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我遵循材料設計。那麼我可以在CardView的onClick()方法中將Fragment替換爲Fragment，並將一些數據從RecyclerView.Adapter傳遞到另一個Fragment？如何替換cardview的onClick（）上的片段？
這裏是我的代碼：
fragment_states.xml：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:id="@+id/state"
tools:context="nmittal.indiatour.States">
<!--<include android:id="@+id/toolbar"-->
<!--layout="@layout/toolbar"/>-->
<android.support.v7.widget.RecyclerView
android:id="@+id/recyclerView"
android:divider="#ffffff"
android:orientation= "vertical"
android:dividerHeight="1px"
android:layout_weight="1"
android:gravity= "center_horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<!--android:scrollbars="vertical"-->
</RelativeLayout>
States.java：
public class States extends Fragment{
private LinearLayoutManager linearLayoutManager;
RecyclerView recyclerView;
StateRecyclerViewAdapter stateRecyclerViewAdapter;
List<StateName> stateNameList;
String url1;
JSONObject jsonObject;
JSONArray cityArray;
public static String Key;
class GetFixture extends AsyncTask<Void, Void, Void>{
private GetFixture(){
}
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected Void doInBackground(Void... params) {
String json = new AuthJSON().makeServiceCall(States.this.url1, 2);
if (json!=null){
try {
States.this.jsonObject = new JSONObject(json);
Log.d("jsonObject", "new json Object");
States.this.cityArray = States.this.jsonObject.getJSONArray("Credentials");
Log.d("json Array", "User point array");
Log.d("Array Length", String.valueOf(States.this.cityArray.length()));
Log.d("len", "getarray length");
for (int i=0; i<States.this.cityArray.length(); i++){
States.Key = States.this.cityArray.getJSONObject(i).getString("AuthKey");
}
} catch (JSONException e) {
e.printStackTrace();
}
}
else {
Log.e("JSON Data", "Didn't receive any data from server!");
}
return null;
}
@Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
}
}
public States() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_states, container, false);
recyclerView = (RecyclerView) view.findViewById(R.id.recyclerView);
recyclerView.setHasFixedSize(true);
linearLayoutManager = new LinearLayoutManager(getActivity());
recyclerView.setLayoutManager(linearLayoutManager);
stateRecyclerViewAdapter = new StateRecyclerViewAdapter(getDataSet());
recyclerView.setAdapter(stateRecyclerViewAdapter);
return view;
}
public List<StateName> getDataSet() {
stateNameList = new ArrayList();
stateNameList.add(new StateName("WestBengal"));
stateNameList.add(new StateName("Gujarat"));
stateNameList.add(new StateName("Delhi"));
stateNameList.add(new StateName("Kerala"));
return stateNameList;
}
}
card_view.xml：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.CardView
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="80dp"
android:id="@+id/cardView"
android:layout_marginLeft="-3dp"
android:layout_marginRight="0dp"
android:gravity="center_horizontal"
android:focusable="true"
android:clickable="true"
android:foreground="?android:attr/selectableItemBackground"
card_view:cardElevation="4dp"
card_view:cardUseCompatPadding="true"
card_view:cardCornerRadius="2dp">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="8dp"
android:textStyle="bold"
android:textAlignment="center"
android:textAppearance="?android:attr/textAppearanceMedium"
android:layout_gravity="center_horizontal"
android:gravity="fill"
android:text= ""
android:textColor="#ffffff"
android:layout_centerHorizontal= "true"
android:id="@+id/text" />
</android.support.v7.widget.CardView>
</RelativeLayout>
StateRecyclerViewAdapter.java：
public class StateRecyclerViewAdapter extends RecyclerView.Adapter<StateRecyclerViewAdapter.PlaceViewHolder>{
static int i;
private List<StateName> stateNameList;
String string;
public StateRecyclerViewAdapter(List<StateName> list){
i=1;
stateNameList = list;
}
public PlaceViewHolder onCreateViewHolder(ViewGroup viewGroup, int i){
View itemView = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.card_view, viewGroup, false);
PlaceViewHolder placeViewHolder = new PlaceViewHolder(itemView);
placeViewHolder.cardView.setOnClickListener(new StateRecyclerViewAdapter1(placeViewHolder, viewGroup));
return placeViewHolder;
}
public void onBindViewHolder(PlaceViewHolder placeViewHolder, int i) {
StateName stateName = stateNameList.get(i);
placeViewHolder.stateName.setText(stateName.getName());
placeViewHolder.cardView.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View view){
//Here goes your desired onClick behaviour. Like:
Toast.makeText(view.getContext(), "You have clicked " + view.getId(), Toast.LENGTH_SHORT).show(); //you can add data to the tag of your cardview in onBind... and retrieve it here with with.getTag().toString()..
//You can change the fragment, something like this, not tested, please correct for your desired output:
Activity activity = view.getContext();
Fragment CityName = new CityName();
//Create a bundle to pass data, add data, set the bundle to your fragment and:
activity.getFragmentManager().beginTransaction().replace(R.id.fragment_container, cityName).addToBackStack(null).commit(); //Here m getting error
}
});
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public int getItemCount() {
return stateNameList.size();
}
@Override
public int getItemViewType(int position) {
return 0;
}
public static class PlaceViewHolder extends RecyclerView.ViewHolder {
protected TextView stateName;
protected CardView cardView;
public PlaceViewHolder(View view) {
super(view);
stateName = (TextView) view.findViewById(R.id.text);
cardView = (CardView) view.findViewById(R.id.cardView);
switch (StateRecyclerViewAdapter.i) {
case CompletionEvent.STATUS_FAILURE:
cardView.setCardBackgroundColor(Color.parseColor("#DDEC407A"));
i++;
case CompletionEvent.STATUS_CONFLICT:
cardView.setCardBackgroundColor(Color.parseColor("#DD7986CB"));
i++;
case CompletionEvent.STATUS_CANCELED:
cardView.setCardBackgroundColor(Color.parseColor("#DD5E35B1"));
i++;
default:
cardView.setCardBackgroundColor(Color.parseColor("#DDFF6F00"));
StateRecyclerViewAdapter.i = 1;
}
}
}
}
的AndroidManifest.xml：
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:screenOrientation="portrait"
android:configChanges="keyboardHidden|orientation"
android:theme="@style/AppTheme.NoActionBar">
</activity>
我應該怎麼做，以取代Fragments。我在stateRecyclerview課上評論過它應該被替換的地方。 Thx提前！
你想有相同'onClick'行動的所有'CardView's執行？ – yennsarah
@Amy是啊！ sam onClick查看所有CardView。例如。 OnClick指出，它應該禁止旅遊目的地的清單可見。 –
但是您確實需要取決於哪個'CardView'被點擊的數據，對吧？ – yennsarah