复活节快乐
并提前非常感谢您的帮助。
我有一个应用程序小部件，每 1 分钟通过服务更新一次。
该服务需要几秒钟来更新小部件，因为它从互联网收集数据。
问题在于，在更新期间，App Widget 本身会在几秒钟内被完全不同的图像替换（请参见下面的图像），然后它会返回其正常状态。
这是小部件的正常外观：
这是更新期间发生的事情！
几秒钟后一切又好了：
请就如何避免这种情况提出任何建议，非常欢迎！！
我曾尝试以某人在这篇文章中所做的方式自我停止服务：Android Widget 在更新期间显示奇怪的图像
但没有成功。
这是更新 App Widget 的服务的全部代码（我怀疑它会不会有很大帮助）
public class UpdateService extends Service {
public RemoteViews updateViews;
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.e("", "onStartCommand di AppWidget");
int[] appWidgetIds = intent.getIntArrayExtra("widgetsids");
final int N = appWidgetIds.length;
AppWidgetManager manager = AppWidgetManager.getInstance(this);
// Perform this loop procedure for each App Widget that belongs to
// this provider
for (int i = 0; i < N; i++) {
int appWidgetId = appWidgetIds[i];
Log.e("", "i=" + Integer.toString(i) + " di " + Integer.toString(N));
RemoteViews view = buildUpdate(getApplicationContext(),
appWidgetIds);
// Tell the AppWidgetManager to perform an update on the current
// app widget
manager.updateAppWidget(appWidgetId, view);
}
stopSelf();
Log.e("","stoopo il service");
return (START_STICKY);
}
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
private RemoteViews buildUpdate(Context ctxt, int[] appWidgetIds) {
updateViews = new RemoteViews(ctxt.getPackageName(), R.layout.widget);
Log.e("", "invoco buildbpdate");
Intent intent = new Intent(ctxt, AppWidgetConfigure.class);
PendingIntent pendingIntent = PendingIntent.getActivity(ctxt, 0,
intent, 0);
updateViews.setOnClickPendingIntent(R.id.Widgetbackground,
pendingIntent);
DatabaseHandler db = new DatabaseHandler(getApplicationContext());
ArrayList<Stock> list = db.getAllStocks();
if (!list.isEmpty())
Collections.sort(list, new Comparator<Stock>() {
public int compare(Stock s1, Stock s2) {
return s1.getName().compareToIgnoreCase(s2.getName());
}
});
Log.e("", "inizio ad aggiornare");
// PRIMO
if (list.size() >= 1) {
String nome = list.get(0).getName();
if (nome.length() >= 12)
nome = nome.substring(0, 12);
updateViews.setTextViewText(R.id.name1, nome);
Log.e("list.get(1).getName()", list.get(0).getName());
UpdateTaskPrice up = new UpdateTaskPrice();
up.execute(list.get(0).getSymbol(), null, null);
String res = "";
try {
res = up.get();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.e("risultato di get è ", res);
updateViews.setTextViewText(R.id.price1, res);
UpdateTaskChange chn = new UpdateTaskChange();
chn.execute(list.get(0).getSymbol(), null, null);
String reschn = "";
try {
reschn = chn.get();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.e("risultato di get è ", reschn);
updateViews.setTextViewText(R.id.change1, reschn+"%");
if (Float.valueOf(reschn) < 0) {
updateViews.setTextViewText(R.id.arrow1, "\u25BC");
updateViews.setTextColor(R.id.change1, Color.RED);
updateViews.setTextColor(R.id.arrow1, Color.RED);
}
if (Float.valueOf(reschn) > 0) {
updateViews.setTextViewText(R.id.arrow1, "\u25B2");
updateViews.setTextColor(R.id.change1, Color.GREEN);
updateViews.setTextColor(R.id.arrow1, Color.GREEN);
}
}
Log.e("", "faccio primo giro di aggiornamento");
// SECONDO
if (list.size() >= 2) {
String nome = list.get(1).getName();
if (nome.length() >= 12)
nome = nome.substring(0, 12);
updateViews.setTextViewText(R.id.name2, nome);
UpdateTaskPrice up = new UpdateTaskPrice();
up.execute(list.get(1).getSymbol(), null, null);
String res = "";
try {
res = up.get();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.e("risultato di get è ", res);
updateViews.setTextViewText(R.id.price2, res);
UpdateTaskChange chn = new UpdateTaskChange();
chn.execute(list.get(1).getSymbol(), null, null);
String reschn = "";
try {
reschn = chn.get();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.e("risultato di get è ", reschn);
updateViews.setTextViewText(R.id.change2, reschn+"%");
if (Float.valueOf(reschn) < 0) {
updateViews.setTextViewText(R.id.arrow2, "\u25BC");
updateViews.setTextColor(R.id.change2, Color.RED);
updateViews.setTextColor(R.id.arrow2, Color.RED);
}
if (Float.valueOf(reschn) > 0) {
updateViews.setTextViewText(R.id.arrow2, "\u25B2");
updateViews.setTextColor(R.id.change2, Color.GREEN);
updateViews.setTextColor(R.id.arrow2, Color.GREEN);
}
}
// TERZO
if (list.size() >= 3) {
String nome = list.get(2).getName();
if (nome.length() >= 12)
nome = nome.substring(0, 12);
updateViews.setTextViewText(R.id.name3, nome);
UpdateTaskPrice up = new UpdateTaskPrice();
up.execute(list.get(2).getSymbol(), null, null);
String res = "";
try {
res = up.get();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.e("risultato di get è ", res);
updateViews.setTextViewText(R.id.price3, res);
UpdateTaskChange chn = new UpdateTaskChange();
