我有一个
Android的应用程序,我已经在棒棒糖之前做了一个appwidget,由于某些原因,该小部件不会出现在棒棒糖.然而,它在前棒棒糖设备中出现.
这是我的代码：
AndroidManifest.xml中
<receiver android:name=".widgets.NewsWidgetProvider"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >>
<intent-filter >
<action
android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<Meta-data
android:name="android.appwidget.provider"
android:resource="@xml/news_info" />
</receiver>
news_info.xml
<?xml version="1.0" encoding="utf-8"?> <appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android" android:initialLayout="@layout/widget_news" android:minHeight="72dp" android:minWidth="300dp" android:updatePeriodMillis="6000000" >
NewsWidgetProvider.java
public class NewsWidgetProvider extends AppWidgetProvider {
private static final String NEXT_NEWS = "NEXT_NEWS";
private static final String PREVIoUS_NEWS = "PREVIoUS_NEWS";
private static final String GO_TO_NEWS_ACTIVITY = "GO_TO_NEWS_ACTIVITY";
private final String NEWS_LIST_KEY = "newsList";
NewsItem[] news;
int currentNews=0;
Bitmap imageBitmap;
private final String CURRENT_NEWS_KEY = "currentNews";
@Override
public void onUpdate(final Context context,AppWidgetManager appWidgetManager,final int[] appWidgetIds) {
startService(context);
loadItemFromSharedPreference(context);
for (int widgetId : appWidgetIds) {
setUpView(context,appWidgetManager,appWidgetIds,widgetId);
}
}
@Override
public void onReceive(Context context,Intent intent) {
super.onReceive(context,intent);
loadItemFromSharedPreference(context);
if (news != null) {
if (GO_TO_NEWS_ACTIVITY.equals(intent.getAction())){
openNewsActivity(context);
}
else if (NEXT_NEWS.equals(intent.getAction())) {
if (currentNews == news.length - 1) {
Toast.makeText(context,"reached last news",Toast.LENGTH_SHORT).show();
}
else if (news.length - 1 > currentNews) {
currentNews++;
SharedPreferencesManager.putInteger(context,CURRENT_NEWS_KEY,currentNews);
loadItemFromSharedPreference(context);
setTheCurrentView(context);
}
}
else if (PREVIoUS_NEWS.equals(intent.getAction())) {
if (currentNews == 0) {
Toast.makeText(context,context.getString(R.string.last_item),Toast.LENGTH_SHORT).show();
}
else if (currentNews > 0 && news != null) {
currentNews--;
SharedPreferencesManager.putInteger(context,currentNews);
loadItemFromSharedPreference(context);
setTheCurrentView(context);
}
}
}
}
private void setUpView(Context context,int[] appWidgetIds,int widgetId) {
final RemoteViews remoteViews = new RemoteViews(context.getPackageName(),R.layout.widget_news);
remoteViews.setTextViewText(R.id.title,news==null?context.getString(R.string.wait_msg):news[currentNews].title);
remoteViews.setTextViewText(R.id.brief,news==null?"":news[currentNews].brief);
setPendingIntents(context,remoteViews);
if (news!=null) {
if (imageBitmap!=null) {
AQuery aq = new AQuery(context);
remoteViews.setImageViewBitmap(R.id.image,aq.getCachedImage(news[currentNews].imageUrl,100));
}
else {
remoteViews.setImageViewResource(R.id.image,R.drawable.ic_launcher);
}
}
else {
remoteViews.setImageViewResource(R.id.image,R.drawable.ic_launcher);
}
appWidgetManager.updateAppWidget(widgetId,remoteViews);
}
private void setTheCurrentView(Context context) {
RemoteViews remoteViews = new RemoteViews(context.getPackageName(),R.layout.widget_news);
remoteViews.setTextViewText(R.id.title,news==null?context.getString(R.string.widget_problem_title):news[currentNews].title);
remoteViews.setTextViewText(R.id.brief,news==null?context.getString(R.string.widget_problem_breif):news[currentNews].brief);
remoteViews.setImageViewBitmap(R.id.image,imageBitmap);
ComponentName thisWidget = new ComponentName( context,NewsWidgetProvider.class );
AppWidgetManager.getInstance(context).updateAppWidget( thisWidget,remoteViews );
}
private void openNewsActivity(Context context) {
Intent o=new Intent(context,NewsActivity.class);
o.putExtra(NewsItem.EXTRA_NEWS_ITEM,news[currentNews]);
o.putExtra(NewsItem.EXTRA_NEWS_SOURCE_IS_PUSH_OR_WIDGET,true);
o.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(o);
}
private void setPendingIntents(Context context,RemoteViews remoteViews) {
remoteViews.setOnClickPendingIntent(R.id.next_news,getPendingSelfIntent(context,NEXT_NEWS,appWidgetIds));
remoteViews.setOnClickPendingIntent(R.id.prevIoUs_news,PREVIoUS_NEWS,appWidgetIds));
remoteViews.setOnClickPendingIntent(R.id.title,GO_TO_NEWS_ACTIVITY,appWidgetIds));
remoteViews.setOnClickPendingIntent(R.id.brief,appWidgetIds));
remoteViews.setOnClickPendingIntent(R.id.image,appWidgetIds));
}
protected PendingIntent getPendingSelfIntent(Context context,String action,int[] appWidgetIds) {
Intent intent = new Intent(context,getClass());
intent.setAction(action);
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS,appWidgetIds);
PendingIntent pendingIntent = PendingIntent.getBroadcast(context,intent,0);
return pendingIntent;
}
private void loadItemFromSharedPreference(Context context) {
currentNews=SharedPreferencesManager.getInteger(context,0);
news=SharedPreferencesManager.getObject(context,NEWS_LIST_KEY,NewsItem[].class);
AQuery aq = new AQuery(context);
imageBitmap= news == null ? BitmapFactory.decodeResource(context.getResources(),R.drawable.ic_launcher) : aq.getCachedImage(news[currentNews].imageUrl,200);
}
private void startService(Context context) {
Intent broadcastIntent = new Intent(context,NewsWidgetService.class );
//only start service if news is null
if (SharedPreferencesManager.getObject(context,NewsItem[].class)==null)
context.startService(broadcastIntent);
}
}
代码正在(kitkat,jelly …)工作,但它不能在棒棒糖工作
我错过了什么吗？
解决方法
我有同样的问题 – 我通过添加额外的参数android：widgetCategory =“home_screen”到appwidget-provider修复它：
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
android:minWidth="294dp"
android:minHeight="40dp"
android:updatePeriodMillis="86400000"
android:configure="com.example.activities.ConfigurationActivity"
android:previewImage="@drawable/ic_launcher"
android:initialLayout="@layout/widget_layout"
android:widgetCategory="home_screen"
android:resizeMode="none">
</appwidget-provider>
