在网格视图中，我选择了两个图像（复选框），我将视图向下滚动到底部，不知何故，这些选择显示在完全不同的图像上。
这是我的代码。请帮我这个
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class GridViewImageAdapter extends BaseAdapter {
private static final float ASPECT_RATIO = 10/16f; //To show grid view items as rectangles instead of squares
private Activity mActivity;
private ArrayList<File> mFiles = new ArrayList<File>();
private ArrayList<File> mSelectedFiles = new ArrayList<File>();
private int mImageWidth;
private File mCurrentFolder;
private PresentationUtils mUtils;
public GridViewImageAdapter gridViewAdpter = this;
Resources resources;
public GridViewImageAdapter(Activity activity, File folderToScan,
int imageWidth) {
this.mActivity = activity;
this.mCurrentFolder = folderToScan;
this.mImageWidth = imageWidth;
this.mFiles = new PresentationUtils(mActivity).getFiles(folderToScan.getAbsolutePath(), true);
mUtils = new PresentationUtils(mActivity);
}
@Override
public int getCount() {
return this.mFiles.size();
}
@Override
public Object getItem(int position) {
return this.mFiles.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
final CheckBox gViewItemSelBt;
TextView label;
View v;
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) mActivity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.grid_view_item, null);
} else {
v = convertView;
}
imageView = (ImageView) v.findViewById(R.id.image);
label = (TextView) v.findViewById(R.id.label);
gViewItemSelBt = (CheckBox) v.findViewById(R.id.imageSelector);
// get screen dimensions
Bitmap image = null;
if(!mFiles.get(position).isDirectory()){
image = decodeFile(mFiles.get(position).getAbsolutePath(), mImageWidth,
mImageWidth);
final int pos = position;
gViewItemSelBt.setVisibility(View.VISIBLE);
gViewItemSelBt.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(gViewItemSelBt.isChecked()){
mSelectedFiles.add(mFiles.get(pos));
}else{
mSelectedFiles.remove(mFiles.get(pos));
};
}
});
} else {
image = BitmapFactory.decodeResource(mActivity.getResources(),
R.drawable.ic_folder);
/*File latestFile = mFiles.get(mFiles.size() -1);
image = BitmapFactory.decodeResource(mActivity.getResources(), R.drawable.ic_folder );
image = decodeFile(latestFile.getAbsolutePath(), mImageWidth,
mImageWidth);*/
gViewItemSelBt.setVisibility(View.GONE);
}
int height = (int) (mImageWidth*ASPECT_RATIO);
imageView.setImageBitmap(image);
imageView.setLayoutParams(new RelativeLayout.LayoutParams(mImageWidth, height));
imageView.setOnClickListener(new OnImageClickListener(position));
if(mUtils.getSharedValue(mActivity, mFiles.get(position).getName()).length() > 0 ){
mActivity.getActionBar().setTitle(mCurrentFolder.getName());
label.setText(mUtils.getSharedValue(mActivity, mFiles.get(position).getName()));
}
else{
label.setText(mFiles.get(position).getName());
mActivity.getActionBar().setTitle("Albums");
}
return v;
}
class OnImageClickListener implements OnClickListener {
int mPostion;
// constructor
public OnImageClickListener(int position) {
this.mPostion = position;
}
@Override
public void onClick(View v) {
// on selecting grid view image
// launch full screen activity
if(mFiles.get(mPostion).isDirectory()){
//We just need to go one level deeper and load images from there
mCurrentFolder = new File(mFiles.get(mPostion).getAbsolutePath());
loadFiles();
mActivity.invalidateOptionsMenu();
}else{
//An image has been clicked, open in full screen view
Intent i = new Intent(mActivity, FullScreenViewActivity.class);
i.putExtra(AppConstant.INTENT_DATA_POSITION, mPostion);
i.putExtra(AppConstant.INTENT_DATA_FOLDER, mCurrentFolder.getAbsolutePath());
i.putExtra(AppConstant.INTENT_DATA_IMAGENAME, mFiles.get(mPostion).getName());
mActivity.startActivity(i);
}
}
}
/*
* Resizing image size
*/
public static Bitmap decodeFile(String filePath, int WIDTH, int HIGHT) {
try {
File f = new File(filePath);
BitmapFactory.Options o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
if(!f.isDirectory())
BitmapFactory.decodeStream(new FileInputStream(f), null, o);
final int REQUIRED_WIDTH = WIDTH;
final int REQUIRED_HIGHT = HIGHT;
int scale = 1;
while (o.outWidth / scale / 2 >= REQUIRED_WIDTH
&& o.outHeight / scale / 2 >= REQUIRED_HIGHT)
scale *= 2;
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize = scale;
if(!f.isDirectory()){
return BitmapFactory.decodeStream(new FileInputStream(f), null, o2);
}else{
return null;
}
} catch (FileNotFoundException e) {
e.printStackTrace();
}
return null;
}
public void goBackOneLevel() {
mCurrentFolder = mCurrentFolder.getParentFile();
mActivity.getActionBar().setTitle("Albums");
loadFiles();
}
public boolean isAtRootFolder() {
File rootImageFolder = new File(mActivity.getFilesDir().getPath()
+ File.separator + AppConstant.PHOTO_GALLERY_ROOT_FOLDER);
if(mCurrentFolder.compareTo(rootImageFolder) == 0){
return true;
}
return false;
}
public void loadFiles() {
mFiles = mUtils.getFiles(mCurrentFolder.getAbsolutePath(), true);
notifyDataSetChanged();
}
public void createAlbum(String albumName){
mUtils.moveFiles(this.mSelectedFiles, albumName);
}
public void deleteFile(){
mUtils.deleteFile(this.mSelectedFiles);
}
public boolean isFileSelected(){
notifyDataSetChanged();
if(this.mSelectedFiles.isEmpty()){
return false;
}else{
return true;
}
}
}
答案 0 :(得分：1)