gmsetiawan

 <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="com.gmsetiawan.droidclass.MainActivity$PlaceholderFragment" >

gmsetiawan

package com.gmsetiawan.droidclass;

import java.util.Arrays;

import android.support.v7.app.ActionBarActivity;
import android.support.v4.app.Fragment;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;

gmsetiawan

Don't forget to add app_id at string.xml 

<?xml version="1.0" encoding="utf-8"?>
<resources>
    ...
    <string name="app_id">272943959560173</string>
</resources>

then add meta and activity at manifest

gmsetiawan

public static class PlaceholderFragment extends Fragment {

        public PlaceholderFragment() {
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {
            View rootView = inflater.inflate(R.layout.fragment_main, container, false);
            

gmsetiawan

package com.example.droidclass;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class ActivityTwo extends Activity {

    TextView tvReceived;
	

gmsetiawan

package com.example.droidclass;

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

public class MainActivity extends Activity {

gmsetiawan

public class MyActivity extends Activity implements View.OnClickListener {

    Button button1, button2, button3;

    @Override
    public void onCreate(Bundle bundle) {
        super.onCreate();
        /.../
        button1 = (Button) findViewById(R.id.button1);
        button2 = (Button) findViewById(R.id.button2);

gmsetiawan

package com.example.droidclass;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.Spinner;

gmsetiawan

final TextView tvRate = (TextView) findViewById(R.id.textView6);
RatingBar rbRate = (RatingBar) findViewById(R.id.ratingBar1);
rbRate.setOnRatingBarChangeListener(new OnRatingBarChangeListener() {
			
	@Override
	public void onRatingChanged(RatingBar ratingBar, float rating,
		boolean fromUser) {
		// TODO Auto-generated method stub
		tvRate.setText(String.valueOf(rating));
	}

gmsetiawan

public class FormWidgetActivity extends Activity{

	private Handler progressBarHandler = new Handler();
	ProgressBar mProgressBar, mProgressBarHorizontal;
	int iProgressBarStatus = 0;
	TextView tvStatusProgressBar;

	
	@Override