我遇到了问题，当我试图查看以下片段时，显示＆＃34;跳过布局＆＃34;。任何人都可以帮我解决这个问题。 我得到了这个＆＃34;没有附加适配器;跳过布局。＆＃34;当我在ThirdFragment UI ayout上点击任何图像视图时，而不是在图像显示在Thirdfragment UI布局中时。
ThirdFrament.java
public class ThirdFragment extends Fragment implements RecyclerViewAdapter.ItemListener {
static final String url = "https://jsonparsingdemo-cec5b.firebaseapp.com/jsonData/moviesData.txt" ;
RecyclerView recyclerView;
RecyclerViewAdapter adapter;
AutoFitGridLayoutManager layoutManager;
private static List<JsonURLFullModel> cart;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView= inflater.inflate(R.layout.fragment_third, container, false);
recyclerView = (RecyclerView) rootView.findViewById(R.id.recyclerView);
new JSONTask().execute(url, this);
// Inflate the layout for this fragment
return rootView;
}
public class JSONTask extends AsyncTask<Object, String, ThirdFragModel> {
// Url , , return_value_of_doInBackground
//private ProgressDialog dialog;
@Override
protected void onPreExecute() {
super.onPreExecute();
//dialog.show(); // this is for ProgressDialog
}
@Override
protected ThirdFragModel doInBackground(Object... params) {
//send and receive data over the web
// can be used to send and receive "streaming" data whose length is not
// known in advance
HttpURLConnection connection = null;
BufferedReader reader = null;
try {
URL url = new URL(params[0].toString());
RecyclerViewAdapter.ItemListener itemListener = (RecyclerViewAdapter.ItemListener) params[1];
connection = (HttpURLConnection) url.openConnection();
connection.connect();
InputStream stream = connection.getInputStream(); // this is used to store
// the response, response is always stream
reader = new BufferedReader(new InputStreamReader(stream));
// BufferedReader reads the stream line by line and then store in the reader
StringBuffer buffer = new StringBuffer();
String line = "";
while ((line = reader.readLine()) != null) {
buffer.append(line);
}
String finalJson = buffer.toString(); // this contails whole JSON data from the URL
JSONObject parentObject = new JSONObject(finalJson);
JSONArray parentArray = parentObject.getJSONArray("movies"); // "movies" is the JSON Array-object in JSON data URL
List<JsonURLFullModel> movieModelList = new ArrayList<>();
//StringBuffer finalBufferedaData = new StringBuffer();
for (int i = 0; i < parentArray.length(); i++) {
JSONObject finalObject = parentArray.getJSONObject(i); // getting first json object from JSON ARRAY "movies"
JsonURLFullModel movieModel = new JsonURLFullModel();
movieModel.setMovie(finalObject.getString("movie"));
movieModel.setImage(finalObject.getString("image"));
movieModelList.add(movieModel); // adding the final object in list
//finalBufferedaData.append(movieName +"-"+ year +"\n");
}
ThirdFragModel thirdFragModel= new ThirdFragModel(itemListener,movieModelList);
return thirdFragModel;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
} finally {
if (connection != null)
connection.disconnect();
try {
if (reader != null)
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
@Override
protected void onPostExecute(ThirdFragModel result) {
super.onPostExecute(result);
//jsonfull.setText(result);
//dialog.dismiss(); // closing dialog, before the content load in ListView(i.e until application lodading it will run, then dialog closes)
adapter = new RecyclerViewAdapter(getActivity(), result.getMovieModelList(), result.getItemListener());
/**
AutoFitGridLayoutManager that auto fits the cells by the column width defined.
**/
layoutManager = new AutoFitGridLayoutManager(getActivity(), 500);
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAdapter(adapter);
/**
Simple GridLayoutManager that spans two columns
**/
/*GridLayoutManager manager = new GridLayoutManager(this, 2, GridLayoutManager.VERTICAL, false);
recyclerView.setLayoutManager(manager);*/
//AnimationUtils.animate(jsonFullL1, true);
}
}
public void moveToLoginActivity() {
Intent intent = new Intent(getActivity(), LoginActivity.class);
startActivity(intent);
}
@Override
public void onItemClick(int mPosition,List<JsonURLFullModel> mValues ) {
Log.d("Fragposition",mPosition+":"+mValues);
Toast.makeText(getActivity(), mValues.get(mPosition).getMovie() + " is clicked", Toast.LENGTH_SHORT).show();
//Intent intent = new Intent(getActivity(), FullScreenViewActivity.class);
Intent intent = new Intent(getActivity(), FullScreenViewInitialActivity.class);
intent.putExtra("position", mPosition);
intent.putExtra("values", (Serializable) mValues);
startActivity(intent);
}
public static List<JsonURLFullModel> getCart() {
if(cart == null) {
cart = new Vector<JsonURLFullModel>();
}
return cart;
}
}
这是我在ThirdFragment类中使用的适配器类，如上所示
RecyclerViewAdapter.java
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> {
static List<JsonURLFullModel> mValues;
Context mContext;
private ItemListener mListener;
static int mPosition;
public RecyclerViewAdapter(Context context, List<JsonURLFullModel> values, ItemListener itemListener) {
mValues = values;
mContext = context;
mListener=itemListener;
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public TextView textView;
public ImageView imageView;
public RelativeLayout relativeLayout;
JsonURLFullModel item;
public ViewHolder(View v) {
super(v);
