当我们点击recyclerview项目时，我试图将recyclerview项目中的值传递给另一个活动。在这里，我使用OnItemTouchListener。
我从JSON检索数据并将其解析为ArrayList。我保存了5个参数。 Title，ID，Rating，ReleaseDate，urlPoster，但是现在我只显示来自urlposter的2个参数，标题和图像。
我想将其他参数传递给另一个活动，但我无法找到如何做到这一点。
还有另外一个类似这样的问题（Values from RecyclerView item to other Activity），但他使用OnClick，而不是OnItemTouch，他在ViewHolder中这样做。我在互联网上的某处读到，这不是正确的事情。
这是我的代码
public class Tab1 extends Fragment {
private static final String ARG_PAGE = "arg_page";
private static final String STATE_MOVIES = "state movies";
private TextView txtResponse;
private String passID;
// Progress dialog
private ProgressDialog pDialog;
//private String urlJsonArry = "http://api.androidhive.info/volley/person_array.json";
private String urlJsonArry = "http://api.themoviedb.org/3/movie/popular?api_key=someapikeyhere";
private String urlJsonImg = "http://image.tmdb.org/t/p/w342";
// temporary string to show the parsed response
private String jsonResponse = "";
RecyclerView mRecyclerView;
RecyclerView.LayoutManager mLayoutManager;
RecyclerView.Adapter mAdapter;
private ArrayList<Movies> movies = new ArrayList<Movies>();
public Tab1() {
// Required empty public constructor
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putParcelableArrayList(STATE_MOVIES, movies);
}
public static Tab1 newInstance(int pageNumber){
Tab1 myFragment = new Tab1();
Bundle arguments = new Bundle();
arguments.putInt(ARG_PAGE, pageNumber);
myFragment.setArguments(arguments);
return myFragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
pDialog = new ProgressDialog(getActivity());
pDialog.setMessage("Please wait...");
pDialog.setCancelable(false);
}
/**
* Method to make json object request where json response starts wtih {
* */
private void makeJsonObjectRequest() {
showpDialog();
final JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(urlJsonArry, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
//Log.d(TAG, response.toString());
try {
JSONArray result = response.getJSONArray("results");
//Iterate the jsonArray and print the info of JSONObjects
for(int i=0; i < result.length(); i++){
JSONObject jsonObject = result.getJSONObject(i);
String id = jsonObject.getString("id");
String originalTitle = jsonObject.getString("original_title");
String releaseDate = jsonObject.getString("release_date");
String rating = jsonObject.getString("vote_average");
String urlThumbnail = urlJsonImg + jsonObject.getString("poster_path");
//jsonResponse = "";
jsonResponse += "ID: " + id + "\n\n";
jsonResponse += "Title: " + originalTitle + "\n\n";
jsonResponse += "Release Date: " + releaseDate + "\n\n";
jsonResponse += "Rating: " + rating + "\n\n";
}
//Toast.makeText(getActivity(),"Response = "+jsonResponse,Toast.LENGTH_LONG).show();
parseResult(response);
}catch (JSONException e) {
e.printStackTrace();
Toast.makeText(getActivity(),"Error: " + e.getMessage(),
Toast.LENGTH_LONG).show();
}
hidepDialog();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
//VolleyLog.d(TAG, "Error: " + error.getMessage());
Toast.makeText(getActivity(),
error.getMessage(), Toast.LENGTH_SHORT).show();
// hide the progress dialog
hidepDialog();
}
});
// Adding request to request queue
VolleySingleton.getInstance(getActivity()).addToRequestQueue(jsonObjectRequest);
}
private void showpDialog() {
if (!pDialog.isShowing())
pDialog.show();
}
private void hidepDialog() {
if (pDialog.isShowing())
pDialog.dismiss();
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
//txtResponse = (TextView) getActivity().findViewById(R.id.txtResponse);
//makeJsonArrayRequest();
// Calling the RecyclerView
mRecyclerView = (RecyclerView) getActivity().findViewById(R.id.recycler_view_movie);
mRecyclerView.setHasFixedSize(true);
// The number of Columns
mLayoutManager = new GridLayoutManager(getActivity(),2);
mRecyclerView.setLayoutManager(mLayoutManager);
mAdapter = new MovieAdapter(getActivity(),movies);
mRecyclerView.setAdapter(mAdapter);
mRecyclerView.addOnItemTouchListener(new RecyclerTouchListener(getActivity(), mRecyclerView, new ClickListener() {
