安卓--拖动条（SeekBar）实例

标签：android   seekbar   

main.xml代码如下：

<?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" >

    <SeekBar
        android:id="@+id/seekbar"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/text"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:scrollbars="vertical" />

</LinearLayout>

package org.lxh.demo;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.text.method.ScrollingMovementMethod;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Button;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.Spinner;
import android.widget.TextView;

public class Hello extends Activity {
	private SeekBar seek = null;
	private TextView text = null;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState); // 生命周期方法
		super.setContentView(R.layout.main); // 设置要使用的布局管理器
		this.seek = (SeekBar) super.findViewById(R.id.seekbar);
		this.text = (TextView) super.findViewById(R.id.text);
		this.text.setMovementMethod(ScrollingMovementMethod.getInstance());
		this.seek.setOnSeekBarChangeListener(new OnSeekBarChangeListenerImpl());
	}

	private class OnSeekBarChangeListenerImpl implements
			OnSeekBarChangeListener {

		public void onProgressChanged(SeekBar seekBar, int progress,
				boolean fromUser) {
			Hello.this.text.append("***正在拖动，当前值为：" + seekBar.getProgress()
					+ "\n");

		}

		public void onStartTrackingTouch(SeekBar seekBar) {
			text.append("***开始拖动，当前值为：" + seekBar.getProgress() + "\n");

		}

		public void onStopTrackingTouch(SeekBar seekBar) {
			text.append("***停止拖动，当前值为：" + seekBar.getProgress() + "\n");

		}

	}
}

源码下载：http://download.csdn.net/detail/yayun0516/8379373

安卓--拖动条（SeekBar）实例

标签：android   seekbar   

原文地址：http://blog.csdn.net/yayun0516/article/details/42917535