获取我的主屏幕小部件的大小

Question

我只是想知道我当前的小部件有多大.我找到了很多问题来设置最小尺寸,但我不想设置它.相反,我想显示那些只适合小部件的信息.

如果小部件太小我需要隐藏一些东西,但我需要知道它的大小.我阅读了一些类的源代码AppWidgetProvider,甚至是文档.总有一些关于最小或最大尺寸的参考,但绝不是当前尺寸.

请指出正确的资源.

Answer 1

不幸的是,仍然没有api从AppWidget-Host获取此信息.

您只能获得有关调整大小事件(Android 4.1+)的当前大小信息,并且仅获得支持此功能的启动器(例如Sony XPeria Launcher不支持,以及某些第三方启动器).

我按照这个stackoverflow线程和Android开发者文档:

确定主屏幕的appwidgets空间网格大小

https://developer.android.com/reference/android/appwidget/AppWidgetProvider.html#onAppWidgetOptionsChanged%28android.content.Context,%20android.appwidget.AppWidgetManager,%20int,%20android.os.Bundle%29

这是我的代码,用于确定小部件大小,取自图片日历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,您现在可以使用当前设备方向的DIP中的Widget的当前大小.要知道您的窗口小部件的宽度和高度有多少主屏幕网格单元,您必须将其除以单元格大小.默认值为74dip,但这可能因使用不同的设备或启动器而异.允许更改网格的自定义启动器对于Widget开发人员来说是一件痛苦的事.

在Android <4.1上,无法获取当前的小部件大小.因此,最好将您的API级别设置为JellyBean以避免麻烦.现在应该没问题......两年前,当我开始使用我的Widget应用程序时,这不是一个选项.

获取有关方向更改的通知以重绘窗口小部件是另一个主题.

重要提示:如果您允许用户拥有多个小部件,则必须根据其ID对每个人进行此计算!

Answer 2

这是以像素为单位获取小部件大小的类助手

请注意，您应该使用应用程序上下文，否则小部件旋转时方向将不正确

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()

}