@Override
public void onMovieClick(View view, int position) {
Toast.makeText(getActivity(), "Kepencet " + position, Toast.LENGTH_SHORT).show();
**//what to do here?**
}
@Override
public void onMovieLongClick(View view, int position) {
Toast.makeText(getActivity(),"Kepencet Lama "+position,Toast.LENGTH_LONG).show();
}
}));
makeJsonObjectRequest();
if (savedInstanceState!=null){
movies=savedInstanceState.getParcelableArrayList(STATE_MOVIES);
mAdapter.notifyDataSetChanged();
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.tab_1, container, false);
return view;
}
private void parseResult(JSONObject response) {
try {
JSONArray arrayMovies = response.getJSONArray("results");
if (movies == null) {
movies = new ArrayList<Movies>();
}
for (int i = 0; i < arrayMovies.length(); i++) {
JSONObject currentMovies = arrayMovies.getJSONObject(i);
Movies item = new Movies();
item.setTitle(currentMovies.optString("original_title"));
item.setRating(currentMovies.optString("vote_average"));
item.setReleaseDate(currentMovies.optString("release_date"));
item.setId(currentMovies.optString("id"));
item.setUrlThumbnail(urlJsonImg+currentMovies.optString("poster_path"));
movies.add(item);
mAdapter.notifyDataSetChanged();
//Toast.makeText(getActivity(),"Movie : "+movies,Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
class RecyclerTouchListener implements RecyclerView.OnItemTouchListener{
private GestureDetector mGestureDetector;
private ClickListener mClickListener;
public RecyclerTouchListener(final Context context, final RecyclerView recyclerView, final ClickListener clickListener) {
this.mClickListener = clickListener;
mGestureDetector = new GestureDetector(context,new GestureDetector.SimpleOnGestureListener(){
@Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
@Override
public void onLongPress(MotionEvent e) {
View child = recyclerView.findChildViewUnder(e.getX(),e.getY());
if (child!=null && clickListener!=null){
clickListener.onMovieLongClick(child,recyclerView.getChildAdapterPosition(child));
}
super.onLongPress(e);
}
});
}
@Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
View child = rv.findChildViewUnder(e.getX(), e.getY());
if (child!=null && mClickListener!=null && mGestureDetector.onTouchEvent(e)){
mClickListener.onMovieClick(child,rv.getChildAdapterPosition(child));
}
return false;
}
@Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
@Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
}
public static interface ClickListener{
public void onMovieClick(View view, int position);
public void onMovieLongClick(View view, int position);
}
}
任何帮助将不胜感激。谢谢！
答案 0 :(得分：4)
您需要将其他两个值添加到intent中的包中。所以像这样：
Intent intent = new Intent(getActivity(), YourNextActivity.class);
intent.putExtra("movie_id_key", movies.get(position).getId); //you can name the keys whatever you like
intent.putExtra("movie_rating_key", movies.get(position).getRating); //note that all these values have to be primitive (i.e boolean, int, double, String, etc.)
intent.putExtra("movie_release_date_key", movies.get(position).getReleaseDate);
startActivity(intent)
在您的新活动中，只需执行此操作即可检索：
String id = getIntent().getExtras().getString("movie_id_key");
答案 1 :(得分：0)
在启动活动的意图中将它们添加为额外内容：
Intent intent = new Intent(currentActivity, targetActivity);
// Sree was right in his answer, it's putExtra, not putStringExtra. =(
intent.putExtra("title", title);
// repeat for ID, Rating, ReleaseDate, urlPoster
startActivity(intent);
然后用
在其他活动的onCreate中将它们拉出来Intent startingIntent = getIntent();
String title = startingIntent.getStringExtra("title"); // or whatever.
回应以下评论： 我不是100％肯定你是如何实现它的，但看起来你有onclick处理程序传递位置和视图引用，对吧？根据需要调整它，但基本上......：
public void onClick(View v, int position){
Movie m = movies.get(position);
Intent intent = new Intent(v.getContext(), AnotherActivity.class);
intent.putExtra("my_movie_foo_key", m.getFoo());
intent.putExtra("my_movie_bar_key", m.getBar());
// etc.
v.getContext().startActivity(intent);
}
只要你有一个有效的上下文引用（并且他们无法点击没有有效上下文的视图），你就可以从任何你喜欢的地方开始一个活动。