android > layout > SeekBar (拉动条)

 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/v1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"/>

    <SeekBar
        android:id="@+id/seekBar1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

 

TestActivity.java

 

 

package test.mft;

import android.app.Activity;
import android.os.Bundle;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Toast;

public class TestActivity extends Activity {
    /** Called when the activity is first created. */
	private SeekBar s1;
	private TextView v1;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        v1 = (TextView)findViewById(R.id.v1);
        s1 = (SeekBar)findViewById(R.id.seekBar1);
        s1.setMax(100);
        
        int pro = 50;
        
        s1.setProgress(pro);
        v1.setText(""+pro);
        
        
        
        s1.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
			
        	//当停止时
			public void onStopTrackingTouch(SeekBar arg0) {
				// TODO Auto-generated method stub
				v1.setText(""+s1.getProgress());
			}
			
			//当开始拉动时
			public void onStartTrackingTouch(SeekBar arg0) {
				// TODO Auto-generated method stub
				v1.setText(""+s1.getProgress());
				
			}
			
			//当拉动条 改变值时
			public void onProgressChanged(SeekBar arg0, int arg1, boolean arg2) {
				// TODO Auto-generated method stub
				v1.setText(""+s1.getProgress());
				
			}
		});
        
    }
}

 

 

解决不能拖到到 最大值 问题  在 layout 中 设置  android:layout_margin="3dip"  属性即可

 

 

 

修改  风格

 

<SeekBar  
	android:id="@+id/seekBar1"  
	android:layout_width="130dip"  
	android:layout_height="wrap_content"
	android:max="100"
	android:layout_centerVertical="true"
	android:layout_toLeftOf="@id/sb_value_1"
	android:paddingLeft="5dip"
	android:paddingRight="8dip"
	android:progressDrawable="@drawable/seekbar_bg_img"	////------
	android:thumb="@drawable/seekbar_thumb"		////------
/> 

 

其中  @drawable/seekbar_bg_img 是背景图片 ，   @drawable/seekbar_thumb 是拖动按钮

 

图片参考附件