measure()抛出该错误的
Null Pointer Exception原因是，当您为布局充气时，它不会读取布局的高度，宽度，属性。
只需在调用前
view.measure()根据您使用的布局类型添加此行
v.measure（MeasureSpec.makeMeasureSpec（0，MeasureSpec.UNSPECIFIED），MeasureSpec.makeMeasureSpec（0，MeasureSpec.UNSPECIFIED））;
public Bitmap getBitmapFromView(RelativeLayout v) { v.setLayoutParams(new LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT)); v.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED)); v.layout(0, 0, v.getMeasuredWidth(), v.getMeasuredHeight()); Bitmap b = Bitmap.createBitmap(v.getMeasuredWidth(), v.getMeasuredHeight(), Bitmap.Config.ARGB_8888); Canvas c = new Canvas(b); v.draw(c); return b; }
