进度条_移动开发_编程开发_程序员俱乐部

一个自动义的进度条

首先在”drawable“文件夹下添加两照用于进度条的图片,progress_bar_long.png,progress_bar.png

添加一个xml文件（progress_horizontal.xml）如下:

?

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
??? 
??? <item android:id="@android:id/background">
??????? <shape>
??????????? <corners android:radius="3dip" />
??????????? <gradient
??????????????????? android:startColor="#88ffffff"
??????????????????? android:centerColor="#889d9e9d"
??????????????????? android:centerY="0.75"
??????????????????? android:endColor="#88747674"
??????????????????? android:angle="270"
??????????? />
??????? </shape>
??? </item>
??? 
??? <item android:id="@android:id/secondaryProgress">
??????? <clip>
??????????? <shape>
??????????????? <corners android:radius="3dip" />
??????????????? <gradient
??????????????????????? android:startColor="#80ffd300"
??????????????????????? android:centerColor="#80ffb600"
??????????????????????? android:centerY="0.75"
??????????????????????? android:endColor="#a0ffcb00"
??????????????????????? android:angle="270"
??????????????? />
??????????? </shape>
??????? </clip>
??? </item>
??? 
??? <item android:id="@android:id/progress">
??????? <clip>
??????????? <shape>
??????????????? <corners android:radius="3dip" />
??????????????? <gradient
??????????????? ??android:drawable="@drawable/progress_bar"
??????????????????????? android:startColor="#ffdeef73"
??????????????????????? android:centerColor="#ff7ba608"
??????????????????????? android:centerY="0.75"
??????????????????????? android:endColor="#ffe7f79c"
??????????????????????? android:angle="270"
??????????????? />
??????????? </shape>
??????? </clip>
??? </item>
??? 
</layer-list>

2。在res/layout文件夹下添加main.xml如下

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
??? android:gravity="center_horizontal"
??? android:layout_width="fill_parent"
??? android:layout_height="fill_parent"
??? android:background="@drawable/music_detail_bg_picture">??? 
??? <RelativeLayout android:id="@+id/main_progressBar"
??? ?android:layout_width="fill_parent"
??? ?android:layout_height="30px"
??? ?android:layout_marginLeft="10px"
??? ?android:layout_marginTop="200px">
??? ?<ProgressBar android:id="@+id/progress_horizontal"
??????? android:layout_width="fill_parent"
??????? android:layout_height="wrap_content"
??????? android:indeterminateOnly="false"
??????? android:progressDrawable="@drawable/progress_horizontal"
??????? android:indeterminateDrawable="@android:drawable/progress_indeterminate_horizontal"
??????? android:maxHeight="10dip"
??????? android:minHeight="10dip"
??????? android:max="100"/>
??? </RelativeLayout>
</RelativeLayout>

3.代码

public class MainActivity extends Activity{
?/**
? * 界面
? */
?private View mainView;?
?/**
? * 进度条的进度
? */
?private int progress;
?/**
? * 进度条视图
? */
?private ProgressBar progressBar;
?/**
? * 定时器
? */
?private Timer timer;

?/**
? * 刷新进度条的handler
? */
?protected Handler processhandler = new Handler()
?{
??@Override
??public void handleMessage(Message msg)
??{
???switch (msg.what)
???{
???case 2:
????timer.cancel();
//????Intent intent = new Intent(
//??????MainActivity.this.getApplicationContext(),
//??????MainSearch.class);
//????startActivity(intent);
//????MainActivity.this.finish();
????break;
???default:
????break;
???}
???super.handleMessage(msg);
??}
?};

?public void onCreate(Bundle savedInstanceState)
?{
??super.onCreate(savedInstanceState);

??// 初始化要用的视图
??initViews();
??// 启动定时任务
??startLiveTimer();
?}

?/**
? *? 初始化要用的视图?? 
? */
?private void initViews()
?{
??// 实例化一个定时器
??timer = new Timer();
??// 获得显示广告界面的View
??mainView = View.inflate(this, R.layout.main, null);
??// 获得显示进度条的view
??progressBar = (ProgressBar) mainView
????.findViewById(R.id.progress_horizontal);
??setContentView(mainView);
?}

?/**
? * 启动发送live请求的定时器
? */
?public void startLiveTimer()
?{
??// 构造一个定时器任务对象
??TimerTask changeTask = new TimerTask()
??{
???/**
??? * 定时器任务的执行体
??? */
???public void run()
???{
????progress++;

????// 当加载进度小于100%的时候进行的操作
????if (progress > 0 && progress < 100)
????{
?????progressBar.setProgress(progress);
????}
????// 当加载完成时进行的操作
????else if (progress >= 100)
????{
?????progressBar.setProgress(progress);
?????processhandler.sendMessage(processhandler.obtainMessage(
???????2, null));
????}
???}
??};

??// 启动定时器
??timer.schedule(changeTask, 100, 100);
?}
}