Question

package com.example.shivamgoyal.photografia;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.util.SparseBooleanArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.ImageView;

import com.bumptech.glide.Glide;
import com.bumptech.glide.request.RequestOptions;

import java.util.ArrayList;


public class ImageAdapter extends RecyclerView.Adapter<ImageAdapter.MyViewHolder> {

    private ArrayList<String> mImagesList;
    private Context mContext;
    private SparseBooleanArray mSparseBooleanArray;

    public ImageAdapter(Context context, ArrayList<String> imageList) {
        mContext = context;
        mSparseBooleanArray = new SparseBooleanArray();
        mImagesList = new ArrayList<String>();
        this.mImagesList = imageList;

    }

    public ArrayList<String> getCheckedItems() {
        ArrayList<String> mTempArry = new ArrayList<String>();

        for(int i=0;i<mImagesList.size();i++) {
            if(mSparseBooleanArray.get(i)) {
                mTempArry.add(mImagesList.get(i));
            }
        }

        return mTempArry;
    }

    public long getItemId(int position) {
        return position;
    }

    CompoundButton.OnCheckedChangeListener mCheckedChangeListener = new CompoundButton.OnCheckedChangeListener() {

        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            mSparseBooleanArray.put((Integer) buttonView.getTag(), isChecked);
        }
    };


    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

        View itemView = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.row_multiphoto_item, parent, false);

        return new MyViewHolder(itemView);
    }


    public void onBindViewHolder(MyViewHolder holder, int position) {

        String imageUrl = mImagesList.get(position);

        Glide.with(mContext)
                .load("file://"+imageUrl)
                .apply(RequestOptions.centerCropTransform())
                .placeholder(R.drawable.ic_launcher)
                .error(R.drawable.ic_launcher)
                .into(holder.imageView);

        holder.checkBox.setTag(position);
        holder.checkBox.setChecked(mSparseBooleanArray.get(position));
        holder.checkBox.setOnCheckedChangeListener(mCheckedChangeListener);
    }


    public int getItemCount() {
        return mImagesList.size();
    }

    public class MyViewHolder extends RecyclerView.ViewHolder {

        public CheckBox checkBox;
        public ImageView imageView;

        public MyViewHolder(View view) {
            super(view);

            checkBox = (CheckBox) view.findViewById(R.id.checkBox1);
            imageView = (ImageView) view.findViewById(R.id.imageView1);
        }
    }

}

在Windows上使用android studio 3.0 canary 6。当构建过程运行时出现错误 - 无法解决方法占位符（），使用滑动3.5.2但仍然出现此错误。只有在placeholder（）方法中有错误，建议一些解决方案摆脱这个问题。导入滑动文件，但它无法解决。

Answer 1

升级 GLIDE 版本。

在加载媒体之前，可以添加

Placeholder 。你应该使用以下版本。

compile 'com.github.bumptech.glide:glide:3.7.0'

<强> FYI

Glide附带标准 placeholder ，这是（版本 3.6.1）默认有效。

构建项目时出错 - 无法解析方法占位符（）

1 个答案: