自定义ProgressBar的加载效果

三种方式实现自定义圆形页面加载中效果的进度条

To get a ProgressBar in the default theme that is to be used on white/light back ground, use one of the inverse styles:
<ProgressBar style="@android:style/Widget.ProgressBar.Inverse"/>
<ProgressBar style="@android:style/Widget.ProgressBar.Large.Inverse"/>
<ProgressBar style="@android:style/Widget.ProgressBar.Small.Inverse"/>

进度条

1. <ProgressBar android:layout_width="fill_parent" android:layout_height="wrap_content" style="?android:attr/progressBarStyleHorizontal"  />

<ProgressBar android:layout_width="fill_parent" android:layout_height="wrap_content" style="?android:attr/progressBarStyleHorizontal"  />

一、通过动画实现
定义res/anim/loading.xml如下：

1. <?xml version="1.0" encoding="UTF-8"?>
2. <animation-list android:oneshot="false"
3. xmlns:android="http://schemas.android.com/apk/res/android">
4. <item android:duration="150" android:drawable="@drawable/loading_01" />
5. <item android:duration="150" android:drawable="@drawable/loading_02" />
6. <item android:duration="150" android:drawable="@drawable/loading_03" />
7. <item android:duration="150" android:drawable="@drawable/loading_04" />
8. <item android:duration="150" android:drawable="@drawable/loading_05" />
9. <item android:duration="150" android:drawable="@drawable/loading_06" />
10. <item android:duration="150" android:drawable="@drawable/loading_07" />
11. </animation-list>

<?xml version="1.0" encoding="UTF-8"?>
<animation-list android:oneshot="false"
  xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:duration="150" android:drawable="@drawable/loading_01" />
  <item android:duration="150" android:drawable="@drawable/loading_02" />
  <item android:duration="150" android:drawable="@drawable/loading_03" />
  <item android:duration="150" android:drawable="@drawable/loading_04" />
  <item android:duration="150" android:drawable="@drawable/loading_05" />
  <item android:duration="150" android:drawable="@drawable/loading_06" />
  <item android:duration="150" android:drawable="@drawable/loading_07" />
</animation-list> 

在layout文件中引用如下：

1. <ProgressBar
2. android:layout_width="wrap_content"
3. android:layout_height="wrap_content"
4. android:indeterminate="false"
5. android:indeterminateDrawable="@anim/loading" />

<ProgressBar
  android:layout_width="wrap_content"
android:layout_height="wrap_content"
  android:indeterminate="false"
android:indeterminateDrawable="@anim/loading" />

二、通过自定义颜色实现
定义res/drawable/dialog_style_xml_color.xml如下：

1. <?xml version="1.0" encoding="utf-8"?>
2. <rotate xmlns:android="http://schemas.android.com/apk/res/android"
3. android:pivotX="50%" android:pivotY="50%" android:fromDegrees="0"
4. android:toDegrees="360">
5. <shape android:shape="ring" android:innerRadiusRatio="3"
6. android:thicknessRatio="8" android:useLevel="false">
7. <gradient android:type="sweep" android:useLevel="false"
8. android:startColor="#FFFFFF" android:centerColor="#FFDC35"
9. android:centerY="0.50" android:endColor="#CE0000" />
10. </shape>
11. </rotate>

<?xml version="1.0" encoding="utf-8"?>
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
android:pivotX="50%" android:pivotY="50%" android:fromDegrees="0"
android:toDegrees="360">
<shape android:shape="ring" android:innerRadiusRatio="3"
  android:thicknessRatio="8" android:useLevel="false">
  <gradient android:type="sweep" android:useLevel="false"
   android:startColor="#FFFFFF" android:centerColor="#FFDC35"
   android:centerY="0.50" android:endColor="#CE0000" />
</shape>
</rotate>

在layout文件中引用如下：

1. <ProgressBar
2. android:layout_width="wrap_content"
3. android:layout_height="wrap_content"
4. android:indeterminate="false" android:indeterminateDrawable="@drawable/dialog_style_xml_color" />

<ProgressBar
  android:layout_width="wrap_content"
android:layout_height="wrap_content"
  android:indeterminate="false" android:indeterminateDrawable="@drawable/dialog_style_xml_color" />

三、使用一张图片进行自定义
定义res/drawable/dialog_style_xml_icon.xml如下：

1. <?xml version="1.0" encoding="utf-8"?>
2. <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
3. <item>
4. <rotate android:drawable="@drawable/dialog_progress_round"
5. android:fromDegrees="0.0"
6. android:toDegrees="360.0"
7. android:pivotX="50.0%"
8. android:pivotY="50.0%" />
9. </item>
10. </layer-list>

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
  <rotate android:drawable="@drawable/dialog_progress_round"
   android:fromDegrees="0.0"
android:toDegrees="360.0"
android:pivotX="50.0%"
   android:pivotY="50.0%" />
</item>
</layer-list>

在layout文件中引用如下：

1. <ProgressBar
2. android:layout_width="wrap_content"
3. android:layout_height="wrap_content"
4. android:indeterminate="false" android:indeterminateDrawable="@drawable/dialog_style_xml_icon" />

<ProgressBar
  android:layout_width="wrap_content"
android:layout_height="wrap_content"
  android:indeterminate="false" android:indeterminateDrawable="@drawable/dialog_style_xml_icon" />

或者使用<animated-rotate/>旋转一张图片：

1. <ProgressBar
2. style="@android:style/Widget.ProgressBar"
3. android:layout_width="wrap_content"
4. android:layout_height="wrap_content"
5. android:indeterminateDrawable="@drawable/custom_progress_draw"
6. android:indeterminate="false" />

<ProgressBar
        style="@android:style/Widget.ProgressBar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:indeterminateDrawable="@drawable/custom_progress_draw"
        android:indeterminate="false" />

custom_progress_draw.xml:

1. <?xml version="1.0" encoding="utf-8"?>
2. <animated-rotate xmlns:android="http://schemas.android.com/apk/res/android"
3. android:drawable="@drawable/circular"
4. android:pivotX="50%"
5. android:pivotY="50%" />

<?xml version="1.0" encoding="utf-8"?>
<animated-rotate xmlns:android="http://schemas.android.com/apk/res/android"
    android:drawable="@drawable/circular"
    android:pivotX="50%"
    android:pivotY="50%" />

circular就是一张转动效果的静态图片。

main.xml如下：

1. <?xml version="1.0" encoding="utf-8"?>
2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3. android:orientation="vertical" android:layout_width="fill_parent"
4. android:layout_height="fill_parent" android:gravity="center"
5. android:background="#FFF">
6. <Button android:text="@string/anim" android:id="@+id/anim"
7. android:layout_width="120dip" android:layout_height="wrap_content" />
8. <Button android:text="@string/color" android:id="@+id/color"
9. android:layout_width="120dip" android:layout_height="wrap_content" />
10. <Button android:text="@string/icon" android:id="@+id/icon"
11. android:layout_width="120dip" android:layout_height="wrap_content" />
12. </LinearLayout>

<?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" android:gravity="center"
android:background="#FFF">
<Button android:text="@string/anim" android:id="@+id/anim"
  android:layout_width="120dip" android:layout_height="wrap_content" />
<Button android:text="@string/color" android:id="@+id/color"
  android:layout_width="120dip" android:layout_height="wrap_content" />
<Button android:text="@string/icon" android:id="@+id/icon"
  android:layout_width="120dip" android:layout_height="wrap_content" />
</LinearLayout>

新浪下载图片的ProgressBar进度样式源码
http://www.eoeandroid.com/code/2012/0711/1851.html

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• CountDown.zip (286.6 KB)
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