大家好我正在开发一个图库应用。 我已经实现了Gridview并从服务器显示图像。当点击该图像时，它将打开一个对话框，对话框底部包含viewpager和listview。
根据viewpager位置图像，它也会平滑幻灯片列表视图。
问题：我想在listview上显示叠加层，只显示当前焦点项目，其他项目看起来模糊不清。
这是我的代码
imagelist.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, final int i, long l) {
imagdialog = new Dialog(MainActivity.this);
imagdialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
imagdialog.setContentView(R.layout.imagelist);
imagdialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
@Override
public void onDismiss(final DialogInterface arg0) {
// recreate();
selectedAdapter = new Sadapter(getApplicationContext(), arraylist);
imagelist.setAdapter(selectedAdapter);
}
});
photoid = arraylist.get(i).getId();
Log.v("Photoid111", "" + photoid);
WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
lp.copyFrom(imagdialog.getWindow().getAttributes());
lp.width = WindowManager.LayoutParams.MATCH_PARENT;
lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
lp.gravity = Gravity.CENTER;
imagdialog.getWindow().setAttributes(lp);
viewpager = (ViewPager) imagdialog.findViewById(R.id.img);
final Button accept = (Button) imagdialog.findViewById(R.id.accept);
final Button reject = (Button) imagdialog.findViewById(R.id.reject);
final EditText cmnts = (EditText) imagdialog.findViewById(R.id.comnt);
ImageView closewin = (ImageView) imagdialog.findViewById(R.id.search_close_btn);
imglist = (RecyclerView) imagdialog.findViewById(R.id.imglist);
LinearLayoutManager sublimationmanager
= new LinearLayoutManager(imagdialog.getContext(), LinearLayoutManager.HORIZONTAL, false);
imglist.setLayoutManager(sublimationmanager);
cmnts.setText("" + arraylist.get(i).getCmnts());
cmnts.setSelection(cmnts.getText().length());
adaptor = new ViewPager_Adaptor(MainActivity.this, arraylist);
viewpager.setAdapter(adaptor);
viewpager.setCurrentItem(i);
img_adaptor = new Image_list(getApplicationContext(), arraylist);
imglist.setAdapter(img_adaptor);
imglist.smoothScrollToPosition(i);
pos = i;
viewpager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
@Override
public void onPageSelected(int position) {
photoid = arraylist.get(position).getId();
Log.v("Photoid", "" + photoid);
cmnts.setText("" + arraylist.get(position).getCmnts());
cmnts.setSelection(cmnts.getText().length());
imglist.smoothScrollToPosition(position);
pos = position;
}
@Override
public void onPageScrollStateChanged(int state) {
}
});
closewin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
imagdialog.dismiss();
selectedAdapter = new Sadapter(getApplicationContext(), arraylist);
imagelist.setAdapter(selectedAdapter);
}
});
accept.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
comments = cmnts.getText().toString();
Log.v("Photoid", "" + photoid);
Log.v("Photoid", "" + comments);
isInternetPresent = cd.isConnectingToInternet();
if (isInternetPresent) {
mdialog = new Dialog(MainActivity.this);
mdialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
mdialog.setContentView(R.layout.custom_progress_dialog);
mdialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent);
mdialog.setCancelable(false);
mdialog.show();
new Accept().execute(URL.amateurpath + "Accept");
} else {
if (imagdialog.isShowing())
imagdialog.dismiss();
nonetwork.setVisibility(View.VISIBLE);
main_layout.setVisibility(View.GONE);
noimg.setVisibility(View.GONE);
}
}
});
reject.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
comments = cmnts.getText().toString();
isInternetPresent = cd.isConnectingToInternet();
if (isInternetPresent) {
mdialog = new Dialog(MainActivity.this);
mdialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
mdialog.setContentView(R.layout.custom_progress_dialog);
mdialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent);
mdialog.setCancelable(false);
mdialog.show();
new Reject().execute(URL.amateurpath + "Reject");
} else {
if (imagdialog.isShowing())
imagdialog.dismiss();
nonetwork.setVisibility(View.VISIBLE);
main_layout.setVisibility(View.GONE);
noimg.setVisibility(View.GONE);
}
}
});
imagdialog.show();
}
});
这是我的Viewpager适配器
public class ViewPager_Adaptor extends PagerAdapter {
private Context context;
ArrayList<CustomImages> data;
private LayoutInflater layoutInflater;
public ViewPager_Adaptor(Context context, ArrayList<CustomImages> arraylist) {
// TODO Auto-generated constructor stub
this.context = context;
data = arraylist;
Log.d("Abhi", data.toString());
}
@Override
public int getCount() {
// TODO Auto-generated method stub
Log.d("DATASIZE", String.valueOf(data.size()));
return data.size();
}
@Override
public boolean isViewFromObject(View view, Object object) {
return (view == (LinearLayout) object);
}
@Override
public Object instantiateItem(ViewGroup container, final int position) {
layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View itemview = layoutInflater.inflate(R.layout.viewpager_img, container, false);
final ImageView iimg = (ImageView) itemview.findViewById(R.id.imageview1);
ImageView clockw = (ImageView) itemview.findViewById(R.id.clock);
ImageView anticlockw = (ImageView) itemview.findViewById(R.id.anticlock);
clockw.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
iimg.setRotation(iimg.getRotation() + 90);
}
});
anticlockw.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
iimg.setRotation(iimg.getRotation() - 90);
}
});
Picasso.with(MainActivity.this).load(data.get(position).getUrl().replaceAll(" ", "%20")).placeholder(R.drawable.temp_img).error(R.drawable.no_media).into(iimg);
iimg.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intnt = new Intent(MainActivity.this, ImageShow.class);
intnt.putExtra("photo", data.get(position).getPhoto());
intnt.putExtra("url", data.get(position).getUrl());
startActivity(intnt);
}
});
container.addView(itemview);
return itemview;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView((LinearLayout) object);
}
}
最后Listview适配器如下
public class Image_list extends RecyclerView.Adapter<Image_list.MyViewHolder> {
ArrayList<CustomImages> arraylist1;
Context c;
public Image_list(Context c, ArrayList<CustomImages> arraylist) {
this.arraylist1 = arraylist;
this.c = c;
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.inflate_image_list, parent, false);
return new MyViewHolder(itemView);
}
@Override
public void onBindViewHolder(final MyViewHolder holder, final int position) {
Log.v("Position of i", "" + pos);
// if (pos == position) {
// holder.img.setBackgroundResource(R.drawable.border);
// } else {
//
//}
Picasso
.with(this.c)
.load(arraylist1.get(position).getUrl().replaceAll(" ", "%20"))
.placeholder(R.drawable.temp_img) // can also be a drawable
.placeholder(R.drawable.temp_img)
.error(R.drawable.no_media)
.into(holder.img);
}
@Override
public int getItemCount() {
return arraylist1.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder {
public ImageView img;
public MyViewHolder(View view) {
super(view);
img = (ImageView) view.findViewById(R.id.catimg);
view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
int position = getLayoutPosition();
viewpager.setCurrentItem(position);
}
});
}
}
}
问题：我想在listview上显示叠加层，只显示当前焦点项目，其他项目看起来模糊不清。
由于对问题的关注，我设法根据viewpager幻灯片滑动列表但我想显示blurissh图像并且只关注listview中显示的listview中的一个图像。
显示在viewpager
中显示的屏幕右侧列表中的图像答案 0 :(得分：1)
每当在viewPager中选择一个项目时，获取该项目的位置。将该项的位置保存在适配器中的变量viewPagerPosition中。然后通过调用notifyDataSetChanged()刷新适配器。
在适配器中有一个具有一定透明度的视图，并将其视为默认值。在适配器的onBindViewHolder中检查
if(position = viewPagerPosition){
transparentView.setVisibility(GONE);
} else{
transparentView.setVisibility(VISIBLE);
}
这应该使当前视图突出显示，其他视图变暗。如果你想要模糊，那么你可以使用相同条件的模糊。