我有两个关于同一活动的列表视图。我正在运行一个定期任务来通知一个列表视图的数据更改，我有一个按钮来重新设置第一个列表视图上的数据（设置适配器再次调用此处为第一个列表视图）。 当我点击按钮再次将适配器设置为第一个列表视图时，即使我恢复了活动，我的第二个适配器也会停止通知。
我使用简单的功能来做到这一点。
重复任务：
我打电话给：secondAdapter.notifyDataSetChanged();
点击按钮：
我致电：firstlist.setadapter(firstadapter);
以下是重复出现的任务：
ScheduledExecutorService scheduler =
Executors.newSingleThreadScheduledExecutor();
scheduler.scheduleAtFixedRate(new Runnable() {
@Override
public void run() {
boolean willRun=false;
double size=0;
for (int i = 0; i < SoapCostants.downloadedList.size(); i++) {
size=size+Double.parseDouble(String.valueOf(SoapCostants.downloadedList.get(i).getSize()));
if (!SoapCostants.downloadedList.get(i).getProgress().equalsIgnoreCase("no")) {
willRun=true;
}
}
if (!willRun){
double d=Double.parseDouble(AppActivity.readFromFile("downloadedLImitMb", "0.0"));
// Log.v("Key>>>>>>>>>>>>>>>double", d+"" );
if (size>d){
AppActivity.writeToFile(size+"", "downloadedLImitMb");
// Log.v("Key>>>>>>>>>>>>>>>double2", d+"" );
}
}
else if (willRun) {
SoapCostants.willInvalidate=true;
for (int i = 0; i < SoapCostants.downloadedList.size(); i++) {
for (int j = 0; j < SoapCostants.downloadList.size(); j++) {
try {
if (SoapCostants.downloadList.get(j)!=null) {
// Log.v("Key>>>>>>>>>>>>>>>", SoapCostants.downloadList.get(j).getKey()+" "+SoapCostants.downloadedList.get(i).getName()+"" );
if (SoapCostants.downloadList.get(j).getKey()!=null) {
if (!SoapCostants.downloadedList.get(i).getProgress().equalsIgnoreCase("no")) {
if (SoapCostants.downloadList.get(j).getKey().equalsIgnoreCase(SoapCostants.downloadedList.get(i).getName())) {
Download d;
d = SoapCostants.downloadList.get(j).getValue();
SoapCostants.downloadList.get(j).getValue().getProgress().getPercentTransferred();
float downloded = getFileSize(new File(Environment.getExternalStorageDirectory() + File.separator + "ToteFlix" + File.separator + SoapCostants.downloadList.get(j).getKey()));
float total = d.getProgress().getTotalBytesToTransfer();
float percentage = ((downloded / total) * 100);
DraggedVideoEntity entityy = SoapCostants.downloadedList.get(i);
if (getFileSize(new File(Environment.getExternalStorageDirectory() + File.separator + "ToteFlix" + File.separator + SoapCostants.downloadList.get(j).getKey())) < (int) d.getProgress().getTotalBytesToTransfer()) {
if (!(entityy.getProgressLevel() > (int) percentage)) {
if (readFromFile(entityy.getName() + "5", "no").equalsIgnoreCase("no")) {
if (entityy.getProgressLevel() > 5) {
// writeToFile(Float.parseFloat(AppActivity.readFromFile(entityy.getName()+"size", "0.0"))+(entityy.getSize()/20)+"", entityy.getName()+"size");
AppActivity.writeToFile(Float.parseFloat(AppActivity.readFromFile("downloadedLImitMb", "0.0")) + (entityy.getSize() / 20) + "", "downloadedLImitMb");
writeToFile("yes", entityy.getName() + "5");
// Log.v("pr>>>>>>>>>>>>>>>>>", AppActivity.readFromFile("downloadedLImitMb", "0.0")+"");
}
}
int perc = (int) percentage;
SoapCostants.downloadedList.get(i).setProgressLevel(perc);
SoapCostants.downloadedList.get(i).setIsdone(false);
runOnUiThread(new Runnable() {
@Override
public void run() {
List<DraggedVideoEntity> newList = new ArrayList<DraggedVideoEntity>();
newList.addAll(SoapCostants.downloadedList);
SoapCostants.downloadedList.clear();
SoapCostants.downloadedList.addAll(newList);
DashboardActivity2.adaptr.notifyDataSetChanged();
if (ifInvalidate) {
adaptr.notifyDataSetChanged();
//DashboardActivity2.travelReady.setAdapter(adaptr);
((DraggedVideoAdapter2) travelReady.getAdapter()).notifyDataSetChanged();
//travelReady.setAdapter(adaptr);
Log.v("pr>>>>>>>>>>>>>>>>>", "Invalidating");
if (!Utils.isInternetAvailable(FullTravelReady.this.getApplicationContext())) {
AppActivity.showAlertDialog(FullTravelReady.this, "Please check your Internet connection!");
}
}
}
});
}
} else {
/*writeToFile(Float.parseFloat(AppActivity.readFromFile(entityy.getName()+"size", "0.0"))+(entityy.getSize()/20)+"", entityy.getName()+"size");
float total1=(Float.parseFloat(AppActivity.readFromFile("downloadedLImitMb", "0.0"))-Float.parseFloat(AppActivity.readFromFile(entityy.getName()+"size", "0.0")))+entityy.getSize();
AppActivity.writeToFile(total1+"","downloadedLImitMb");*/
// Log.v("Hey This is the actual total", total1+" "+(Float.parseFloat(AppActivity.readFromFile("downloadedLImitMb", "0.0"))-Float.parseFloat(AppActivity.readFromFile(entityy.getName()+"size", "0.0")))+" "+entityy.getSize());
AppActivity.writeToFile("no", entityy.getName() + "-download");
SoapCostants.downloadedList.get(i).setProgress("no");
SoapCostants.downloadedList.get(i).setProgressLevel(0);
SoapCostants.downloadedList.get(i).setIsdone(true);
DashboardActivity2.adaptr.notifyDataSetChanged();
Log.v("pr>>>>>>>>>>>>>>>>>", "Invalidating" + entityy.getName());
// Log.v("prTotal>>>>>>>>>>>>>>>>>", AppActivity.readFromFile("downloadedLImitMb", "0.0")+"");
}
}
}
}
}
} catch (Exception e) {
// TODO: handle exception
//Log.v("Key>>>>>>>>>>>>>>>", /*SoapCostants.downloadList.get(j).getKey()+*/" "+entityy.getName()+"" );
}
}
}
if (ifInvalidate) {
runOnUiThread(new Runnable() {
@Override
public void run() {
List<DraggedVideoEntity> newList=new ArrayList<DraggedVideoEntity>();
newList.addAll(SoapCostants.downloadedList);
SoapCostants.downloadedList.clear();
SoapCostants.downloadedList.addAll(newList);
if (DashboardActivity2.adaptr!=null) {
DashboardActivity2.adaptr.notifyDataSetChanged();
}
// DashboardActivity2.travelReady.setAdapter(adaptr);
adaptr.notifyDataSetChanged();
((DraggedVideoAdapter2) travelReady.getAdapter()).notifyDataSetChanged();
Log.v("pr>>>>>>>>>>>>>>>>>", "Invalidating");
//travelReady.setAdapter(adaptr);
}
});
}
}
}
},0, 2, TimeUnit.SECONDS);
这是我的适配器类：
public class DraggedVideoAdapter extends ArrayAdapter<DraggedVideoEntity>{
List<DraggedVideoEntity> videoList;
Context context;
View v;
DraggedVideoEntity entity;
LayoutInflater inflater;
Dialog d1;
int resource;
VideoView myVideoView;
public ImageLoader imageLoader;
String from;
ScheduledExecutorService scheduler;
PieProgressDrawable pieProgressDrawable;
//float height, width;
public DraggedVideoAdapter(Context context, int resource,
List<DraggedVideoEntity> videoList,float height, float width,String from) {
super(context, resource, videoList);
// TODO Auto-generated constructor stub
this.videoList=videoList;
this.resource=resource;
this.context=context;
this.from=from;
pieProgressDrawable = new PieProgressDrawable();
imageLoader=new ImageLoader(context.getApplicationContext());
inflater = (LayoutInflater)context.getSystemService(context.LAYOUT_INFLATER_SERVICE);
if (videoList.size()>0) {
if (!SoapCostants.onceLoaded) {
// new AppActivity.progressUpdater(context).execute();
SoapCostants.onceLoaded = true;
}
}
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
v = convertView;
final ViewHolder holder;
entity = videoList.get(position);
if (convertView == null) {
v = inflater.inflate(resource, null);
holder = new ViewHolder();
setViewHolder(holder);
v.setTag(holder);
} else {
holder = (ViewHolder) v.getTag();
}
if (entity.getMpaaRating()!=null)
holder.mpaaRating.setText(entity.getMpaaRating());
if (entity.getMpaaRating()!=null)
holder.mpaaRating1.setText(entity.getMpaaRating());
if (entity.getTitle()!=null)
holder.title.setText(entity.getTitle());
if (entity.getTitle()!=null)
holder.title2.setText(entity.getTitle());
if (entity.getDuration()!=null)
holder.duration.setText(entity.getDuration());
if (entity.getDuration()!=null)
holder.duration1.setText(entity.getDuration());
if (entity.getGenre()!=null)
holder.genre.setText(entity.getGenre());
holder.genre1.setText(entity.getGenre());
//holder.circularProgressbar.setProgressDrawable(pieProgressDrawable);
if (holder.circularProgressbar != null) {
holder.circularProgressbar.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
holder.circularProgressbar.setProgress(0);
try {
holder.circularProgressbar.setProgress(entity.getProgressLevel());
//}
}
catch (Exception e){
}
if (entity.getProgress() != null) {
if (entity.getProgress().equalsIgnoreCase("no")/*&& AppActivity.readFromFile(entity.getName()+"-download", "").equalsIgnoreCase("no")*/) {
holder.circularProgressbar.setVisibility(View.GONE);
} else {
holder.circularProgressbar.setVisibility(View.VISIBLE);
}
} else {
holder.circularProgressbar.setVisibility(View.GONE);
}
}
holder.description2.setText(entity.getDescription());
if (!SoapCostants.isfull || from.equalsIgnoreCase("dashboard")) {
Drawable d = (Drawable) Drawable.createFromPath(Environment.getExternalStorageDirectory()+File.separator+"ToteFlixImages_cache"+File.separator+entity.getName().replace(".mp4", ".jpg"));
holder.video1.setBackgroundDrawable(d);
}
else {
imageLoader.DisplayImage(entity.getImageUrl(), holder.video,entity.getName().replace(".mp4", ".jpg"));
}
if (/*entity.getIsfull().equalsIgnoreCase("no")&&*/ !SoapCostants.isfull || from.equalsIgnoreCase("dashboard")) {
holder.shortView.setVisibility(View.VISIBLE);
holder.fullView.setVisibility(View.GONE);
}
else {
holder.shortView.setVisibility(View.GONE);
holder.fullView.setVisibility(View.VISIBLE);
}
holder.circularProgressbar.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View view) {
if (!SoapCostants.isalreadyOPen) {
if (SoapCostants.viewOpened.equals("removed") || SoapCostants.viewOpened.equals("remove")) {
Intent i1 = new Intent(context, FullTravelReady.class);
i1.putExtra("itemPos", position+"");
context.startActivity(i1);
} else {
Intent i2 = new Intent(context, FullTravelReady.class);
i2.putExtra("itemPos", position+"");
context.startActivity(i2);
}
}
}
});
if (d1!=null) {
d1.setOnKeyListener(new Dialog.OnKeyListener() {
@Override
public boolean onKey(DialogInterface arg0, int keyCode,
KeyEvent event) {
// TODO Auto-generated method stub
if (keyCode == KeyEvent.KEYCODE_BACK) {
// context.finish();
myVideoView.stopPlayback();
d1.dismiss();
}
return true;
}
});
}
return v;
}
@Override
public void unregisterDataSetObserver(DataSetObserver observer) {
try {
if (observer != null) {
super.unregisterDataSetObserver(observer);
}
}
catch(Exception e){
}
}
private void setViewHolder(ViewHolder holder) {
// TODO Auto-generated method stub
holder.mpaaRating=(TextView)v.findViewById(R.id.mpaaRating);
holder.mpaaRating1=(TextView)v.findViewById(R.id.mpaaRating1);
holder.title=(TextView)v.findViewById(R.id.title);
holder.duration=(TextView)v.findViewById(R.id.duration);
holder.duration1=(TextView)v.findViewById(R.id.duration1);
holder.genre=(TextView)v.findViewById(R.id.genre);
holder.genre1=(TextView)v.findViewById(R.id.genres1);
holder.title2=(TextView)v.findViewById(R.id.title2);
holder.description2=(TextView)v.findViewById(R.id.description2);
holder.play=(ImageView)v.findViewById(R.id.play);
holder.shortView=(RelativeLayout)v.findViewById(R.id.shortView);
holder.fullView=(LinearLayout)v.findViewById(R.id.fullView);
holder.video=(ImageView)v.findViewById(R.id.video);
holder.video1=(ImageView)v.findViewById(R.id.video1);
holder.circularProgressbar=(ProgressPieView)v.findViewById(R.id.circularProgressbar);
}
class ViewHolder{
TextView mpaaRating,mpaaRating1, title,duration,duration1,title2,description2,genre,genre1;
ProgressPieView circularProgressbar;
ImageView play,video,video1;
RelativeLayout shortView;
LinearLayout fullView;
}
}