按钮单击在较新版本的 Android 中的小部件中不起作用

问题描述

我创建了一个小部件，其中包含一个 ViewFlipper 和可以切换的按钮。找到一个解决方案，应用它，一切正常，但不是在较新版本的 Android 中。例如，在版本 API 24 (Android 7) 中它运行良好，但在新版本中，例如 API 30，小部件不处理点击。请帮我找出问题所在。

package com.example.informationwidget.widgets.actual_info_widget

import android.app.PendingIntent
import android.appwidget.AppWidgetManager
import android.appwidget.appwidgetprovider
import android.content.ComponentName
import android.content.Context
import android.content.Intent
import android.net.Uri
import android.util.Log
import android.widget.RemoteViews
import com.example.informationwidget.R
import com.example.informationwidget.SettingsActivity
import com.example.informationwidget.services.LastCompaniesService


/**
 * Implementation of App Widget functionality.
 */
class ActualInfoWidget : appwidgetprovider() {
    private val WIDGET_LC_LEFT_BUTTON = "android.appwidget.action.WIDGET_LC_LEFT_BUTTON"
    private val WIDGET_LC_RIGHT_BUTTON = "android.appwidget.action.WIDGET_LC_RIGHT_BUTTON"
    private val WIDGET_LC_SETTINGS_BUTTON = "android.appwidget.action.WIDGET_LC_SETTINGS_BUTTON"
    private val WIDGET_LC_UPDATE_BUTTON = "android.appwidget.action.WIDGET_LC_UPDATE_BUTTON"

    override fun onUpdate(
        context: Context,appWidgetManager: AppWidgetManager,appWidgetIds: IntArray
    ) {
        // There may be multiple widgets active,so update all of them
        for (appWidgetId in appWidgetIds) {
            updateAppWidget(context,appWidgetManager,appWidgetId)
        }
    }

    override fun onReceive(context: Context?,intent: Intent?) {
        super.onReceive(context,intent)

        val v = intent!!.getIntExtra(
            AppWidgetManager.EXTRA_APPWIDGET_ID,AppWidgetManager.INVALID_APPWIDGET_ID
        )

        val views = RemoteViews(context!!.packageName,R.layout.actual_info_widget)
        val appWidgetManager = AppWidgetManager.getInstance(context)

        val widgetName = ComponentName(context,ActualInfoWidget::class.java)
        val widgetId = AppWidgetManager.getInstance(context).getAppWidgetIds(widgetName)

//        Button click
        when {
            WIDGET_LC_LEFT_BUTTON == intent!!.action -> {
                Log.e("This is ViewFlipper:","This is left button,id = " + v) //widgetId[0]
                views.showPrevIoUs(R.id.vfLastChosenCompanies)
            }
            WIDGET_LC_RIGHT_BUTTON == intent.action -> {
                Log.e("This is ViewFlipper:","This is right button,id = " + v)
                views.showNext(R.id.vfLastChosenCompanies)
            }
            WIDGET_LC_UPDATE_BUTTON == intent.action -> {
                updateAppWidget(context,widgetId[0])
            }
        }

        appWidgetManager.updateAppWidget(widgetId[0],views)
    }

    private fun updateAppWidget(
        context: Context,appWidgetId: Int
    ) {
        val views = RemoteViews(context.packageName,R.layout.actual_info_widget)
        val mainIntent = Intent(context,ActualInfoWidget::class.java)
        mainIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,appWidgetId)
        mainIntent.data = Uri.parse(mainIntent.toUri(Intent.URI_INTENT_SCHEME))

        // Buttons from widget
        val pendingSettingsBtn = PendingIntent.getActivity(context,clickSettingsBtn(context),0)

        val viewerIntentLeftClick = Intent(WIDGET_LC_LEFT_BUTTON)
        val viewerPendingLeftClick = PendingIntent.getbroadcast(
            context,viewerIntentLeftClick,PendingIntent.FLAG_UPDATE_CURRENT
        )

        val viewerIntentRightClick = Intent(WIDGET_LC_RIGHT_BUTTON)
        val viewerPendingRightClick = PendingIntent.getbroadcast(
            context,viewerIntentRightClick,PendingIntent.FLAG_UPDATE_CURRENT
        )

        val intentUpdateClick = Intent(WIDGET_LC_UPDATE_BUTTON)
        val pendingUpdateBtn = PendingIntent.getbroadcast(
            context,intentUpdateClick,PendingIntent.FLAG_UPDATE_CURRENT
        )

        showLastCompanies(views,context,appWidgetId)
        Log.e("ID: ",appWidgetId.toString())

        views.setonClickPendingIntent(R.id.btnLcSettings,pendingSettingsBtn)
        views.setonClickPendingIntent(R.id.btnLeftScroll,viewerPendingLeftClick)
        views.setonClickPendingIntent(R.id.btnRightScroll,viewerPendingRightClick)
        views.setonClickPendingIntent(R.id.btnLcUpdate,pendingUpdateBtn)

        appWidgetManager.updateAppWidget(appWidgetId,views)
        appWidgetManager.notifyAppWidgetViewDataChanged(appWidgetId,R.id.lvLastCompanies)
    }

    private fun clickSettingsBtn(context: Context): Intent {
        val intent = Intent(context,SettingsActivity::class.java)
        intent.data = Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME))

        return intent
    }

    private fun showLastCompanies(rv: RemoteViews,context: Context,appWidgetId: Int) {
        val adapter: Intent = Intent(context,LastCompaniesService::class.java)
        rv.setRemoteAdapter(R.id.lvLastCompanies,adapter)
    }
}

解决方法

问题在于您使用的是隐式广播。只要确保它们都明确。

例如：

val viewerIntentLeftClick = Intent(WIDGET_LC_LEFT_BUTTON)
ComponentName componentName = ComponentName(context,ActualInfoWidget::class.java);
viewerIntentLeftClick.setComponent(componentName);

从 Android N 开始查看 limitations