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 stubv1.setText(""+s1.getProgress());}//当开始拉动时public void onStartTrackingTouch(SeekBar arg0) {// TODO Auto-generated method stubv1.setText(""+s1.getProgress());}//当拉动条 改变值时public void onProgressChanged(SeekBar arg0, int arg1, boolean arg2) {// TODO Auto-generated method stubv1.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

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