Android中SeekBar拖动条控件使用方法详解

<SeekBar      android:id="@+id/SeekBar1"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:progress="30"     />

package fry;import com.example.SeekBarDemo1.R;import android.app.Activity;import android.os.Bundle;import android.widget.SeekBar;import android.widget.SeekBar.OnSeekBarChangeListener;import android.widget.TextView;import android.widget.Toast;public class Activity01 extends Activity implements OnSeekBarChangeListener{  private TextView textView1;  private TextView textView2;  private SeekBar seekBar1;  private SeekBar seekBar2;  @Override  protected void onCreate(Bundle savedInstanceState) {    // TODO Auto-generated method stub    super.onCreate(savedInstanceState);    setContentView(R.layout.activity01);    textView1=(TextView) findViewById(R.id.TextView1_seekBar);    textView2=(TextView) findViewById(R.id.TextView2_seekBar);    seekBar1=(SeekBar) findViewById(R.id.SeekBar1);    seekBar2=(SeekBar) findViewById(R.id.SeekBar2);    seekBar1.setOnSeekBarChangeListener(this);    seekBar2.setOnSeekBarChangeListener(this);  }  /*   * onProgressChanged：进度条改变事件   * onStartTrackingTouch：进度条开始拖动事件   * onStopTrackingTouch：进度条停止拖动事件   * (non-Javadoc)   * @see android.widget.SeekBar.OnSeekBarChangeListener#onProgressChanged(android.widget.SeekBar, int, boolean)   */  @Override  public void onProgressChanged(SeekBar seekBar, int progress,      boolean fromUser) {    // TODO Auto-generated method stub    if(seekBar1.getId()==R.id.SeekBar1){      Toast.makeText(this, "1111111", Toast.LENGTH_SHORT).show();      textView1.setText("seekBar1当前位置："+progress);    }else{      textView2.setText("seekBar2当前位置："+progress);    }  }  @Override  public void onStartTrackingTouch(SeekBar seekBar) {    // TODO Auto-generated method stub    if(seekBar1.getId()==R.id.SeekBar1){      textView1.setText("seekBar1开始拖动");    }else{      textView2.setText("seekBar2开始拖动：");    }  }  @Override  public void onStopTrackingTouch(SeekBar seekBar) {    // TODO Auto-generated method stub    if(seekBar1.getId()==R.id.SeekBar1){      textView1.setText("seekBar1停止拖动");    }else{      textView2.setText("seekBar2停止拖动：");    }  }}

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:orientation="vertical" >  <TextView     android:id="@+id/TextView1_seekBar"    android:layout_width="fill_parent"    android:layout_height="wrap_content"    android:text="TextView1"    />   <TextView     android:id="@+id/TextView2_seekBar"    android:layout_width="fill_parent"    android:layout_height="wrap_content"    android:text="TextView2"    />      <SeekBar      android:id="@+id/SeekBar1"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:progress="30"     />      <SeekBar      android:id="@+id/SeekBar2"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:progress="60"     /></LinearLayout>