我有一个片段在运行时获取数据,我认为导致问题的原因,但我不确定。
它显示按钮两次,我不能滚动。如果我在View v = inflater.inflate(R.layout.fragment_book_view, container, true);
它只显示按钮。
片段在运行时加载到活动的FrameLayout中,该布局假设每次都包含不同的片段。
我的片段代码: 的java:
package javaproject.project5776;
import android.app.AlertDialog;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import entities.Book;
import model.backend.Backend;
import model.backend.BackendFactory;
import util.ImageLoader;
/**
* A simple {@link Fragment} subclass.
*/
public class BookView extends Fragment {
private Bitmap bitmap;
private String name;
public static BookView newInstance(String book,Bitmap bitmap) {
Bundle args = new Bundle();
BookView fragment = new BookView();
fragment.bitmap = bitmap;
fragment.name = book;
fragment.setArguments(args);
return fragment;
}
public BookView() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.fragment_book_view, container, true);
Backend backend = BackendFactory.getInstance();
try {
Book b = backend.readBook(name);
((TextView)v.findViewById(R.id.bookView_name)).setText(b.getBookName());
((TextView)v.findViewById(R.id.bookView_author)).setText(b.getAuthor());
((TextView)v.findViewById(R.id.bookView_category)).setText(b.getCategory().name());
((TextView)v.findViewById(R.id.bookView_description)).setText(b.getDescription());
((TextView)v.findViewById(R.id.bookView_pages)).setText(Integer.toString(b.getPages()));
((TextView)v.findViewById(R.id.bookView_publishingDate)).setText(b.getPublishingDate());
final ImageView imageView = (ImageView)v.findViewById(R.id.bookView_image);
if(bitmap != null){
imageView.setImageBitmap(bitmap);
} else{
ImageLoader imageLoader = new ImageLoader();
imageLoader.setListener(new ImageLoader.ImageTaskListener() {
@Override
public void onActionEnd() {}
@Override
public void onImageDownload(Bitmap bitmap) {
imageView.setImageBitmap(bitmap);
}
});
imageLoader.execute(b.getImage());
}
}
catch (Exception e) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setMessage(e.getMessage());
builder.create().show();
}
return inflater.inflate(R.layout.fragment_book_view, container, false);
}
}
XML:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="5dp"
android:fillViewport="true">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:layout_width="@dimen/bookview.imageWidth"
android:layout_height="250dp"
android:id="@+id/bookView.image"/>
<TextView
android:textSize="@dimen/custom_book_text"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_toEndOf="@id/bookView.image"
android:id="@+id/bookView.name"/>
<TextView
android:textSize="@dimen/custom_book_text"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_toEndOf="@id/bookView.image"
android:layout_below="@id/bookView.name"
android:id="@+id/bookView.author"/>
<TextView
android:textSize="@dimen/custom_book_text"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_toEndOf="@id/bookView.image"
android:layout_below="@id/bookView.author"
android:id="@+id/bookView.pages"/>
<TextView
android:textSize="@dimen/custom_book_text"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_toEndOf="@id/bookView.image"
android:layout_below="@id/bookView.pages"
android:id="@+id/bookView.category"/>
<TextView
android:textSize="@dimen/custom_book_text"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_toEndOf="@id/bookView.image"
android:layout_below="@id/bookView.category"
android:id="@+id/bookView.publishingDate"/>
<TextView
android:id="@+id/bookView.description"
android:layout_width="match_parent"
android:layout_margin="10dp"
android:layout_height="wrap_content"
android:layout_below="@id/bookView.image"/>
<Button
android:background="@color/colorPrimary"
android:textColor="@android:color/white"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end"
android:layout_below="@id/bookView.description"
android:text="@string/bookView_button"/>
</RelativeLayout>
</ScrollView>
答案 0 :(得分:0)
尝试更改
return inflater.inflate(R.layout.fragment_book_view, container, false) ;
到
return v;
答案 1 :(得分:0)
将第一行第三个参数更改为false,并且正如Lauren.Liuling所说,将最后一行更改为return v;
。