[移动开发]SeekBar 设置圆角和滑块并且滑块高度和seebar高度一样

首先看下效果

1，android:splitTrack="false" 滑块背景透明

2，android:thumbOffset="0dp" 不让滑块超出 seebar宽度

3，progressDrawable 资源

<?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>
            <solid android:color="@android:color/white"/>
            <corners android:radius="@dimen/volume_slider_height"/>
        </shape>
    </item>
    <item android:id="@android:id/progress">
        <clip>
            <shape>
                <solid android:color="@android:color/transparent"/>
            </shape>
        </clip>
    </item>
    <!--二级进度-->
    <item android:id="@android:id/secondaryProgress">
        <clip>
            <shape>
                <corners android:radius="50dp"/>
                <gradient
                android:endColor="#0066ff"
                android:centerColor="#0099ff"
                android:startColor="#00ffff"
           />
            </shape>
        </clip>
    </item>
</layer-list>

4，布局文件

<SeekBar
    android:id="@+id/volume_row_slider"
    android:layout_width="@dimen/slider_width"
    android:layout_height="@dimen/slider_height"
    android:layout_gravity="center_vertical"
    android:splitTrack="false"
    android:minHeight="@dimen/slider_height"
    android:progress="0"
    android:maxHeight="@dimen/slider_height"
    android:paddingLeft="0dp"
    android:paddingRight="0dp"
    android:thumbOffset="0dp"
    android:thumb="@drawable/ctouch_seekbar_thumb"
    android:progressDrawable="@drawable/volume_row_seekbar"
    />

android:maxHeight 为了使得seebar高度充满 设置的宽高

5，动态设置二级进度使进度和滑块位置匹配

float width=getResources().getDimension(R.dimen.slider_width);
float height=getResources().getDimension(R.dimen.slider_height);
int oneProgressDp=(int) (width/100);
mSliderR =height/2*1.0f/oneProgressDp;
mSecondProgress= (int) (100-mSliderR*2);
seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
    @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean b) {
        seekBar.setSecondaryProgress((int) (mSliderR+mSecondProgress*1.0/100*progress));
    }

    @Override public void onStartTrackingTouch(SeekBar seekBar) {

    }

    @Override public void onStopTrackingTouch(SeekBar seekBar) {

    }
});