how to connect two layouts in eclips - android-layout

Question

I'm beginner in Java Android developing. i have two XML file in res/layout/. named activity_fast_tip.xml and activity_setting.xml i can't connect these two component together. in activity_setting.xml
#Override
protected void onCreate (Bundle savedInstanceState)
{
super.onCreate (savedInstanceState);
setContentView(R.layout.activity_fast_tip);
tipPctTextView=(TextView)this.findViewById(R.id.tipPctTextView);
tipAmountTextView=(TextView)this.findViewById(R.id.tipAmtTextView);
totalAmountTextView=(TextView)this.findViewById(R.id.totalAmtTextView);
calcTipAmountButton=(Button)this.findViewById(R.id.calcTipButton);
billAmountTextView=(EditText)this.findViewById(R.id.billAmtEditText);
calcTipAmountButton.setOnClickListener(new onClickListener()
{
#Override
public void onClick(View v) {
calculateTip();
}
});
}
and in activity_fast_tip
<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=".FastTipActivity" >
<EditText
android:id="#+id/billAmtEditText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:ems="10"
android:gravity="right|center_vertical"
android:hint="#string/billAmount"
android:inputType="number|numberSigned|numberDecimal" >
<requestFocus />
</EditText>
<Button
android:id="#+id/calcTipButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/billAmtEditText"
android:layout_centerHorizontal="true"
android:layout_marginTop="19dp"
android:text="#string/calculateTip" />
<TextView
android:id="#+id/TextView01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/billAmtEditText"
android:layout_below="#id/calcTipButton"
android:layout_marginTop="18dp"
android:text="#string/tipPercentage"
android:textAppearance="?android:attr/textAppearanceMedium"/>
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/TextView01"
android:layout_below="#+id/TextView01"
android:layout_marginLeft="0dp"
android:layout_marginTop="18dp"
android:text="#string/tipAmount"
android:textAppearance="?android:attr/textAppearanceMedium"/>
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/textView1"
android:layout_below="#+id/textView1"
android:layout_marginTop="18dp"
android:text="#string/totalAmount"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#FF0000" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignRight="#+id/billAmtEditText"
android:layout_marginBottom="35dp"
android:text="#string/button" />

Answer 1

use layout inflater
http://developer.android.com/reference/android/view/LayoutInflater.html
or Include
<include
android:layout_width="fill_parent"
android:layout_height="fill_parent"
layout="#layout/activity_setting"
/>

Answer 2

u can use include tag a layout like this into another layout
titlebar.xml
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width=”match_parent”
android:layout_height="wrap_content"
android:background="#color/titlebar_bg">
<ImageView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/gafricalogo" />
</FrameLayout>
some other layout where we include that titlebar.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width=”match_parent”
android:layout_height=”match_parent”
android:background="#color/app_bg"
android:gravity="center_horizontal">
<include layout="#layout/titlebar"/>
<TextView android:layout_width=”match_parent”
android:layout_height="wrap_content"
android:text="#string/hello"
android:padding="10dp" />
...
</LinearLayout>
http://developer.android.com/training/improving-layouts/reusing-layouts.html
2. u can use LayoutInflater
code snippet
LayoutInflater inflater = (LayoutInflater)context.getSystemService
(Context.LAYOUT_INFLATER_SERVICE);
View someView = inflater.inflate(R.layout.ur_layout,null); //2nd parameter is for viewgroup
which_layout_u_want_to_add.addView(someView);
http://developer.android.com/reference/android/view/LayoutInflater.html