Android SeekBar拖动条的使用
1. [代码]layout
<?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>
2. [代码]Test_SeekBar.java
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");
}
}
