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我開發一個應用程序供人下載注意事項... 因此，有在每個Cardview 下載兩個按鈕和分享按鈕 下載按鈕和分享按鈕是混合...我的意思是..有時一個ViewHolder的數據用在另一個..有時當我點擊下載數據。從所有視圖的相同視圖下載。按鈕和ViewHolders聯繫日益混合
這裏是代碼...
package com.razorreborn.csebeta;
import android.app.DownloadManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.CardView;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.CookieManager;
import android.webkit.CookieSyncManager;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.TextView;
import java.io.File;
import java.util.List;
/**
*
* Created by Kiran Anto aka RazorSharp on 2/17/2016.
* For more Info Contact
* [email protected]
* 9495333724
* All Copyrights Reserved 2016
*
*/
public class subjectCardAdapter extends RecyclerView.Adapter<subjectCardAdapter.ViewHolder> {
private final Context context;
private final List<subjectContent> subjectData;
DownloadManager downloadManager;
private String downloadFileUrl;
private long myDownloadReference;
private String type;
public subjectCardAdapter(List<subjectContent> subjectData, Context context){
super();
//Getting all the notification
this.subjectData = subjectData;
this.context = context;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.list_subject, parent, false);
return new ViewHolder(v);
}
@Override
public void onBindViewHolder(final ViewHolder holder, int position) {
final subjectContent subjectContent = subjectData.get(position);
holder.Name.setText(subjectContent.getName());
holder.Description.setText(subjectContent.getDescription());
holder.Type.setText(subjectContent.getType());
holder.Uploader.setText(subjectContent.getAuthor());
holder.Date.setText(subjectContent.getDate());
holder.Description.setMaxLines(5);
if(Global.Orientation.equals("Landscape")) {
holder.Name.setTextSize(20);
holder.Description.setTextSize(13);
}
final String DOWNLOAD_MESSAGE = "Download " + subjectContent.getName() +" of Subject " + Global.subject + " Notes from Here : " + downloadFileUrl + "\n And to Download this App : \n\n " + Global.AppShare;
downloadFileUrl = subjectContent.getDownload_link();
downloadManager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
type = downloadFileUrl.substring(downloadFileUrl.indexOf("Downloads/") + 10, downloadFileUrl.length()).replace("%20","");
final String path = context.getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS).getAbsolutePath()+"/"+type;
Log.i("LOGS : ",path);
File applicationFile = new File (path);
if(applicationFile.exists()) {
holder.download.setText(" Open ");
}
holder.download.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Add Content To download here...!!!
if (holder.download.getText().equals("Download")) {
Uri uri = Uri.parse(downloadFileUrl);
DownloadManager.Request request = new DownloadManager.Request(uri);
request.setTitle(subjectContent.getName());
request.setDescription(subjectContent.getDescription());
request.setDestinationInExternalFilesDir(context.getApplicationContext(),Environment.DIRECTORY_DOWNLOADS,type);
myDownloadReference = downloadManager.enqueue(request);
CookieSyncManager.createInstance(context);
CookieManager cookieManager = CookieManager.getInstance();
cookieManager.removeAllCookie();
/*Intent intent = new Intent(Intent.ACTION_VIEW, uri);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); // without this there would be crashing coz we dont call from a activity
context.startActivity(intent);*/
} else if(holder.download.getText().equals(" Open ")) {
File file = new File (path);
Intent target = new Intent(Intent.ACTION_VIEW);
target.setDataAndNormalize(Uri.fromFile(file));
String[] mimetypes = {"application/pdf","text/plain","application/vnd.openxmlformats-officedocument.spreadsheetml.sheet","application/vnd.openxmlformats-officedocument.wordprocessingml.document"};
target.setType("application/pdf");
target.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
target.putExtra(Intent.EXTRA_MIME_TYPES, mimetypes);
Intent intent = Intent.createChooser(target, "Open File");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
}
}
});
holder.share.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Add Content To download here...!!!
Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
sharingIntent.setType("text/plain");
sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, DOWNLOAD_MESSAGE);
sharingIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
Intent sharevia = new Intent(Intent.createChooser(sharingIntent, "Share via"));
sharevia.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(sharevia);
}
});
holder.cardView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//TODO implement onClick for the card here..!
holder.Description.setMaxLines(100);
}
});
}
@Override
public int getItemCount() {
return subjectData.size();
}
class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
public final TextView Name;
public final TextView Description;
public final TextView Type;
public final TextView Uploader;
public final TextView Date;
public final Button download;
public final ImageButton share;
public final CardView cardView= (CardView) itemView.findViewById(R.id.card_view_subject);
//TODO cardview is taken to use it for onClick Events
public ViewHolder(View itemView) {
super(itemView);
Name = (TextView) itemView.findViewById(R.id.text_name);
Date = (TextView) itemView.findViewById(R.id.upload_date_blank);
Uploader = (TextView) itemView.findViewById(R.id.uploader_blank);
Description = (TextView) itemView.findViewById(R.id.text_description);
Type = (TextView) itemView.findViewById(R.id.textview_type);
download = (Button) itemView.findViewById(R.id.button);
share = (ImageButton) itemView.findViewById(R.id.sharebutton);
}
@Override
public void onClick(View view) {
}
}
}
您已在ViewHolder中實施了OnClickListener。你應該沒有點擊嗎？我在ViewHolder中看不到代碼download.setOnClickListener（this） – Raghunandan