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我创建了一个新的项目选项卡式视图。我想在我的主屏幕上的三个布局第一家庭第二类第三最喜欢。我有代码的家庭活动这是片段活动的代码是在这里如何将数据从活动传递到片段类？
public class HomeFragment extends android.support.v4.app.Fragment {
public HomeFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_home, container, false);
}
}
和我有另一个活动，这是视频播放列表。我想在我的家庭片段页面中显示播放列表的活动，但我太困惑了，而且对于Android来说，我不知道该怎么做。
视频播放列表的代码在这里。我如何在我的homeFragment类中调用这段代码？我尝试了太多方法，但太困惑了。
代码是在这里，我想在我的家乡节
public ProgressBar nextBar;
List<String> next_title;
List title;
List vid;
List<String> next_vid;
ArrayList<Videos> videos=new ArrayList<Videos>();
Videos video;
ArrayList<Videos> toclear=new ArrayList<Videos>();
List<Videos> fav = new ArrayList<Videos>();
InterstitialAd mInterstitialAd;
ListView listview;
Toolbar toolbar,favourite;
int menu_id;
LinearLayout layout, no_fav;
private HttpHandler parserVideo;
String nextPageToken;
String apiKey = "AIzaSyDD73ZAzcR6bXa1qOv8YZY3fFmNwfTPs48";
String url;
Main_activity_adapter search;
Main_activity_adapter adapter;
String url_home= "https://www.googleapis.com/youtube/v3/playlistItems?part=snippet&maxResults=15&playlistId=PLQGGrzFoybiOks7f2BReNzNwkRw3cN6RB&key="+apiKey+"";
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.video_sec);
nextBar = (ProgressBar) findViewById(R.id.nextProgress);
layout = (LinearLayout) findViewById(R.id.linlaHeaderProgress);
url = url_home;
listview = (ListView) findViewById(R.id.listview);
no_fav = (LinearLayout)findViewById(R.id.no_favourit);
no_fav.setVisibility(View.GONE);
parserVideo = new HttpHandler();
getVideosPlaylist videosplaylist = new getVideosPlaylist();
videosplaylist.execute();
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
listview.setOnScrollListener(this);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
final MenuItem myActionMenuItem = menu.findItem(R.id.action_search);
final SearchView searchView = (SearchView) myActionMenuItem.getActionView();
final String toolbar_name = toolbar.getTitle().toString();
MenuItemCompat.setOnActionExpandListener(myActionMenuItem, new MenuItemCompat.OnActionExpandListener() {
@Override
public boolean onMenuItemActionExpand(MenuItem item) {
return true;
}
@Override
public boolean onMenuItemActionCollapse(MenuItem item) {
updateList();
return true;
}
});
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String query) {
return false;
}
@Override
public boolean onQueryTextChange(String s) {
if (!s.isEmpty()) {
setSearch();
search.getFilter().filter(s);
}
return false;
}
});
return true;
}// end of toolbar control
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
return super.onOptionsItemSelected(item);
}
public void updateList(){
adapter = new Main_activity_adapter(this, videos, false);
listview.setAdapter(adapter);
listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
Videos v = (Videos) adapter.getItemAtPosition(arg2);
Intent n = new Intent(Videos_activity.this, PlayingVideo.class);
n.putExtra("vid", v.getVid().toString());
n.putExtra("title", v.getTitle().toString());
startActivity(n);
}
}
);
}
JSONObject jp_obj;
JSONArray jar_array;
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
String toolbar_check = toolbar.getTitle().toString();
switch(view.getId()){
case R.id.listview:
final int lastItem = firstVisibleItem + visibleItemCount;
if (lastItem == totalItemCount) {
if(toolbar_check!="Favourites") {
OnScrollList onscroll = new OnScrollList();
onscroll.execute();
}
}
}
}
class getVideosPlaylist extends AsyncTask<String, String, String> {
@Override
protected String doInBackground(String... params) {
