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)

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 29岁程序员，3月因学历无情被辞！ 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 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));}}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/6093753/2180161It 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/c6H9Screenshot: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$Item@3e7179c908-08 02:11:10.860 32427-32444/? D/MyWidgetViewsFactory﹕ subitem:0|1|208-08 02:11:10.864 32427-32444/? D/MyWidgetViewsFactory﹕ subitem:3|4|508-08 02:11:10.866 32427-32444/? D/MyWidgetViewsFactory﹕ subitem:6|7|808-08 02:11:10.927 32427-32443/? D/MyWidgetViewsFactory﹕ getViewAt(0):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@3e7179c908-08 02:11:10.927 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:0|1|208-08 02:11:10.927 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:3|4|508-08 02:11:10.927 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:6|7|808-08 02:11:10.931 32427-32443/? D/MyWidgetViewsFactory﹕ getViewAt(1):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@23e248ce08-08 02:11:10.931 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:9|10|1108-08 02:11:10.931 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:12|13|1408-08 02:11:10.931 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:15|16|1708-08 02:11:10.933 32427-32443/? D/MyWidgetViewsFactory﹕ getViewAt(2):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@16dbf3ef08-08 02:11:10.933 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:18|19|2008-08 02:11:10.933 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:21|22|2308-08 02:11:10.933 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:24|25|2608-08 02:11:10.936 32427-32443/? D/MyWidgetViewsFactory﹕ getViewAt(3):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@19d3defc08-08 02:11:10.936 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:27|28|2908-08 02:11:10.936 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:30|31|3208-08 02:11:10.936 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:33|34|3508-08 02:11:10.938 32427-32443/? D/MyWidgetViewsFactory﹕ getViewAt(4):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@ee98508-08 02:11:10.938 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:36|37|3808-08 02:11:10.938 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:39|40|4108-08 02:11:10.938 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:42|43|4408-08 02:11:10.941 32427-32443/? D/MyWidgetViewsFactory﹕ getViewAt(8):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@335e23da08-08 02:11:10.941 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:72|73|7408-08 02:11:10.941 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:75|76|7708-08 02:11:10.941 32427-32443/? D/MyWidgetViewsFactory﹕ subitem:78|79|8008-08 02:11:10.943 32427-32447/? D/MyWidgetViewsFactory﹕ getViewAt(9):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@229de00b08-08 02:11:10.943 32427-32447/? D/MyWidgetViewsFactory﹕ subitem:81|82|8308-08 02:11:10.943 32427-32447/? D/MyWidgetViewsFactory﹕ subitem:84|85|8608-08 02:11:10.943 32427-32447/? D/MyWidgetViewsFactory﹕ subitem:87|88|8908-08 02:11:10.945 32427-32444/? D/MyWidgetViewsFactory﹕ getViewAt(5):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@2afdeee808-08 02:11:10.945 32427-32444/? D/MyWidgetViewsFactory﹕ subitem:45|46|4708-08 02:11:10.945 32427-32444/? D/MyWidgetViewsFactory﹕ subitem:48|49|5008-08 02:11:10.945 32427-32444/? D/MyWidgetViewsFactory﹕ subitem:51|52|5308-08 02:11:10.948 32427-32444/? D/MyWidgetViewsFactory﹕ getViewAt(7):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@1c59990108-08 02:11:10.948 32427-32444/? D/MyWidgetViewsFactory﹕ subitem:63|64|6508-08 02:11:10.948 32427-32444/? D/MyWidgetViewsFactory﹕ subitem:66|67|6808-08 02:11:10.948 32427-32444/? D/MyWidgetViewsFactory﹕ subitem:69|70|7108-08 02:11:10.951 32427-32447/? D/MyWidgetViewsFactory﹕ getViewAt(6):de.mayerhofersimon.listviewproblem.MyWidgetViewsFactory$Item@368aa3a608-08 02:11:10.951 32427-32447/? D/MyWidgetViewsFactory﹕ subitem:54|55|5608-08 02:11:10.951 32427-32447/? D/MyWidgetViewsFactory﹕ subitem:57|58|5908-08 02:11:10.951 32427-32447/? D/MyWidgetViewsFactory﹕ subitem:60|61|62So the data gets passed correct. it just doesn't get correct displayed...BTW: this is what it should look like: http://c.maysi.de/cB8KCould 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: 这篇关于小部件中的 ListView 在滚动和调整大小时随机添加项目(嵌套的远程视图)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！