Android将Ninepatch资源转换为位图

Question

我有一个9补丁drawable作为XML.当我尝试使用它BitmapFactory.decode来获取位图时,它会返回null.无论如何从这个资源获取位图？

nine_patch.xml:

<?xml version="1.0" encoding="utf-8"?>
<nine-patch xmlns:android="http://schemas.android.com/apk/res/android"
    android:src="@drawable/empty_icon_video" >

</nine-patch>

而代码是:

BitmapFactory.decodeResource(mResources, resId);

Answer 1

Bitmap bmp = Bitmap.createBitmap(yourWidth, yourHeight, Bitmap.Config.ARGB_8888);
Drawable drawable = getResources().getDrawable(R.drawable.resId);
Canvas canvas = new Canvas(bmp);
drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
drawable.draw(canvas);

试试这个.现在,位图将在其上绘制九个补丁.您可以提供不同的宽度和高度.