If you want to create a pending intent function check my below example. Here I have created MainActivity class and MyReciver class to show get data and in this class I have used toast function. Below code will clearly described you how to create Pending Intent function.

Step(1)-MainActivity-

public class MainActivity extends Activity {

      @Override
        protected void onCreate(Bundle savedInstanceState) {
             super.onCreate(savedInstanceState);
             setContentView(R.layout.activity_main);
             Button b1 = (Button) findViewById(R.id.button1);
             b1.setOnClickListener(new View.OnClickListener() {
                 @Override
                  public void onClick(View v) {
                      // TODO Auto-generated method stub
                        startAlert(v);
                  }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
                 getMenuInflater().inflate(R.menu.main, menu);
                 return true;
    }

    public void startAlert(View view) {
                EditText text = (EditText) findViewById(R.id.editText1);
                int time = Integer.parseInt(text.getText().toString());
                Intent intent = new Intent(this, MyReceiver.class);
                PendingIntent pend_intent = PendingIntent.getBroadcast(
                            this.getApplicationContext(), 0, intent, 0);
        //calls the alarm
                 AlarmManager alarmManager = (AlarmManager) getSystemService(
                                        ALARM_SERVICE);
                 alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()
                   + (time * 10000), pend_intent);
    }

Step(2)-Create MyReciver class -

public class MyReceiver extends BroadcastReceiver{

    @Override
    public void onReceive(Context context, Intent intent) {
                  Toast.makeText(context, "Times Up!!!!", Toast.LENGTH_LONG).show();
    }

}

Step(3)-Activity_Main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_marginBottom="172dp"
        android:text="Click me" />

    <EditText
        android:id="@+id/editText1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/button1"
        android:layout_alignParentTop="true"
        android:layout_alignRight="@+id/button1"
        android:layout_marginTop="63dp"
        android:ems="10" />

</RelativeLayout>

Step(4)-AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.alert_broadcast_receiver"
    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.example.alert_broadcast_receiver.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

        <receiver android:name="MyReceiver" >
        </receiver>
    </application>

</manifest>