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Android編程實現(xiàn)自定義進度條顏色的方法

 更新時間：2015年11月23日 12:44:36   作者：sengeiou  
這篇文章主要介紹了Android編程實現(xiàn)自定義進度條顏色的方法,涉及Android進度條的樣式布局及功能實現(xiàn)技巧,具有一定參考借鑒價值,需要的朋友可以參考下

本文實例講述了Android編程實現(xiàn)自定義進度條顏色的方法。分享給大家供大家參考，具體如下：

android 自定義進度條顏色

先看圖

基于產(chǎn)品經(jīng)理各種自定義需求，經(jīng)過查閱了解，下面是自己對android自定義進度條的學(xué)習(xí)過程！

這個沒法了只能看源碼了，還好下載了源碼， sources\base\core\res\res\  下應(yīng)有盡有，修改進度條顏色只能找progress ,因為是改變樣式，首先找styles.xml
找到xml后，進去找到

<style name="Widget.ProgressBar"> 
    <item name="android:indeterminateOnly">true</item> 
    <item name="android:indeterminateDrawable">@android:drawable/progress_medium_white</item> 
    <item name="android:indeterminateBehavior">repeat</item> 
    <item name="android:indeterminateDuration">3500</item> 
    <item name="android:minWidth">48dip</item> 
    <item name="android:maxWidth">48dip</item> 
    <item name="android:minHeight">48dip</item> 
    <item name="android:maxHeight">48dip</item> 
</style>
<style name="Widget.ProgressBar"> 
    <item name="android:indeterminateOnly">true</item> 
    <item name="android:indeterminateDrawable">@android:drawable/progress_medium_white</item> 
    <item name="android:indeterminateBehavior">repeat</item> 
    <item name="android:indeterminateDuration">3500</item> 
    <item name="android:minWidth">48dip</item> 
    <item name="android:maxWidth">48dip</item> 
    <item name="android:minHeight">48dip</item> 
    <item name="android:maxHeight">48dip</item> 
</style>

這是默認(rèn)轉(zhuǎn)圈的效果style，但今天我們修改的是水平進度條顏色！
所以找到

<style name="Widget.ProgressBar.Horizontal"> 
    <item name="android:indeterminateOnly">false</item> 
    <item name="android:progressDrawable">@android:drawable/progress_horizontal</item> 
    <item name="android:indeterminateDrawable">@android:drawable/progress_indeterminate_horizontal</item> 
    <item name="android:minHeight">20dip</item> 
    <item name="android:maxHeight">20dip</item> 
</style>
<style name="Widget.ProgressBar.Horizontal"> 
    <item name="android:indeterminateOnly">false</item> 
    <item name="android:progressDrawable">@android:drawable/progress_horizontal</item> 
    <item name="android:indeterminateDrawable">@android:drawable/progress_indeterminate_horizontal</item> 
    <item name="android:minHeight">20dip</item> 
    <item name="android:maxHeight">20dip</item> 
</style>

你看系統(tǒng)一步一步關(guān)聯(lián)的，擴展性很性，低耦合，所以我們現(xiàn)在只要改變進度條是怎么樣畫出來的就行了 ，但是負(fù)責(zé)畫進度條的是
<item name="android:progressDrawable">  所以我們可以找到"drawable下的 progress_horizontal 文件，改變他就可以改變進度條顏色

<?xml version="1.0" encoding="utf-8"?> 
<!-- Copyright (C) 2008 The Android Open Source Project 
   Licensed under the Apache License, Version 2.0 (the "License"); 
   you may not use this file except in compliance with the License. 
   You may obtain a copy of the License at 
     http://www.apache.org/licenses/LICENSE-2.0 
   Unless required by applicable law or agreed to in writing, software 
   distributed under the License is distributed on an "AS IS" BASIS, 
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
   See the License for the specific language governing permissions and 
   limitations under the License. 
--> 
<layer-list xmlns:android="http://schemas.android.com/apk/res/android"> 
  <item android:id="@android:id/background"> 
    <shape> 
      <corners android:radius="5dip" /> 
      <gradient 
          android:startColor="#ff9d9e9d" 
          android:centerColor="#ff5a5d5a" 
          android:centerY="0.75" 
          android:endColor="#ff747674" 
          android:angle="270" 
      /> 
    </shape> 
  </item> 
  <item android:id="@android:id/secondaryProgress"> 
    <clip> 
      <shape> 
        <corners android:radius="5dip" /> 
        <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="5dip" /> 
        <gradient 
            android:startColor="#ffffd300" 
            android:centerColor="#ffffb600" 
            android:centerY="0.75" 
            android:endColor="#ffffcb00" 
            android:angle="270" 
        /> 
      </shape> 
    </clip> 
  </item> 
</layer-list> 

