POJO();
String name = "", response;
int u_id = -1;
try {
URL url = new URL(con);
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.setConnectTimeout(10000);
httpURLConnection.setReadTimeout(10000);
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader((InputStream) httpURLConnection.getContent()));
String result = bufferedReader.readLine();
httpURLConnection.disconnect();
JSONObject object = new JSONObject(result);
response = object.getString("response");
pojo.setResponse(response);
if ("success".equals(response)) {
u_id = object.getInt("u_id");
name = object.getString("name");
pojo.setU_id(u_id);
pojo.setNamePojo(name);
}
if (object.has("jsonarray")) {
JSONArray jsonArray = object.getJSONArray("jsonarray");
if (DEBUG) Log.i("#####", "JSONARRAY: " + jsonArray.toString());
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObject = jsonArray.getJSONObject(i);
if (DEBUG) Log.i("###########", "#####" + jsonObject);
String date = jsonObject.getString("date");
String checkin = jsonObject.getString("checkin");
String checkout = jsonObject.getString("checkout");
try {
c = mydb.rawQuery("select * from records where u_id=" + u_id + " and date='" + date + "' and checkin='" + checkin + "';", null);
if (!c.moveToFirst())
mydb.execSQL("insert into records (u_id,name,date,checkin,checkout) values (" + u_id + ",'" + name + "','" + date + "','" + checkin + "','" + checkout + "');");
} catch (SQLiteException e) {
e.printStackTrace();
}
}
} else if (DEBUG) Log.i("#####", "###NO JSON ARRAY");
} catch (SocketTimeoutException e) {
e.printStackTrace();
pojo.setResponse("Connection timed out");
} catch (IOException e) {
e.printStackTrace();
pojo.setResponse("Network unavailable");
} catch (JSONException e) {
e.printStackTrace();
pojo.setResponse("Data unavailable");
}
return pojo;
}
String uploadData(String con) {
String result;
try {
URL url = new URL(con);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setConnectTimeout(10000);
connection.setReadTimeout(10000);
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
result = reader.readLine();
connection.disconnect();
} catch (SocketTimeoutException e) {
e.printStackTrace();
result = "Connection timed out";
} catch (IOException e) {
e.printStackTrace();
result = "Network unavailable";
}
return result;
}
void setCheckin(String checkin) {
SharedPreferences preferences = context.getSharedPreferences("checkin", MODE_PRIVATE);
SharedPreferences.Editor editor = preferences.edit();
editor.putString("last_checkin", checkin);
editor.apply();
}
String getCheckin() {
SharedPreferences preferences = context.getSharedPreferences("checkin", MODE_PRIVATE);
return preferences.getString("last_checkin", null);
}
Cursor getFileQueue() {
try {
c = mydb.rawQuery("select u_id,name,date,checkin,checkout from records where flag=0 order by s_id", null);
return c;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
private Cursor getSessionLogAM(String date, int u_id) {
Cursor mergeCursorAM = null;
try {
c = mydb.rawQuery("select checkin,checkout from records where u_id=" + u_id + " and date='" + date + "' and checkin like '12%AM' order by checkin;", null);
mergeCursorAM = mydb.rawQuery("select checkin,checkout from records where u_id=" + u_id + " and date='" + date + "' and checkin like '%AM' and checkin not like '12%' order by checkin;", null);
if (c.moveToFirst()) {
if (mergeCursorAM.moveToFirst())
mergeCursorAM = new MergeCursor(new Cursor[]{c, mergeCursorAM});
else
mergeCursorAM = c;
}
} catch (SQLiteException e) {
e.printStackTrace();
}
return mergeCursorAM;
}
private Cursor getSessionLogPM(String date, int u_id) {
Cursor mergeCursorPM = null;
try {
c = mydb.rawQuery("select checkin,checkout from records where u_id=" + u_id + " and date='" + date + "' and checkin like '12%PM' order by checkin;", null);
mergeCursorPM = mydb.rawQuery("select checkin,checkout from records where u_id=" + u_id + " and date='" + date + "' and checkin like '%PM' and checkin not like '12%' order by checkin;", null);
if (c.moveToFirst()) {
if (mergeCursorPM.moveToFirst())
mergeCursorPM = new MergeCursor(new Cursor[]{c, mergeCursorPM});
else
mergeCursorPM = c;
}
} catch (SQLiteException e) {
e.printStackTrace();
}
return mergeCursorPM;
}
Cursor getMergedLog(String date, int u_id) {
Cursor AM = getSessionLogAM(date, u_id), PM = getSessionLogPM(date, u_id);
if (AM.moveToFirst()) {
if (PM.moveToFirst())
return new MergeCursor(new Cursor[]{AM, PM});
else return AM;
} else if (PM.moveToFirst())
return PM;
else return null;
}
String enString(String s) {
try {
return URLEncoder.encode(s, "UTF-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
return null;
}
}
String getName(String username) {
String name = "";
try {
c = mydb.rawQuery("select name from login where username='" + username + "';", null);
if (c.moveToFirst()) {
do {
name = c.getString(0);
} while (c.moveToNext());
}
} catch (SQLiteException e) {
e.printStackTrace();
}
return name;
}
int getID(String username) {
int id = -1;
try {
c = mydb.rawQuery("select u_id from login where username='" + username + "';", null);
if (c.moveToFirst()) {
do {
id = c.getInt(0);
} while (c.moveToNext());
}
} catch (SQLiteException e) {
e.printStackTrace();
}
return id;
}
String getLastLogin(int id) {
String maxTime;
String maxDate;
maxDate = getMaxDate(id, null);
if (maxDate != null) {
maxTime = getMaxTime(id, maxDate, "checkin");
if (maxTime != null)
return (maxTime + " " + maxDate);
}
return "N/A";
}
String getLastLogout(int id) {
String maxTime;
String maxDate;
maxDate = getMaxDate(id, "checkout");
if (maxDate != null) {
maxTime = getMaxTime(id, maxDate, "checkout");
if (maxTime != null)
return (maxTime + " " + maxDate);
}
return "N/A";
}
private String getMaxTime(int u_id, String date, String check) {
long time, tempTime;
String maxTime = null;
try {
c = mydb.rawQuery("select distinct(" + check + ") from records where u_id=" + u_id + " and date='" + date + "';", null);
if (c.moveToFirst()) {
maxTime = c.getString(0);
time = getLongDateTime(maxTime, TIME_FORMAT);
while (c.moveToNext()) {
tempTime = getLongDateTime(c.getString(0), TIME_FORMAT);
if (tempTime > time) {
time = tempTime;
maxTime = c.getString(0);
}
}
}
} catch (SQLiteException e) {
e.printStackTrace();
}
return maxTime;
}
boolean checkWifi() {
boolean b = false;
WifiManager wifiManager = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
if (wifiManager.startScan()) {
List<ScanResult> scanResults = wifiManager.getScanResults();
if (scanResults != null)
for (int i = 0; i < scanResults.size(); i++) {
ScanResult result = scanResults.get(i);
if ("6c:72:20:fa:0b:6c".equals(result.BSSID) || "d8:fe:e3:17:93:0c".equals(result.BSSID))
if (result.level >= -67) {
b = true;
break;
}
}
}
return b;
}
void setLoggedIn(String username) {
SharedPreferences sharedPreferences = context.getSharedPreferences("logged_in", MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putBoolean("login", true);
editor.putBoolean("login_received", true);
editor.putBoolean("logout_received", false);
editor.putString("username", username);
editor.apply();
}
void setLoggedOut() {
SharedPreferences sharedPreferences = context.getSharedPreferences("logged_in", MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putBoolean("login", false);
editor.putBoolean("logout_received", true);
editor.putBoolean("login_received", false);
editor.apply();
}
void setCheckBox(boolean b, String username, String password) {
SharedPreferences preferences = context.getSharedPreferences("checkbox", MODE_PRIVATE);
SharedPreferences.Editor editor = preferences.edit();
editor.putBoolean("remember", b);
if (b) {
editor.putString("username", username);
editor.putString("password", password);
} else {
if (preferences.getString("username", null) != null)
editor.remove("username");
if (preferences.getString("password", null) != null)
editor.remove("password");
}
editor.apply();
}
}