v.setOnClickListener(this);
textView = (TextView) v.findViewById(R.id.textView1);
imageView = (ImageView) v.findViewById(R.id.imageView1);
relativeLayout = (RelativeLayout) v.findViewById(R.id.relativeLayout);
}
public void setData(final JsonURLFullModel item) {
this.item = item;
Log.d("INFO",item.getImage());
//https://futurestud.io/tutorials/picasso-image-resizing-scaling-and-fit
Picasso.with(mContext)
.load(item.getImage())
.error(R.drawable.ferrari)
.noPlaceholder()
.noFade()
.fit()
.into(imageView, new com.squareup.picasso.Callback() {
@Override
public void onSuccess() {
//Success image already loaded into the view
Log.d("INFO","success");
}
@Override
public void onError() {
//Error placeholder image already loaded into the view, do further handling of this situation here
Log.d("INFO","error");
}
});
/*imageView.post(new Runnable() {
@Override
public void run(){
Glide.with(mContext).load(item.getImage()).asBitmap().override(1080, 600).into(imageView);
}
});*/
textView.setText(item.getMovie());
}
@Override
public void onClick(View view) {
if (mListener != null) {
mListener.onItemClick(getAdapterPosition(),mValues); // this.getPosition() is depricated
// in API 22 and we got getAdapterPosition()
}
}
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(mContext).inflate(R.layout.recycler_view_item, parent, false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(ViewHolder Vholder, int position) {
Vholder.setData(mValues.get(position));
mPosition=position;
}
@Override
public int getItemCount() {
return mValues.size();
}
//Below interface implimentation can be found in ThirdFragment
// you can write below interface separetly or in you can write in this class like below
public interface ItemListener {
void onItemClick(int mPosition, List<JsonURLFullModel> mValues);
}
}
FullScreenViewInitialActivity.java
public class FullScreenViewInitialActivity extends FragmentActivity {
ImageFragmentPagerAdapter imageFragmentPagerAdapter;
ViewPager viewPager;
static ArrayList<JsonURLFullModel> mValues;
static int position;
Button addToBagButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fullscreen_view_initial);
addToBagButton = (Button) findViewById(R.id.b_add_to_bag);
Intent i = getIntent();
position=i.getIntExtra("position",0);
Log.d("Acposition",""+position);
mValues = (ArrayList<JsonURLFullModel>) getIntent().getSerializableExtra("values");
imageFragmentPagerAdapter = new ImageFragmentPagerAdapter(getSupportFragmentManager());
viewPager = (ViewPager) findViewById(R.id.intial_pager);
viewPager.setAdapter(imageFragmentPagerAdapter);
viewPager.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
}
});
CircleIndicator circleIndicator = (CircleIndicator) findViewById(R.id.imageIndicator);
circleIndicator.setViewPager(viewPager);
/*viewPager.setOnClickListener(new View.OnClickListener(){
public void onClick(View v){
Intent intent = new Intent(FullScreenViewInitialActivity.this, FullScreenViewActivity.class);
intent.putExtra("position", position);
intent.putExtra("values", (Serializable) mValues);
startActivity(intent);
}
});*/
final List<JsonURLFullModel> cart = ThirdFragment.getCart();
final JsonURLFullModel selectedProduct = mValues.get(position);
addToBagButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
cart.add(selectedProduct);
Log.d("cart",""+cart.size());
//finish();
Button b_add_to_bag = (Button) findViewById(R.id.b_add_to_bag);
b_add_to_bag.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent reviewOrderIntent = new Intent(FullScreenViewInitialActivity.this, FullScreenViewReviewActivity.class);
startActivity(reviewOrderIntent);
}
});
}
});
if(cart.contains(selectedProduct)) {
addToBagButton.setEnabled(false);
addToBagButton.setText("Item in Cart");
}
}
public static class ImageFragmentPagerAdapter extends FragmentPagerAdapter {
public ImageFragmentPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public int getCount() {
return mValues.size();
}
@Override
public Fragment getItem(int position) {
SwipeFragment fragment = new SwipeFragment();
return SwipeFragment.newInstance(position);
}
}
public static class SwipeFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View swipeView = inflater.inflate(R.layout.swipe_fragment, container, false);
ImageView imageView = (ImageView) swipeView.findViewById(R.id.imageView);
/*Bundle bundle = getArguments();
int position = bundle.getInt("position");*/
//JsonURLFullModel imageFileName = mValues.get(position);
try {
BitmapFactory.Options options = new BitmapFactory.Options();
/*options.inJustDecodeBounds = true;
options.inPreferredConfig = Bitmap.Config.ARGB_8888;*/
URL url = new URL(mValues.get(position).getImage());
Log.d("position",""+position);
Bitmap bitmap = BitmapFactory.decodeStream(url.openConnection().getInputStream(),null, options);
if (bitmap != null)
imageView.setImageBitmap(bitmap);
else
System.out.println("The Bitmap is NULL");
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
imageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(getActivity(), mValues.get(position).getMovie(), Toast.LENGTH_SHORT).show();
}
});
return swipeView;
}
static SwipeFragment newInstance(int position) {
SwipeFragment swipeFragment = new SwipeFragment();
