如何使用 AppWidgetHostView 在 android 应用程序上调整小部件的大小？

Question

我创建了一个具有小部件的应用程序。我想调整小部件的大小，但它不起作用。 小部件大小在 w/ 和 w/o 之间不会改变 widgetView.updateAppWidgetSize(options, 100, 100, 200, 200)。为什么 updateAppWidgetSize 不起作用？如何更改小部件大小？

主活动：

class MainActivity : AppCompatActivity() {

    private lateinit var appWidgetManager: AppWidgetManager
    private lateinit var appWidegetHost: AppWidgetHost

    private val REQUEST_BIND_APPWIDGET = 1

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        appWidgetManager = AppWidgetManager.getInstance(this)
        appWidegetHost = AppWidgetHost(this, 12345).apply {
            startListening()
        }

        val appWidgetId = appWidegetHost.allocateAppWidgetId()
        val appWidgetInfo = appWidgetManager.installedProviders.get(5)

        if (appWidgetManager.bindAppWidgetIdIfAllowed(appWidgetId, appWidgetInfo.provider)) {
            addAppWidget(appWidgetId, appWidgetInfo)
        } else {
            val intent = Intent(AppWidgetManager.ACTION_APPWIDGET_BIND)
            intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
            intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_PROVIDER, appWidgetInfo.provider);
            startActivityForResult(intent, REQUEST_BIND_APPWIDGET)
        }
    }

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)
        if (resultCode == RESULT_OK) {
            if (requestCode == REQUEST_BIND_APPWIDGET) {
                val appWidgetId = data!!.getIntExtra(
                    AppWidgetManager.EXTRA_APPWIDGET_ID,
                    AppWidgetManager.INVALID_APPWIDGET_ID
                )
                if (appWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID) {
                    val appWidgetInfo = appWidgetManager.getAppWidgetInfo(appWidgetId)
                    addAppWidget(appWidgetId, appWidgetInfo)
                }
            }
        } else { }
    }

    override fun onStop() {
        super.onStop()
        appWidegetHost.stopListening()
    }

    private fun addAppWidget(appWidgetId: Int, appWidgetInfo: AppWidgetProviderInfo) {
        val widgetView = appWidegetHost.createView(this, appWidgetId, appWidgetInfo)
        val options = appWidgetManager.getAppWidgetOptions(appWidgetId)
        widgetView.updateAppWidgetSize(options, 100, 100, 200, 200)
        widgetView.setAppWidget(appWidgetId, appWidgetInfo)
        widgets.addView(widgetView)
    }
}

activity_main.xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/black"
        tools:context=".MainActivity" android:orientation="vertical">

        <LinearLayout
                android:orientation="horizontal"
                android:layout_width="match_parent"
                android:layout_height="match_parent"     
                android:id="@+id/widgets">
        </LinearLayout>

 </LinearLayout>

Answer 1

updateAppWidgetSize() 方法只影响最小和最大维度，不影响当前维度。

要更改小部件的大小，请通过修改 LayoutParams 来像任何其他视图一样进行操作：

widgetView.layoutParams = widgetView.layoutParams.apply {
    width = /* your width */
    height = /* your height */
}