No Activity found to handle Intent { act=com.application.activity.MainActivity }-android

No Activity found to handle Intent { act=com.application.activity.MainActivity }

create 2 packges : one for mainactivity, another for login interface
Here's the file AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.application.activity"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.application.login.Login"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <activity
            android:name=".activity.MAINACTIVITY"
             android:configChanges="orientation|keyboardHidden"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="com.application.activity.MAINACTIVITY" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>

    </application>

</manifest>
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.application.activity"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

</manifest>

here's the Login class :

package com.application.login;

import java.util.ArrayList;

import android.app.Activity;
import android.app.Dialog;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import com.application.activity.R;

public class Login extends Activity implements View.OnClickListener{

    ArrayList<Integer> tabid = new ArrayList <Integer>();
    ArrayList <Double> tabpass = new ArrayList <Double>();
    Button login;
    Button cancel;
    EditText id;
    EditText pass;
    int n= tabid.size();
    int m= tabpass.size();

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



        DatabaseLogin db = new DatabaseLogin(this);
        db.open();
        tabid = db.getIdentifiant();//tableau contient tout les identifiant
        tabpass = db.getPassword();//tableau contient tout les mot de passe

        initialize();

        login.setOnClickListener(this);
        cancel.setOnClickListener(this);

        db.close();
    }

    private void initialize() {
        // TODO Auto-generated method stub
        login =(Button) findViewById(R.id.blogin);
        cancel =(Button) findViewById(R.id.bcancel);
        id = (EditText) findViewById(R.id.edtid);
        pass = (EditText) findViewById(R.id.edtpassword);

    }



    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        switch(v.getId())
        {
&nbs