Question

我正在使用自定义适配器显示列表视图。列表视图的每个项目基本上都有一个照片（Imageview）和一个像（FlipImageView）按钮和一个textView来显示喜欢的数量。我已经在列表视图中填充了3个项目。奇怪的问题是，当我点击第二张照片的类似按钮时，没有响应（没有图像翻转，喜欢的数量没有变化）。相反，第一张照片按钮响应，第一张照片的喜欢数量增加。第二个奇怪的问题是，listview的第一项未完全填充（imageview位于空白，而其他列表项的imageview完全膨胀）。但是当我滚动并回到第一个项目时，它会完全膨胀。这是适配器代码，每个列表项的xml文件和Listview本身。如何解决这些问题？

class PostAdapter extends ArrayAdapter<eachpost> 
{
  ArrayList<eachpost> posts;
  ViewHolder vholder;
  String root = Environment.getExternalStorageDirectory().toString();
  File dir = new File (root + "/fishograph/.feed");
    public PostAdapter(Context context, int resource, ArrayList<eachpost> list) {
        super(context, R.layout.postcontent, list);
        posts = list;
    }
    @Override
    public View getView(int pos,View vu,ViewGroup vg)
    {
      final eachpost post = posts.get(pos);
      final int finalpos = pos;
      final String han = post.getHandle();
      final String imgurl = post.getDpbase64();

      if(vu == null)
      { 
        vu = getActivity().getLayoutInflater().inflate(R.layout.postcontent,vg,false); 
        vholder = new ViewHolder();
        vholder.handle = ((TextView) vu.findViewById(R.id.handle));
        vholder.caption = ((TextView) vu.findViewById(R.id.caption));
        vholder.likesnum = ((TextView) vu.findViewById(R.id.likesnum));
        vholder.comnum = ((TextView) vu.findViewById(R.id.comnum));
        vholder.uploadtime = ((TextView) vu.findViewById(R.id.uploadtime));
        vholder.photo = (ImageView) vu.findViewById(R.id.imgpost);
        vholder.feeddp = (ImageView) vu.findViewById(R.id.realdp);
        vholder.like = (FlipImageView) vu.findViewById(R.id.like);
        Drawable d =getResources().getDrawable(R.drawable.hook_like);
        vholder.like.setFlippedDrawable(d);
        LayoutParams lp = vholder.photo.getLayoutParams();
        lp.width = width;
        lp.height = width;
        vholder.feeddp.requestLayout();
        vholder.like.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                 // TODO Auto-generated method stub
                if(!likes.contains(imgurl))
                   {
                    RequestParams rp = new RequestParams();
                    rp.add("handle",handle);
                    rp.add("url",imgurl);
                    vholder.like.toggleFlip();
                    new AsyncHttpClient().post("Php script to increment like",rp,new AsyncHttpResponseHandler(){
                        @Override
                        public void onFailure(int code,Throwable t,String err)
                        {
                            Toast.makeText(getActivity(), "Something went wrong..Please try again", Toast.LENGTH_SHORT).show();
                            Log.d("onError like",err);
                            vholder.like.toggleFlip();
                        }
                        @Override
                        public void onSuccess(String response)
                        {
                            response = response.trim();
                            Log.d("like", response);
                            if(!response.equals("liked"))
                                { 
                                 Toast.makeText(getActivity(), "Something went wrong..Please try again", Toast.LENGTH_SHORT).show();
                                 vholder.like.toggleFlip();
                                }
                            else
                                { likes.add(imgurl);
                                  post.incrementLikes();
                                  vholder.likesnum.setText(post.getLikes()+"");
                                }
                        }
                    });
                  }
                else
                  {
                    RequestParams rp = new RequestParams();
                    rp.add("handle",handle);
                    rp.add("url", imgurl);
                    vholder.like.toggleFlip();
                    new AsyncHttpClient().post("php script url to unlike",rp,new AsyncHttpResponseHandler(){
                        @Override
                        public void onFailure(int code,Throwable t,String err)
                        {
                            Toast.makeText(getActivity(), "Something went wrong..Please try again", Toast.LENGTH_SHORT).show();
                            Log.d("onError unlike", err);
                            vholder.like.toggleFlip();
                        }
                        @Override
                        public void onSuccess(String response)
                        {
                            response = response.trim();
                            Log.d("unlike", response);
                            if(!response.equals("unliked"))
                                {
                                 Toast.makeText(getActivity(), "Something went wrong..Please try again", Toast.LENGTH_SHORT).show();
                                 vholder.like.toggleFlip();
                                }
                            else
                                { 
                                 likes.remove(imgurl);
                                 post.decrementLikes();
                                 vholder.likesnum.setText(post.getLikes()+"");
                                }
                        }
                    });
                  }
            }
        });
        vu.setTag(vholder);
      }
      else
      vholder = (ViewHolder) vu.getTag();

        vholder.handle.setText(posts.get(pos).getHandle());
        vholder.caption.setText(posts.get(pos).getCaption());
        vholder.likesnum.setText(posts.get(pos).getLikes()+"");
        vholder.comnum.setText(posts.get(pos).getComments()+"");
        vholder.uploadtime.setText(posts.get(pos).getUl());
        Glide.with(getActivity()).load("photo to load").into(vholder.photo);
        RequestParams rpdp = new RequestParams();
        Log.d("FEED POSTADAPTER load dp handle", han);
        rpdp.add("handle",han);
        new AsyncHttpClient().post("url to get DP of user", rpdp, new AsyncHttpResponseHandler(){
            @Override
            public void onSuccess(String response)
            { 
              response = response.trim();
              Log.d("getdpurl",finalpos+response);
              if(response.contains("http"))
                  Glide.with(getActivity()).load(response).into(vholder.feeddp);
              else
                  Glide.with(getActivity()).load("url of the dp").into(vholder.feeddp);
            }
            @Override
            public void onFailure(int err,Throwable error,String response)
            {
              Log.d("Feed POSTADAPTER getdpurl", response);
            }
        });

