//TaskAdapter
--------------------
package com.example.esra.myloginapp.Adapters;

import android.content.Context;
import android.content.DialogInterface;
import android.provider.ContactsContract;
import android.support.v7.app.AlertDialog;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

import com.example.esra.myloginapp.Cls.ClsTask;
import com.example.esra.myloginapp.R;
import com.example.esra.myloginapp.UtlTask;

import java.util.List;

/**
 * Created by esra on 1/17/2017.
 */

public class TaskAdapter extends BaseAdapter {
    Context context;
    String spUser;
    List<ClsTask> myTaskList;


    public TaskAdapter(Context context, List<ClsTask> myTaskList, String spUser) {
        this.context = context;
        this.myTaskList = myTaskList;
        this.spUser = spUser;
    }

    @Override
    public int getCount() {
        return myTaskList.size();
    }

    @Override
    public Object getItem(int position) {
        return null;
    }

    @Override
    public long getItemId(int position) {
        return 0;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        final ClsTask singleItem = myTaskList.get(position);
        View singleTask = LayoutInflater.from(context).inflate(R.layout.task_layout, null, false);
        TextView txtTask = (TextView) singleTask.findViewById(R.id.txtTask);
        txtTask.setText(singleItem.taskName);

        CheckBox cbIsDone = (CheckBox) singleTask.findViewById(R.id.cbIsDone);
        cbIsDone.setChecked(singleItem.taskIsDone);
        /*cbIsDone.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                AlertDialog.Builder adConfirmStatus=new AlertDialog.Builder(context);
                adConfirmStatus.setTitle("Warning!");
                adConfirmStatus.setMessage("Are you sure you want to toggle this task?");
                adConfirmStatus.setPositiveButton("Change Status", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        UtlTask.taskStatusToggle(context,spUser,singleItem.taskName);
                        notifyDataSetChanged();
                    }
                });
                adConfirmStatus.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                    }
                });
                adConfirmStatus.show();
            }
        });*/
        ImageView btnTrash = (ImageView) singleTask.findViewById(R.id.btnTrash);
        btnTrash.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                AlertDialog.Builder adConfirmDelete=new AlertDialog.Builder(context);
                adConfirmDelete.setTitle("Warning!");
                adConfirmDelete.setMessage("are you sure you want to delete this task?");
                adConfirmDelete.setPositiveButton("Delete", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        UtlTask.removeTask(context, spUser, singleItem.taskName);
                        myTaskList.remove(position);
                        notifyDataSetChanged();
                    }
                });
                adConfirmDelete.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                    }
                });
            adConfirmDelete.show();
            }
        });
        return singleTask;
    }
}
---------------------------
//ClsTask
-------------------------
package com.example.esra.myloginapp.Cls;

import java.util.Date;

/**
 * Created by esra on 1/17/2017.
 */

public class ClsTask {
    public Date taskDate;
    public Date taskDue;
    public String taskName;
    public String taskDetail;
    public Boolean taskIsDone;
    public ClsTask(String userTask,String myData)
    {
        String[]myTaskInfo=myData.split(",");
        this.taskDate=new Date();
        this.taskDue=new Date();
        this.taskName=userTask;
        this.taskDetail=myTaskInfo[3];
        this.taskIsDone=myTaskInfo[4].equals("1");
    }

}
--------------------------
//LoginActivity
-------------------------
package com.example.esra.myloginapp;

import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;


