我目前正在开发一个小工具，该工具可以算到开学的时间。我已经对其进行了测试，并且一切都与一件事无关。小部件中的文本不会更改
这是我的代码（BGSWidgetProvider.java）：
包com.bordengrammar.bordengrammarapp;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.ComponentName;
import android.content.Context;
import android.widget.RemoteViews;
import com.bordengrammar.bordengrammarapp.utils.ut;
import java.util.Calendar;
import java.util.Timer;
import java.util.TimerTask;
public class BGSWidgetProvider extends AppWidgetProvider {
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
Timer timer = new Timer();
timer.scheduleAtFixedRate(new MyTime(context, appWidgetManager), 1, 1000);
}
private class MyTime extends TimerTask {
RemoteViews remoteViews;
AppWidgetManager appWidgetManager;
ComponentName thisWidget;
public MyTime(Context context, AppWidgetManager appWidgetManager) {
this.appWidgetManager = appWidgetManager;
remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget_layout);
thisWidget = new ComponentName(context, BGSWidgetProvider.class);
}
@Override
public void run() {
remoteViews.setTextViewText(R.id.hours, hour());
remoteViews.setTextViewText(R.id.minutes, minutes());
ut.logIt(minutes());
ut.logIt(hour());
appWidgetManager.updateAppWidget(thisWidget, remoteViews);
}
public String hour() {
/*
* Work out whether tommorow is right day, (Right meaning mon-fri)
* If it is work out the amount of hours and minutes until 8.30am tommorow
* Else work out how many days, hours and minutes until monday 8.30am
*
*/
String result;
Calendar now = Calendar.getInstance();
int currentDay = now.get(Calendar.DAY_OF_WEEK);
Calendar school = Calendar.getInstance();
school.add(Calendar.DAY_OF_YEAR, 1);
if (currentDay == Calendar.SATURDAY)
{
school.add(Calendar.DAY_OF_YEAR, 1);
}
else if (currentDay == Calendar.FRIDAY)
{
school.add(Calendar.DAY_OF_YEAR, 2);
}
school.set(Calendar.HOUR_OF_DAY, 8);
school.set(Calendar.MINUTE, 30);
long millisLeft = school.getTimeInMillis() - now.getTimeInMillis();
long hoursLeft = millisLeft / (60 * 60 * 1000);
String hours = Long.toString(hoursLeft);
return hours;
}
public String minutes() {
/*
* Work out whether tommorow is right day, (Right meaning mon-fri)
* If it is work out the amount of hours and minutes until 8.30am tommorow
* Else work out how many days, hours and minutes until monday 8.30am
*
*/
Calendar now = Calendar.getInstance();
int currentDay = now.get(Calendar.DAY_OF_WEEK);
Calendar school = Calendar.getInstance();
school.add(Calendar.DAY_OF_YEAR, 1);
if (currentDay == Calendar.SATURDAY)
{
school.add(Calendar.DAY_OF_YEAR, 1);
}
else if (currentDay == Calendar.FRIDAY)
{
school.add(Calendar.DAY_OF_YEAR, 2);
}
school.set(Calendar.HOUR_OF_DAY, 8);
school.set(Calendar.MINUTE, 30);
long millisLeft = school.getTimeInMillis() - now.getTimeInMillis();
long minutesLeft = (millisLeft % (60 * 60 * 1000)) / (60 * 1000);
String minutes = Long.toString(minutesLeft);
return minutes;
}
}
我的布局（widget_layout.xml）：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/layout"
android:orientation="horizontal"
android:layout_width="250dp"
android:layout_height="72dp"
android:background="@color/bordenpurple">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="10"
android:textSize="60dp"
android:paddingTop="5dp"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:textColor="@color/bordenyellow"
android:typeface="sans"
android:id="@+id/hours"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Hours"
android:id="@+id/textView"
android:textColor="@color/bordenyellow"
android:padding="5dp"
android:layout_marginLeft="-10dp"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="10"
android:textSize="60dp"
android:paddingTop="5dp"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:textColor="@color/bordenyellow"
android:typeface="sans"
android:id="@+id/minutes"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Minutes"
android:id="@+id/textView3"
android:textColor="@color/bordenyellow"
android:padding="5dp"
android:layout_marginLeft="-7dp"
/>
</LinearLayout>
如您所见，我将log语句放入run方法中以测试我的代码，它可以正常工作，这是我的logcat：
05-03 18:24:30.874 8011-8029/com.bordengrammar.bordengrammarapp E/Logger﹕ 38
05-03 18:24:31.878 8011-8029/com.bordengrammar.bordengrammarapp E/Logger﹕ 6
05-03 18:24:31.878 8011-8029/com.bordengrammar.bordengrammarapp E/Logger﹕ 38
05-03 18:24:32.878 8011-8029/com.bordengrammar.bordengrammarapp E/Logger﹕ 6
05-03 18:24:32.878 8011-8029/com.bordengrammar.bordengrammarapp E/Logger﹕ 38
05-03 18:24:33.878 8011-8029/com.bordengrammar.bordengrammarapp E/Logger﹕ 6
05-03 18:24:33.878 8011-8029/com.bordengrammar.bordengrammarapp E/Logger﹕ 38
05-03 18:24:34.878 8011-8029/com.bordengrammar.bordengrammarapp E/Logger﹕ 6
05-03 18:24:34.878 8011-8029/com.bordengrammar.bordengrammarapp E/Logger﹕ 38
05-03 18:24:35.874 8011-8029/com.bordengrammar.bordengrammarapp E/Logger﹕ 6
05-03 18:24:35.874 8011-8029/com.bordengrammar.bordengrammarapp E/Logger﹕ 38
05-03 18:24:36.878 8011-8029/com.bordengrammar.bordengrammarapp E/Logger﹕ 6
05-03 18:24:36.878 8011-8029/com.bordengrammar.bordengrammarapp E/Logger﹕ 38
我不知道如何解决此问题，我们将不胜感激！
切勿Timer在小部件中使用。AnAppWidgetProvider是a BroadcastReceiver，它的意思是仅在很短的时间内保持活动状态以处理接收到的广播意图，然后可以在处理了广播并且onUpdate()方法返回后的任何时候将其销毁（但是窗口小部件将保持可见状态）课程）。
Android通常会每30分钟调用一次小部件更新代码，因此您不必担心手动刷新它，而只需将显示代码（当前输入run()）移至即可onUpdate()。
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