        RequestParams rpliked = new RequestParams();
        rpliked.add("handle", handle);
        rpliked.add("url",imgurl);
        new AsyncHttpClient().post("php script to check if a photo is likes", rpliked, new AsyncHttpResponseHandler(){
            @Override
            public void onSuccess(String response)
            { 
              response = response.trim();
              Log.d("FEED POSTADAPTER isliked", response);
              if(response.equals("islikedyes"))
              { //TODO set the hook-like
                likes.add(imgurl);
                vholder.like.setFlipped(true, false);
              }
            }
            @Override
            public void onFailure(int err,Throwable error,String response)
            {
             Log.d("Feed POSTADAPTER isliked", response);
             //Toast.makeText(getActivity(), response, Toast.LENGTH_SHORT).show();  
            }
        });

            return vu;
    }

    @Override
    public boolean isEnabled(int position)
    {
        return true;
    }
}

ListView每个项目

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<FrameLayout android:id="@+id/dpsmall"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginLeft="2dp">
<ImageView
    android:id="@+id/realdp"
    android:layout_width="30dp"
    android:layout_height="30dp"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:scaleType="centerCrop"
    android:adjustViewBounds="true"/>
<ImageView
    android:id="@+id/trans"
    android:layout_width="30dp"
    android:layout_height="30dp"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:scaleType="fitXY"
    android:adjustViewBounds="true"
    android:src="@drawable/framedo" />
</FrameLayout>

<TextView
    android:id="@+id/handle"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_toRightOf="@+id/dpsmall"
    android:text="handle"
    android:layout_marginLeft="3dp"
    android:gravity="center_vertical"
    android:layout_alignTop="@+id/dpsmall"
    android:layout_alignBottom="@+id/dpsmall"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<TextView
    android:id="@+id/uploadtime"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBaseline="@+id/handle"
    android:layout_marginRight="5dp"
    android:layout_alignParentRight="true"
    android:text="time"
    android:textAppearance="?android:attr/textAppearanceSmall" />    
<RelativeLayout android:id="@+id/rlimg"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:layout_below="@+id/handle"
  android:layout_marginTop="5dp"
  android:layout_marginBottom="5dp"
  >
<ImageView
    android:id="@+id/imgpost"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:scaleType="fitXY"
    android:adjustViewBounds="true"
    android:background="#ffffff"
    android:layout_marginTop="7dp"
     />

</RelativeLayout>
<com.sivaram.fishograph.FlipImageView
    xmlns:fiv="http://schemas.android.com/apk/res-auto"
    android:id="@+id/like"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/rlimg"
    android:background="#00000000"
    android:layout_marginLeft="40dp"
    android:src="@drawable/hook_unlike"/>

<ImageButton
    android:id="@+id/comment"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/rlimg"
    android:background="#00000000"
    android:layout_toRightOf="@+id/likesnum"
    android:layout_marginLeft="5dp"
    android:src="@drawable/comment" />
<ImageButton
    android:id="@+id/more"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/rlimg"
    android:layout_marginRight="3dp"
    android:layout_alignParentRight="true"
    android:background="#00000000"
    android:src="@drawable/more" />

<TextView
    android:id="@+id/likesnum"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBottom="@+id/like"
    android:layout_alignTop="@+id/like"
    android:layout_marginLeft="2dp"
    android:layout_toRightOf="@+id/like"
    android:text="likes"
    android:gravity="center_vertical"
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:textColor="#440011" />

<TextView
    android:id="@+id/comnum"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBottom="@+id/comment"
    android:layout_alignTop="@+id/comment"
    android:layout_marginLeft="2dp"
    android:layout_toRightOf="@+id/comment"
    android:gravity="center_vertical"
    android:text="comments"
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:textColor="#440011" />

<TextView
    android:id="@+id/caption"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/rlimg"
    android:layout_below="@+id/like"
    android:layout_marginTop="10dp"
    android:paddingLeft="5dp"
    android:paddingRight="5dp"
    android:layout_marginBottom="20dp"
    android:gravity="center"
    android:text="Caption"
    android:textAppearance="?android:attr/textAppearanceMedium" />
</RelativeLayout>

ListView本身

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:clickable="false"
android:descendantFocusability="blocksDescendants"
android:focusable="false"
android:focusableInTouchMode="false" >

<ListView
    android:id="@+id/lvposts"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:divider="#55ea4f5f"
    android:listSelector="#00000000"
    android:clickable="false"
    android:smoothScrollbar="true"
    android:scrollingCache="false"
    android:animationCache="false" >
</ListView>
</LinearLayout>

Answer 1

我会删除所有这些最终声明。正如您将使用第一项的值填充它们：

final eachpost post = posts.get(pos);
final int finalpos = pos;
final String han = post.getHandle();
final String imgurl = post.getDpbase64()

要：

eachpost post = posts.get(pos);
int finalpos = pos;
String han = post.getHandle();
String imgurl = post.getDpbase64()

你应该看到Log.d("getdpurl",finalpos+response);当你这样做时的变化。如果这不能解决您的问题，请告诉我。

网上有很多相关信息......这里有一个

Can i change value of final int

Listview奇怪的反应点击

1 个答案: