如何在代码中添加小部件到主屏幕
我正在尝试编写一个简单的启动器应用程序。我正在尝试添加一个默认小部件,例如 android 时钟。我正在加载默认小部件的所有信息,例如 x,y 位置,宽度和高度以及包信息。加载后我我正在获取主屏幕的appwidgetId。代码如下。
public void bindAppWidgets(Launcher.DesktopBinder binder,
LinkedList<WidgetInfo> appWidgets) {
if (!appWidgets.isEmpty()) {
for(int k=0;k<appWidgets.size();k++){
final WidgetInfo item = appWidgets.get(k);
System.out.println("Item to be added in the view :::::::::"+item.toString());
int appWidgetId = item.appWidgetId;
if(item.itemType == LauncherProvider.Widgets.ITEM_TYPE_DEFAULT_APPWIDGET){
bindDefaultAppwidgets(item);
continue;
item.appWidgetId=mAppWidgetHost.allocateAppWidgetId();
LauncherModel.updateItemInDatabase(getApplicationContext(), item);
appWidgetId=item.appWidgetId;
}
final AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
System.out.println("the Appwidget info is*******"+appWidgetInfo);
item.hostView =(LauncherAppWidgetHostView) mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
if (LOGD) {
d(TAG, String.format("about to setAppWidget for id=%d, info=%s", appWidgetId,
appWidgetInfo));
}
item.hostView.setAppWidget(appWidgetId, appWidgetInfo);
item.hostView.setTag(item);
MyAbsoluteLayout.LayoutParams lp=new MyAbsoluteLayout.LayoutParams(item.spanX, item.spanY, item.cellX, item.cellY);
System.out.println("after load the hostview ::::::::::: :::::::::"+item.toString());
mDragLayer.addView(item.hostView,lp);
}
mDragLayer.requestLayout();
}
}
现在我在 AppWidgetProviderInfo 中获得小部件的空值。因为我无法在主屏幕中加载主机视图。任何人都可以建议我在不使用 appwidgetpicker 应用程序的情况下在主屏幕中添加小部件吗?
I am trying to write a simple launcher application.In that I am trying to add a default widget like android clock.I am loading all the information of default widgets like x,y positions,width and height and package informations.After loading this I am getting the appwidgetId for the homescreen.The code is like this.
public void bindAppWidgets(Launcher.DesktopBinder binder,
LinkedList<WidgetInfo> appWidgets) {
if (!appWidgets.isEmpty()) {
for(int k=0;k<appWidgets.size();k++){
final WidgetInfo item = appWidgets.get(k);
System.out.println("Item to be added in the view :::::::::"+item.toString());
int appWidgetId = item.appWidgetId;
if(item.itemType == LauncherProvider.Widgets.ITEM_TYPE_DEFAULT_APPWIDGET){
bindDefaultAppwidgets(item);
continue;
item.appWidgetId=mAppWidgetHost.allocateAppWidgetId();
LauncherModel.updateItemInDatabase(getApplicationContext(), item);
appWidgetId=item.appWidgetId;
}
final AppWidgetProviderInfo appWidgetInfo = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
System.out.println("the Appwidget info is*******"+appWidgetInfo);
item.hostView =(LauncherAppWidgetHostView) mAppWidgetHost.createView(this, appWidgetId, appWidgetInfo);
if (LOGD) {
d(TAG, String.format("about to setAppWidget for id=%d, info=%s", appWidgetId,
appWidgetInfo));
}
item.hostView.setAppWidget(appWidgetId, appWidgetInfo);
item.hostView.setTag(item);
MyAbsoluteLayout.LayoutParams lp=new MyAbsoluteLayout.LayoutParams(item.spanX, item.spanY, item.cellX, item.cellY);
System.out.println("after load the hostview ::::::::::: :::::::::"+item.toString());
mDragLayer.addView(item.hostView,lp);
}
mDragLayer.requestLayout();
}
}
Now I am getting null value for the widgets in AppWidgetProviderInfo.because of that I couldn't load the hostview in homescreen.Can any one suggest me to add the widget in home screen with out appwidgetpicker app.
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除非启动器具有特殊权限并且是系统应用程序(将允许其使用此权限),否则无法使用此类功能。
有很多地方都会告诉您同样的信息,只需搜索“bindAppWidgetId”即可。这是一个例子:
将 AppWidget 绑定到 AppWidgetHost - Android
原因是安全。
我认为即使对于您自己的应用程序小部件,您也无法绑定。但是,您始终可以通过创建自定义视图来模仿应用程序小部件。它们比应用程序小部件拥有更多的功能,因此您可以在那里做任何您想做的事情。
such a feature cannot be used unless the launcher has a special permission and is a system app (which will let it to use this permission).
there are plenty of places that will tell you the same , by simply searching for "bindAppWidgetId" . here's an example:
Binding AppWidgets to AppWidgetHost - Android
the reason for this is security .
i think that even for your own app widgets , you cannot bind . however, you can always mimic the app-widgets by creating custom views instead. they have much more power than appwidgets , so you can do anything you wish there.