我有一个评论系统,允许通过imgur添加文本和上传图片。 当我显示评论时,图片显示两次,我不明白为什么。
这是代码的一部分:
public class ReviewListAdapter extends BaseAdapter {
...
public View getView(int position, View convertView, ViewGroup parent) {
....
ViewHolder holder;
if (convertView == null) {
convertView = inflater.inflate(R.layout.list_item, null);
holder = new ViewHolder(convertView);
} else {
holder = (ViewHolder) convertView.getTag();
}
...
if (text != null) {
int begin = text.indexOf("[img]");
int end = text.indexOf("[/img]");
if (begin != -1 && end!=-1 && begin<end) {
String imgUrl = text.subSequence(begin + 5, end).toString();
imgUrl = imgUrl.substring(0,imgUrl.length()-4)+"m"+imgUrl.substring(imgUrl.length()-4, imgUrl.length());
Log.e("IMG", imgUrl); // imgUrl == http://i.imgur.com/AL4Em6cm.jpg
startSignal = new CountDownLatch(1);
new GetImage().execute(imgUrl);
try {
startSignal.await();
} catch (InterruptedException e) {
e.printStackTrace();
}
// We should have the picture in the Drawable : myPicture
SpannableStringBuilder ssb = new SpannableStringBuilder(text);
Bitmap pic = Utils.drawableToBitmap(myPicture);
ssb.setSpan(new ImageSpan(pic), begin, end + 6, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
holder.textView.setText(ssb, BufferType.SPANNABLE);
}else{
holder.textView.setText(text);
}
}
我还把私有类GetImage(在同一个文件中)
private class GetImage extends AsyncTask<String, Void, Void> {
@Override
protected Void doInBackground(String... params) {
URL url;
boolean isPicture = false;
try {
if (!params[0].equals(""))
isPicture = true;
if (isPicture)
url = new URL(params[0]);
else
url = new URL(icon);
Bitmap mIcon1 = BitmapFactory.decodeStream(url.openConnection().getInputStream());
if (isPicture)
myPicture = new BitmapDrawable(ctx.getResources(), mIcon1);
else
myIcon = new BitmapDrawable(ctx.getResources(), mIcon1);
startSignal.countDown();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}
我的列表布局(list_item.xml)
<?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="match_parent" >
<LinearLayout
android:id="@+id/ll1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<ImageView
android:id="@+id/icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:layout_marginRight="5dp"
android:contentDescription="thumb"/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:layout_marginTop="5dp"
android:id="@+id/author_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textStyle="bold" />
<TextView
android:id="@+id/time"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/author_name"
android:layout_gravity="center"
android:paddingRight="8dp"
android:textSize="12sp" />
</RelativeLayout>
</LinearLayout>
<TextView
android:id="@+id/texto"
android:layout_below="@id/ll1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingBottom="5dp"
android:paddingTop="5dp"
/>
</RelativeLayout>
我的图片作为spannable内容插入textview
答案 0 :(得分:0)
我遇到了类似的问题。 ImageSpan在特定条件下显示两次。 Here is the link to my question。我发现如果setBound比某个宽度宽,图片会显示两次。虽然您的代码不涉及setBound调用。
答案 1 :(得分:0)
旧问题和适当位置的API,但对于发生此问题的其他任何人:可以通过仅使用start+1
的结束范围,然后删除文本其余部分的范围来完全解决这种奇怪的行为:
span.setSpan(ImageSpan(context, drawable), start, start+1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE)
span.delete(start+1, end)