Question

当我尝试单击列表中的项目时，它不会通过onItemClick方法。

GridViewAdapter.java

public class GridViewAdapter extends ArrayAdapter<ImageItem>{
    private Context context;
    private int layoutResourceId;
    private ArrayList<ImageItem> data = new ArrayList<ImageItem>();

    public GridViewAdapter(Context context, int layoutResourceId,
            ArrayList<ImageItem> data) {
        super(context, layoutResourceId, data);
        this.layoutResourceId = layoutResourceId;
        this.context = context;
        this.data = data;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View row = convertView;
        ViewHolder holder = null;

        if (row == null) {
            LayoutInflater inflater = ((Activity) context).getLayoutInflater();
            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 {
            holder = (ViewHolder) row.getTag();
        }

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

    static class ViewHolder {
        TextView imageTitle;
        ImageView image;
    }
}

MainActivity.java

public class MainActivity extends Activity {
    private GridView gridView;
    private GridViewAdapter customGridAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        gridView = (GridView) findViewById(R.id.gridView);
        customGridAdapter = new GridViewAdapter(this, R.layout.row_grid, getData());
        gridView.setAdapter(customGridAdapter);
        Log.d("yyoyoyoyo", "jhgvkbkhbjkhbj");
        gridView.setOnItemClickListener(new OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View v,
                    int position, long id) {
                Toast.makeText(MainActivity.this, position + "#Selected",
                        Toast.LENGTH_SHORT).show();
            }
        });
    }

    private ArrayList<ImageItem> getData() {
        final ArrayList<ImageItem> imageItems = new ArrayList<ImageItem>();
        // retrieve String drawable array
        TypedArray imgs = getResources().obtainTypedArray(R.array.image_ids);
        for (int i = 0; i < imgs.length(); i++) {
            Bitmap bitmap = BitmapFactory.decodeResource(this.getResources(),
                    imgs.getResourceId(i, -1));
            imageItems.add(new ImageItem(bitmap, "Image#" + i));
        }
        return imageItems;
    }

}

row_grid.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginTop="5dp"
    android:orientation="vertical"
    android:padding="5dp" 
    android:clickable="true"
    android:background="@drawable/grid_color_selector"
    android:focusable="false"
  android:focusableInTouchMode="false"
  android:descendantFocusability="blocksDescendants" 
  >

    <ImageView
        android:id="@+id/image"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:focusable="false"
  android:focusableInTouchMode="false"
        >
    </ImageView>

    <TextView
        android:id="@+id/text"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="5dp"
        android:gravity="center"
        android:textSize="12sp" 
        android:focusable="false" 
  android:focusableInTouchMode="false"
        >
    </TextView>

activity_main.xml中

<RelativeLayout 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"
    android:background="#f0f0f0"
    android:clickable="false"
android:descendantFocusability="blocksDescendants" 
    tools:context=".MainActivity" >

    <GridView
        android:id="@+id/gridView"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_margin="5dp"
        android:columnWidth="100dp"
        android:gravity="center"
        android:numColumns="auto_fit"
        android:verticalSpacing="5dp"
        android:drawSelectorOnTop="true"
        android:stretchMode="columnWidth" 
  android:descendantFocusability="blocksDescendants" 
        >
    </GridView>

</RelativeLayout>

我在StackOverFlow上尝试了大部分有关此主题的解决方案，但这些解决方案都不适用于我。此应用程序列出了所有图像，但是当您单击onItemClick时未触发。可能我的代码有问题。

谢谢！

Answer 1

删除 row_grid.xml 中的android:clickable="true"。并在 activity_main.xml

中添加android:clickable="true"

同时删除

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

由于row_grid.xml是可点击的，它会阻止网格的onclick侦听器响应。

setOnItemClickListener不适用于ArrayAdapter <imageview> </imageview>

1 个答案: