精美进度条的简易实现·附完整代码

1.activity_main

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <com.example.music.CustomSeekBarItem
        android:id="@+id/custom_seek_bar_item"
        android:layout_width="600dp"
        android:layout_height="80dp"
        android:layout_gravity="left"
        app:is_show_right_text="true"
        app:right_text="88"
        app:right_text_color="#fff" />

</LinearLayout>

2.values/attrs

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <!--设置界面的item属性  左边图标  右边文字-->
    <declare-styleable name="CustomSeekBarItem">
        <attr name="left_icon" selectOne="dimension"/>
        <attr name="is_show_right_text" selectOne="boolean" />
        <attr name="right_text" selectOne="string" />
        <attr name="right_text_color" selectOne="color" />
    </declare-styleable>
</resources>

3.新建layout文件activity_custom_seek_bar_item

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/seekbar_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <!-- 拖动条 -->
    <SeekBar
        android:id="@+id/seek_bar"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:backgr