在新版本的Android中，按钮点击在小部件中不起作用

Question

我创建了一个小部件，它包含一个ViewFlipper和可以切换的按钮。找到了一个解决方案，应用了它，一切都正常，但在新版本的Android中却没有。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。请帮我弄清楚问题出在哪里。

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, appWidgetManager, widgetId[0])
}
}
appWidgetManager.updateAppWidget(widgetId[0], views)
}
private fun updateAppWidget(
context: Context,
appWidgetManager: AppWidgetManager,
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, 0, clickSettingsBtn(context), 0)
val viewerIntentLeftClick = Intent(WIDGET_LC_LEFT_BUTTON)
val viewerPendingLeftClick = PendingIntent.getBroadcast(
context,
0,
viewerIntentLeftClick,
PendingIntent.FLAG_UPDATE_CURRENT
)
val viewerIntentRightClick = Intent(WIDGET_LC_RIGHT_BUTTON)
val viewerPendingRightClick = PendingIntent.getBroadcast(
context,
0,
viewerIntentRightClick,
PendingIntent.FLAG_UPDATE_CURRENT
)
val intentUpdateClick = Intent(WIDGET_LC_UPDATE_BUTTON)
val pendingUpdateBtn = PendingIntent.getBroadcast(
context,
0,
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)
}
}

Answer 1

问题是您使用的是隐式广播。只需确保您将它们全部显式即可。

例如：

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

从Android N 开始查看限制