public class LoginActivity extends AppCompatActivity {
    EditText txtUserName,txtPass;
    TextView logo;
    Button btnLogin,btnReg;
    Context context;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        setPointers();
    }
    private void setPointers()
    {
        this.context=this;
        txtUserName=(EditText)findViewById(R.id.txtUserName);
        txtPass=(EditText)findViewById(R.id.txtPass);
        logo=(TextView)findViewById(R.id.txtLogo);
        btnLogin=(Button)findViewById(R.id.btnLogin);
        btnReg=(Button)findViewById(R.id.btnReg);
        logo.setOnLongClickListener(new View.OnLongClickListener()
        {
            public boolean onLongClick(View v)
            {
                Toast.makeText(context,context.getResources().getString(R.string.msgLogo),Toast.LENGTH_SHORT).show();
            return true;
            }
        });
        final int ORG_COLOR=txtUserName.getCurrentTextColor();
        btnLogin.setOnClickListener(new View.OnClickListener() {
            UtlShared utl=new UtlShared(context);
            public void onClick(View v) {
                txtPass.setHintTextColor(ORG_COLOR);
                txtUserName.setHintTextColor(ORG_COLOR);
                if(txtUserName.getText().toString().length()<2||txtPass.getText().toString().length()<2)
                {
                    Toast.makeText(context,"you had not fill the userName or the password",Toast.LENGTH_SHORT).show();
                    txtUserName.setText("");
                    txtPass.setText("");
                    txtUserName.setHintTextColor(Color.RED);
                    txtPass.setHintTextColor(Color.RED);
                    return;
                }
                if(!(utl.checkPass((txtUserName.getText().toString()),(txtPass.getText().toString()))))
                {
                    Toast.makeText(context,"the user name or the password are not correct",Toast.LENGTH_SHORT).show();
                    return;
                }
                Intent myIntent=new Intent(context,TaskActivity.class);
                myIntent.putExtra("userName",utl.getNickName(txtUserName.getText().toString()));
                myIntent.putExtra("user",txtUserName.getText().toString());
                startActivity(myIntent);
                finish();
            }
        });
        btnReg.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent myIntent=new Intent(context,RegisterActivity.class);
                startActivity(myIntent);
            }
        });
    }
}
-------------------------
//RegisterActivity
-------------------------
package com.example.esra.myloginapp;

import android.content.Context;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class RegisterActivity extends AppCompatActivity {
    Context context;
    EditText txtUser,txtPass,checkPass,nickNmae;
    Button btnReg,btnCancel;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_register);
        setPointers();
    }
    private void setPointers()
    {
        this.context=this;
        txtUser=(EditText)findViewById(R.id.regTxtUser);
        txtPass=(EditText)findViewById(R.id.regTxtPass);
        checkPass=(EditText)findViewById(R.id.checkPass);
        nickNmae=(EditText)findViewById(R.id.nickName);
        btnReg=(Button)findViewById(R.id.regBtnReg);
        btnCancel=(Button)findViewById(R.id.regBtnCancel);
        btnReg.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                btnReg();
            }
        });
        btnCancel.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                finish();
            }
        });

    }
    private  void btnReg()
    {
        UtlShared utl=new UtlShared(context);
        if(txtUser.getText().toString().length()<2||nickNmae.getText().toString().length()<2)
        {
            Toast.makeText(context,"your name or nickName is less than 2 chars",Toast.LENGTH_SHORT).show();
            return;
        }
        if(utl.checkUser(txtUser.getText().toString()))
        {
            Toast.makeText(context, "user is exists", Toast.LENGTH_SHORT).show();
            return;
        }
        if(txtPass.getText().toString().length()<3)
        {
            Toast.makeText(context,"the password is less than 3 chars",Toast.LENGTH_SHORT).show();
            return;
        }
        if(!txtPass.getText().toString().equals(checkPass.getText().toString()))
        {
            Toast.makeText(context, "the passwords don't match", Toast.LENGTH_SHORT).show();
            return;
        }
        utl.addUser(txtUser.getText().toString(),txtPass.getText().toString(),nickNmae.getText().toString());
        finish();
    }
}
--------------------------------
//TaskActivity
------------------------------
package com.example.esra.myloginapp;

import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import com.example.esra.myloginapp.Adapters.TaskAdapter;

public class TaskActivity extends AppCompatActivity {
    Context context;
    TextView taskLogo;
    Button btnAddTask;
    String spUser="";
    ListView lvTask;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_task);
        setPointers();
        getExtra();
        showData();
    }
    private void showData()
    {
        TaskAdapter myAdapter=new TaskAdapter(context,UtlTask.getAllTask(context,spUser),spUser);
        lvTask.setAdapter(myAdapter);
    }
    private void getExtra()
    {
        String myData=getIntent().getStringExtra("userName");
        taskLogo.setText("Hello "+myData);
        Toast.makeText(context,"user"+myData+"is logged in",Toast.LENGTH_SHORT).show();
        spUser=getIntent().getStringExtra("user");
    }
    private void setPointers()
    {
        this.context=this;
        taskLogo=(TextView)findViewById(R.id.taskLogo);
        btnAddTask=(Button)findViewById(R.id.btnAddTask);
        btnAddTask.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showAdAddTask();
            }
        });
        lvTask=(ListView)findViewById(R.id.lvTask);
    }
    private void showAdAddTask()
    {
        AlertDialog.Builder adTask=new AlertDialog.Builder(context);
        View inflatedTask= LayoutInflater.from(context).inflate(R.layout.alert_dialog_new_task,null,false);
        final EditText myNewTask=(EditText)inflatedTask.findViewById(R.id.txtNewTask);
        adTask.setView(inflatedTask);
        adTask.setPositiveButton(getResources().getString(R.string.adPosBtn), new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                String myTask=myNewTask.getText().toString();
                UtlTask.addTask(context,spUser,myTask);
                showData();
            }
        });
        adTask.setNegativeButton(getResources().getString(R.string.adNegBtn), new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
            }
        });
        adTask.show();

    }

}
-----------------------------
//UtlShared
---------------------------
package com.example.esra.myloginapp;

import android.content.Context;
import android.content.SharedPreferences;
import android.os.StrictMode;

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

/**
 * Created by esra on 1/14/2017.
 */

public class UtlShared {
    Context context;
    SharedPreferences userPref;
    SharedPreferences.Editor editor;
    public UtlShared(Context context)
    {
        this.context=context;
        userPref=context.getSharedPreferences("users",Context.MODE_PRIVATE);
        editor=userPref.edit();
    }
    //return true if user excists
    //else return false
    public boolean checkUser(String userName)
    {
        String checkString=userPref.getString(userName,"n/a");
        return !checkString.equals("n/a");
    }
    //returns true if password matches the user name
    //else returns false
    public boolean checkPass(String userName,String password)
    {
        if(!checkUser(userName))return false;
        String[] values=userPref.getString(userName,"n/a").split(",");
        String pass=values[0];
        return pass.equals(password);
    }
    public void addUser(String userName,String pass,String nickName)
    {
        editor.putString(userName,(pass+","+nickName));
        editor.commit();
    }
    public String getNickName(String userName)
    {
        String[] values=userPref.getString(userName,"n/a").split(",");
        return values[1];
    }



}
-------------------------
//UtlTask
-------------------------
package com.example.esra.myloginapp;

import android.content.Context;
import android.content.SharedPreferences;

import com.example.esra.myloginapp.Cls.ClsTask;

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

/**
 * Created by esra on 1/17/2017.
 */

public class UtlTask {
    public static void removeTask(Context context,String spUser,String userTask)
    {
        SharedPreferences myPref=context.getSharedPreferences(spUser,Context.MODE_PRIVATE);
        SharedPreferences.Editor editor=myPref.edit();
        editor.remove(userTask);
        editor.commit();
    }
    public static void taskStatusToggle(Context context,String spUser,String userTask)
    {
        SharedPreferences myPref=context.getSharedPreferences(spUser,Context.MODE_PRIVATE);
        SharedPreferences.Editor editor=myPref.edit();
        boolean taskStatus=!(myPref.getString(userTask,"0").equals("1"));
        editor.putString(userTask,taskStatus?"1":"0");
        editor.commit();
    }


    public static List<ClsTask> getAllTask(Context context, String spUser)
    {
        SharedPreferences myPref=context.getSharedPreferences(spUser,Context.MODE_PRIVATE);

        List<ClsTask> myTasks=new ArrayList<>();
        Map<String,?> tasks=myPref.getAll();
        for(Map.Entry<String,?> singleTask:tasks.entrySet())
        {
            myTasks.add(new ClsTask(singleTask.getKey(),singleTask.getValue().toString()));
        }
        return myTasks;
    }
    public static void addTask(Context context,String spUser,String userTask)
    {
        SharedPreferences myPref=context.getSharedPreferences(spUser,Context.MODE_PRIVATE);
        SharedPreferences.Editor editor=myPref.edit();
        editor.putString(userTask,"date"+","+"date"+","+userTask+","+"userDetail"+","+"0");
        editor.commit();

    }
}
------------------------------------
//activity_login
-------------------------------
<LinearLayout android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    xmlns:android="http://schemas.android.com/apk/res/android" >
    <!--my logo linearLayout-->
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:layout_weight="1">
        <TextView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:text="@string/logo_login"
            android:gravity="center"
            android:textSize="@dimen/logo"
            android:id="@+id/txtLogo"/>
    </LinearLayout>
    <!--my user and pass linearLayout-->
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:layout_weight="1">
        <EditText
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:hint="@string/username_hint"
            android:layout_weight="1"
            android:id="@+id/txtUserName"/>
        <EditText
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:hint="@string/pass_hint"
            android:id="@+id/txtPass"/>
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="horizontal">
        <Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/btn_login"
            android:layout_weight="1"
            android:layout_margin="@dimen/btn_margin"
            android:id="@+id/btnLogin"/>
        <Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/btn_reg"
            android:layout_weight="1"
            android:layout_margin="@dimen/btn_margin"
            android:id="@+id/btnReg"/>
    </LinearLayout>
</LinearLayout>
--------------------------
//activity_register
--------------------------
<LinearLayout android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    xmlns:android="http://schemas.android.com/apk/res/android">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="3">
        <TextView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:text="@string/reg_logo"
            android:textSize="@dimen/regLogo"
            android:gravity="center"
            />
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="vertical">
        <EditText
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:hint="@string/regHintUserName"
            android:id="@+id/regTxtUser"
            />
        <EditText
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:hint="@string/regHintPass"
            android:id="@+id/regTxtPass"
        />
        <EditText
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:hint="@string/checkPass"
            android:id="@+id/checkPass"
        />
        <EditText
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:hint="@string/nickName"
            android:id="@+id/nickName"
        />
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal"
        android:layout_weight="3">
        <Button
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_margin="@dimen/btn_margin"
            android:text="@string/btn_reg"
            android:layout_weight="1"
            android:id="@+id/regBtnReg"/>
        <Button
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:text="@string/btn_cancel"
            android:layout_weight="1"
            android:layout_margin="@dimen/btn_margin"
            android:id="@+id/regBtnCancel"/>
    </LinearLayout>
</LinearLayout>
-----------------------
//activity_task
------------------------
<LinearLayout android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    xmlns:android="http://schemas.android.com/apk/res/android">
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/task_logo"
        android:gravity="center"
        android:textSize="@dimen/taskLogo"
        android:id="@+id/taskLogo" />
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/add_task"
        android:id="@+id/btnAddTask" />
    <ListView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/lvTask">
    </ListView>
</LinearLayout>
---------------------------
//alert_dialog_new_task
----------------------------
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="wrap_content">
    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="@string/adLogo"
        android:gravity="center"
        android:textSize="@dimen/newTaskLogo"
        android:layout_weight="1.3"/>
    <EditText
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:hint="@string/adTxtHint"
        android:id="@+id/txtNewTask" />
</LinearLayout>
----------------------------
//task_layout
--------------------------
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <CheckBox
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/cbIsDone"
        android:layout_weight="5"/>
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/txtTask"
        android:layout_weight="1"
        />
<ImageView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/btnTrash"
    android:layout_weight="5"
    android:src="@drawable/delete_task"/>
</LinearLayout>
----------------------