Android drawable layer-list右上角红点，xml布局实现，Kotlin

蔚落 2024-02-17 12:05 15阅读 0赞

### Android drawable layer-list右上角红点，xml布局实现，Kotlin ###

###  ###

<?xml version="1.0" encoding="utf-8"?>
    <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
        <item
            android:id="@+id/pic"
            android:drawable="@mipmap/ic_launcher"></item>
        <item
            android:id="@+id/circle"
            android:width="15dp"
            android:height="15dp"
            android:gravity="right|top">
            <shape android:shape="oval">
                <solid android:color="@android:color/holo_red_light" />
    
                <stroke
                    android:width="5px"
                    android:color="@android:color/holo_blue_dark" />
            </shape>
        </item>
    </layer-list>

![e6538e2625a84a6da042f501ca0a78dd.png][]

点击图片，小红点消失：

val iv = findViewById<ImageView>(R.id.iv)
            iv.setOnClickListener { v ->
                ((v as ImageView).drawable as LayerDrawable).findDrawableByLayerId(
                    R.id.circle
                ).alpha = 0
            }

[Android layer-list：联合shape（2）-CSDN博客文章浏览阅读1.2k次。Android layer-list：联合shape（2）附录文章3简单说明了Android layer-list的用法，现在把Android layer-list联合shape做出一些特殊的应用，和附录文章3类似，先写布局文件：![favicon32.ico][]https://blog.csdn.net/zhangphil/article/details/51721283][Android layer-list_shape_2_-CSDN_1.2k_Android layer-list_shape_2_3_Android layer-list_Android layer-list_shape_3_favicon32.ico_https_blog.csdn.net_zhangphil_article_details_51721283][Android layer-list（3）-CSDN博客文章浏览阅读1.7k次。Android layer-list（3）在附录文章3、4的基础上，就Android layer-list再写一个较为复杂的应用。先写布局文件，该布局涉及到LinearLayoutCompat，关于LinearLayoutCompat参看附录文章5。布局文件activity\_main.xml：![favicon32.ico][]https://blog.csdn.net/zhangphil/article/details/51721816][Android layer-list_3_-CSDN_1.7k_Android layer-list_3_3_4_Android layer-list_LinearLayoutCompat_LinearLayoutCompat_5_activity_main.xml_favicon32.ico_https_blog.csdn.net_zhangphil_article_details_51721816]

[e6538e2625a84a6da042f501ca0a78dd.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/02/06/177c1d331ad240d29cc594fa6999b494.png
[favicon32.ico]: https://image.dandelioncloud.cn/pgy_files/images/2024/02/06/b69b32c5881944e59a33f04748955a95.png
[Android layer-list_shape_2_-CSDN_1.2k_Android layer-list_shape_2_3_Android layer-list_Android layer-list_shape_3_favicon32.ico_https_blog.csdn.net_zhangphil_article_details_51721283]: https://blog.csdn.net/zhangphil/article/details/51721283
[Android layer-list_3_-CSDN_1.7k_Android layer-list_3_3_4_Android layer-list_LinearLayoutCompat_LinearLayoutCompat_5_activity_main.xml_favicon32.ico_https_blog.csdn.net_zhangphil_article_details_51721816]: https://blog.csdn.net/zhangphil/article/details/51721816