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  • Android之SeekBar定制

    1、SeekBar样式定制
    xml文件中:
     <SeekBar
                android:id="@+id/seekbar_voice"
                android:layout_width="wrap_content"
                android:layout_height="200dp"
                android:maxHeight="5dp"
                android:minHeight="5dp"
                android:progressDrawable="@drawable/seekbar_voice_style"
                android:thumb="@drawable/voice_thumb" >
            </SeekBar>
    其中,seekbar_voice_style.xml设定进度条的进度和背景样式:
    1)用图片:
        <?xml version="1.0" encoding="utf-8"?>

    <layer-list xmlns:android="http://schemas.android.com/apk/res/android" >

     

        <!-- 背景图 -->

     

        <item

     

            android:id="@+android:id/background"

     

            android:drawable="@drawable/bg_voice"/>

     

        <!-- 全部能量图 -->

     

        <item

     

            android:id="@+android:id/secondaryProgress"

     

            android:drawable="@drawable/bg_voice"/>

     

        <!-- 进和能量图 -->

     

        <item

     

            android:id="@+android:id/progress"

     

            android:drawable="@drawable/bg_progress"/>

     

    </layer-list>

    2)用颜色:
    <?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="5dip" />
                <gradient
                    android:angle="270"
                    android:centerColor="#ff5a5d5a"
                    android:centerY="0.75"
                    android:endColor="#ff747674"
                    android:startColor="#ff9d9e9d" />
            </shape>
        </item>
        <item android:id="@android:id/secondaryProgress">
            <clip>
                <shape>
                    <corners android:radius="5dip" />
                    <gradient
                        android:angle="270"
                        android:centerColor="#80ffb600"
                        android:centerY="0.75"
                        android:endColor="#a0ffcb00"
                        android:startColor="#80ffd300" />
                </shape>
            </clip>
        </item>
        <item android:id="@android:id/progress">
            <clip>
                <shape>
                    <corners android:radius="5dip" />
                    <gradient
                        android:angle="270"
                        android:centerColor="#ffffb600"
                        android:centerY="0.75"
                        android:endColor="#ffffcb00"
                        android:startColor="#ffffd300" />
                </shape>
            </clip>
        </item>
    </layer-list>
     
     
    其中,voice_thumb.xml设定滑块的样式:
    1. <?xml version="1.0" encoding="utf-8"?>  
    2. <selector xmlns:android="http://schemas.android.com/apk/res/android">         
    3.     <!-- 按下状态 -->      
    4.     <item         
    5.         android:state_pressed="true"         
    6.         android:drawable="@drawable/seekbar_block" />        
    7.                   
    8.     <!-- 普通无焦点状态 -->      
    9.     <item         
    10.         android:state_focused="false"         
    11.         android:state_pressed="false"       
    12.         android:drawable="@drawable/seekbar_block" />     
    13.     
    14. </selector>   
     
    2、seekbar高度设置:
    seekbar如果没有限定高度,可能会显得很臃肿,这时候需要用到
        android:maxHeight="5dp"
        android:minHeight="5dp"
    两个属性。
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  • 原文地址:https://www.cnblogs.com/shenchanghui/p/4867530.html
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