Android SeekBar的使用

Android SeekBar的使用

 

 

<?xml version="1.0" encoding="utf-8"?>  
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
        android:orientation="vertical" android:layout_width="fill_parent"  
        android:layout_height="fill_parent">  
        <SeekBar android:id="@+id/SeekBar01" android:layout_width="fill_parent"  
            android:layout_height="wrap_content" android:max="100"  
            android:progress="50" android:secondaryProgress="100"></SeekBar>  
        <TextView android:id="@+id/TextView1" android:layout_width="fill_parent"  
            android:layout_height="wrap_content" android:text="" />  
        <TextView android:id="@+id/TextView2" android:layout_width="fill_parent"  
            android:layout_height="wrap_content" android:text="" />  
    </LinearLayout>

 

package com.Aina.Android;  
      
    import android.app.Activity;  
    import android.os.Bundle;  
    import android.widget.SeekBar;  
    import android.widget.TextView;  
      
    public class Test_SeekBar extends Activity implements SeekBar.OnSeekBarChangeListener{  
        /** Called when the activity is first created. */  
        private SeekBar seekBar;  
        private TextView textView1,textView2;  
        @Override  
        public void onCreate(Bundle savedInstanceState) {  
            super.onCreate(savedInstanceState);  
            setContentView(R.layout.main);  
            seekBar = (SeekBar) this.findViewById(R.id.SeekBar01);  
            textView1 = (TextView) this.findViewById(R.id.TextView1);  
            textView2 = (TextView) this.findViewById(R.id.TextView2);  
            seekBar.setOnSeekBarChangeListener(this);//添加事件监听  
        }  
        //拖动中  
        @Override  
        public void onProgressChanged(SeekBar seekBar, int progress,  
                boolean fromUser) {  
            this.textView1.setText("当前值:"+progress);  
              
        }  
        //开始拖动  
        @Override  
        public void onStartTrackingTouch(SeekBar seekBar) {  
            this.textView2.setText("拖动中...");  
              
        }  
        //结束拖动  
        @Override  
        public void onStopTrackingTouch(SeekBar seekBar) {  
            this.textView2.setText("拖动完毕");  
              
        }  
    }