OnItemClickListener Not Triggered on Android GridV

2020-01-29 05:36发布

I have a Gridview filled by an Adapter which returns LinearLayouts each contains an ImageButton and TextView.

In the adapter I am binding an onClick and onLongClick event to the ImageButton.

I am trying to bind OnItemClickListener to the gridview but I don't know why that the onItemclicked never fired up.

It's my 6th hour without anything.

By the way; OnItemSelectListener working perfectly on the Grid.

I am checking if some piece of code accidentally handles the onItemClicked but couldn't catch yet.

I need help guys.

gridView = (GridView) layoutInflater.inflate(R.layout.gridview, null);
gridView.setOnItemClickListener(new ItemClickListener());
. 
.
.

//inner handler class
class ItemClickListener implements AdapterView.OnItemClickListener {
    @Override
    public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
        Toast.makeText(mainActivity.getApplicationContext(),view + " clicked at pos " +            
        i,Toast.LENGTH_SHORT).show();
    }
}

6条回答
够拽才男人
2楼-- · 2020-01-29 05:37

Hey guyz finally got a solution...

what we were doing is directly accessing the Layout inside the GridView, so the onItemClickListener finds it confusing to access the item.

So the solution is to apply the onClickListener inside the Adapter (i.e. normally ArrayAdapter)

so what i m trying to say is:

public View getView(int position, View convertView, ViewGroup parent) {

            //Here row is a view and we can set OnClickListener on this
    final View row;
    ViewHolder holder = null;

    if (convertView == null) {
        LayoutInflater inflater = ((Activity) context).getLayoutInflater();
        //Here we inflate the layout to view (linear in my case)
        row = inflater.inflate(layoutResourceId, parent, false);
        holder = new ViewHolder();
        holder.imageTitle = (TextView) row.findViewById(R.id.text);
        holder.image = (ImageView) row.findViewById(R.id.image);
        row.setTag(holder);
    } else {
        row = convertView;
        holder = (ViewHolder) row.getTag();
    }

    ImageItem item = data.get(position);
    holder.imageTitle.setText(item.getTitle());
    holder.image.setImageBitmap(item.getImage());

    //Now get the id or whatever needed
    row.setId(position);
    // Now set the onClickListener
    row.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            Toast.makeText(context, "Clicked" + row.getId() + "!!",
                    Toast.LENGTH_SHORT).show();
        }
    });
    return row;
}
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唯我独甜
3楼-- · 2020-01-29 05:39

I meet same problem too, because of several reasons. So, here's my tips:

  1. Extend BaseAdapter for your adapter;
  2. Use OnClickListener inside the getView in adapter instead setting OnItemClickListener for GridView;
  3. Avoid setting LayoutParams multiple times;
  4. Check if position = 0, don't use convertView, inflate new View;
  5. Set OnClickListener not only for parent View, but for any child View, if any;
  6. Make all your Views clickable.

I just tested it on 4 devices, and this solution works as expected. Hope, it will help in your case. Correct me, if I made something wrong.

Layout code XML:

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="100dp"
    android:layout_height="100dp"
    android:background="#273238"
    android:clickable="true"
    android:focusable="true"
    android:focusableInTouchMode="true"
    android:padding="1dp">

<ImageView
    android:id="@+id/open_image_item_imageview"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:src="@drawable/loh"
    android:clickable="true"
    android:focusable="false"
    android:focusableInTouchMode="false"
    android:scaleType="centerCrop"/>
<TextView
    android:id="@+id/open_image_item_textview"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:clickable="true"
    android:focusable="false"
    android:focusableInTouchMode="false"
    android:layout_gravity="bottom"
    android:padding="4dp"
    android:textSize="10sp"
    android:ellipsize="start"
    android:background="#55000000"
    android:textColor="#FFFFFF"
    android:text="image name"/>

</FrameLayout>

Adapter code Java:

 @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        View view = null;
        if(convertView != null && position != 0)
            view = convertView;
        else{
            view = LayoutInflater.from(getContext()).inflate(R.layout.open_image_item_layout, null, false);
            view.setLayoutParams(new GridView.LayoutParams(GridView.AUTO_FIT, size));
        }

        TextView textView = (TextView)view.findViewById(R.id.open_image_item_textview);
        ImageView imageView = (ImageView)view.findViewById(R.id.open_image_item_imageview);

        ...

        View.OnClickListener onClickListener = getOnClickListener(files[position]);
        view.setOnClickListener(onClickListener);
        textView.setOnClickListener(onClickListener);
        imageView.setOnClickListener(onClickListener);

        return view;
    }
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Fickle 薄情
4楼-- · 2020-01-29 05:44

If you wants to use Button or ImageButton then you need to write these attributes in your xml code of the widgets.

android:focusable="false"
android:focusableInTouchMode="false"

Its works for me.

But in GridView, Try to avoid use of these widgets. You can use any other widgets in place of these (Like ImageView or any other).

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forever°为你锁心
5楼-- · 2020-01-29 05:53

Also make sure, that your ListAdpter returns true for

public boolean isEnabled(int _position)

for the position you want to click.

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爷、活的狠高调
6楼-- · 2020-01-29 05:58

Do not use clickable objects in the grid. In that case Android cannot handle the click event of GridView.

Instead, use something to show a similar user interface view. Then handle that object's click actions.

Don't: put Button in the GridView to perform some click actions.

Do: put an ImageView instead of ImageButton and handle ImageView's click events.

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7楼-- · 2020-01-29 06:03

Try to set

    android:clickable="false"
    android:focusable="false"
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