小编fly*_*OWX的帖子

我得到以下错误:

• 键com..BookStatus期望Parcelable但值是一个ArrayList
• ClassCastException:ArrayList无法强制转换为Parcelable - > and thefter:无法启动Activity - NullPointerException

• ArrayList有BookStatus对象的值(listToPass)

  • 键com.example.books.BookStatus期望Parcelable但值是java.util.ArrayList.返回了默认值
  • 尝试转换生成的内部异常:
  • java.lang.ClassCastException:java.util.ArrayList无法强制转换为android.os.Parcelable
  • 在com.example.books4locals.SearchActivity.onCreate(SearchActivity.java:46) - >这是bundle.getparcelable方法

我能做什么？

HomeActivity.java

    ArrayList<BookStatus> listToPass = new ArrayList<BookStatus>(); // fill with smthg

        protected void onPostExecute(String result) {

            if (listToPass != null) {

                Intent i = new Intent(getApplicationContext(),
                        SearchActivity.class);
                //              ArrayList<BookStatus> bs = new ArrayList<BookStatus> (Arrays.asList(bArr));

                i.putParcelableArrayListExtra("com.example.books.BookStatus", listToPass);
                startActivity(i);

SearchActivity.java

          protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.searchactivity_main);

            Bundle bundle = getIntent().getExtras();
            ArrayList<BookStatus> bookStatus = bundle
                    .getParcelable("com.example.books.BookStatus");

BookStatus.java

         public class BookStatus implements Parcelable {

        public BookStatus() { …