package com.daisy.android.components;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import android.app.Activity;

import android.content.ContentResolver;

import android.content.Context;

import android.content.Intent;

import android.database.Cursor;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.net.Uri;

import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.widget.AdapterView;

import android.widget.GridView;

import android.widget.ImageView;

import android.widget.ListAdapter;

import android.widget.SimpleAdapter;

import android.widget.Toast;

import android.widget.AdapterView.OnItemClickListener;

import android.provider.MediaStore.Images.Thumbnails;

import android.provider.MediaStore.Images.Media;

/**

*@author Andrew.Lee

*@create 2011-6-9 下午01:17:03

*@version 1.0

*@see

*/

publicclass ThumbnailActivity extends Activity {

publicstatic String TAG = "Thumbnails";

private GridView gridView;

private ArrayList<HashMap<String, String>> list;

private ContentResolver cr;

@Override

protectedvoid onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

findViews();

}

privatevoid findViews() {

gridView = (GridView) findViewById(R.id.gridview);

list = new ArrayList<HashMap<String, String>>();

cr = getContentResolver();

String[] projection = { Thumbnails._ID, Thumbnails.IMAGE_ID,

Thumbnails.DATA };

Cursor cursor = cr.query(Thumbnails.EXTERNAL_CONTENT_URI, projection,

null, null, null);

getColumnData(cursor);

String[] from = { "path" };

int[] to = { R.id.p_w_picpathView };

ListAdapter adapter = new GridAdapter(this, list, R.layout.item, from,

to);

gridView.setAdapter(adapter);

gridView.setOnItemClickListener(listener);

}

privatevoid getColumnData(Cursor cur) {

if (cur.moveToFirst()) {

int _id;

int p_w_picpath_id;

String p_w_picpath_path;

int _idColumn = cur.getColumnIndex(Thumbnails._ID);

int p_w_picpath_idColumn = cur.getColumnIndex(Thumbnails.IMAGE_ID);

int dataColumn = cur.getColumnIndex(Thumbnails.DATA);

do {

// Get the field values

_id = cur.getInt(_idColumn);

p_w_picpath_id = cur.getInt(p_w_picpath_idColumn);

p_w_picpath_path = cur.getString(dataColumn);

// Do something with the values.

Log.i(TAG, _id + " p_w_picpath_id:" + p_w_picpath_id + " path:"

+ p_w_picpath_path + "---");

HashMap hash = new HashMap();

hash.put("p_w_picpath_id", p_w_picpath_id + "");

hash.put("path", p_w_picpath_path);

list.add(hash);

} while (cur.moveToNext());

}

}

OnItemClickListener listener = new OnItemClickListener() {

@Override

publicvoid onItemClick(AdapterView<?> parent, View view, int position,

long id) {

// TODO Auto-generated method stub

String p_w_picpath_id = list.get(position).get("p_w_picpath_id");

Log.i(TAG, "---(^o^)----" + p_w_picpath_id);

String[] projection = { Media._ID, Media.DATA };

Cursor cursor = cr.query(Media.EXTERNAL_CONTENT_URI, projection,

Media._ID + "=" + p_w_picpath_id, null, null);

if (cursor != null) {

cursor.moveToFirst();

String path = cursor.getString(cursor

.getColumnIndex(Media.DATA));

Intent intent = new Intent(ThumbnailActivity.this,

ImageViewer.class);

intent.putExtra("path", path);

startActivity(intent);

} else {

Toast.makeText(ThumbnailActivity.this, "Image doesn't exist!",

Toast.LENGTH_SHORT).show();

}

}

};

class GridAdapter extends SimpleAdapter {

public GridAdapter(Context context,

List<? extends Map<String, ?>> data, int resource,

String[] from, int[] to) {

super(context, data, resource, from, to);

// TODO Auto-generated constructor stub

}

// set the p_w_picpathView using the path of p_w_picpath

publicvoid setViewImage(ImageView v, String value) {

try {

Bitmap bitmap = BitmapFactory.decodeFile(value);

Bitmap newBit = Bitmap

.createScaledBitmap(bitmap, 100, 80, true);

v.setImageBitmap(newBit);

} catch (NumberFormatException nfe) {

v.setImageURI(Uri.parse(value));

}

}

}

}