如何在android中的seekbar中绘制可绘制的进度

Question

如果我SeekBar在所有进度线中设置绘制"进度可绘制" 我得到bgdraw.如何从开始到拇指位置设置绘图？

Answer 1

你可以用这种方式:

在drawable文件夹中创建自定义文件....

<?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>
        <gradient 
                android:startColor="#00000000"
                android:centerColor="#00000000"
                android:centerX="1"
                android:endColor="#00000000"
                android:angle="0"
        />
    </shape>
</item>
<item android:id="@android:id/secondaryProgress" >
    <clip android:clipOrientation="horizontal" android:gravity="left" >
        <shape>
            <gradient
                    android:startColor="@color/blue"
                    android:centerColor="@color/blue"
                    android:centerX="0.75"
                    android:endColor="@color/blue"
                    android:angle="0"
            />
        </shape>
    </clip>
</item>

<item android:id="@android:id/progress" >
    <clip android:clipOrientation="horizontal" android:gravity="left" >
        <shape>
            <gradient
                    android:startColor="@color/blue"
                    android:centerColor="@color/blue"
                    android:centerX="0.75"
                    android:endColor="@color/blue"
                    android:angle="0"
            />
        </shape>
    </clip>
</item>

然后在xml文件中设置此自定义文件:

  <SeekBar
            android:id="@+id/skProgress"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp"
            android:layout_marginTop="10dp"
            android:background="@android:color/white"
            android:gravity="center|center_vertical"
            android:progressDrawable="@drawable/progress_Ever" // here whatever name your custom file in drawable...set to here
  />