しつしつ【Android】AdapterクラスからAdapterクラスを呼んだ際に画像が取得できない

Question

AndroidでList内にGridで複数の画像を表示させたいのですが、1度目の表示では画像が表示されず、
２回目以降の表示では画像が読み込まれた状態で表示がされます。

１度目の画面表示で画像を表示させることができないので困っています。
■呼び出し元のAdapter

import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ListAdapter;
import android.widget.TextView;

import java.util.ArrayList;

import hogehoge.model.GridviewObject;
import hogehoge.model.postStoryComment;

public class StoryCommentListviewImageLoaderAdapter extends BaseAdapter{

        private Context activity;
        private ArrayList<postStoryComment> data;
        private static LayoutInflater inflater = null;
        private View vi;
        private ViewHolder viewHolder;
        GridviewInListviewAdapter mAdapter;
        ArrayList<GridviewObject> mArray = new ArrayList<GridviewObject>();
        GridviewAdapter mGrid;
        int numImg;

        public StoryCommentListviewImageLoaderAdapter(Context context, ArrayList<postStoryComment> items) {
                this.activity = context;
                this.data = items;
                inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        }

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

        @Override
        public Object getItem(int i) {
                return i;
        }

        @Override
        public long getItemId(int i) {
                return i;
        }

        @Override
        public View getView(int position, View view, ViewGroup viewGroup) {
                vi = view;
                final int pos = position;
                postStoryComment items = data.get(pos);
                if(view == null) {
                        Log.d("LogD", "IF Adapter"+view+" , Position : "+position);

                        vi = inflater.inflate(R.layout.comment_itemlist, null);
                        viewHolder = new ViewHolder();
                        viewHolder.name = (TextView) vi.findViewById(R.id.psCommentUser);
                        viewHolder.date = (TextView) vi.findViewById(R.id.psCommentDate);
                        viewHolder.content = (TextView) vi.findViewById(R.id.psCommentTxt);
                        mGrid = (GridviewAdapter) vi.findViewById(R.id.commentgridview);

                        vi.setTag(viewHolder);
                }else
                        viewHolder = (ViewHolder) view.getTag();
                        viewHolder.name.setText(items.getUser());
                        viewHolder.date.setText(items.getDate());
                        viewHolder.content.setText(items.getContent());

                mArray.clear();
                numImg=0;
                String testUrl = items.getImg();

                String[] separated = testUrl.split(",");
                numImg = separated.length;
                if(!testUrl.equals("")) {
                        Log.d("LogD", "DO Gridview : "+position);

                        for (String item : separated) {
                                Log.d("LogD", "add : " + item);
                                mArray.add(new GridviewObject(item));
                        }
                        Log.d("LogD", "NumImg : " + numImg);
                        mAdapter = new GridviewInListviewAdapter(activity, mArray);
                        mGrid.setNumColumns(numImg);
                        mGrid.setAdapter(mAdapter);
                        setDynamicWidth(mGrid);
                }



                return vi;
        }
        public ArrayList<postStoryComment> getAllData(){
                return data;
        }


        public class ViewHolder{
                TextView name;
                TextView date;
                TextView content;
                GridviewAdapter gridview;
                TextView image;
        }

        private void setDynamicWidth(GridView gridView) {
                ListAdapter gridViewAdapter = gridView.getAdapter();
                if (gridViewAdapter == null) {
                        return;
                }
                int totalWidth;
                int items = gridViewAdapter.getCount();
                View listItem = gridViewAdapter.getView(0, null, gridView);
                listItem.measure(0, 0);
                totalWidth = listItem.getMeasuredWidth();
                totalWidth = totalWidth*items;
                ViewGroup.LayoutParams params = gridView.getLayoutParams();
                params.width = totalWidth;
                gridView.setLayoutParams(params);
        }
}

■呼び出し先のAdapter

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.BaseAdapter;

import com.squareup.picasso.Picasso;

import java.util.ArrayList;

import hogehoge.model.GridviewObject;
import hogehoge.R;

public class GridviewImageLoaderAdapter extends BaseAdapter{

        Context mContext;
        ArrayList<GridviewObject> mArray = new ArrayList<GridviewObject>();
        private static LayoutInflater inflater = null;

        public GridviewImageLoaderAdapter(Context context, ArrayList<GridviewObject> objects) {

                this.mContext = context;
                this.mArray = objects;
                inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        }

        @Override
        public int getCount() {
                return mArray.size();
        }

       @Override
        public Object getItem(int i) {
                return i;
        }

        @Override
        public long getItemId(int i) {
                return i;
        }

        public class ViewHolder {

                ImageView mImage;

        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {

                ViewHolder holder;

                GridviewObject object = mArray.get(position);

                if (convertView == null) {
                        convertView = inflater.inflate(R.layout.gridview_item_comment, parent,false);
                        holder = new ViewHolder();
                        holder.mImage = (ImageView) convertView.findViewById(R.id.gvItem);
                        convertView.setTag(holder);
                }else{
                holder = (ViewHolder) convertView.getTag();
                }


                Picasso.with(mContext).load(object.getImgUrl()).fit().into(holder.mImage);

                return convertView;

        }
}

Comments

[yona]

うまくいかないではわかりません。
なにがどうなっているのか詳細に書いてください。

Answer 1

下記の内容を確認してください。

• setDynamicWidth内のparams.widthの値。
• Adapterに渡す前のmArrayの要素数

コードについて

• mGridの型はGridviewAdapterではなくGridViewの誤り？
• StoryComment略のgetViewの冒頭部分のelseブロックの波カッコが無いのはなぜか。
• mArrayがフィールド変数になっている理由。