jp_obj = parserVideo.getJsonFromYoutube(url);
try {
if (jp_obj.has("nextPageToken")) {
nextPageToken = jp_obj.getString("nextPageToken");
}
jar_array = new JSONArray(jp_obj.getString("items"));
if(jp_obj != null) {
JSONObject c = jar_array.getJSONObject(0);
String json_check = c.getJSONObject("snippet").getString("title");
if (json_check == null) {
} else {
title = new ArrayList<String>(jar_array.length());
vid = new ArrayList<>(jar_array.length());
for (int j = 0; j < jar_array.length(); j++) {
c = jar_array.getJSONObject(j);
String str = c.getJSONObject("snippet").getString("title");
str = new String(str.replaceAll("\\['\\]", ""));
String link = c.getJSONObject("snippet").getJSONObject("resourceId").getString("videoId");
video = new Videos(str, link);
videos.add(video);
}
}
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onCancelled(){
super.onCancelled();
}
@Override
protected void onPreExecute() {
layout.setVisibility(View.VISIBLE);
super.onPreExecute();
}
@Override
protected void onPostExecute(String s) {
updateList();
layout.setVisibility(View.GONE);
cancel(true);
super.onPostExecute(s);
}
}
class OnScrollList extends AsyncTask<String,String,String>{
@Override
protected String doInBackground(String... params) {
if (nextPageToken!=null){
String nextPage = "&pageToken="+nextPageToken+"";
JSONObject next = parserVideo.getJsonFromYoutube(url+nextPage);
try {
JSONArray array = new JSONArray(next.getString("items"));
if (next != null) {
JSONObject c = array.getJSONObject(0);
String json_check = c.getJSONObject("snippet").getString("title");
if (json_check == null) {
} else {
next_title = new ArrayList<String>(array.length());
next_vid = new ArrayList<String>((array.length()));
for (int j = 0; j < array.length(); j++) {
c = array.getJSONObject(j);
String str = c.getJSONObject("snippet").getString("title");
str = new String(str.replaceAll("\'", ""));
next_title.add(str);
String nextLink = c.getJSONObject("snippet").getJSONObject("resourceId").getString("videoId");
next_vid.add(nextLink);
video = new Videos(str, nextLink);
toclear.add(video);
}
}
}if (next.has("nextPageToken")){
nextPageToken = next.getString("nextPageToken");
}else if(!next.has("nextPageToken")){
nextPageToken = null;}
} catch (JSONException e) {
e.printStackTrace();
}
}
return null;
}
@Override
protected void onCancelled(){
super.onCancelled();
}
@Override
protected void onPostExecute(String s) {
videos.addAll(toclear);
adapter.notifyDataSetChanged();
nextBar.setVisibility(View.GONE);
toclear.clear();
cancel(true);
super.onPostExecute(s);
}
@Override
protected void onPreExecute() {
nextBar.setVisibility(View.VISIBLE);
super.onPreExecute();
}
}
public void setSearch()
{
search = new Main_activity_adapter(Videos_activity.this, videos, true);
listview.setAdapter(search);
listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
Videos v = (Videos)search.getItemAtPosition(arg2);
Intent n = new Intent(Videos_activity.this, PlayingVideo.class);
n.putExtra("vid", v.getVid().toString());
n.putExtra("title", v.getTitle().toString());
startActivity(n);
}
}
);
}
public void favouritList(){
Main_activity_adapter favourit_adapter = new Main_activity_adapter(this, videos, false);
listview.setAdapter(favourit_adapter);
listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
Videos v = (Videos) adapter.getItemAtPosition(arg2);
Intent n = new Intent(Videos_activity.this, PlayingVideo.class);
n.putExtra("vid", v.getVid().toString());
n.putExtra("title", v.getTitle().toString());
startActivity(n);
}
}
);
}
创建一个方法并直接调用它m活动 –
我如何创建方法请给我一点点主意 –
只是一个公共方法，并通过片段引用直接访问它 –