Jak otworzyć inny fragment w widoku recyklingu OnClick

Question

Używam RecyclerView do wyświetlania pozycji mojej listy kreślonej w moim Navigation Drawer. OnClick pozycji z listy szuflad, jestem w stanie otworzyć różne działania, jednak chciałbym móc otworzyć fragmenty, które zastąpią główny schemat działania.

Czy istnieje sposób, aby to zrobić?

public class AdapterClass extends RecyclerView.Adapter<AdapterClass.MyViewHolder> { 
    private LayoutInflater inflater; 
    private Context context; 
    List<Information> data = Collections.emptyList(); 

    public AdapterClass(Context context, List<Information> data) { 
     this.context = context; 

     inflater = LayoutInflater.from(context); 
     this.data = data; 
    } 

    @Override 
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
     View view = inflater.inflate(R.layout.custom_row, parent, false); 
     MyViewHolder holder = new MyViewHolder(view); 
     return holder; 
    } 

    @Override 
    public void onBindViewHolder(MyViewHolder holder, int position) { 
     Information current = data.get(position); 
     holder.title.setText(current.title); 
     holder.icon.setImageResource(current.iconId); 

    } 

    @Override 
    public int getItemCount() { 
     return data.size(); 
    } 

    class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener { 
     TextView title; 
     ImageView icon; 

     public MyViewHolder(View itemView) { 
      super(itemView); 
      context = itemView.getContext(); 
      title = (TextView) itemView.findViewById(R.id.listText); 
      icon = (ImageView) itemView.findViewById(R.id.listIcon); 
      itemView.setClickable(true); 
      itemView.setOnClickListener(this); 
     } 

     @Override 
     public void onClick(View v) { 

      final Intent intent; 
      switch (getPosition()) { 
       case 0: 
        intent = new Intent(context, next.class); 
        break; 

       case 1: 
        intent = new Intent(context, next.class); 
        break; 

       case 2: 
        intent = new Intent(context, next.class); 
        break; 
       default: 
        intent = new Intent(context, next.class); 
        break; 
      } 
      context.startActivity(intent); 
     } 
    } 
}; 

MainActivity.java

public class MainActivity extends ActionBarActivity { 

    private Toolbar toolbar; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     toolbar = (Toolbar) findViewById(R.id.app_bar); 
     setSupportActionBar(toolbar); 
     getSupportActionBar().setDisplayShowHomeEnabled(true); 
     NavigationDrawerFragment drawerFragment = (NavigationDrawerFragment) 
       getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer); 
     drawerFragment.setUp(R.id.fragment_navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout), toolbar); 
    } 
    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.menu_main, menu); 
     return true; 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle action bar item clicks here. The action bar will 
     // automatically handle clicks on the Home/Up button, so long 
     // as you specify a parent activity in AndroidManifest.xml. 
     int id = item.getItemId(); 

     //noinspection SimplifiableIfStatement 
     if (id == R.id.action_settings) { 
      return true; 
     } 

     return super.onOptionsItemSelected(item); 
    } 
} 

NavigationDrawerFragment.java

public class NavigationDrawerFragment extends Fragment { 
    private ActionBarDrawerToggle mDrawerToggle; 
    private DrawerLayout mDrawerLayout; 
    private boolean mUserLearnedDrawer; 
    private boolean mFromSavedInstanceState; 
    public static final String PREF_FILE_NAME = "testpref"; 
    public static final String KEY_USER_LEARNED_DRAWER = "user_learned_drawer"; 
    private View containerView; 
    private AdapterClass adapter; 
    private RecyclerView recyclerView; 

    public NavigationDrawerFragment() { 
     // Required empty public constructor 
    } 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     mUserLearnedDrawer = Boolean.valueOf(readFromPreferences(getActivity(), KEY_USER_LEARNED_DRAWER, "false")); 
     if (savedInstanceState != null) { 
      mFromSavedInstanceState = true; 
     } 
    } 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 
     View layout = inflater.inflate(R.layout.fragment_navigation_drawer, container, false); 
     recyclerView = (RecyclerView) layout.findViewById(R.id.drawerList); 

     adapter = new AdapterClass(getActivity(), getData()); 
     recyclerView.setAdapter(adapter); 
     recyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); 
     return layout; 
    } 

    public static List<Information> getData() { 
     List<Information> data = new ArrayList<>(); 
     int[] icons = {R.drawable.ic_menu_check, R.drawable.ic_menu_check, R.drawable.ic_menu_check, R.drawable.ic_menu_check}; 
     String[] titles = {"My Cart", "Lotion", "Deodorants", "Gels"}; 

     for (int i = 0; i < titles.length && i < icons.length; i++) { 
      Information current = new Information(); 
      current.iconId = icons[i]; 
      current.title = titles[i]; 
      data.add(current); 
     } 
     return data; 
    } 

    public void setUp(int fragmentId, DrawerLayout drawerLayout, Toolbar toolbar) { 
     containerView = getActivity().findViewById(fragmentId); 
     mDrawerLayout = drawerLayout; 
     mDrawerToggle = new ActionBarDrawerToggle(getActivity(), drawerLayout, toolbar, R.string.drawer_open, R.string.drawer_close) { 

