Android how to add ScrollView - android-layout

Question

I want to add to my application ScreenView, but i'm only getting error.
My layout:
<LinearLayout 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"
android:background="#color/bg"
android:id="#+id/mainlayout"
tools:context=".NwActivity" android:baselineAligned="false">
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:id="#+id/rlA" >
<TextView
android:id="#+id/teamA"
android:text="#string/teamA"
android:textSize="24sp"
style="#style/Txt" />
<Button
android:id="#+id/pAddA"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/teamA"
style="#style/Txt"
android:text="#string/pAdd"
android:onClick="addA" />
<EditText
android:id="#+id/eta0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/pAddA"
style="#style/Txt"
android:hint="#string/pHint" />
</RelativeLayout>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="1"
android:id="#+id/rlB" >
<TextView
android:id="#+id/teamB"
android:text="#string/teamB"
android:textSize="24sp"
style="#style/Txt" />
<Button
android:id="#+id/pAddB"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/teamB"
style="#style/Txt"
android:text="#string/pAdd"
android:onClick="addB" />
</RelativeLayout>
</ScrollView>
</LinearLayout>
Activity:
package some.program;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.EditText;
import android.widget.RelativeLayout;
public class NwActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_nw);
}
public int skid = 0;
public void addA(View view) {
if(skid < 14) {
skid = skid + 1;
//LinearLayout ll = (LinearLayout) findViewById(R.id.mainlayout);
RelativeLayout rl = (RelativeLayout) findViewById(R.id.rlA);
EditText et1 = new EditText(this);
et1.setHint(R.string.pHint);
String strID = "eta" + skid;
int nid = getResources().getIdentifier(strID, "id", this.getPackageName());
et1.setId(nid);
int oskid = skid - 1;
int oid;
String resID = "eta" + oskid;
oid = getResources().getIdentifier(resID, "id", this.getPackageName());
RelativeLayout.LayoutParams params1= new RelativeLayout.LayoutParams
( LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
params1.addRule(RelativeLayout.BELOW, oid);
params1.addRule(RelativeLayout.CENTER_HORIZONTAL);
et1.setLayoutParams(params1);
et1.setTextAppearance(this, R.style.Txt);
rl.addView(et1);
}
}
public void addB(View view) {
}
}
How can i add ScrollView, that will not make mess on my layout? When clicking Button, app is creating EditText forms. Everything works fine, but all EditText fields don't fit on layout and don't appear.

Answer 1

There may be some other issues in your layout, some of the issues which I have found are
Firstly ScrollView only takes one direct child, while you are declaring two views rlA and rlB in ScrollView. (You can make it working by putting ScrollView as your main layout and putting LinearLayout in place of ScrollView)
Secondly you should add layout_width and layout_height attributes for your layouts (I guess you are already declaring in your STYLES).