小部件中的 ListView 在滚动和调整大小时随机添加项目(嵌套的远程视图) [英] ListView in widget adds randomly items on scrolling and resizing (nested remoteviews)
本文介绍了小部件中的 ListView 在滚动和调整大小时随机添加项目(嵌套的远程视图)的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
更新:
如您所见，有些项目是随机添加的.(RemoteViews 被添加到另一个 RemoteViews 对象)当我调整小部件的大小时也会发生同样的情况.
我在日志中打印出来的东西和预期的一样.没有错误的数据.滚动时也没有新的日志条目.
这是我的代码:
远程视图工厂:
@TargetApi(Build.VERSION_CODES.HONEYCOMB)公共类 MyWidgetViewsFactory 实现 RemoteViewsService.RemoteViewsFactory {私有静态 ArrayList- 项目 = 新的 ArrayList<>();私有静态 int itemnr = 0;私有静态 int subitemnr = 0;私有 int appWidgetId;私有上下文上下文；公共 MyWidgetViewsFactory(上下文上下文，意图意图){this.context = 上下文；appWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,AppWidgetManager.INVALID_APPWIDGET_ID);//一些要显示的随机数据for (int i = 0; i <10; i++) {Item item = new Item(String.valueOf(itemnr++));for (int j = 0; j <3; j++) {String[] subitem = {String.valueOf(subitemnr++), String.valueOf(subitemnr++), String.valueOf(subitemnr++)};item.addSubitem(subitem);}项目.添加(项目)；}}@覆盖公共无效 onCreate() {//无操作}@覆盖公共无效 onDestroy() {//无操作}@覆盖公共 int getCount() {返回 items.size();}@覆盖公共远程视图 getViewAt(int position) {Log.d("MyWidgetViewsFactory", "getViewAt(" + position + "):" + items.get(position));项目 item = items.get(position);RemoteViews itemView = new RemoteViews(context.getPackageName(), R.layout.widget_listview_item);itemView.setTextViewText(R.id.textView_itemnr, item.getItemNr());for (String[] s : item.getSubitems()) {Log.d("MyWidgetViewsFactory", "subitem:" + s[0] + "|" + s[1] + "|" + s[2]);RemoteViews subitem = new RemoteViews(context.getPackageName(), R.layout.widget_listview_subitem);subitem.setTextViewText(R.id.textView_1, s[0]);subitem.setTextViewText(R.id.textView_2, s[1]);subitem.setTextViewText(R.id.textView_3, s[2]);itemView.addView(R.id.linearLayout_item_body, subitem);}返回项目视图；}@覆盖公共远程视图 getLoadingView() {返回(空)；}@覆盖公共 int getViewTypeCount() {返回 (1);}@覆盖public long getItemId(int position) {返回(位置)；}@覆盖公共布尔 hasStableIds() {返回(真)；}@覆盖公共无效 onDataSetChanged() {//无操作}类项目{私有 ArrayList
subitems = new ArrayList<>();私人字符串 itemnr = "";项目(字符串项目编号){this.itemnr = itemnr;}物品() {}public void addSubitem(String[] subitem) {this.subitems.add(subitem);}公共 ArrayList获取子项(){返回子项；}公共字符串 getItemNr() {退货商品编号；}public void setItemNr(String itemnr) {this.itemnr = itemnr;}}} AppWidgetProvider
public class MyWidgetProvider extends AppWidgetProvider {@TargetApi(Build.VERSION_CODES.HONEYCOMB)@覆盖public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {//可能有多个小部件处于活动状态，因此更新所有小部件Log.d("MyWidgetProvider", "appWidgetIds.lenght:" + appWidgetIds.length);for (int appWidgetId : appWidgetIds) {Intent svcIntent = new Intent(context, MyWidgetService.class);svcIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);RemoteViews widget = new RemoteViews(context.getPackageName(), R.layout.widget_root);if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH)widget.setRemoteAdapter(R.id.listView_widget, svcIntent);别的widget.setRemoteAdapter(appWidgetId, R.id.listView_widget, svcIntent);/*Intent clickIntent = new Intent(context, MainActivity.class);PendingIntent clickPI = PendingIntent.getActivity(context, 0, clickIntent, PendingIntent.FLAG_UPDATE_CURRENT);widget.setPendingIntentTemplate(R.id.listView_widget, clickPI);*/appWidgetManager.updateAppWidget(appWidgetId, widget);}}@覆盖公共无效onEnabled(上下文上下文){//输入创建第一个小部件时的相关功能}@覆盖public void onDisabled(上下文上下文){//输入有关禁用最后一个小部件时的相关功能}}RemoteViewsService
@TargetApi(Build.VERSION_CODES.HONEYCOMB)公共类 MyWidgetService 扩展了 RemoteViewsService {@覆盖public RemoteViewsFactory onGetViewFactory(意图意图){return (new MyWidgetViewsFactory(this.getApplicationContext(), intent));}}<小时>
所有其他资源
Update: I created a repository with less code to make it a bit easier to understand.