      @Override 
      public void onDrawerOpened(View drawerView) { 
       super.onDrawerOpened(drawerView); 
       if (!mUserLearnedDrawer) { 
        mUserLearnedDrawer = true; 
        saveToPreferences(getActivity(), KEY_USER_LEARNED_DRAWER, mUserLearnedDrawer + ""); 
       } 

      } 


      @Override 
      public void onDrawerClosed(View drawerView) { 
       super.onDrawerClosed(drawerView); 


      } 

     }; 
     if (!mUserLearnedDrawer && !mFromSavedInstanceState) { 
      mDrawerLayout.openDrawer(containerView); 
     } 
     mDrawerLayout.setDrawerListener(mDrawerToggle); 
     mDrawerLayout.post(new Runnable() { 
      @Override 
      public void run() { 
       mDrawerToggle.syncState(); 
      } 
     }); 
    } 


    @TargetApi(Build.VERSION_CODES.GINGERBREAD) 
    public static void saveToPreferences(Context context, String preferenceName, String preferenceValue) { 
     SharedPreferences sharedPreferences = context.getSharedPreferences(PREF_FILE_NAME, Context.MODE_PRIVATE); 
     SharedPreferences.Editor editor = sharedPreferences.edit(); 
     editor.putString(preferenceName, preferenceValue); 
     editor.apply(); 
    } 

    public static String readFromPreferences(Context context, String preferenceName, String defaultValue) { 
     SharedPreferences sharedPreferences = context.getSharedPreferences(PREF_FILE_NAME, Context.MODE_PRIVATE); 
     return sharedPreferences.getString(preferenceName, defaultValue); 
    } 
} 

Answer 1

wersja uproszczona tak, oto moja onbindVH:

@Override 
    public void onBindViewHolder(FeedsViewHolder holder, int position) { 
     final Feed item = mFeeds.get(position); 

     holder.textView1.setText(item.getText()); 
     holder.imageView.setImageDrawable(mContext.getResources().getDrawable(item.getImage)); 
     holder.imageView.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 
       fragmentJump(item); 
      } 
     }); 
    } 

oto fragmentJump:

private void fragmentJump(Feed mItemSelected) { 
    mFragment = new Fragment2(); 
    mBundle = new Bundle(); 
    mBundle.putParcelable("item_selected_key", mItemSelected); 
    mFragment.setArguments(mBundle); 
    switchContent(R.id.frag1, mFragment); 
} 

oto switchContent na adapterze:

public void switchContent(int id, Fragment fragment) { 
    if (mContext == null) 
     return; 
    if (mContext instanceof MainActivity) { 
     MainActivity mainActivity = (MainActivity) mContext; 
     Fragment frag = fragment; 
     mainActivity.switchContent(id, frag); 
    } 

} 

i wreszcie, oto switchContent na główną działalność:

public void switchContent(int id, Fragment fragment) { 
    FragmentTransaction ft = getSupportFragmentManager().beginTransaction(); 
    ft.replace(id, fragment, fragment.toString()); 
    ft.addToBackStack(null); 
    ft.commit(); 
} 

wiem, to może jeszcze być uproszczone, ale działa tak jak jest. Mam nadzieję, że to pomoże. :)

Answer 2

public class AdapterClass extends RecyclerView.Adapter<AdapterClass.MyViewHolder> { 
    private LayoutInflater inflater; 
    private Context context; 
    List<Information> data = Collections.emptyList(); 

    public AdapterClass(Context context, List<Information> data) { 
     this.context = context; 

     inflater = LayoutInflater.from(context); 
     this.data = data; 
    } 

    @Override 
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
     View view = inflater.inflate(R.layout.custom_row, parent, false); 
     MyViewHolder holder = new MyViewHolder(view); 
     return holder; 
    } 

    @Override 
    public void onBindViewHolder(MyViewHolder holder, int position) { 
     Information current = data.get(position); 
     holder.title.setText(current.title); 
     holder.icon.setImageResource(current.iconId); 

    } 

    @Override 
    public int getItemCount() { 
     return data.size(); 
    } 

    class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener { 
     TextView title; 
     ImageView icon; 

     public MyViewHolder(View itemView) { 
      super(itemView); 
      context = itemView.getContext(); 
      title = (TextView) itemView.findViewById(R.id.listText); 
      icon = (ImageView) itemView.findViewById(R.id.listIcon); 
      itemView.setClickable(true); 
      itemView.setOnClickListener(this); 
     } 

     @Override 
     public void onClick(View v) { 

      final Intent intent; 
      switch (getPosition()) { 
       case 0: 
        intent = new Intent(context, next.class); 
        break; 

       case 1: 
        intent = new Intent(context, next.class); 
        break; 

       case 2: 
        intent = new Intent(context, next.class); 
        break; 
       default: 
        intent = new Intent(context, next.class); 
        break; 
      } 
      context.startActivity(intent); 
     } 
    } 
}; 

Answer 3

W swoim starcie OnBindViewHolder następująco,

@Override 
     public void onClick(View view){ 

      AppCompatActivity activity = (AppCompatActivity) view.getContext(); 
      Fragment myFragment = new MyFragment(); 
      activity.getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container, myFragment).addToBackStack(null).commit(); 


     }