<?xml version="1.0" encoding="utf-8"?> 
<!-- Copyright (C) 2008 The Android Open Source Project 
   Licensed under the Apache License, Version 2.0 (the "License"); 
   you may not use this file except in compliance with the License. 
   You may obtain a copy of the License at 
     http://www.apache.org/licenses/LICENSE-2.0 
   Unless required by applicable law or agreed to in writing, software 
   distributed under the License is distributed on an "AS IS" BASIS, 
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
   See the License for the specific language governing permissions and 
   limitations under the License. 
--> 
<layer-list xmlns:android="http://schemas.android.com/apk/res/android"> 
  <item android:id="@android:id/background"> 
    <shape> 
      <corners android:radius="5dip" /> 
      <gradient 
          android:startColor="#ff9d9e9d" 
          android:centerColor="#ff5a5d5a" 
          android:centerY="0.75" 
          android:endColor="#ff747674" 
          android:angle="270" 
      /> 
    </shape> 
  </item> 
  <item android:id="@android:id/secondaryProgress"> 
    <clip> 
      <shape> 
        <corners android:radius="5dip" /> 
        <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="5dip" /> 
        <gradient 
            android:startColor="#ffffd300" 
            android:centerColor="#ffffb600" 
            android:centerY="0.75" 
            android:endColor="#ffffcb00" 
            android:angle="270" 
        /> 
      </shape> 
    </clip> 
  </item> 
</layer-list>

看到?jīng)]有，這是系統(tǒng)的進度條畫出的布局條件

android:startColor="#80ffd300"
android:centerColor="#80ffb600"
android:endColor="#ff747674"

我們只要改變這個色值就能改變他的顏色，主要改變的是<item android:id="@android:id/progress">下的色值就行了
說了這么多，到底怎么做呢， 很簡單

1. 在我們的項目下新建一個 style.xml 文件

創(chuàng)建一個style 標(biāo)簽，集成系統(tǒng)默認(rèn)樣式，然后自定義一個新的progressDrawable  文件，隨后面在layout 中的progress 中引用這個文件就行

<style name="ProgressBar_Mini" parent="@android:style/Widget.ProgressBar.Horizontal">
    <item name="android:maxHeight">50dip</item>
    <item name="android:minHeight">8dip</item>
    <item name="android:indeterminateOnly">false</item>
    <item name="android:indeterminateDrawable">@android:drawable/progress_indeterminate_horizontal</item>
    <item name="android:progressDrawable">@drawable/progressbar_mini</item>
</style>

下面是我的  progressbar_mini  文件，改變了下android:endColor="#F5F5F5" android:startColor="#BEBEBE"  的色值

<layer-list xmlns:android="http://schemas.android.com/apk/res/android" > 
  <item android:id="@android:id/background"> 
     <shape > 
        <corners android:radius="5dip" /> 
        <gradient 
          android:angle="270" 
          android:centerY="0.75" 
          android:endColor="#F5F5F5" 
          android:startColor="#BEBEBE" /> 
      </shape> 
  </item> 
  <item android:id="@android:id/secondaryProgress"> 
    <clip > 
      <shape > 
        <corners android:radius="0dip" /> 
        <gradient 
          android:angle="270" 
          android:centerY="0.75" 
          android:endColor="#165CBC" 
          android:startColor="#85B0E9" /> 
      </shape> 
    </clip> 
  </item> 
  <item android:id="@android:id/progress"> 
    <clip > 
      <shape > 
        <corners android:radius="5dip" /> 
        <gradient 
          android:angle="270" 
          android:centerY="0.75" 
          android:endColor="#165CBC" 
          android:startColor="#85B0E9" /> 
      </shape> 
    </clip> 
  </item> 
</layer-list>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" > 
  <item android:id="@android:id/background"> 
     <shape > 
        <corners android:radius="5dip" /> 
        <gradient 
          android:angle="270" 
          android:centerY="0.75" 
          android:endColor="#F5F5F5" 
          android:startColor="#BEBEBE" /> 
      </shape> 
  </item> 
  <item android:id="@android:id/secondaryProgress"> 
    <clip > 
      <shape > 
        <corners android:radius="0dip" /> 
        <gradient 
          android:angle="270" 
          android:centerY="0.75" 
          android:endColor="#165CBC" 
          android:startColor="#85B0E9" /> 
      </shape> 
    </clip> 
  </item> 
  <item android:id="@android:id/progress"> 
    <clip > 
      <shape > 
        <corners android:radius="5dip" /> 
        <gradient 
          android:angle="270" 
          android:centerY="0.75" 
          android:endColor="#165CBC" 
          android:startColor="#85B0E9" /> 
      </shape> 
    </clip> 
  </item> 
</layer-list>

最后在中引用就可以了

<ProgressBar
    android:id="@+id/progress"
    style="@style/ProgressBar_Mini"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:progress="50" />

希望本文所述對大家Android程序設(shè)計有所幫助。

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