我只想知道我当前的小部件有多大。我发现了很多问题来设置最小大小，但是我不想设置它。相反，我想显示仅适合小部件的信息。
如果小部件太小，我需要隐藏一些东西，但是我需要知道它的大小。我阅读了AppWidgetProvider之类的某些类的源代码，甚至是文档。总是有关于最小或最大大小的参考，而没有当前大小的参考。
请向我指出正确的资源。
不幸的是，仍然没有API可从The AppWidget-Host获取此信息。
[您仅获得有关调整大小事件的当前大小信息（Android 4.1+），并且仅从支持此大小的启动器（例如，Sony XPeria Launcher以及某些第三方启动器）获取。
我遵循了这个stackoverflow线程和Android开发人员文档：
Determine the homescreen's appwidgets space grid size
这是我确定小部件尺寸的代码，取自Picture Calendar 2014（Play商店）：
/* Get Device and Widget orientation.
This is done by adding a boolean value to
a port resource directory like values-port/bools.xml */
mIsPortraitOrientation = getResources().getBoolean(R.bool.isPort);
// Get min dimensions from provider info
AppWidgetProviderInfo providerInfo = AppWidgetManager.getInstance(
getApplicationContext()).getAppWidgetInfo(appWidgetId);
// Since min and max is usually the same, just take min
mWidgetLandWidth = providerInfo.minWidth;
mWidgetPortHeight = providerInfo.minHeight;
mWidgetPortWidth = providerInfo.minWidth;
mWidgetLandHeight = providerInfo.minHeight;
// Get current dimensions (in DIP, scaled by DisplayMetrics) of this
// Widget, if API Level allows to
mAppWidgetOptions = null;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN)
mAppWidgetOptions = getAppWidgetoptions(mAppWidgetManager,
appWidgetId);
if (mAppWidgetOptions != null
&& mAppWidgetOptions
.getInt(AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH) > 0) {
if (D.DEBUG_SERVICE)
Log.d(TAG,
"appWidgetOptions not null, getting widget sizes...");
// Reduce width by a margin of 8dp (automatically added by
// Android, can vary with third party launchers)
/* Actually Min and Max is a bit irritating,
because it depends on the homescreen orientation
whether Min or Max should be used: */
mWidgetPortWidth = mAppWidgetOptions
.getInt(AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH);
mWidgetLandWidth = mAppWidgetOptions
.getInt(AppWidgetManager.OPTION_APPWIDGET_MAX_WIDTH);
mWidgetLandHeight = mAppWidgetOptions
.getInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT);
mWidgetPortHeight = mAppWidgetOptions
.getInt(AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT);
// Get the value of OPTION_APPWIDGET_HOST_CATEGORY
int category = mAppWidgetOptions.getInt(AppWidgetManager.OPTION_APPWIDGET_HOST_CATEGORY, -1);
// If the value is WIDGET_CATEGORY_KEYGUARD, it's a lockscreen
// widget (dumped with Android-L preview :-( ).
mIsKeyguard = category == AppWidgetProviderInfo.WIDGET_CATEGORY_KEYGUARD;
} else {
if (D.DEBUG_SERVICE)
Log.d(TAG,
"No AppWidgetOptions for this widget, using minimal dimensions from provider info!");
// For some reason I had to set this again here, may be obsolete
mWidgetLandWidth = providerInfo.minWidth;
mWidgetPortHeight = providerInfo.minHeight;
mWidgetPortWidth = providerInfo.minWidth;
mWidgetLandHeight = providerInfo.minHeight;
}
if (D.DEBUG_SERVICE)
Log.d(TAG, "Dimensions of the Widget in DIP: portWidth = "
+ mWidgetPortWidth + ", landWidth = " + mWidgetLandWidth
+ "; landHeight = " + mWidgetLandHeight
+ ", portHeight = " + mWidgetPortHeight);
// If device is in port oriantation, use port sizes
mWidgetWidthPerOrientation = mWidgetPortWidth;
mWidgetHeightPerOrientation = mWidgetPortHeight;
if (!mIsPortraitOrientation)
{
// Not Portrait, so use landscape sizes
mWidgetWidthPerOrientation = mWidgetLandWidth;
mWidgetHeightPerOrientation = mWidgetLandHeight;
}
在Android 4.1+上，您现在具有DIP中小部件的当前大小（用于当前设备方向）。要知道您的窗口小部件有多少个主屏幕网格单元，您必须将其除以单元格大小。默认值为74dip，但这可能会因使用不同的设备或启动器而有所不同。允许更改网格的自定义启动器对于Widget开发人员来说是一个痛苦的过程。
在Android <4.1上，无法获取当前小部件的大小。因此，最好将API级别设置为JellyBean以避免麻烦。现在应该可以...两年前，当我开始使用Widget App时，这是没有选择的。
获得有关方向更改的通知以重新绘制窗口小部件是另一个主题。
重要：如果您允许用户拥有自己的多个小部件，则必须根据他们的ID对每个人进行此计算！
您可以将方法添加到窗口小部件提供程序，并在从API 16：开始为所有版本的Android调整大小时获取窗口小部件的大小。
@Override
public void onAppWidgetOptionsChanged (Context context, AppWidgetManager appWidgetManager, int appWidgetId, Bundle widgetInfo) {
int width = widgetInfo.getInt (AppWidgetManager.OPTION_APPWIDGET_MAX_WIDTH);
int height = widgetInfo.getInt (AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT);
}
对于新添加的小部件，您可以通过从其布局中获取其大小并将其乘以其cols num来获得其特色：
AppWidgetProviderInfo widgetInfo = AppWidgetManager.getInstance (context).getAppWidgetInfo (widgetId);
private int getColsNum (int size) {
return (int) Math.floor ((size - 30) / 70);
}
public int getWidthColsNum () {
return getColsNum (widgetInfo.minWidth);
}
public int getHeightColsNum () {
return getColsNum (widgetInfo.minHeight);
}
int width = widgetInfo.minWidth * getWidthColsNum ();
int height = widgetInfo.minHeight * getHeightColsNum ();
获取小部件列数是从官方Android guidelines中获取的。
获取列数/行数（科特林）：
val options = appWidgetManager.getAppWidgetOptions(appWidgetId)
val minHeight = options.getInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT)
val maxHeight = options.getInt(AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT)
val oneCellHeight = ViewExtensions.convertDpToPx(40f * 1, context).toInt() - (30 * 1)
val twoCellHeight = ViewExtensions.convertDpToPx(40f * 2, context).toInt() - (30 * 2)
val threeCellHeight = ViewExtensions.convertDpToPx(40f * 3, context).toInt() - (30 * 3)
val fourCellHeight = ViewExtensions.convertDpToPx(40f * 4, context).toInt() - (30 * 4)
when {
oneCellHeight in (minHeight..maxHeight) -> {
// 1 cell
}
twoCellHeight in (minHeight..maxHeight) -> {
// 2 cells
}
threeCellHeight in (minHeight..maxHeight) -> {
// 3 cells
}
fourCellHeight in (minHeight..maxHeight) -> {
// 4 cells
}
else -> {
// More
}
}
class ViewExtensions {
companion object {
fun convertDpToPx(sp: Float, context: Context): Float {
return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, sp, context.resources.displayMetrics)
}
}
}
基于，该1个单元格= 40dp
这里是类帮助器，以像素为单位获取小部件的大小
请注意，您应该使用应用程序上下文，否则在旋转小部件时方向将不正确
class WidgetSizeProvider(
private val context: Context // Do not pass Application context
) {
private val appWidgetManager = AppWidgetManager.getInstance(context)
fun getWidgetsSize(widgetId: Int): Pair<Int, Int> {
val isPortrait = context.resources.configuration.orientation == ORIENTATION_PORTRAIT
val width = getWidgetWidth(isPortrait, widgetId)
val height = getWidgetHeight(isPortrait, widgetId)
val widthInPx = context.dip(width)
val heightInPx = context.dip(height)
return widthInPx to heightInPx
}
private fun getWidgetWidth(isPortrait: Boolean, widgetId: Int): Int =
if (isPortrait) {
getWidgetSizeInDp(widgetId, AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH)
} else {
getWidgetSizeInDp(widgetId, AppWidgetManager.OPTION_APPWIDGET_MAX_WIDTH)
}
private fun getWidgetHeight(isPortrait: Boolean, widgetId: Int): Int =
if (isPortrait) {
getWidgetSizeInDp(widgetId, AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT)
} else {
getWidgetSizeInDp(widgetId, AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT)
}
private fun getWidgetSizeInDp(widgetId: Int, key: String): Int =
appWidgetManager.getAppWidgetOptions(widgetId).getInt(key, 0)
private fun Context.dip(value: Int): Int = (value * resources.displayMetrics.density).toInt()
}