如何在进入另一个活动之前重置 recyclerView 项目？

Question

I have a recyclerView. One of recyclerView. One of recyclerView items has an onClick method. In this method, I setVisibility for one Item to Visible(default is gone).

onClick :

public void onClickImageView(ImageView imageView) {
    imageView.setVisibility(View.VISIBLE);
}

Now My problem is : When i go to another activity and then come back to this activity, I want to the ImageView visibility be reset to default (gone) but it still visible.

Note : This may have happened in more than one row, I want all changed rows to be reset to default.

Note : I have used data binding

Answer 1

Any Activity that restarts has its onResume() method executed first. So, call notifyDataSetChanged() of RcyclerView from onResume()

@Override
public void onResume(){
    super.onResume();
    mAdapter.notifyDataSetChanged();

}
  

Answer 2

there's workaround you can try for this,

create a function in your activity

function void updateRecyclerView(position){
   yourArrayListForVisibility.set(position,'hide');
   mAdapter.notifyDataSetChanged();
}


@Override
public void onResume(){
    super.onResume();
    mAdapter.notifyDataSetChanged();

}

call this function in your adapter before intent and in your adapter check for this arraylist value to hide or show content, always set default value to 'yourArrayListForVisibility' for every position