我有一个可以绘制为PDF的9补丁。当我尝试使用BitmapFactory.decode
从中获取位图时,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>
,代码是:
BitmapFactory.decodeResource(mResources, resId);
答案 0 :(得分:6)
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。
答案 1 :(得分:1)
您需要在此处使用NinePatchDrawable
API -
NinePatchDrawable npDrawable = (NinePatchDrawable)getResources().getDrawable(R.drawable.empty_icon_video);