我有一个包含三个视图的listview，一个用于视频，一个用于音频 在视频持有人我有listview，其中我显示视频的缩略图，如果它下载。它工作正常，但当我滚动然后该缩略图设置在另一个imageview上。
mConvertView = convertView;
chatMessage=chatMessages.get(position);
final TextViewHolder mTextViewHolder;
final ImageViewHolder mImageViewHolder;
final AudioViewHolder mAudioViewHolder;
Object object=chatMessages.get(position);
// mHandler = new Handler();
disply = new DisplayImageOptions.Builder().cacheInMemory(true)
.cacheOnDisk(true)
.imageScaleType(ImageScaleType.IN_SAMPLE_POWER_OF_2)
.displayer(new RoundedBitmapDisplayer(20)).build();
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(
context).defaultDisplayImageOptions(disply).build();
ImageLoader.getInstance().init(config);
rd = new RecordBaseHandler(context);
if(chatMessage.getAssetsId() != null)
{
if(chatMessage.getType().equalsIgnoreCase("audio"))
{
Log.d("Node", "Item position is "+chatMessages.get(position));
mAudioViewHolder = getAudioViewHolder(mConvertView);
mAudioViewHolder.mChatmessage=chatMessage;
// TODO change below code
if(chatMessage.getSenderId() != null)
setAlignment(mAudioViewHolder, chatMessage.getSenderId().intValue() != ((SMBChatApp) context.getApplication()).getQbUser().getId().intValue());
else
setAlignment(mAudioViewHolder, false);
mAudioViewHolder.play.setTag(position);
mAudioViewHolder.txtInfo.setText(getTimeText(chatMessage.getDate_sent()));
mycontent = chatMessage.getProperty("content-type");
try {
Cursor rs = rd.getData(chatMessage.getAssetsId());
rs.moveToFirst();
filepath = rs.getString(rs.getColumnIndex("file_path"));
Log.d("Node", "FINALLY FILE PATH IS " + filepath);
if (!rs.isClosed()) {
rs.close();
}
if (filepath != null) {
mAudioViewHolder.download.setVisibility(View.GONE);
} else {
mAudioViewHolder.play.setVisibility(View.GONE);
mAudioViewHolder.download.setVisibility(View.VISIBLE);
}
} catch (Exception e) {
// TODO: handle exception
Log.d("Node", "EXECPTIOn " + e);
}
mAudioViewHolder.download.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Log.d("Node: ", "Reading all contacts..");
List<RecordModel> contacts = rd.getAllContacts();
for (RecordModel cn : contacts) {
String log = "Id: "+ cn.getId()+ " ,Name: "+ cn.getAttch_id()+ " ,Phone: " + cn.getFile_path();
Log.d("Node: ",log);
}
// File tempMp3 = File.createTempFile("record", ".mp3", f);
new Thread()
{
public void run() {
File tempMp3 = null;
try {
tempMp3 = File.createTempFile("record", ".mp3",Environment.getExternalStorageDirectory());
} catch (IOException e) {
e.printStackTrace();
}
//We are creating folder first using mkdir
File f = new File(Environment.getExternalStorageDirectory()+ "/smbchat/");
if(!f.exists()){
f.mkdirs();
}
//then we want to store downloded file in that folder
File output = new File(f, "smb_" + System.currentTimeMillis() + "_audio.mp3");
Log.d("Node", "URL VALUE "+chatMessage.getUrl());
HttpRequest.get(chatMessage.getUrl()).receive(output);
audioFileName=String.valueOf(output);
Log.d("Node", "FILE SAVED SUCCESSFULLY"+tempMp3);
Log.d("Node", "FILE SAVED SUCCESSFULLY AUDIOFILENAME " + audioFileName);
context.runOnUiThread(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
Toast.makeText(context, "file downloaded successfully", Toast.LENGTH_LONG).show();
mAudioViewHolder.download.setVisibility(View.GONE);
}
});
rd.addContact(new RecordModel(chatMessage.getAssetsId(), audioFileName));
};
}.start();
}
});
mAudioViewHolder.play.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
mAudioViewHolder.play.setVisibility(View.GONE);
mAudioViewHolder.pause.setVisibility(View.VISIBLE);
Log.d("DATA", "currently playing " + position);
playingAudioPosition = position;
Object tag = mAudioViewHolder.play.getTag();
// Here we get the position that we have set for the checkbox using setTag.
String str=chatMessage.getAssetsId();
Cursor rs = rd.getData(str);
rs.moveToFirst();
try
{
filepath = rs.getString(rs.getColumnIndex("file_path"));
}
catch(Exception e)
{
Toast.makeText(mConvertView.getContext(), "File is not downloaded", Toast.LENGTH_LONG).show();
}
Log.d("Node", "file path for id "+ str + "is "+ filepath);
if (!rs.isClosed()) {
rs.close();
}
if(filepath==null) //we check whether file is present or not
{
Toast.makeText(mConvertView.getContext(), "File is Not downloaded", Toast.LENGTH_SHORT).show();
((View)v.getParent()).findViewById(R.id.btndn).setVisibility(View.VISIBLE);
// mAudioViewHolder.download.setVisibility(mConvertView.VISIBLE);
}
else {
((View) v.getParent()).findViewById(
R.id.chat_audio_progress_bar)
.setVisibility(View.VISIBLE);
// mAudioViewHolder.progressBar.setVisibility(mConvertView.VISIBLE);
mediaPlayer = new MediaPlayer();
String yofile = "file://" + filepath;
mediaPlayer
.setAudioStreamType(AudioManager.STREAM_MUSIC);
try {
mediaPlayer.setDataSource(yofile);
} catch (IllegalArgumentException
| SecurityException
| IllegalStateException | IOException e) {
// TODO Auto-generated catch block
Log.e("Node", "ERRORSS Part 1 is" + e);
mediaPlayer.setOnCompletionListener(new OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp)
{
mAudioViewHolder.isPlaying = false;
/**
* since audio is stop
* playing, remove its
* position value
* */
playingAudioPosition = -1;
}
});
}
try {
mediaPlayer.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
Log.e("Node", "ERRORSS is Part 2 " + e);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mediaPlayer.start();
isMediaReleased = false;
mAudioViewHolder.progressBar.setMax(mediaPlayer.getDuration());
updateSeekBar();
}
}
});
mAudioViewHolder.pause
.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mAudioViewHolder.play.setVisibility(View.VISIBLE);
mAudioViewHolder.pause.setVisibility(View.GONE);
mediaPlayer.stop();
}
});
}
if (chatMessage.getType().equalsIgnoreCase("image") || chatMessage.getType().equalsIgnoreCase("photo"))
{
mImageViewHolder = getImageViewHolder(mConvertView);
mImageViewHolder.mChatmessage=chatMessage;
Log.d("Node", "this is Image position is "+chatMessages.get(position));
// TODO change below code
if(chatMessage.getSenderId() != null)
setAlignment(mImageViewHolder, chatMessage.getSenderId().intValue() != ((SMBChatApp) context.getApplication()).getQbUser().getId().intValue());
else
setAlignment(mImageViewHolder, false);
mImageViewHolder.txtInfo.setText(getTimeText(chatMessage.getDate_sent()));
if (chatMessage.getProperty("localfile") != null) {
imageUri1 = chatMessage.getProperty("localfile");
String status = chatMessage.getProperty("isUpload");
imageUri2 = "file://" + imageUri1;
Log.d("Node", "This time from local");
ImageLoader.getInstance().displayImage(chatMessage.getUrl(),
mImageViewHolder.myimageview, disply);
//
// Log.d("Node", "IMAGEURI is : " + imageUri2
// + "And status is " + status);
} else {
Log.d("Node", "Here we are now else");
ImageLoader.getInstance().displayImage(chatMessage.getUrl(),
mImageViewHolder.myimageview, disply);
}
mImageViewHolder.myimageview.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Toast.makeText(context, "This is Image",
Toast.LENGTH_LONG).show();
Intent intent = new Intent(context,
ShowImgActivity.class);
String urll = chatMessage.getUrl();
Bitmap bitmap = mImageViewHolder.myimageview.getDrawingCache();
intent.putExtra("URL", urll);
