我不知道如何增加或减少图像大小以及如何回收它。下面是丝绸给布局。我想知道这个问题的答案有人告诉我。下面丝绸中的编码是你能理解的丝绸。如何增加或减少图像尺寸android。请重新使用Recyleview。
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<com.balysv.materialripple.MaterialRippleLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:mrl_rippleAlpha="0.2"
app:mrl_rippleColor="@color/ripple_color"
app:mrl_rippleHover="true"
app:mrl_rippleOverlay="true">
<LinearLayout
android:id="@+id/lyt_parent"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="vertical">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.makeramen.roundedimageview.RoundedImageView
android:id="@+id/category_image"
android:layout_width="0dp"
android:layout_height="0dp"
android:scaleType="centerCrop"
android:src="@drawable/ic_thumbnail"
app:layout_constraintDimensionRatio="H,1:1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:riv_corner_radius="12dp" />
</androidx.constraintlayout.widget.ConstraintLayout>
<TextView
android:id="@+id/category_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:maxLines="1"
android:padding="6dp"
android:text="Category"
android:ellipsize="end"
android:textAppearance="@style/Base.TextAppearance.AppCompat.Body2"
android:textSize="14sp" />
</LinearLayout>
</com.balysv.materialripple.MaterialRippleLayout>
</RelativeLayout>
适配器
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import com.Tamiltv.newspaper.Config;
import com.Tamiltv.newspaper.R;
import com.Tamiltv.newspaper.models.Category;
import com.Tamiltv.newspaper.utils.SharedPref;
import com.squareup.picasso.Picasso;
import java.util.ArrayList;
import java.util.List;
import static com.Tamiltv.newspaper.utils.Constant.CHANNEL_GRID_2_COLUMN;
import static com.Tamiltv.newspaper.utils.Constant.CHANNEL_GRID_3_COLUMN;
public class AdapterCategory extends RecyclerView.Adapter<AdapterCategory.ViewHolder> {
private List<Category> items;
private Context ctx;
private OnItemClickListener mOnItemClickListener;
public interface OnItemClickListener {
void onItemClick(View view, Category obj, int position);
}
public void setOnItemClickListener(final OnItemClickListener mItemClickListener) {
this.mOnItemClickListener = mItemClickListener;
}
// Provide a suitable constructor (depends on the kind of dataset)
public AdapterCategory(Context context, List<Category> items) {
this.items = items;
ctx = context;
}
public class ViewHolder extends RecyclerView.ViewHolder {
// each data item is just a string in this case
public TextView category_name;
public ImageView category_image;
public LinearLayout lyt_parent;
public ViewHolder(View v) {
super(v);
category_name = v.findViewById(R.id.category_name);
category_image = v.findViewById(R.id.category_image);
lyt_parent = v.findViewById(R.id.lyt_parent);
}
}
@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
// create a new view
SharedPref sharedPref = new SharedPref(ctx);
if (sharedPref.getCategoryViewType() == CHANNEL_GRID_2_COLUMN || sharedPref.getCategoryViewType() == CHANNEL_GRID_3_COLUMN) {
View menuItemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.lsv_item_category_grid, parent, false);
return new ViewHolder(menuItemView);
} else {
View menuItemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.lsv_item_category, parent, false);
return new ViewHolder(menuItemView);
}
}
// Replace the contents of a view (invoked by the layout manager)
@Override
public void onBindViewHolder(ViewHolder holder, final int position) {
final Category c = items.get(position);
holder.category_name.setText(c.category_name);
Picasso.get()
.load(Config.ADMIN_PANEL_URL + "/upload/category/" + c.category_image)
.placeholder(R.drawable.ic_thumbnail)
.into(holder.category_image);
holder.lyt_parent.setOnClickListener(view -> {
if (mOnItemClickListener != null) {
mOnItemClickListener.onItemClick(view, c, position);
}
});
}
public void setListData(List<Category> items) {
this.items = items;
notifyDataSetChanged();
}
public void resetListData() {
this.items = new ArrayList<>();
notifyDataSetChanged();
}
// Return the size of your dataset (invoked by the layout manager)
@Override
public int getItemCount() {
return items.size();
}
}