public void measure(int widthSpec, int heightSpec) {
if (widthSpec == mLastWidthSpec
&& heightSpec == mLastHeightSpec
&& (mViewFlags & FLAG_LAYOUT_REQUESTED) == 0) {
return;
}
mLastWidthSpec = widthSpec;
mLastHeightSpec = heightSpec;
mViewFlags &= ~FLAG_SET_MEASURED_SIZE;
onMeasure(widthSpec, heightSpec);
if ((mViewFlags & FLAG_SET_MEASURED_SIZE) == 0) {
throw new IllegalStateException(
getClass().getName() + " should call setMeasuredSize() in onMeasure()");
}
}