intent.putExtra("BitmapImage", bitmap);
context.startActivity(intent);
}
});
}
//if aatchmnet is video then do this
else if (chatMessage.getType().equalsIgnoreCase("video")) {
mImageViewHolder = getImageViewHolder(mConvertView);
mImageViewHolder.mChatmessage=chatMessage;
// TODO change below code
if(chatMessage.getSenderId() != null)
setAlignment(mImageViewHolder, chatMessage.getSenderId().intValue() != ((SMBChatApp) context.getApplication()).getQbUser().getId().intValue());
else
setAlignment(mImageViewHolder, false);
mImageViewHolder.txtInfo.setText(getTimeText(chatMessage.getDate_sent()));
// Log.d("Node1", "This time from local videos");
if (chatMessage.getVideo_thumb() != null) {
Log.i("Node", "Yes this video has thumbnail");
Bitmap bitmp = StringToBitMap(chatMessage.getProperty("video_thumb"));
if (bitmp != null) {
mImageViewHolder.myimageview.setImageBitmap(bitmp);
} else {
mImageViewHolder.myimageview
.setImageResource(R.drawable.vids);
}
} else {
Log.i("Node", "Yes this dont have thumbanil");
ImageLoader.getInstance().displayImage(chatMessage.getUrl(),
mImageViewHolder.myimageview, disply);
}
mImageViewHolder.myimageview.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
final ImageView imageThumbnail = (ImageView)v;
final Handler handler=new Handler() {
public void handleMessage(Message msg) {
Log.e("", "handeler bmVideoThumbnail"+bmVideoThumbnail);
if (bmVideoThumbnail!=null) {
imageThumbnail.setImageBitmap(bmVideoThumbnail);
}
};
};
new Thread()
{
public void run() {
//We are creating folder first using mkdir
File f = new File(Environment.getExternalStorageDirectory()+ "/smbchat/");
if(!f.exists()){
f.mkdirs();
}
//then we want to store downloded file in that folder
File output = new File(f, "VID_" + System.currentTimeMillis() + "_video.mp4");
Log.d("Node", "URL VALUE "+chatMessage.getUrl());
HttpRequest.get(chatMessage.getUrl()).receive(output);
audioFileName=String.valueOf(output);
Log.d("Node", "FILE SAVED SUCCESSFULLY AUDIOFILENAME " + audioFileName);
donloadedVideoUri= "file://" + audioFileName;
Log.e("Node", "donloadedVideoUri INSIDE THREAD------"+donloadedVideoUri);
bmVideoThumbnail=ThumbnailUtils.createVideoThumbnail(audioFileName, android.provider.MediaStore.Video.Thumbnails.MICRO_KIND);
Log.e("Node", "bmVideoThumbnail---------"+bmVideoThumbnail);
if(bmVideoThumbnail !=null)
handler.sendEmptyMessage(0);
};
}.start();
// String uriString = chatMessage.getUrl();
// Uri intentUri = Uri.parse(uriString);
//
// Intent intent2 = new Intent();
// intent2.setAction(Intent.ACTION_VIEW);
// intent2.setDataAndType(intentUri, "video/*");
// context.startActivity(intent2);
}
});
}
}
else {
mTextViewHolder = getTextViewHolder(mConvertView);
mTextViewHolder.mChatmessage=chatMessage;
Log.d("Node", "this is text position is "+chatMessages.get(position));
//TODO redo following logic
if(chatMessage.getSenderId() != null)
setAlignment(mTextViewHolder, chatMessage.getSenderId().intValue() != ((SMBChatApp) context.getApplication()).getQbUser().getId().intValue());
else
setAlignment(mTextViewHolder, false);
mTextViewHolder.txtInfo.setText(getTimeText(chatMessage.getDate_sent()));
mTextViewHolder.txtMessage.setText(chatMessage.getBody());
mTextViewHolder.message = chatMessage;
}
return mConvertView;
答案 0 :(得分：0)
您可以在多个列表项中看到相同的缩略图，因为Android会重复使用列表项的视图。 需要注意使缩略图不可见或使用“暗示没有图像的图标”。如果您没有列出该列表项位置的正确图像。必须在列表适配器的getView方法中进行此检查。
答案 1 :(得分：0)
使用一个ViewHolder并定义三个字段并根据状态显示隐藏视图。 在列表中维护状态而不是适配器。 因为在列表视图上重新创建列表项滚动。