I'm trying to create a widget. I made it like described here: https://stackoverflow.com/a/6093753/2180161
It works partially, but I have a really strange bug. I made a screencast, so it's easier to understand what I mean: http://c.maysi.de/c6H9
Screenshot:
As you can see there are some items which were added randomly. (RemoteViews which were added to another RemoteViews object)
The same happens when I resize the widget.
The things I printed out in the log are like expected. there is no wrong data. Also there are no new log entries when I scroll.
This is my code:
RemoteViewsFactory:
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public class MyWidgetViewsFactory implements RemoteViewsService.RemoteViewsFactory {
private static ArrayList<Item> items = new ArrayList<>();
private static int itemnr = 0;
private static int subitemnr = 0;
private int appWidgetId;
private Context context;
public MyWidgetViewsFactory(Context context, Intent intent) {
this.context = context;
appWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
AppWidgetManager.INVALID_APPWIDGET_ID);
//Some random data to display
for (int i = 0; i < 10; i++) {
Item item = new Item(String.valueOf(itemnr++));
for (int j = 0; j < 3; j++) {
String[] subitem = {String.valueOf(subitemnr++), String.valueOf(subitemnr++), String.valueOf(subitemnr++)};
item.addSubitem(subitem);
}
items.add(item);
}
}
@Override
public void onCreate() {
// no-op
}
@Override
public void onDestroy() {
// no-op
}
@Override
public int getCount() {
return items.size();
}
@Override
public RemoteViews getViewAt(int position) {
Log.d("MyWidgetViewsFactory", "getViewAt(" + position + "):" + items.get(position));
Item item = items.get(position);
RemoteViews itemView = new RemoteViews(context.getPackageName(), R.layout.widget_listview_item);
itemView.setTextViewText(R.id.textView_itemnr, item.getItemNr());
for (String[] s : item.getSubitems()) {
Log.d("MyWidgetViewsFactory", "subitem:" + s[0] + "|" + s[1] + "|" + s[2]);
RemoteViews subitem = new RemoteViews(context.getPackageName(), R.layout.widget_listview_subitem);
subitem.setTextViewText(R.id.textView_1, s[0]);
subitem.setTextViewText(R.id.textView_2, s[1]);
subitem.setTextViewText(R.id.textView_3, s[2]);
itemView.addView(R.id.linearLayout_item_body, subitem);
}
return itemView;
}
@Override
public RemoteViews getLoadingView() {
return (null);
}
@Override
public int getViewTypeCount() {
return (1);
}
@Override
public long getItemId(int position) {
return (position);
}
@Override
public boolean hasStableIds() {
return (true);
}
@Override
public void onDataSetChanged() {
// no-op
}
class Item {
private ArrayList<String[]> subitems = new ArrayList<>();
private String itemnr = "";
Item(String itemnr) {
this.itemnr = itemnr;
}
Item() {
}
public void addSubitem(String[] subitem) {
this.subitems.add(subitem);
}
public ArrayList<String[]> getSubitems() {
return subitems;
}
public String getItemNr() {
return itemnr;
}
public void setItemNr(String itemnr) {
this.itemnr = itemnr;
}
}
}
AppWidgetProvider
public class MyWidgetProvider extends AppWidgetProvider {
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
// There may be multiple widgets active, so update all of them
Log.d("MyWidgetProvider", "appWidgetIds.lenght:" + appWidgetIds.length);
for (int appWidgetId : appWidgetIds) {
Intent svcIntent = new Intent(context, MyWidgetService.class);
svcIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
RemoteViews widget = new RemoteViews(context.getPackageName(), R.layout.widget_root);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH)
widget.setRemoteAdapter(R.id.listView_widget, svcIntent);
else
widget.setRemoteAdapter(appWidgetId, R.id.listView_widget, svcIntent);
/*
Intent clickIntent = new Intent(context, MainActivity.class);
PendingIntent clickPI = PendingIntent.getActivity(context, 0, clickIntent, PendingIntent.FLAG_UPDATE_CURRENT);
widget.setPendingIntentTemplate(R.id.listView_widget, clickPI);*/
appWidgetManager.updateAppWidget(appWidgetId, widget);
}
}
@Override
public void onEnabled(Context context) {
// Enter relevant functionality for when the first widget is created
}
@Override
public void onDisabled(Context context) {
// Enter relevant functionality for when the last widget is disabled
}
}
RemoteViewsService
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public class MyWidgetService extends RemoteViewsService {
@Override
public RemoteViewsFactory onGetViewFactory(Intent intent) {
return (new MyWidgetViewsFactory(this.getApplicationContext(), intent));
}
}
all other resources can you find in the repo at GitHub.
