ProgressBar中的setVisibility
三种取值:
View.VISIBLE
(可见的,默认值)、
View.INVISIBLE
(不可见,仍然占据原来的位置和大小)
View.GONE
(不可见,而且不占任何屏幕)
垂直ProgressBar的实现
res/layout/activity_main.xml
<ProgressBar
android:id="@+id/pb_vertical_simple_shape"
android:layout_width="20dp"
android:layout_height="150dp"
android:layout_margin="20dp"
android:indeterminateOnly="false"
android:max="100"
android:progress="70"
android:progressDrawable="@drawable/progress_vertical" />
res/drawable/progress_vertical.xml
<?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
android:clipOrientation="vertical"
android:gravity="bottom">
<shape>
<corners android:radius="5dip" />
<gradient
android:angle="90"
android:endColor="#a0ffcb00"
android:startColor="#80ffd300" />
</shape>
</clip>
</item>
<item android:id="@android:id/progress">
<!-- 定义ClipDrawable的剪裁方向为垂直 -->
<clip
android:clipOrientation="vertical"
android:gravity="bottom">
<shape>
<corners android:radius="5dip" />
<gradient
android:angle="90"
android:endColor="#ffff4b00"
android:startColor="#ffffd300" />
</shape>
</clip>
</item>
</layer-list>
参考:
https://www.cnblogs.com/yangfengwu/p/7633980.html
https://blog.csdn.net/mengliluohua_151/article/details/51821744
https://blog.csdn.net/hjpdyxhjd/article/details/50365723