Parcel write/read doesn't work in AndroidTestCase -why?

问题

I am trying to test to write to a Parcel in Android test but it doesnt't work. s==null! What is wrong?

public class scraptest extends AndroidTestCase {

    public void test() {

        Parcel parcel=Parcel.obtain();
        parcel.writeString("sdfsdf");
        String s=parcel.readString();

    }
}

回答1:

One must reset the Parcel's data position with: parcel.setDataPosition(0);

来源：https://stackoverflow.com/questions/22832403/parcel-write-read-doesnt-work-in-androidtestcase-why