Bundle bundle = new Bundle();
bundle.putInt("position", position);
swipeFragment.setArguments(bundle);
return swipeFragment;
}
}
}
third_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:fitsSystemWindows="true"
tools:context=".MainActivity">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical"
/>
<!--removed from recycler view
app:layout_behavior="@string/appbar_scrolling_view_behavior"-->
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>
recycler_view_item.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<android.support.v7.widget.CardView
android:id="@+id/cardView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/colorAccent"
card_view:cardCornerRadius="@dimen/margin10"
card_view:cardElevation="@dimen/margin10"
card_view:cardMaxElevation="@dimen/margin10"
card_view:contentPadding="@dimen/margin10"
card_view:cardPreventCornerOverlap="false"
android:layout_marginStart="10dp"
android:layout_marginEnd="10dp">
<RelativeLayout
android:id="@+id/relativeLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_gravity="center">
<ImageView
android:id="@+id/imageView1"
android:layout_width="match_parent"
android:layout_height="150dp"
android:scaleType="fitXY"
android:padding="5dp"
android:layout_alignParentTop="true"/>
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:textColor="@color/colorPrimary"
android:layout_marginTop="10dp"
android:layout_below="@+id/imageView1" />
</RelativeLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
activity_fullscreen_view_initial
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:orientation="vertical">
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true"
android:layout_weight="1">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="@+id/cart_button_layout"
android:layout_alignParentTop="true"
android:orientation="vertical">
<android.support.v4.view.ViewPager
android:id="@+id/intial_pager"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
<me.relex.circleindicator.CircleIndicator
android:id="@+id/imageIndicator"
android:layout_width="match_parent"
android:layout_height="48dp"
android:layout_alignBottom="@+id/intial_pager"
android:layout_marginBottom="10dp" />
</LinearLayout>
</ScrollView>
<ScrollView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:fillViewport="true"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<include
layout="@layout/full_screen_size_picker"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
</ScrollView>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/cart_button_layout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:gravity="bottom"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:layout_alignParentBottom="true"
android:orientation="horizontal">
<Button
android:id="@+id/b_save"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="5dp"
android:layout_weight="1"
android:background="#D3D3D3"
android:text="save"
android:textColor="#000000" />
<Button
android:id="@+id/b_add_to_bag"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:layout_weight="1"
android:background="@color/colorPrimary"
android:text="add to bag"
android:textColor="#FFF" />
</LinearLayout>
</LinearLayout>
swipe_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/imageView"
android:layout_gravity="center_horizontal"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
</LinearLayout>
答案 0 :(得分：0)
在执行AsyncTask之前，尝试使用空适配器设置RecyclerView的设置。
View rootView= inflater.inflate(R.layout.fragment_third, container, false);
recyclerView = (RecyclerView) rootView.findViewById(R.id.recyclerView);
-->recyclerView.setAdapter(new RecyclerViewAdapter(getActivity(), new ArrayList<>(), null);
new JSONTask().execute(url, this);
然后在RecyclerViewAapter中创建一个方法来加载填充的列表<JsonURLFullModel＆gt;来自AsyncTask的onPostExecute。
public void loadJson(List<JsonURLFullModel> jsonList){
mValues = jsonList;
notifyDataSetChanged();
}
如果使用runOnUiThread尝试从Asynctask加载Ui线程不起作用
runOnUiThread(new Runnable() {
@Override
public void run() {
adapter.loadJson(...)
}
});
编辑1 将loadJson添加到RecyclerViewAapter.class
@Override
public int getItemCount() {
return mValues.size();
}
public void loadJson(List<JsonURLFullModel> jsonList){
mValues = jsonList;
notifyDataSetChanged();
}
//Below interface implimentation can be found in ThirdFragment
// you can write below interface separetly or in you can write in this class like below
public interface ItemListener {
void onItemClick(int mPosition, List<JsonURLFullModel> mValues);
}
在PostExecute中调用该方法
@Override
protected void onPostExecute(ThirdFragModel result) {
super.onPostExecute(result);
//jsonfull.setText(result);
//dialog.dismiss(); // closing dialog, before the content load in ListView(i.e until application lodading it will run, then dialog closes)
getActivity().runOnUiThread(new Runnable() {
@Override
public void run() {
adapter.loadJson(result.getMovieModelList());
}
});
}
还要在onCreateView
中添加RecyclerView的布局管理器 View rootView= inflater.inflate(R.layout.fragment_third, container, false);
recyclerView = (RecyclerView) rootView.findViewById(R.id.recyclerView);
-->recyclerView.setAdapter(new RecyclerViewAdapter(getActivity(), new ArrayList<>(), null);
layoutManager = new AutoFitGridLayoutManager(getActivity(), 500);
recyclerView.setLayoutManager(layoutManager);