dorin

\///////////////////////////////////////////////\\\mainActivity/////


package com.example.dorinzrihen.loginapp;

        import android.app.Activity;
        import android.content.Intent;
        import android.content.SharedPreferences;
        import android.support.v7.app.ActionBarActivity;
        import android.os.Bundle;
        import android.text.Editable;
        import android.view.View;
        import android.widget.EditText;
        import android.widget.Toast;

        import junit.framework.Test;

public class MainActivity extends Activity {

    EditText user ;
    EditText pass;


    String password ;
    String userName ;

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        user =(EditText)findViewById(R.id.userName);
        pass = (EditText)findViewById(R.id.pass);

        SharedPreferences prefPass = getApplicationContext().getSharedPreferences("mypass" ,MODE_PRIVATE);
        password = prefPass.getString("password", "error");

        SharedPreferences prefUser = getApplicationContext().getSharedPreferences("myPref", MODE_PRIVATE);
        userName = prefUser.getString("user","error");

    }
//make the text from the xml remove
    public void uName(View v)
    {
        user.setText(" ");
    }
    public void pas(View v)
    {
        pass.setText(" ");
    }




    //register function
    public void btnR(View v)
    {
        Intent iRegister = new Intent(this,Register.class);
        this.startActivity(iRegister);
    }
//check if the username and the password are similar
    public void btnL(View v)
    {
        Toast.makeText(getApplicationContext(),user.getText().toString()+ userName  ,
                Toast.LENGTH_LONG).show();

        if((user.getText().toString().equals(userName)&&(user.getText().toString().equals(password))))
        {
            Intent iLogin = new Intent (this,Login.class);
            iLogin.putExtra("user",user.getText().toString());
            this.startActivity(iLogin);
        }
        else
        {
            Toast.makeText(getApplicationContext(), "your username are not Exists",
                    Toast.LENGTH_LONG).show();
        }
    }


}

/////////////////////////////////////////////////reg//////

package com.example.dorinzrihen.loginapp;

import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;


public class Register  extends Activity {
        EditText user;
        EditText pass;
        EditText pass2;
//set pointers
        protected void onCreate(Bundle savedInstanceState)
        {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_register);
          user = (EditText) findViewById(R.id.user);
           pass = (EditText) findViewById(R.id.password);
           pass2 = (EditText) findViewById(R.id.password2);
        }

    public void register(View v)
    {
       if(pass.getText().toString().equals(pass2.getText().toString()) )
        {
            SharedPreferences prefs = getApplicationContext().getSharedPreferences("MyPref", MODE_PRIVATE);
            SharedPreferences.Editor editor = prefs.edit();
            String userName = user.getText().toString();
            editor.putString("user", userName);
            editor.commit();
            SharedPreferences pref = getApplicationContext().getSharedPreferences("Mypass", MODE_PRIVATE);
            SharedPreferences.Editor editorpass = pref.edit();
            String password = pass.getText().toString();
            editorpass.putString("password", password);
            editorpass.commit();
            Intent iMain = new Intent(this,MainActivity.class);
            iMain.putExtra("user",user.getText().toString());
            iMain.putExtra("password",pass.getText().toString());
            Toast.makeText(getApplicationContext(), user.getText().toString()+ pass.getText().toString() ,
                    Toast.LENGTH_LONG).show();
            this.startActivity(iMain);

        }
        //if the passwords not the same
        else
        {
            Toast.makeText(getApplicationContext(), "passwords are not similar",
                    Toast.LENGTH_LONG).show();
        }
    }
    public void userDel(View v)
    {
        user.setText(" ");
    }

    public void passDel(View v)
    {
        pass.setText(" ");
    }

    public void pass2Del(View v)
    {
        pass2.setText(" ");
    }
//check if the passwords are the same and if they are shareprefernce to the password and to the username

    //the function to go back to the main activity
    public void cencel(View v)
    {
        Intent iMain = new Intent(this,MainActivity.class);
        this.startActivity(iMain);
    }
}

/////////////////////////////////////////////login///



package com.example.dorinzrihen.loginapp;

import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.widget.EditText;
import android.widget.TextView;

public class Login extends Activity
{
    TextView txtHello ;


        String accName;

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);


        SharedPreferences prefs = getApplicationContext().getSharedPreferences("myPref", MODE_PRIVATE);
        accName = prefs.getString("user","eror");


// the username + hello
        txtHello = (TextView)findViewById(R.id.helloS);
        txtHello.setText("Hello" + accName);


    }



//log out and delete the user name that e used
    public void logout()
    {
        SharedPreferences prefs = getApplicationContext().getSharedPreferences("MyPref",MODE_PRIVATE);
        SharedPreferences.Editor editor = prefs.edit();
        editor.remove("user");
        editor.commit();
        Intent iMain = new Intent(this,MainActivity.class);
        this.startActivity(iMain);
    }
}


\///////////////////////////////////////////////\\\mainActivity///// xml


<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:gravity="center_vertical"
    android:background="#489ce997"
    xmlns:android="http://schemas.android.com/apk/res/android" >
 <LinearLayout
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:layout_weight="1"
     android:orientation="vertical"
     android:gravity="center">

<EditText
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:textSize="30sp"
    android:text="User Name"
    android:background="#849bf5a9"
    android:id="@+id/userName"
    android:onClick="uName"
    />

<EditText
    android:layout_width="match_parent"
    android:text="Password"
    android:layout_height="wrap_content"
    android:textSize="30sp"
    android:background="#849bf5a9"
    android:id="@+id/pass"
    android:onClick="pas"

    />


 </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="vertical"
        >
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Log in"
        android:textSize="30sp"
        android:gravity="center"
        android:id="@+id/btnLog"
        android:onClick="btnL"/>
        <Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Register"
            android:textSize="30sp"
            android:gravity="center"
            android:id="@+id/btnReg"
            android:onClick="btnR"/>

    </LinearLayout>

</LinearLayout>


/////////////////////////////////////////////////reg//////  xml


<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="#7c91dd84"
    xmlns:android="http://schemas.android.com/apk/res/android" >


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:layout_weight="1"
        android:orientation="vertical"

        >

        <EditText
            android:text="User name"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textSize="30sp"
            android:background="#3cffffff"
            android:id="@+id/user"
            android:onClick="userDel"/>

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="your password"
            android:textSize="30sp"
            android:background="#3cffffff"
            android:id="@+id/password"
            android:onClick="passDel"/>

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="click your pass again"
            android:textSize="30sp"
            android:background="#3cffffff"
            android:id="@+id/password2"
            android:onClick="pass2Del"/>


    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="vertical"
        android:gravity="center">

        <Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Register me"
            android:textSize="30sp"
            android:id="@+id/reg"
            android:onClick="register"/>
        <Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Just Cancel"
            android:textSize="30sp"
            android:id="@+id/cen"
            android:onClick="cencel"/>

    </LinearLayout>
</LinearLayout>


/////////////////////////////////////////////login///  xml

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="#5079d566"
    xmlns:android="http://schemas.android.com/apk/res/android" >

<TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="hello"
    android:textSize="50sp"
    android:id="@+id/helloS"
    />

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Log out"
        android:textSize="30sp"
        android:id="@+id/btnOut"
        android:onClick="logout"/>


    </LinearLayout>