GridView和CheckBox结合使用

源码下载地址：http://download.csdn.net/detail/chenming1990118/6402591

说明：1.调用系统相册，获得相册图片用gridview显示

            2.在checkbox事件中，先实例一个HashMap对象，当选中时，则把该图片的position和图片路径用HashMap存储，如:map.put(position,path)

               在全局变量声明一个 private ArrayList<HashMap<Integer, String>> tempList = new ArrayList<HashMap<Integer, String>>();

               再把map对象添加到ArrayList数组里面去，如:tempList.add(map);

            3.当取消时，则对所有已添加的ArrayList数组遍历，不能直接在循环中remove，否则会报ConcurrentModificationException异常，可用Iterator 迭代，在for循环                把HashMap 对象所有的key取出，用Set集合接收，再对Set集合遍历，判断postion是否与map的key相等，如果相等，则remove()

         Activity代码：

         

package com.test.activity;import java.util.ArrayList;import java.util.HashMap;import java.util.Iterator;import java.util.Map;import java.util.Map.Entry;import android.app.Activity;import android.database.Cursor;import android.net.Uri;import android.os.Bundle;import android.provider.MediaStore;import android.util.Log;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.GridView;import android.widget.Toast;import com.test.adapter.GridViewApdapter;import com.test.util.CacheMap;import com.test.util.CameraAndPhotoLibUtil;/** * 选择多张图片实现类 *  * @author admin *  */public class BatchUploadImgActivity extends Activity {private GridView gridView;private Button finishBt;private ArrayList<HashMap<String, String>> potos = new ArrayList<HashMap<String, String>>();private ArrayList<HashMap<Integer, String>> img_list;private GridViewApdapter gApdapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.poto_gridview);initView();// 获取手机相册图片getSysPoto();initListener();}/** * 界面初始化 */private void initView() {gridView = (GridView) findViewById(R.id.img_gridview);finishBt = (Button) findViewById(R.id.treasure_finish_button);}/** * 事件初始化 */private void initListener() {finishBt.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stub//声明一个临时列表存储图片路径 ArrayList<String> temp_imgs = new ArrayList<String>();// 获得选择的图片路径 列表img_list = CacheMap.getDate();//对图片路径列表遍历且储存到临时列表for(HashMap<Integer, String> map : img_list) {Iterator<Entry<Integer, String>> iter = map.entrySet().iterator();while (iter.hasNext()) {Map.Entry<Integer, String> entry = (Entry<Integer, String>)iter.next();temp_imgs.add(entry.getValue());}}Log.i("temp_imgs size", temp_imgs.size() + "");Toast.makeText(getApplication(), "选择了" + temp_imgs.size() + "张图片", Toast.LENGTH_LONG).show();/*Intent intent = new Intent();intent.putExtra("img_list", temp_imgs);setResult(RESULT_OK, intent);finish();*/}});}/** * 获取手机相册图片 */private void getSysPoto() {/* * Log.i("come in", "come in"); Intent intentPhoto = * CameraAndPhotoLibUtil.getPhoto( BatchUploadImgActivity.this, * Intent.ACTION_GET_CONTENT, true); startActivityForResult(intentPhoto, * REQUEST_PHOTOLIB); */Uri uri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;String[] projection = { MediaStore.Images.Media._ID,MediaStore.Images.Media.DISPLAY_NAME,MediaStore.Images.Media.DATA, MediaStore.Images.Media.SIZE };String selection = MediaStore.Images.Media.MIME_TYPE + "=?";String[] selectionArg = { "image/jpeg" };Cursor mCursor = managedQuery(uri, projection, selection, selectionArg,MediaStore.Images.Media.DISPLAY_NAME);potos = CameraAndPhotoLibUtil.getSystemPotos(getApplication(), mCursor);Log.i("potos size", potos.size() + "");gApdapter = new GridViewApdapter(BatchUploadImgActivity.this, potos);gridView.setAdapter(gApdapter);}/* * protected void onActivityResult(int requestCode, int resultCode, Intent * data) { *  * if (resultCode != RESULT_OK) { Log.e("error", * "ActivityResult resultCode error"); return; } switch (requestCode) { case * REQUEST_CAMERA:// 拍照 Uri imageUri = data.getData(); Intent intentCut = * CameraAndPhotoLibUtil.cropImageUri(imageUri, 60, 60); * startActivityForResult(intentCut, REQUEST_CUT); break; case * REQUEST_PHOTOLIB:// 相册 Log.i("come in poto", "come in poto"); Uri uri = * data.getData(); *  * ContentResolver resolver = getContentResolver(); *  * String[] proj = { MediaStore.Images.Media.DATA }; *  * Cursor cursor = managedQuery(uri, proj, null, null, null); *  * potos = CameraAndPhotoLibUtil.getSystemPotos(uri, getApplication(), * cursor); *  * if(potos == null) { Log.e("error", "error"); }else { Log.i("poto size", * potos.size() + ""); } *  * Bitmap bmPhoto = null; try { bmPhoto = * MediaStore.Images.Media.getBitmap(resolver, uri); *  * String[] proj = { MediaStore.Images.Media.DATA }; *  * Cursor cursor = managedQuery(uri, proj, null, null, null); *  *  * if(cursor != null) { cursor.moveToFirst(); while(cursor.getPosition() != * cursor.getCount()) { *  * HashMap<String, String> maps = new HashMap<String, String>(); *  * Log.i("column index", * cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media._ID))); * Log.i("column name", * cursor.getString(cursor.getColumnIndex(MediaStore.Images * .Media.DISPLAY_NAME))); *  * maps.put("imageId", * cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media._ID))); * maps.put("imageName", * cursor.getString(cursor.getColumnIndex(MediaStore.Images * .Media.DISPLAY_NAME))); *  * } } *  * // 获得用户选择的图片的索引值 //int column_index = cursor // * .getColumnIndexOrThrow(MediaStore.Images.Media.DATA); *  * // 将光标移至开头 ，这个很重要，不小心很容易引起越界 //cursor.moveToFirst(); *  * // 最后根据索引值获取图片路径 //path = cursor.getString(column_index); *  * // String imgpath = FileUtils.getSDPath() + File.separator + // * "nanfangyoudao"; *  * // Log.i("path=", path); *  * } catch (FileNotFoundException e) { // TODO Auto-generated catch block * e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated * catch block e.printStackTrace(); } // Bitmap bmPhoto = (Bitmap) * data.getExtras().get("data"); //imageButton.setImageBitmap(bmPhoto); *  * break; case REQUEST_CUT:// 裁剪 Bitmap bmCut = (Bitmap) * data.getExtras().get("data"); *  * //imageButton.setImageBitmap(bmCut); break; *  * default: break; } }; */}

