package com.newmap.adapter;import android.content.Context;import android.content.Intent;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.os.Environment;import android.support.v7.widget.CardView;import android.support.v7.widget.RecyclerView.Adapter;import android.support.v7.widget.RecyclerView.ViewHolder;import android.util.Log;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.widget.ImageView;import android.widget.LinearLayout;import com.newmap.cjapp.DragImageActivity;import com.newmap.cjapp.R;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.InputStream;import java.util.List;public class PictureAdapter extends Adapter<PictureAdapter.MyViewHolder> {    PRivate Context mContext;    private List<String> mPictureList;    private LayoutInflater inflater;    private float density;    class MyViewHolder extends ViewHolder {        CardView cardView;        ImageView iv_picture;        public MyViewHolder(View view) {            super(view);            cardView = (CardView) view.findViewById(R.id.cardView);            iv_picture = (ImageView) view.findViewById(R.id.iv_picture);        }    }    public PictureAdapter(Context context, List<String> pictureList) {        mContext = context;        mPictureList = pictureList;        inflater = LayoutInflater.from(mContext);        density = mContext.getResources().getDisplayMetrics().density;    }    @Override    public int getItemCount() {        return mPictureList.size();    }    @Override    public void onBindViewHolder(MyViewHolder arg0, final int arg1) {        showPicture(arg0.cardView, arg0.iv_picture, mPictureList.get(arg1));        //單個刪除在這加arg0.xx獲取刪除按鈕，然后寫點擊事件，觸發刪除    }    @Override    public MyViewHolder onCreateViewHolder(ViewGroup arg0, int arg1) {        MyViewHolder holder = new MyViewHolder(inflater.inflate(                R.layout.item_picture, arg0, false));        return holder;    }    private void showPicture(CardView cardView, ImageView imageView, String name) {        final String path = Environment.getExternalStorageDirectory().getPath()                + "/鄂爾多斯/" + name;        BitmapFactory.Options options = new BitmapFactory.Options();        options.inJustDecodeBounds = true;        Bitmap mBitmap = BitmapFactory.decodeFile(path, options);        if (mBitmap == null) {// 調整ImageView的大小            LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) cardView                    .getLayoutParams();            lp.height = (int) (200 * density + 10 * density);            double scale = 1.0 * options.outWidth / options.outHeight;            lp.width = (int) (200 * scale * density + 10 * density);            cardView.setLayoutParams(lp);            Log.e("imageview", "寬:" + lp.width + "   高:" + lp.height);        }        options.inJustDecodeBounds = false;        options.inSampleSize = 4; // width，height設為原來的四分之一        InputStream is;        try {            is = new FileInputStream(path);            mBitmap = BitmapFactory.decodeStream(is, null, options);            imageView.setImageBitmap(mBitmap);        } catch (FileNotFoundException e) {            e.printStackTrace();        }//圖片的點擊刪除事件        imageView.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                Intent intent = new Intent(mContext, DragImageActivity.class);                intent.putExtra("photopath", path);                mContext.startActivity(intent);            }        });    }    public void insertPicture(String name, int position) {        mPictureList.add(name);        notifyItemInserted(position);    }    public void insertPicture(String name) {        mPictureList.add(name);        notifyItemInserted(mPictureList.size() - 1);    }//單個刪除方法    public void removePicture(int position) {        mPictureList.remove(position);        notifyItemRemoved(position);    }}