aggiornamento contenuto riciclabilità non riescono nel foglio inferiore

Question

Voglio modificare il contenuto dell'elenco in una vista del foglio di fondo, anche se faccio clic su evento, ma ho solo il foglio vuoto. Ecco una demo modificata da BottomSheetSample (github.com/niravkalola/BottomSheetSample).

mainActivity.java

package com.nkdroid.bottomsheetsample; 

import android.content.DialogInterface; 
import android.os.Bundle; 
import android.support.annotation.NonNull; 
import android.support.design.widget.BottomSheetBehavior; 
import android.support.design.widget.BottomSheetDialog; 
import android.support.v7.app.AppCompatActivity; 
import android.support.v7.widget.LinearLayoutManager; 
import android.support.v7.widget.RecyclerView; 
import android.view.View; 
import android.widget.Button; 

import java.util.ArrayList; 
import java.util.List; 
import java.util.Random; 

public class MainActivity extends AppCompatActivity implements ItemAdapter.ItemListener { 

private Button btnView, btnDialog; 
BottomSheetBehavior behavior; 
private BottomSheetDialog mBottomSheetDialog; 
private ItemAdapter mAdapter; 
RecyclerView recyclerView; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    btnView = (Button) findViewById(R.id.btnView); 
    btnDialog = (Button) findViewById(R.id.btnDialog); 
    btnView.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      mAdapter = new ItemAdapter(createItems()); 
      recyclerView.setAdapter(mAdapter); 
      behavior.setState(BottomSheetBehavior.STATE_EXPANDED); 
     } 
    }); 

    btnDialog.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      showBottomSheetDialog(); 
     } 
    }); 

    View bottomSheet = findViewById(R.id.bottom_sheet); 
    behavior = BottomSheetBehavior.from(bottomSheet); 
    behavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() { 
     @Override 
     public void onStateChanged(@NonNull View bottomSheet, int newState) { 
      // React to state change 
     } 

     @Override 
     public void onSlide(@NonNull View bottomSheet, float slideOffset) { 
      // React to dragging events 
     } 
    }); 

    recyclerView = (RecyclerView) findViewById(R.id.recyclerView); 
    recyclerView.setHasFixedSize(true); 
    recyclerView.setLayoutManager(new LinearLayoutManager(this)); 

    mAdapter = new ItemAdapter(createItems(), this); 
    recyclerView.setAdapter(mAdapter); 

} 


private void showBottomSheetDialog() { 
    if (behavior.getState() == BottomSheetBehavior.STATE_EXPANDED) { 
     behavior.setState(BottomSheetBehavior.STATE_COLLAPSED); 
    } 

    mBottomSheetDialog = new BottomSheetDialog(this); 
    View view = getLayoutInflater().inflate(R.layout.sheet, null); 
    RecyclerView recyclerView = (RecyclerView) view.findViewById(R.id.recyclerView); 
    recyclerView.setHasFixedSize(true); 
    recyclerView.setLayoutManager(new LinearLayoutManager(this)); 
    recyclerView.setAdapter(new ItemAdapter(createItems(), new ItemAdapter.ItemListener() { 
     @Override 
     public void onItemClick(Item item) { 
      if (mBottomSheetDialog != null) { 
       mBottomSheetDialog.dismiss(); 
      } 
     } 
    })); 

    mBottomSheetDialog.setContentView(view); 
    mBottomSheetDialog.show(); 
    mBottomSheetDialog.setOnDismissListener(new DialogInterface.OnDismissListener() { 
     @Override 
     public void onDismiss(DialogInterface dialog) { 
      mBottomSheetDialog = null; 
     } 
    }); 
} 


@Override 
protected void onDestroy() { 
    super.onDestroy(); 
    mAdapter.setListener(null); 
} 

public List<Item> createItems() { 
    Random r = new Random(); 
    ArrayList<Item> items = new ArrayList<>(); 
    items.add(new Item(R.mipmap.ic_launcher, "Item 1"+ r.nextInt(100))); 
    items.add(new Item(R.mipmap.ic_launcher, "Item 2")); 
    items.add(new Item(R.mipmap.ic_launcher, "Item 3")); 
    items.add(new Item(R.mipmap.ic_launcher, "Item 4")); 
    return items; 
} 

@Override 
public void onItemClick(Item item) { 
    behavior.setState(BottomSheetBehavior.STATE_COLLAPSED); 
} 

} 

ItemAdapter.java:

package com.nkdroid.bottomsheetsample; 

import android.support.v7.widget.RecyclerView; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ImageView; 
import android.widget.TextView; 
import java.util.List; 


public class ItemAdapter extends RecyclerView.Adapter<ItemAdapter.ViewHolder> { 

private List<Item> mItems; 
private ItemListener mListener; 

public ItemAdapter(List<Item> items, ItemListener listener) { 
    mItems = items; 
    mListener = listener; 
} 

public ItemAdapter(List<Item> items) { 
    mItems = items; 
} 

public void setListener(ItemListener listener) { 
    mListener = listener; 
} 

@Override 
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
    return new ViewHolder(LayoutInflater.from(parent.getContext()) 
      .inflate(R.layout.adapter, parent, false)); 
} 

@Override 
public void onBindViewHolder(ViewHolder holder, int position) { 
    holder.setData(mItems.get(position)); 
} 

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

public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener { 

    public ImageView imageView; 
    public TextView textView; 
    public Item item; 

    public ViewHolder(View itemView) { 
     super(itemView); 
     itemView.setOnClickListener(this); 
     imageView = (ImageView) itemView.findViewById(R.id.imageView); 
     textView = (TextView) itemView.findViewById(R.id.textView); 
    } 

    public void setData(Item item) { 
     this.item = item; 
     imageView.setImageResource(item.getDrawableResource()); 
     textView.setText(item.getTitle()); 
    } 

    @Override 
    public void onClick(View v) { 
     if (mListener != null) { 
      mListener.onItemClick(item); 
     } 
    } 
} 

public interface ItemListener { 
    void onItemClick(Item item); 
} 
} 

Ecco la cattura dopo click Mostra Visualizzazione tasto per la prima e la seconda volta: first click second click

Answer 1

Questo problema è stato risolto in 24.0.0, ad esempio, il recyclerView viene aggiornato. Ma se si utilizza wrap_content nel foglio dei fondi così come in recyclerview, si dovrà usare questo in modo che l'altezza del foglio di calcolo sia calcolata correttamente.

bottomSheetBehavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() { 
      @Override 
      public void onStateChanged(@NonNull View bottomSheet, int newState) { 

       if(newState==BottomSheetBehavior.STATE_EXPANDED){ 
        bottomSheet.requestLayout(); 

        /*or 
        recyclerView.scrollToPosition(0); 
        recyclerView.requestLayout();*/ 

       } 
      } 

      @Override 
      public void onSlide(@NonNull View bottomSheet, float slideOffset) { 

      } 
     }); 

Se si desidera lavorare con le versioni precedenti utilizzare

bottomSheetBehavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() { 
      @Override 
      public void onStateChanged(@NonNull View bottomSheet, int newState) { 

       if(newState==BottomSheetBehavior.STATE_EXPANDED){ 
        bottomSheet.requestLayout(); 
        bottomSheet.invalidate(); 
       } 
      } 

      @Override 
      public void onSlide(@NonNull View bottomSheet, float slideOffset) { 

      } 
     });