Android Drawable转BitmapDrawable再提取Bitmap，Kotlin

XML 复制代码

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <ImageView
        android:id="@+id/img1"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:scaleType="centerInside" />

    <ImageView
        android:id="@+id/img2"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:scaleType="centerInside" />

</LinearLayout>

Kotlin 复制代码

        setContentView(R.layout.two_image)

        val img1 = findViewById<ImageView>(R.id.img1)
        img1.setImageResource(android.R.drawable.ic_dialog_alert)
        val drawable = img1.drawable
        val bitmapDrawable = drawable as? BitmapDrawable
        val bmp = bitmapDrawable?.bitmap

        val img2 = findViewById<ImageView>(R.id.img2)
        img2.setImageBitmap(bmp)

Android Drawable 转化成 Bitmap_zhangphil的博客-CSDN博客/*Java代码将Drawable转化为Bitmap */ Bitmap drawableToBitmap(Drawable drawable) { int width = drawable.getIntrinsicWidth(); int height = drawable.getIntrinsicHeight(); Bitmap bitmaphttps://blog.csdn.net/zhangphil/article/details/43767535 Android传递Bitmap的两种简单方式及其缺陷_android上传bitmap_zhangphil的博客-CSDN博客Android传递Bitmap的几种简单方式一，通过Intent的Bundle。比如有两个activity，A，B，从A进入B。先在A中将Bitmap写进去：Resources res=getResources();Bitmap bmp=BitmapFactory.decodeResource(res, R.drawable.ic_launcher);Bundle b_android上传bitmaphttps://blog.csdn.net/zhangphil/article/details/51655973