Androidのアラームアプリがうまく動かない

このアプリは通知を時間になったら通知をするアプリですが、
時間になると強制終了します。(問題が発生したため…と出る)
ログは以下の通りです。

Caused by: java.lang.ClassCastException: android.location.LocationManager cannot be cast to android.app.NotificationManager
                                                                           at com.mycompany.myclock.Alarm.onReceive(Alarm.java:11)
                                                                           at android.app.ActivityThread.handleReceiver(ActivityThread.java:2586)
                                                                           at android.app.ActivityThread.access$1700(ActivityThread.java:139) 
                                                                           at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1369) 
                                                                           at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                                           at android.os.Looper.loop(Looper.java:149) 
                                                                           at android.app.ActivityThread.main(ActivityThread.java:5257) 
                                                                           at java.lang.reflect.Method.invokeNative(Native Method) 
                                                                           at java.lang.reflect.Method.invoke(Method.java:515) 
                                                                           at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:788) 
                                                                           at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:604) 
                                                                           at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:132) 
                                                                           at de.robv.android.xposed.XposedBridge.main(Native Method) 
                                                                           at dalvik.system.NativeStart.main(Native Method)

import android.content.*;
import android.app.*;
public class Alarm extends BroadcastReceiver
{

    @Override
    public void onReceive(Context context, Intent receive){
        int Notificationid=receive.getIntExtra("notification",0);
        NotificationManager notification=(NotificationManager) context.getSystemService(Context.LOCATION_SERVICE);
        Intent boot=new Intent(context,MainActivity.class);

        PendingIntent contentintent=PendingIntent.getActivity(context,0,boot,0);

        Notification.Builder builder=new Notification.Builder(context);

        builder.setSmallIcon(android.R.drawable.ic_dialog_alert)
            .setContentTitle("時間になりました")
            .setContentText(receive.getCharSequenceExtra("TODO"))
            .setWhen(System.currentTimeMillis())
            .setPriority(Notification.PRIORITY_DEFAULT)
            .setAutoCancel(true)
            .setDefaults(Notification.DEFAULT_SOUND)
            .setContentIntent(contentintent);
        notification.notify(Notificationid,builder.build());
    }
}

import android.app.*;
import android.os.*;
import android.widget.*;
import android.view.View.*;
import android.view.*;
import android.view.inputmethod.*;
import android.content.*;
import java.util.*;
public class MainActivity extends Activity implements OnClickListener{
    private RelativeLayout layout;
    private InputMethodManager im;
    private int notificationId=0;
    @Override
    public void onClick(View view){
        EditText edit=(EditText) findViewById(R.id.editText);
        Intent bootintent=new Intent(this,Alarm.class);
        bootintent.putExtra("notification",notificationId);
        bootintent.putExtra("TODO",edit.getText());
        PendingIntent alarmintent=PendingIntent.getBroadcast(MainActivity.this,0,bootintent,PendingIntent.FLAG_CANCEL_CURRENT);
        AlarmManager alarm=(AlarmManager) getSystemService(Context.ALARM_SERVICE);
        TimePicker timepicker=(TimePicker) findViewById(R.id.timePicker);

        switch(view.getId()){
            case R.id.set:
                int hour=timepicker.getCurrentHour();
                int minute=timepicker.getCurrentMinute();

                Calendar start=Calendar.getInstance();
                start.set(Calendar.HOUR_OF_DAY,hour);
                start.set(Calendar.MINUTE,minute);
                start.set(Calendar.SECOND,0);
                long alarmstart=start.getTimeInMillis();

                alarm.set(AlarmManager.RTC_WAKEUP,alarmstart,alarmintent);

                Toast.makeText(MainActivity.this,"通知をセットしました",Toast.LENGTH_SHORT).show();
                notificationId++;
                break;
            case R.id.cancel:
                alarm.cancel(alarmintent);
                Toast.makeText(MainActivity.this,"通知をキャンセルしました",Toast.LENGTH_SHORT).show();
                break;
        }
    }


    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);


        layout=(RelativeLayout) findViewById(R.id.mainLayout);

        im=(InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
        Button Click=(Button) findViewById(R.id.set);
        Click.setOnClickListener(this);

        Button cancel=(Button) findViewById(R.id.cancel);
        cancel.setOnClickListener(this);
    }

    @Override
    public boolean onTouchEvent(MotionEvent event)
    {
        im.hideSoftInputFromWindow(layout.getWindowToken(),InputMethodManager.HIDE_NOT_ALWAYS);
        layout.requestFocus();
        return false;
    }
}

どこか間違いはありますか？よろしくお願いします。