SeekBar拖動(dòng)條的使用方法

<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"
  android:background="@drawable/b1" >

  <TextView 
    android:id="@+id/status"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:hint="我是當(dāng)前拖動(dòng)條的狀態(tài)"
    android:textColor="#FFFFFF"
    android:layout_marginLeft="10dp"
    android:layout_marginTop="20dp"
    android:textSize="24dp"/>

  <SeekBar
    android:id="@+id/seek"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginLeft="10dp"
    android:layout_marginTop="20dp" />

  <TextView 
    android:id="@+id/show_values"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginLeft="10dp"
    android:layout_marginTop="20dp"
    android:text="當(dāng)前的值為0"
    android:textColor="#FFFFFF"
    android:textSize="24dp"/>
</LinearLayout>

package com.example.seekbar;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;

public class MainActivity extends Activity 
{
  TextView status,show;
  SeekBar seek=null;

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

    status=(TextView) findViewById(R.id.status);
    show=(TextView) findViewById(R.id.show_values);
    seek=(SeekBar) findViewById(R.id.seek);

    //為拖動(dòng)條添加事件監(jiān)聽(tīng)
    seek.setOnSeekBarChangeListener(new OnSeekBarChangeListener()
    {

      @Override
      public void onStopTrackingTouch(SeekBar arg0) 
      {
        //當(dāng)檢測(cè)到拖動(dòng)條停止滑動(dòng)時(shí)的一個(gè)方法
        status.setText("停止拖動(dòng)");
      }

      @Override
      public void onStartTrackingTouch(SeekBar arg0) 
      {
        //當(dāng)檢測(cè)到拖動(dòng)條開(kāi)始滑動(dòng)，第一次滑動(dòng)
        status.setText("開(kāi)始滑動(dòng)");
      }

      @Override
      public void onProgressChanged(SeekBar arg0, int arg1, boolean arg2) 
      {
        //當(dāng)檢測(cè)到拖動(dòng)條開(kāi)始位置改變的一個(gè)方法,其中arg1表示當(dāng)前滑動(dòng)的values
        status.setText("正在滑動(dòng)");
        show.setText("當(dāng)前的值為:"+arg1);
      }
    });
  }

  @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;
  }

}