开始编写例子

app/src/main/java/com/arialyy/simple/adapter/DownloadAdapter.java

@@ -0,0 +1,72 @@
+package com.arialyy.simple.adapter;
+
+import android.content.Context;
+import android.util.SparseArray;
+import android.view.View;
+import android.widget.Button;
+import butterknife.Bind;
+import com.arialyy.absadapter.common.AbsHolder;
+import com.arialyy.absadapter.recycler_view.AbsRVAdapter;
+import com.arialyy.downloadutil.entity.DownloadEntity;
+import com.arialyy.simple.R;
+import com.arialyy.simple.widget.HorizontalProgressBarWithNumber;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Created by Lyy on 2016/9/27.
+ * 下载列表适配器
+ */
+public class DownloadAdapter extends AbsRVAdapter<DownloadEntity, DownloadAdapter.MyHolder> {
+  private static final String TAG = "DownloadAdapter";
+  private Map<String, Long> mProgress = new HashMap<>();
+  private SparseArray<String> mPositions = new SparseArray<>();
+
+  public DownloadAdapter(Context context, List<DownloadEntity> data) {
+    super(context, data);
+    int i = 0;
+    for (DownloadEntity entity : data) {
+      mProgress.put(entity.getDownloadUrl(), entity.getCurrentProgress());
+      mPositions.append(i, entity.getDownloadUrl());
+      i++;
+    }
+  }
+
+  @Override protected MyHolder getViewHolder(View convertView, int viewType) {
+    return new MyHolder(convertView);
+  }
+
+  @Override protected int setLayoutId(int type) {
+    return R.layout.item_download;
+  }
+
+  public synchronized void setProgress(String url, long currentPosition) {
+    mProgress.put(url, currentPosition);
+    notifyItemChanged(indexItem(url));
+  }
+
+  private int indexItem(String url) {
+    return mPositions.indexOfValue(url);
+  }
+
+  @Override protected void bindData(MyHolder holder, int position, DownloadEntity item) {
+    //holder.progress.setProgress(item.getCurrentProgress());
+    long size = item.getFileSize();
+    int current = 0;
+    if (size == 0){
+      current = 0;
+    }
+    current = (int) (mProgress.get(item.getDownloadUrl()) * 100 / item.getFileSize());
+    holder.progress.setProgress(current);
+  }
+
+  class MyHolder extends AbsHolder {
+    @Bind(R.id.progressBar) HorizontalProgressBarWithNumber progress;
+    @Bind(R.id.bt) Button bt;
+
+    public MyHolder(View itemView) {
+      super(itemView);
+    }
+  }
+}