我一直试图通过点击小部件打开我的应用程序数周，但似乎没有任何效果。我认为关于我的代码的一些事情会让我的情况与众不同。我的小部件只是一个包含任务的列表。我将发布整个课程，以便人们可以看到正在发生的事情。
有人可以帮帮我吗？
ListProvider：
public class ListProvider implements RemoteViewsService.RemoteViewsFactory {
private ArrayList<ListObject> listObjectList = new ArrayList<ListObject>();
private Context context = null;
private TinyDB tinyDB;
private ArrayList<Integer> checkedPositions = new ArrayList<>();
public ListProvider(Context context, Intent intent) {
this.context = context;
populateWidget();
}
private void populateWidget() {
if(MainActivity.user != null) {
checkedPositions.clear();
for(int i = 0; i < MainActivity.user.getTaskLists().size(); i++){
TaskList taskList = MainActivity.user.getTaskLists().get(i);
listObjectList.add(new ListTitle(taskList.getName()));
for (int j = 0; j < taskList.getTasks().size(); j++) {
ListItem listItem = new ListItem();
listItem.text = taskList.getTasks().get(j).getTitle();
listObjectList.add(listItem);
if(taskList.getTasks().get(j).isChecked()){
//if task is checked, add to checked list
checkedPositions.add(listObjectList.size() - 1);
}
}
listObjectList.add(new ListItem(" "));
}
}else{
loadLastSavedList();
}
}
@Override
public int getCount() {
return listObjectList.size();
}
@Override
public long getItemId(int position) {
return position;
}
/*
*Similar to getView of Adapter where instead of View
*we return RemoteViews
*
*/
@Override
public RemoteViews getViewAt(int position) {
RemoteViews remoteView = new RemoteViews(
context.getPackageName(), R.layout.widget_list_item);
ListObject listObject = listObjectList.get(position);
//get whether item is a item or title
if(listObject.getClass().equals(ListItem.class)) {
//list item
ListItem listItem = (ListItem) listObject;
remoteView.setTextViewText(R.id.title, "");
remoteView.setTextViewText(R.id.text, listItem.text);
}else{
//list title
ListTitle listTitle = (ListTitle) listObject;
remoteView.setTextViewText(R.id.text, "");
remoteView.setTextViewText(R.id.title, listTitle.title);
}
//text size
SharedPreferences SP = PreferenceManager.getDefaultSharedPreferences(context.getApplicationContext());
String textSize = SP.getString(context.getString(R.string.widget_pref_key_text_size), context.getString(R.string.medium));
System.out.println(textSize);
if (textSize.equals(context.getString(R.string.small))) {
//small
remoteView.setTextViewTextSize(R.id.text, TypedValue.COMPLEX_UNIT_SP, 14);
remoteView.setTextViewTextSize(R.id.title, TypedValue.COMPLEX_UNIT_SP, 16);
} else if (textSize.equals(context.getString(R.string.large))) {
//large
remoteView.setTextViewTextSize(R.id.text, TypedValue.COMPLEX_UNIT_SP, 22);
remoteView.setTextViewTextSize(R.id.title, TypedValue.COMPLEX_UNIT_SP, 24);
} else {
//medium, default
remoteView.setTextViewTextSize(R.id.text, TypedValue.COMPLEX_UNIT_SP, 18);
remoteView.setTextViewTextSize(R.id.title, TypedValue.COMPLEX_UNIT_SP, 20);
}
//strikethrough if checked
if(checkedPositions.contains(position)){
remoteView.setInt(R.id.text, "setPaintFlags", Paint.STRIKE_THRU_TEXT_FLAG | Paint.ANTI_ALIAS_FLAG);
}else{
remoteView.setInt(R.id.text, "setPaintFlags", (~ Paint.STRIKE_THRU_TEXT_FLAG) & Paint.ANTI_ALIAS_FLAG);
}
return remoteView;
}
@Override
public RemoteViews getLoadingView() {
return null;
}
@Override
public int getViewTypeCount() {
return 1;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public void onCreate() {
loadLastSavedList();
}
private void loadLastSavedList() {
//load up saved items
tinyDB = new TinyDB(context);
ArrayList<String> strings = tinyDB.getListString(context.getString(R.string.saved_key));
System.out.println(strings.size());
//full up listItems
for(int i = 0; i < strings.size(); i++) {
if(i == 0){
//first object, title
listObjectList.add(new ListTitle(strings.get(i)));
}else if(strings.get(i - 1).equals(" ")){
//title
listObjectList.add(new ListTitle(strings.get(i)));
}else{
//list item
listObjectList.add(new ListItem(strings.get(i)));
}
}
}
@Override
public void onDataSetChanged() {
listObjectList.clear();
populateWidget();
//save list items
ArrayList<String> strings = new ArrayList<>();
for(ListObject listObject: listObjectList){
if(listObject.getClass().equals(ListItem.class)) {
//list item
ListItem listItem = (ListItem) listObject;
strings.add(listItem.text);
}else{
//list title
ListTitle listTitle = (ListTitle) listObject;
strings.add(listTitle.title);
}
}
tinyDB = new TinyDB(context);
tinyDB.putListString(context.getString(R.string.saved_key), strings);
}
@Override
public void onDestroy() {
}
}
WidgetProvider：
public class WidgetProvider extends AppWidgetProvider {
/**
* this method is called every 30 mins as specified on widgetinfo.xml
* this method is also called on every phone reboot
**/
@Override
public void onUpdate(Context context, AppWidgetManager
appWidgetManager, int[] appWidgetIds) {
/*int[] appWidgetIds holds ids of multiple instance
* of your widget
* meaning you are placing more than one widgets on
* your homescreen*/
final int N = appWidgetIds.length;
for (int i = 0; i < N; i++) {
RemoteViews remoteViews = updateWidgetListView(context,
appWidgetIds[i]);
appWidgetManager.updateAppWidget(appWidgetIds[i],
remoteViews);
}
super.onUpdate(context, appWidgetManager, appWidgetIds);
}
private RemoteViews updateWidgetListView(Context context,
int appWidgetId) {
//which layout to show on widget
RemoteViews remoteViews = new RemoteViews(
context.getPackageName(), R.layout.widget_layout);
//RemoteViews Service needed to provide adapter for ListView
Intent svcIntent = new Intent(context, WidgetService.class);
//passing app widget id to that RemoteViews Service
svcIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
//setting a unique Uri to the intent
//don't know its purpose to me right now
svcIntent.setData(Uri.parse(
svcIntent.toUri(Intent.URI_INTENT_SCHEME)));
//setting adapter to listview of the widget
remoteViews.setRemoteAdapter(appWidgetId, R.id.listViewWidget,
svcIntent);
//setting an empty view in case of no data
remoteViews.setEmptyView(R.id.listViewWidget, R.id.empty_view);
return remoteViews;
}
}
提前致谢！
答案 0 :(得分：2)
当用户点击列表项时，您没有任何代码告诉Android您希望执行任何操作。
在getViewAt()中，您需要创建一个Intent，用附加内容填充它（例如，识别与此列表行关联的数据），并在{{setOnClickFillInIntent()上调用RemoteViews 1}}应该响应click事件。
然后，在onUpdate()的{{1}}中，您需要致电AppWidgetProvider setPendingIntentTemplate()，RemoteViews（或ListView或者你正在使用的任何内容），当StackView包裹PendingIntent以填充Intent并在用户点击ListView中的项目时调用。
This sample app通过创建一个应用小部件来展示这一点，该小部件显示了25个拉丁单词的列表，并对每个单词的点击做出响应。