android ProgressBar 示范二

android ProgressBar 示例二
   关于ProgressBar的示例一请见这里http://byandby.iteye.com/blog/816494
这也是一个小例子比较简单  下边是官方文档对xml文件属性的一些简单描述
Attribute                                   Description
android:indeterminate           Allows to enable the indeterminate mode.
android:indeterminateBehavior   Defines how the indeterminate mode should behave when the progress reaches max.
android:indeterminateDrawable   Drawable used for the indeterminate mode.
android:indeterminateDuration   Duration of the indeterminate animation.
android:indeterminateOnly           Restricts to ONLY indeterminate mode (state-keeping progress mode will not work).
android:interpolator
android:max                           Defines the maximum value the progress can take.
android:maxHeight                   An optional argument to supply a maximum height for this view.
android:maxWidth                   An optional argument to supply a maximum width for this view.
android:minHeight
android:minWidth
android:progress                  Defines the default progress value, between 0 and max.
android:progressDrawable          Drawable used for the progress mode.
android:secondaryProgress Defines the secondary progress value, between 0 and max.
  我们先看一下运行效果吧。



示例布局文件
<?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"
    >
<TextView 
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/hello"
    />
<ProgressBar
android:id="@+id/firstBar"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:visibility="gone"
/>
<ProgressBar
android:id="@+id/secondBar"
style="?android:attr/progressBarStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="gone"
/>
<Button
android:id="@+id/myButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="begin"/>
</LinearLayout>
Activity 类

package xiaohang.zhimeng;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ProgressBar;public class Activity01 extends Activity {	//声明变量	private ProgressBar firstBar = null;	private ProgressBar secondBar = null;	private Button myButton;	private int i = 0;	    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        //根据控件的ID取得代表控件的对象        firstBar = (ProgressBar)findViewById(R.id.firstBar);        secondBar = (ProgressBar)findViewById(R.id.secondBar);        myButton = (Button)findViewById(R.id.myButton);        myButton.setOnClickListener(new ButtonListener());            }        class ButtonListener implements OnClickListener{		@Override		public void onClick(View v) {			if (i == 0 || i == 10) {				//设置进度条处于可见的状态				firstBar.setVisibility(View.VISIBLE);				firstBar.setMax(150);				secondBar.setVisibility(View.VISIBLE);			}else if ( i< firstBar.getMax() ) {				//设置主进度条的当前值				firstBar.setProgress(i);				//设置第二进度条的当前值				firstBar.setSecondaryProgress(i + 10);			}else {				//设置主进度为0				firstBar.setProgress(0);				//设置第二进度为0				firstBar.setSecondaryProgress(0);				//把i的值 设置为0				i = 0;				firstBar.setVisibility(View.GONE);				secondBar.setVisibility(View.GONE);			}			i = i + 10;		}    }}

android 2.0 APILEVEL 5
源码见 附件  运行效果图片 见附件