【发布时间】:2017-01-24 08:39:23
【问题描述】:
我想在图像视图中设置文本。目前我从drawable中获取图像,即使我认为使用viewholder更好?这是我的适配器:
public class ImageAdapter extends BaseAdapter {
private Context mContext;
public ImageAdapter(Context c) {
mContext = c;
}
public int getCount() {
return mThumbIds.length;
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return 0;
}
// create a new ImageView for each item referenced by the Adapter
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
if (convertView == null) {
// if it's not recycled, initialize some attributes
imageView = new ImageView(mContext);
imageView.setLayoutParams(new GridView.LayoutParams(85, 85));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(8, 8, 8, 8);
} else {
imageView = (ImageView) convertView;
}
imageView.setImageResource(mThumbIds[position]);
return imageView;
}
// references to our images
private Integer[] mThumbIds = {
R.drawable.ic_round, R.drawable.ic_round,
R.drawable.ic_round, R.drawable.ic_round,
R.drawable.ic_round, R.drawable.ic_round,
R.drawable.ic_round, R.drawable.ic_round,
};
}
这是我想要使用的布局: item_single.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/single"
>
<ImageView
android:id="@+id/myImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_round" />
<TextView
android:id="@+id/myImageViewText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/myImageView"
android:layout_alignTop="@+id/myImageView"
android:layout_alignRight="@+id/myImageView"
android:layout_alignBottom="@+id/myImageView"
android:layout_margin="1dp"
android:gravity="center"
android:text=""
android:textColor="#000000" />
</RelativeLayout>
我看过这个问题How can I add a TextView into an ImageView in GridView Layout? 但没有明确的解释。在那个例子中,他使用了 ViewHolder,我的一直希望我使用 RecycleViewHolder。
【问题讨论】:
标签: android gridview adapter android-viewholder