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1

When I use the Adapter of a RecyclerView to create ViewHolder, the view is just a TextView, so I don't want use LayoutInflate.inflate() with a layout.xml file. Therefore I create a TextView instance via constructor, but the TextView shows nothing. Now I want know if there is a way to solve this？

1. I write parent.addView(textview) before return, but it crashed.


2. When I write a layout.xml and use
   LayoutInflate.from().inflate(), it works well.

 @Override
 public GeekSearchWordItemAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) 
 TextView textView = new TextView(mActivity);
 textView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, R.dimen.text_size_medium);
 textView.setTextColor(ContextCompat.getColor(mActivity, R.color.text_c6));
 return new ViewHolder(textView);
 
 ...
 @Override
 public void onBindViewHolder(@NonNull GeekSearchWordItemAdapter.ViewHolder holder, int position) 
 LevelBean bean = LList.getElement(mDatas, position);
 if (bean != null) 
 holder.mTxtName.setText(bean.name);
 
 
 ...
 static class ViewHolder extends RecyclerView.ViewHolder 
 private TextView mTxtName;

 public ViewHolder(View itemView) 
 super(itemView);
 mTxtName = (TextView) itemView;
 
 

android android-recyclerview android-viewholder

share|improve this question

edited Mar 27 at 14:32

Haroun Hajem

1,06011 gold badge99 silver badges1919 bronze badges

asked Mar 27 at 12:02

li_userli_user

855 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  are you sure that bean != null?
  
  – pskink
  Mar 27 at 12:03
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Don't you have to explicit return GeekSearchWordItemAdapter.ViewHolder ?
  
  – Haroun Hajem
  Mar 27 at 13:41
  

  
  
  
  

add a comment | 

1

When I use the Adapter of a RecyclerView to create ViewHolder, the view is just a TextView, so I don't want use LayoutInflate.inflate() with a layout.xml file. Therefore I create a TextView instance via constructor, but the TextView shows nothing. Now I want know if there is a way to solve this？

1. I write parent.addView(textview) before return, but it crashed.


2. When I write a layout.xml and use
   LayoutInflate.from().inflate(), it works well.

 @Override
 public GeekSearchWordItemAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) 
 TextView textView = new TextView(mActivity);
 textView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, R.dimen.text_size_medium);
 textView.setTextColor(ContextCompat.getColor(mActivity, R.color.text_c6));
 return new ViewHolder(textView);
 
 ...
 @Override
 public void onBindViewHolder(@NonNull GeekSearchWordItemAdapter.ViewHolder holder, int position) 
 LevelBean bean = LList.getElement(mDatas, position);
 if (bean != null) 
 holder.mTxtName.setText(bean.name);
 
 
 ...
 static class ViewHolder extends RecyclerView.ViewHolder 
 private TextView mTxtName;

 public ViewHolder(View itemView) 
 super(itemView);
 mTxtName = (TextView) itemView;
 
 

android android-recyclerview android-viewholder

share|improve this question

edited Mar 27 at 14:32

Haroun Hajem

1,06011 gold badge99 silver badges1919 bronze badges

asked Mar 27 at 12:02

li_userli_user

855 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  are you sure that bean != null?
  
  – pskink
  Mar 27 at 12:03
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Don't you have to explicit return GeekSearchWordItemAdapter.ViewHolder ?
  
  – Haroun Hajem
  Mar 27 at 13:41
  

  
  
  
  

add a comment | 

When I use the Adapter of a RecyclerView to create ViewHolder, the view is just a TextView, so I don't want use LayoutInflate.inflate() with a layout.xml file. Therefore I create a TextView instance via constructor, but the TextView shows nothing. Now I want know if there is a way to solve this？

1. I write parent.addView(textview) before return, but it crashed.


2. When I write a layout.xml and use
   LayoutInflate.from().inflate(), it works well.

 @Override
 public GeekSearchWordItemAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) 
 TextView textView = new TextView(mActivity);
 textView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, R.dimen.text_size_medium);
 textView.setTextColor(ContextCompat.getColor(mActivity, R.color.text_c6));
 return new ViewHolder(textView);
 
 ...
 @Override
 public void onBindViewHolder(@NonNull GeekSearchWordItemAdapter.ViewHolder holder, int position) 
 LevelBean bean = LList.getElement(mDatas, position);
 if (bean != null) 
 holder.mTxtName.setText(bean.name);
 
 
 ...
 static class ViewHolder extends RecyclerView.ViewHolder 
 private TextView mTxtName;

 public ViewHolder(View itemView) 
 super(itemView);
 mTxtName = (TextView) itemView;
 
 

android android-recyclerview android-viewholder

share|improve this question

edited Mar 27 at 14:32

Haroun Hajem

1,06011 gold badge99 silver badges1919 bronze badges

asked Mar 27 at 12:02

li_userli_user

855 bronze badges

 @Override
 public GeekSearchWordItemAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) 
 TextView textView = new TextView(mActivity);
 textView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, R.dimen.text_size_medium);
 textView.setTextColor(ContextCompat.getColor(mActivity, R.color.text_c6));
 return new ViewHolder(textView);
 
 ...
 @Override
 public void onBindViewHolder(@NonNull GeekSearchWordItemAdapter.ViewHolder holder, int position) 
 LevelBean bean = LList.getElement(mDatas, position);
 if (bean != null) 
 holder.mTxtName.setText(bean.name);
 
 
 ...
 static class ViewHolder extends RecyclerView.ViewHolder 
 private TextView mTxtName;

 public ViewHolder(View itemView) 
 super(itemView);
 mTxtName = (TextView) itemView;
 
 

android android-recyclerview android-viewholder

android android-recyclerview android-viewholder

share|improve this question

edited Mar 27 at 14:32

Haroun Hajem

1,06011 gold badge99 silver badges1919 bronze badges

asked Mar 27 at 12:02

li_userli_user

855 bronze badges

share|improve this question

edited Mar 27 at 14:32

Haroun Hajem

1,06011 gold badge99 silver badges1919 bronze badges

asked Mar 27 at 12:02

li_userli_user

855 bronze badges

edited Mar 27 at 14:32

Haroun Hajem

1,06011 gold badge99 silver badges1919 bronze badges

edited Mar 27 at 14:32

Haroun Hajem

1,06011 gold badge99 silver badges1919 bronze badges

asked Mar 27 at 12:02

li_userli_user

855 bronze badges

asked Mar 27 at 12:02

li_userli_user

855 bronze badges

1 Answer
1

active

oldest

votes

0

In onCreateViewHolder() try to add layout params to the TextView you creates there.

RecyclerView.LayoutParams params = new RecyclerView.LayoutParams(
 RecyclerView.LayoutParams.WRAP_CONTENT, RecyclerView.LayoutParams.WRAP_CONTENT);
textView.setLayoutParams(params);

share|improve this answer

answered Mar 27 at 12:35

AlexeyAlexey

3,13911 gold badge2020 silver badges2727 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  no, it didn't work... I've tried...
  
  – li_user
  Mar 28 at 11:42
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Add your xml file to the question, please.
  
  – Alexey
  Mar 31 at 10:43
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  And as psknik wrote, debug and check bean for null.
  
  – Alexey
  Mar 31 at 10:44
  

  
  
  
  

add a comment | 

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0

In onCreateViewHolder() try to add layout params to the TextView you creates there.

RecyclerView.LayoutParams params = new RecyclerView.LayoutParams(
 RecyclerView.LayoutParams.WRAP_CONTENT, RecyclerView.LayoutParams.WRAP_CONTENT);
textView.setLayoutParams(params);

share|improve this answer

answered Mar 27 at 12:35

AlexeyAlexey

3,13911 gold badge2020 silver badges2727 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  no, it didn't work... I've tried...
  
  – li_user
  Mar 28 at 11:42
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Add your xml file to the question, please.
  
  – Alexey
  Mar 31 at 10:43
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  And as psknik wrote, debug and check bean for null.
  
  – Alexey
  Mar 31 at 10:44
  

  
  
  
  

add a comment | 

0

In onCreateViewHolder() try to add layout params to the TextView you creates there.

RecyclerView.LayoutParams params = new RecyclerView.LayoutParams(
 RecyclerView.LayoutParams.WRAP_CONTENT, RecyclerView.LayoutParams.WRAP_CONTENT);
textView.setLayoutParams(params);

share|improve this answer

answered Mar 27 at 12:35

AlexeyAlexey

3,13911 gold badge2020 silver badges2727 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  no, it didn't work... I've tried...
  
  – li_user
  Mar 28 at 11:42
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Add your xml file to the question, please.
  
  – Alexey
  Mar 31 at 10:43
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  And as psknik wrote, debug and check bean for null.
  
  – Alexey
  Mar 31 at 10:44
  

  
  
  
  

add a comment | 

In onCreateViewHolder() try to add layout params to the TextView you creates there.

RecyclerView.LayoutParams params = new RecyclerView.LayoutParams(
 RecyclerView.LayoutParams.WRAP_CONTENT, RecyclerView.LayoutParams.WRAP_CONTENT);
textView.setLayoutParams(params);

share|improve this answer

answered Mar 27 at 12:35

AlexeyAlexey

3,13911 gold badge2020 silver badges2727 bronze badges

RecyclerView.LayoutParams params = new RecyclerView.LayoutParams(
 RecyclerView.LayoutParams.WRAP_CONTENT, RecyclerView.LayoutParams.WRAP_CONTENT);
textView.setLayoutParams(params);

share|improve this answer

answered Mar 27 at 12:35

AlexeyAlexey

3,13911 gold badge2020 silver badges2727 bronze badges

answered Mar 27 at 12:35

AlexeyAlexey

3,13911 gold badge2020 silver badges2727 bronze badges

answered Mar 27 at 12:35

AlexeyAlexey

3,13911 gold badge2020 silver badges2727 bronze badges