我想创建Android中的自定义进度条。我已经使用下面的XML文件，它（progress_bar_horizo​​ntal.xml）：

I am trying to create a custom progress bar in android. I have used the following xml file for it (progress_bar_horizontal.xml):

<?xml version="1.0" encoding="utf-8"?>
 <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:id="@android:id/background">
   <shape>
    <corners android:radius="8dip" />
    <stroke android:width="2dip" android:color="#FFFF"/>
    <solid android:color="#FFFF"/>              
   </shape>
  </item>
  <item android:id="@android:id/secondaryProgress">
   <clip>
    <shape>
     <corners android:radius="8dip" />
     <stroke android:width="2dip" android:color="#FFFF"/>
     <solid android:color="#FF00"/> 
    </shape>
   </clip>
  </item>
  <item android:id="@android:id/progress">
   <clip>
    <shape>
     <corners android:radius="8dip" />
     <stroke android:width="2dip" android:color="#FFFF"/>
     <solid android:color="#FF00"/> 
    </shape>
   </clip>
  </item>
 </layer-list>

一切的伟大工程，除了因为我想在我的圆润两侧进度条。上述code使得一个进度条要舍入在左手侧和简单地切断（未四舍五入）在右手侧。这是因为可能是剪辑标记。你能帮我一下吗？我应该怎么改有圆形双方在我的进度条？

Everything works great apart from the fact I would like to have the progress in my progress bar rounded on both sides. The aforementioned code makes a progress bar to be rounded on the left hand side and simply cut (not rounded) on the right hand side. It is because of the clip tag probably. Could you please help me on that? What should i change to have the progress in my progress bar rounded on both sides?

版式的完全低于：

<?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="wrap_content"
  android:orientation="vertical">
  <LinearLayout
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:orientation="vertical"
  android:background="@drawable/gradient_progress"
  android:padding="10dip"
  >
   <LinearLayout
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:orientation="horizontal"
   >
    <TextView
     android:id="@+id/progress_header"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:textColor="#FF000000"
     android:textAppearance="?android:attr/textAppearanceMedium"
     android:textStyle="bold"
     android:text="Uploading"               
    />
    <TextView
     android:id="@+id/progress_percent"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:textColor="#FF000000"
     android:textAppearance="?android:attr/textAppearanceMedium"
     android:textStyle="bold"
     android:text="55%"         
     android:paddingLeft="10dip"
    />      
   </LinearLayout>          
   <ProgressBar
    android:id="@+id/progress_bar"
    style="?android:attr/progressBarStyleHorizontal"
    android:layout_gravity="center"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:progressDrawable="@drawable/progress_bar_horizontal"
    android:maxHeight="12dip"    
    android:minHeight="12dip"    
    android:max="100" 
   />
  </LinearLayout>
 </LinearLayout>

下面是我努力的结果：链接文本

Here is the result of my effort: link text

我想红条对右手边圆形的边缘也是如此。 非常感谢你的意见。

I would like the red bar to have rounded edges on the right hand side as well. Thank you so much for your comments.

推荐答案

下面是时代的最新答案是：

Here's an updated answer for the times:

在Android源$ C ​​$ C使用补丁9文件来达到的效果： http://grep$c$c.com/file/repository.grep$c$c.com/java/ext/com.google.android/android/4.4_r1/frameworks/base/core/res/res/drawable/progress_horizontal_holo_dark.xml/

The Android source code uses Patch 9 files to achieve the effect: http://grepcode.com/file/repository.grepcode.com/java/ext/com.google.android/android/4.4_r1/frameworks/base/core/res/res/drawable/progress_horizontal_holo_dark.xml/

因此​​，开始在布局的xml：

So start in your layout xml:

<ProgressBar
    android:id="@+id/custom_progress_bar"
    style="@android:style/Widget.ProgressBar.Horizontal"
    android:indeterminateOnly="false"
    android:progressDrawable="@drawable/custom_progress_bar_horizontal"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:minHeight="13"
    android:progress="33"
    android:secondaryProgress="66" />

您可以将大量的这一种风格的XML但那是题外话。我们真正关心的是安卓progressDrawable =@可绘制/ custom_progress_bar_horizo​​ntal - 这将允许我们指定自己的自定义进度条：

You can move a lot of this to a style xml but that's beside the point. What we really care about is android:progressDrawable="@drawable/custom_progress_bar_horizontal" - which is going to allow us to specify our own custom progress bars:

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@android:id/background"
          android:drawable="@android:drawable/custom_progress_bg" />
    <item android:id="@android:id/secondaryProgress">
        <scale android:scaleWidth="100%"
               android:drawable="@android:drawable/custom_progress_secondary" />
    </item>
    <item android:id="@android:id/progress">
        <scale android:scaleWidth="100%"
               android:drawable="@android:drawable/custom_progress_primary" />
    </item>
</layer-list>

或者你没有使用补丁9的背景 - 例如，这里有一个简单的白色背景与1DP边框：

Or you don't have to use a Patch 9 for your background- for example here's a simple white background with a 1dp border:

<item android:id="@android:id/background">
    <shape>
        <corners android:radius="6.5dp" />

        <solid android:color="@android:color/white" />

        <stroke
            android:width="1dp"
            android:color="@android:color/darker_gray" />
    </shape>
</item>

Android的资产Studio有一个真棒工具来帮助你生成补丁9个文件： http://android-ui-utils.google$c$c.com/hg/asset-studio/dist/nine-patches.html

Android Asset Studio has an awesome tool to help you generate Patch 9 files: http://android-ui-utils.googlecode.com/hg/asset-studio/dist/nine-patches.html

例原发性xdpi PNG由于该工具之前填充： 例如二次xdpi与工具之前填充巴布亚新几内亚：

Example primary xdpi png with padding before the tool: Example secondary xdpi png with padding before the tool:

和最终的输出：

And the final output: