write a hashmap to a parcel , class of key and value can parcelable both concode_field_sep PlaceHolder placeHolder concode_field_sep Map<String,String> readHashMapStringAndString concode_elem_sep void writeHashMapStringAndString concode_elem_sep Map<String,V> readHashMapStringKey concode_elem_sep Map<K,V> readHashMap concode_elem_sep boolean readBoolean concode_elem_sep void writeHashMapStringKey concode_elem_sep void writeBoolean