chn.execute(list.get(2).getSymbol(), null, null);
String reschn = "";
try {
reschn = chn.get();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.e("risultato di get è ", reschn);
updateViews.setTextViewText(R.id.change3, reschn+"%");
if (Float.valueOf(reschn) < 0) {
updateViews.setTextViewText(R.id.arrow3, "\u25BC");
updateViews.setTextColor(R.id.change3, Color.RED);
updateViews.setTextColor(R.id.arrow3, Color.RED);
}
if (Float.valueOf(reschn) > 0) {
updateViews.setTextViewText(R.id.arrow3, "\u25B2");
updateViews.setTextColor(R.id.change3, Color.GREEN);
updateViews.setTextColor(R.id.arrow3, Color.GREEN);
}
}
// QUARTO
if (list.size() >= 4) {
String nome = list.get(3).getName();
if (nome.length() >= 12)
nome = nome.substring(0, 12);
updateViews.setTextViewText(R.id.name4, nome);
UpdateTaskPrice up = new UpdateTaskPrice();
up.execute(list.get(3).getSymbol(), null, null);
String res = "";
try {
res = up.get();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.e("risultato di get è ", res);
updateViews.setTextViewText(R.id.price4, res);
UpdateTaskChange chn = new UpdateTaskChange();
chn.execute(list.get(3).getSymbol(), null, null);
String reschn = "";
try {
reschn = chn.get();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.e("risultato di get è ", reschn);
updateViews.setTextViewText(R.id.change4, reschn+"%");
if (Float.valueOf(reschn) < 0) {
updateViews.setTextViewText(R.id.arrow4, "\u25BC");
updateViews.setTextColor(R.id.change4, Color.RED);
updateViews.setTextColor(R.id.arrow4, Color.RED);
}
if (Float.valueOf(reschn) > 0) {
updateViews.setTextViewText(R.id.arrow4, "\u25B2");
updateViews.setTextColor(R.id.change4, Color.GREEN);
updateViews.setTextColor(R.id.arrow4, Color.GREEN);
}
}
// QUINTO
if (list.size() >= 5) {
String nome = list.get(4).getName();
if (nome.length() >= 12)
nome = nome.substring(0, 12);
updateViews.setTextViewText(R.id.name5, nome);
UpdateTaskPrice up = new UpdateTaskPrice();
up.execute(list.get(4).getSymbol(), null, null);
String res = "";
try {
res = up.get();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.e("risultato di get è ", res);
updateViews.setTextViewText(R.id.price5, res);
UpdateTaskChange chn = new UpdateTaskChange();
chn.execute(list.get(4).getSymbol(), null, null);
String reschn = "";
try {
reschn = chn.get();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.e("risultato di get è ", reschn);
updateViews.setTextViewText(R.id.change5, reschn+"%");
if (Float.valueOf(reschn) < 0) {
updateViews.setTextViewText(R.id.arrow5, "\u25BC");
updateViews.setTextColor(R.id.change5, Color.RED);
updateViews.setTextColor(R.id.arrow5, Color.RED);
}
if (Float.valueOf(reschn) > 0) {
updateViews.setTextViewText(R.id.arrow5, "\u25B2");
updateViews.setTextColor(R.id.change5, Color.GREEN);
updateViews.setTextColor(R.id.arrow5, Color.GREEN);
}
}
return (updateViews);
}
public class UpdateTaskPrice extends AsyncTask<String, String, String> {
public String res;
@Override
protected void onProgressUpdate(String... progress) {
}
@Override
protected void onPostExecute(String result) {
}
@Override
protected String doInBackground(String... symbol) {
Log.e("", "Passo per doinbabground");
String result = "";
DefaultHttpClient client = new DefaultHttpClient();
String srt = "";
String url = getApplicationContext().getString(
R.string.urlaternativo).concat(symbol[0]);
HttpGet getMethod = new HttpGet(url);
try {
ResponseHandler<String> responseHandler = new BasicResponseHandler();
srt = client.execute(getMethod, responseHandler);
int inizio = srt.indexOf("<last data=\"");
int fine = srt.indexOf("\"/>", inizio + 12);
result = srt.substring(inizio + 12, fine);
} catch (Throwable t) {
// Log.e("ERROR", "ERROR", t);
}
Log.e("", "finisco per doinbabground");
return result;
}
}
public class UpdateTaskChange extends AsyncTask<String, String, String> {
public String res;
@Override
protected void onProgressUpdate(String... progress) {
}
@Override
protected void onPostExecute(String result) {
}
@Override
protected String doInBackground(String... symbol) {
Log.e("", "Passo per doinbabground");
String result = "";
DefaultHttpClient client = new DefaultHttpClient();
String srt = "";
String url = getApplicationContext().getString(
R.string.urlaternativo).concat(symbol[0]);
HttpGet getMethod = new HttpGet(url);
try {
ResponseHandler<String> responseHandler = new BasicResponseHandler();
srt = client.execute(getMethod, responseHandler);
int inizio = srt.indexOf("<perc_change data=\"");
int fine = srt.indexOf("\"/>", inizio + 19);
result = srt.substring(inizio + 19, fine);
} catch (Throwable t) {
// Log.e("ERROR", "ERROR", t);
}
Log.e("", "finisco per doinbabground");
return result;
}
}
}
多谢！！！