Update Progress Bar using Buttons OR Spinner

(UI Layout)showdata.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" >

    <Spinner
        android:id="@+id/spinner1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="71dp" />
    <ProgressBar
        android:id="@+id/progress"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="fill_parent"
        android:max="100"
        android:layout_height="wrap_content"
        android:layout_below="@+id/spinner1"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="46dp"
        android:progress="0"/>
    <Button
        android:id="@+id/button1"
        style="?android:attr/buttonStyleSmall"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/spinner1"
        android:layout_alignBottom="@+id/spinner1"
        android:layout_alignParentLeft="true"
        android:text="-" />
    <Button
        android:id="@+id/button2"
        style="?android:attr/buttonStyleSmall"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/spinner1"
        android:layout_alignBottom="@+id/spinner1"
        android:layout_alignParentRight="true"
        android:text="+" />
</RelativeLayout>

Activity( ShowSpinner .java)

package com.surya.spinner;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.ProgressBar;

import android.widget.Spinner;

import android.widget.Toast;

import android.app.Activity;

public class ShowSpinner extends Activity implements OnClickListener {

ProgressBar bar;

Button plus, minus;

Spinner spinner;

int i;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.showdata);

plus = (Button) findViewById(R.id.button2);

plus.setOnClickListener(this);

minus = (Button) findViewById(R.id.button1);

minus.setOnClickListener(this);

bar = (ProgressBar) findViewById(R.id.progress);

String aList[] = getResources().getStringArray(R.array.values);

spinner = (Spinner) findViewById(R.id.spinner1);

ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,

android.R.layout.simple_spinner_item, aList);

adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

spinner.setAdapter(adapter);

spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

@Override

public void onItemSelected(AdapterView<?> parent, View view,

int pos, long id) {

Object item = parent.getItemAtPosition(pos);

Toast.makeText(getApplicationContext(), "selcted" + item,

Toast.LENGTH_SHORT).show();

bar.setProgress(Integer.parseInt(item.toString()));

}

@Override

public void onNothingSelected(AdapterView<?> parent) {

}

});

}

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

i = bar.getProgress();

switch (v.getId()) {

case R.id.button1:

if (i != 0)

i = i - 10;

setValues();

break;

case R.id.button2:

if (i != 100)

i = i + 10;

setValues();

break;

}

}

void setValues() {

for (int j = 0; j <= 10; j++) {

if (i == (j * 10)) {

spinner.setSelection(j);

bar.setProgress(i);

}

}

}

}

Strings.Xml

<resources>

<string-array name="values">

        <item>0</item>

        <item>10</item>

        <item>20</item>

        <item>30</item>

        <item>40</item>

        <item>50</item>

        <item>60</item>

        <item>70</item>

        <item>80</item>

        <item>90</item>

        <item>100</item>

    </string-array>

</resources>

Output Screenshot:

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