Logcat output:
08-08 02:11:10.858 32427-32444/? D/MyWidgetViewsFactory﹕ getViewAt(0):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@3e7179c9
08-08 02:11:10.860 32427-32444/? D/MyWidgetViewsFactory﹕ subitem:0|1|2
08-08 02:11:10.864 32427-32444/? D/MyWidgetViewsFactory﹕ subitem:3|4|5
08-08 02:11:10.866 32427-32444/? D/MyWidgetViewsFactory﹕ subitem:6|7|8
08-08 02:11:10.927 32427-32443/? D/MyWidgetViewsFactory﹕ getViewAt(0):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@3e7179c9
08-08 02:11:10.927 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:0|1|2
08-08 02:11:10.927 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:3|4|5
08-08 02:11:10.927 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:6|7|8
08-08 02:11:10.931 32427-32443/? D/MyWidgetViewsFactory﹕ getViewAt(1):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@23e248ce
08-08 02:11:10.931 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:9|10|11
08-08 02:11:10.931 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:12|13|14
08-08 02:11:10.931 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:15|16|17
08-08 02:11:10.933 32427-32443/? D/MyWidgetViewsFactory﹕ getViewAt(2):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@16dbf3ef
08-08 02:11:10.933 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:18|19|20
08-08 02:11:10.933 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:21|22|23
08-08 02:11:10.933 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:24|25|26
08-08 02:11:10.936 32427-32443/? D/MyWidgetViewsFactory﹕ getViewAt(3):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@19d3defc
08-08 02:11:10.936 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:27|28|29
08-08 02:11:10.936 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:30|31|32
08-08 02:11:10.936 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:33|34|35
08-08 02:11:10.938 32427-32443/? D/MyWidgetViewsFactory﹕ getViewAt(4):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@ee985
08-08 02:11:10.938 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:36|37|38
08-08 02:11:10.938 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:39|40|41
08-08 02:11:10.938 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:42|43|44
08-08 02:11:10.941 32427-32443/? D/MyWidgetViewsFactory﹕ getViewAt(8):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@335e23da
08-08 02:11:10.941 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:72|73|74
08-08 02:11:10.941 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:75|76|77
08-08 02:11:10.941 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:78|79|80
08-08 02:11:10.943 32427-32447/? D/MyWidgetViewsFactory﹕ getViewAt(9):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@229de00b
08-08 02:11:10.943 32427-32447/? D/MyWidgetViewsFactory﹕ subitem:81|82|83
08-08 02:11:10.943 32427-32447/? D/MyWidgetViewsFactory﹕ subitem:84|85|86
08-08 02:11:10.943 32427-32447/? D/MyWidgetViewsFactory﹕ subitem:87|88|89
08-08 02:11:10.945 32427-32444/? D/MyWidgetViewsFactory﹕ getViewAt(5):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@2afdeee8
08-08 02:11:10.945 32427-32444/? D/MyWidgetViewsFactory﹕ subitem:45|46|47
08-08 02:11:10.945 32427-32444/? D/MyWidgetViewsFactory﹕ subitem:48|49|50
08-08 02:11:10.945 32427-32444/? D/MyWidgetViewsFactory﹕ subitem:51|52|53
08-08 02:11:10.948 32427-32444/? D/MyWidgetViewsFactory﹕ getViewAt(7):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@1c599901
08-08 02:11:10.948 32427-32444/? D/MyWidgetViewsFactory﹕ subitem:63|64|65
08-08 02:11:10.948 32427-32444/? D/MyWidgetViewsFactory﹕ subitem:66|67|68
08-08 02:11:10.948 32427-32444/? D/MyWidgetViewsFactory﹕ subitem:69|70|71
08-08 02:11:10.951 32427-32447/? D/MyWidgetViewsFactory﹕ getViewAt(6):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@368aa3a6
08-08 02:11:10.951 32427-32447/? D/MyWidgetViewsFactory﹕ subitem:54|55|56
08-08 02:11:10.951 32427-32447/? D/MyWidgetViewsFactory﹕ subitem:57|58|59
08-08 02:11:10.951 32427-32447/? D/MyWidgetViewsFactory﹕ subitem:60|61|62
So the data gets passed correct. it just doesn't get correct displayed...
BTW: this is what it should look like: http://c.maysi.de/cB8K
Could it be, that the problem is because of nested remoteviews? because all the outer remoteviews are displayed correct...
解决方案
I found the answer myself.
To fix the problem with the weird adding of views on scrolling and resizing you have to call removeAllViews on the Layout where the subviews were added:
@Override
public RemoteViews getViewAt(int position) {
...
RemoteViews itemView = new RemoteViews(context.getPackageName(), R.layout.widget_listview_item);
itemView.removeAllViews(R.id.linearLayout_item_body);
...
return itemView;
}
And the problem that the views are not displayed is because of the color: After adding
subitem.setTextColor(R.id.textView_1, context.getResources().getColor(R.color.abc_primary_text_material_light));
subitem.setTextColor(R.id.textView_2, context.getResources().getColor(R.color.abc_primary_text_material_light));
subitem.setTextColor(R.id.textView_3, context.getResources().getColor(R.color.abc_primary_text_material_light));
all views are displayed:
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