       适配器代码：

       

package com.test.adapter;import java.util.ArrayList;import java.util.HashMap;import java.util.Iterator;import java.util.Map;import java.util.Map.Entry;import java.util.Set;import android.content.Context;import android.graphics.Bitmap;import android.provider.MediaStore;import android.provider.MediaStore.Images;import android.util.Log;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.CheckBox;import android.widget.CompoundButton;import android.widget.CompoundButton.OnCheckedChangeListener;import android.widget.ImageView;import com.test.activity.R;import com.test.util.CacheMap;/** * 相册适配器 *  * @author admin *  */public class GridViewApdapter extends BaseAdapter {private LayoutInflater lInflater;private Context context;private ArrayList<HashMap<String, String>> list;private ArrayList<HashMap<Integer, String>> tempList = new ArrayList<HashMap<Integer, String>>();public GridViewApdapter(Context context,ArrayList<HashMap<String, String>> list) {this.context = context;this.list = list;lInflater = LayoutInflater.from(context);}@Overridepublic int getCount() {// TODO Auto-generated method stubreturn list.size();}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn position;}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn position;}@Overridepublic View getView(final int position, View convertView, ViewGroup parent) {// TODO Auto-generated method stubViewHolder holder;if (convertView == null) {holder = new ViewHolder();convertView = lInflater.inflate(R.layout.gridview_item, null);holder.imageView = (ImageView) convertView.findViewById(R.id.poto_ItemImage);holder.checkBox = (CheckBox) convertView.findViewById(R.id.poto_checkbox);convertView.setTag(holder);} else {holder = (ViewHolder) convertView.getTag();}Bitmap bm = MediaStore.Images.Thumbnails.getThumbnail(context.getContentResolver(),Long.parseLong((String) list.get(position).get("imageId")),Images.Thumbnails.MICRO_KIND, null);holder.imageView.setImageBitmap(bm);holder.checkBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {@Overridepublic void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {// TODO Auto-generated method stub//每次进来都实例化mapHashMap<Integer, String> map = new HashMap<Integer, String>();if (isChecked) {// SD卡图片的地址String path = list.get(position).get("imagePath");map.put(position, path);//将 map对象添加到listtempList.add(map);} else {/** * 注意：不能直接对tempList列表循环在循环里面remove会报ConcurrentModificationException异常 */for (Iterator<HashMap<Integer, String>> it = tempList.iterator(); it.hasNext();) {HashMap<Integer, String> haMap = it.next();//取出Map里面所有的keySet<Integer> set = haMap.keySet();//对map里面所有的key循环for(Integer integer : set) {//如果选择的postition与key相等，则移除 if(integer.equals(position)) {it.remove();}}}}Log.i("tempList size", tempList.size()+"");CacheMap.putDate(tempList);for(HashMap<Integer, String> tempMap : tempList) {Iterator<Entry<Integer, String>> iter = tempMap.entrySet().iterator();while(iter.hasNext()) {Map.Entry<Integer, String> entry = (Entry<Integer, String>)iter.next();Log.i("key=" + entry.getKey(), ",value=" + entry.getValue());}}}});return convertView;}class ViewHolder {ImageView imageView;CheckBox checkBox;}}

效果图：