시크바(SeekBar)

Activity_main.xml

 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:id="@+id/LinearLayout1"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    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=".MainActivity" >

 

    <SeekBar

        android:id="@+id/seekbar"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:max="100"

        android:progress="50" />

 

    <TextView

        android:id="@+id/volume"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="Now volume : 50" />

 

</LinearLayout>

 

MainActivity.java

 

package com.example.seekbar;

 

import android.app.Activity;

import android.os.Bundle;

import android.view.Menu;

import android.widget.SeekBar;

import android.widget.TextView;

 

public class MainActivity extends Activity {

 

     SeekBar mSeekBar;

     TextView mVolume;

    

     @Override

     protected void onCreate(Bundle savedInstanceState) {

           super.onCreate(savedInstanceState);

           setContentView(R.layout.activity_main);

          

           mSeekBar = (SeekBar)findViewById(R.id.seekbar);

           mVolume = (TextView)findViewById(R.id.volume);

          

           mSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

               

                @Override

                public void onStopTrackingTouch(SeekBar seekBar) {

                     // TODO Auto-generated method stub

                    

                }

               

                @Override

                public void onStartTrackingTouch(SeekBar seekBar) {

                     // TODO Auto-generated method stub

                    

                }

               

                @Override

                public void onProgressChanged(SeekBar seekBar, int progress,

                           boolean fromUser) {

                     // TODO Auto-generated method stub

                     mVolume.setText("Now volume : " + progress);

                    

                }

           });

     }

 

     @Override

     public boolean onCreateOptionsMenu(Menu menu) {

           // Inflate the menu; this adds items to the action bar if it is present.

           getMenuInflater().inflate(R.menu.main, menu);

           return true;

     }

 

}