Android - แอฟ แอนดรอยนะครับสอบถามว่า เกี่ยวกับ arraylist และการโชว์ข้อมูลให้เก็บตามที่เราใช้ข้อมูลไว้ใน arraylist นะครับ

package example.testing;

import java.util.ArrayList;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;


public class MainActivity extends Activity {

private EditText getdata;
private Button Ok;
private Button Show;
private ArrayList<String> data;
TextView textView1;
TextView textView2;
TextView textView3;
TextView textView4;
TextView textView5;

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


// view matching

getdata = (EditText) findViewById(R.id.editText1);
Ok = (Button) findViewById(R.id.gettext);
textView1 = (TextView)findViewById(R.id.textView1);
textView2 = (TextView)findViewById(R.id.textView2);
textView3 = (TextView)findViewById(R.id.textView3);
textView4 = (TextView)findViewById(R.id.textView4);
textView5 = (TextView)findViewById(R.id.textView5);
data = new ArrayList<String>();


Ok.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
data .add(getdata.getText().toString());
int Len;
String S;
Len = data.size();
for(int i=0;i<Len;i++){
	S = data.get(i).toString();
	cutString(S);
}
}

});
}

//@Override
 //TODO Auto-generated method stub
	
	
	public void cutString(String s){
		String str11,str12,str13,str14,str10,SA;
		ArrayList<String> strArr = new ArrayList<String>();
		str14 = s.substring(1, 2);
		str13 = s.substring(3, 4);
		str12 = s.substring(6, 7);
		str11 = s.substring(8, 10);
		str10 = s.substring(10, 12);
		//txtRTD.setText(str14 + str13 + str12 + str11 + str10);
		strArr.add(str14);
		SA = strArr.toString();
		textView4.setText("Mode : " + SA);
		textView2.setText("Point : " + str13);
		textView5.setText("Pass/Fail : " + str12);
		int intS = Integer.parseInt(str10);
		ArrAddS(intS);
		int intMS = Integer.parseInt(str11);
		ArrAddMS(intMS);
		
	}
	
	public int ArrAddS (int x){
		ArrayList<Integer> arr_value = new ArrayList<Integer>();
		arr_value.add(x);
		totalMS(arr_value);
		return x; 
	}
	public int ArrAddMS (int y){
		ArrayList<Integer> arr_value = new ArrayList<Integer>();
		arr_value.add(y);
		totalS(arr_value);
		return y; 
	}
	
	public void totalS (ArrayList<Integer> arr_value){
		int int_total = 0;
		for(int i = 0 ; i < arr_value.size() ; i++) {
			int_total += (Integer) arr_value.get(i);
		}
		int float_avg;
		float_avg = (int)int_total / arr_value.size();
		String b = String.valueOf(float_avg);
		textView1.setText("Time AVG : " + b + ":");
		return ;
	}
	public void totalMS (ArrayList<Integer> arr_value){
		int int_total = 0;
		for(int i = 0 ; i < arr_value.size() ; i++) {
			int_total += (Integer) arr_value.get(i);
		}
		int float_avg;
		float_avg = (int)int_total / arr_value.size();
		String b = String.valueOf(float_avg);
		textView3.setText(b);
		return ;
	}

}

<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:gravity="center_vertical"
    tools:context=".MainActivity" >

    <EditText
        android:id="@+id/editText1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="49dp"
        android:ems="10" />

    <Button
        android:id="@+id/gettext"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/editText1"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="76dp"
        android:text="บันทึก" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/gettext"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="22dp"
        android:text="TextView" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/gettext"
        android:layout_below="@+id/textView1"
        android:text="TextView" />

    <TextView
        android:id="@+id/textView5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView2"
        android:layout_below="@+id/textView2"
        android:text="TextView" />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView5"
        android:layout_below="@+id/textView5"
        android:text="TextView" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/textView1"
        android:layout_alignBottom="@+id/textView1"
        android:layout_alignRight="@+id/editText1"
        android:text="TextView" />

</RelativeLayout>