java - Android 9 上的 java.lang.IllegalStateException
问题描述
最近我将我的 API 目标更新为 28。我必须进行一些更改。我收到大量用户(8,396)的故障转储错误,并出现 IllegalStateException 异常。
- 玩控制台崩溃
java.lang.RuntimeException: at android.app.ActivityThread.handleReceiver (ActivityThread.java:3584) at android.app.ActivityThread.access$1300 (ActivityThread.java:235) at android.app.ActivityThread$H.handleMessage (ActivityThread.java:1779) at android.os.Handler.dispatchMessage (Handler.java:106) at android.os.Looper.loop (Looper.java:214) at android.app.ActivityThread.main (ActivityThread.java:6981) at java.lang.reflect.Method.invoke (Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:493) at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1445) Caused by: java.lang.IllegalStateException: at android.app.ContextImpl.startServiceCommon (ContextImpl.java:1666) at android.app.ContextImpl.startService (ContextImpl.java:1611) at android.content.ContextWrapper.startService (ContextWrapper.java:677) at android.content.ContextWrapper.startService (ContextWrapper.java:677) at ch.corten.aha.worldclock.WorldClockWidgetProvider.onClockTick (WorldClockWidgetProvider.java:147) at ch.corten.aha.worldclock.ClockWidgetProvider.onReceive (ClockWidgetProvider.java:115) at android.app.ActivityThread.handleReceiver (ActivityThread.java:3575)
- WorldClockWidgetProvider.java:147在context.startService(service) 报告;. 从下面的功能快照。
@Override protected void onClockTick(Context context) { Intent service = new Intent(context, WorldClockWidgetService.class); context.startService(service); }
- ClockWidgetProvider.java:115表示“ onClockTick(context); ”从下面的函数快照。
@Override public void onReceive(Context context, Intent intent) { Log.e(TAG, "Onrecive called Biswajit"); super.onReceive(context, intent); if (WIDGET_DATA_CHANGED_ACTION.equals(intent.getAction()) || CLOCK_TICK_ACTION.equals(intent.getAction())) { PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE); if (pm.isScreenOn()) { onClockTick(context); } } }
所有报告的设备都是 Android 9 和 API 29。
- Build.gradile 片段
dependencies { //compile 'com.actionbarsherlock:actionbarsherlock:4.4.0@aar' //compile 'com.android.support:support-v4:19.1.0' implementation 'com.github.javiersantos:AppUpdater:2.7' implementation 'com.google.code.gson:gson:2.8.2' implementation 'net.danlew:android.joda:2.9.4.1' implementation 'com.google.android.gms:play-services-ads:9.8.0' //noinspection GradleCompatible implementation 'com.android.support:appcompat-v7:22.2.1' implementation 'com.facebook.android:audience-network-sdk:4.28.2' }
- 叫服务
import android.content.Intent; public class WorldClockWidgetService extends IntentService { public WorldClockWidgetService() { super("WorldClockWidgetService"); }
建议的解决方案?:
- Intent服务的上下文
public class WorldClockWidgetService extends IntentService { public WorldClockWidgetService() { super("WorldClockWidgetService"); } @Override protected void onHandleIntent(Intent intent) { WorldClockWidgetProvider.updateTime(this); } }
哪个将被替换
public class WorldClockWidgetService extends JobIntentService { public WorldClockWidgetService() { super("WorldClockWidgetService"); } @Override protected void onHandleWork(Intent intent) { WorldClockWidgetProvider.updateTime(this); } }
错误:出现错误
WorldClockWidgetProvider 的内容
public class WorldClockWidgetProvider extends ClockWidgetProvider {
private static final boolean SANS_JELLY_BEAN_MR1 = Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1;
static {
registerClockWidget(WorldClockWidgetProvider.class);
}
@Override
protected void updateAppWidget(Context context, AppWidgetManager appWidgetManager, int appWidgetId) {
updateAppWidgetStatic(context, appWidgetManager, appWidgetId);
}
private static void updateAppWidgetStatic(Context context, AppWidgetManager appWidgetManager, int appWidgetId) {
// Create an Intent to launch WorldClockActivity
Intent intent = new Intent(context, WorldClockActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
// Get the layout for the App Widget and attach an on-click listener
// to the button
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.world_clock_widget);
views.setOnClickPendingIntent(R.id.app_widget, pendingIntent);
// update view
updateViews(context, views);
// Tell the AppWidgetManager to perform an update on the current app widget
appWidgetManager.updateAppWidget(appWidgetId, views);
}
private static final String[] PROJECTION = {
Clocks.TIMEZONE_ID,
Clocks.CITY
};
private static final int[] CITY_IDS = {
R.id.city_text1,
R.id.city_text2,
R.id.city_text3,
R.id.city_text4,
};
private static final int[] TIME_IDS = {
R.id.time_text1,
R.id.time_text2,
R.id.time_text3,
R.id.time_text4,
};
private static void updateViews(Context context, RemoteViews views) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
boolean autoSort = prefs.getBoolean(context.getString(R.string.auto_sort_clocks_key), true);
Cursor cursor = Clocks.widgetList(context, PROJECTION, autoSort);
try {
int n = 0;
DateFormat df = android.text.format.DateFormat.getTimeFormat(context);
long now = DateTimeUtils.currentTimeMillis();
final int maxEntries = context.getResources().getInteger(R.integer.worldclock_widget_max_entries);
while (cursor.moveToNext() && n < CITY_IDS.length
&& n < maxEntries) {
String id = cursor.getString(cursor.getColumnIndex(Clocks.TIMEZONE_ID));
String city = cursor.getString(cursor.getColumnIndex(Clocks.CITY));
views.setTextViewText(CITY_IDS[n], city);
DateTimeZone tz = DateTimeZone.forID(id);
if (SANS_JELLY_BEAN_MR1) {
views.setTextViewText(TIME_IDS[n], TimeZoneInfo.formatDate(df, tz, now));
} else {
TimeZone javaTimeZone = TimeZoneInfo.convertToJavaTimeZone(tz, now);
views.setViewVisibility(TIME_IDS[n], View.VISIBLE);
RemoteViewUtil.setTextClockTimeZone(views, TIME_IDS[n], javaTimeZone.getID());
}
n++;
}
int showEmptyText = (n == 0) ? View.VISIBLE : View.INVISIBLE;
views.setViewVisibility(R.id.empty_text, showEmptyText);
for (; n < CITY_IDS.length; n++) {
views.setTextViewText(CITY_IDS[n], "");
if (SANS_JELLY_BEAN_MR1) {
views.setTextViewText(TIME_IDS[n], "");
} else {
views.setViewVisibility(TIME_IDS[n], View.INVISIBLE);
}
}
boolean customColors = prefs.getBoolean(context.getString(R.string.use_custom_colors_key), false);
int textColor = Color.WHITE;
if (customColors) {
int color = prefs.getInt(context.getString(R.string.background_color_key), Color.BLACK);
RemoteViewUtil.setBackgroundColor(views, R.id.app_widget, color);
textColor = prefs.getInt(context.getString(R.string.foreground_color_key), Color.WHITE);
} else {
RemoteViewUtil.setBackground(views, R.id.app_widget, R.drawable.appwidget_dark_bg);
}
for (int i = 0; i < CITY_IDS.length; i++) {
views.setTextColor(CITY_IDS[i], textColor);
views.setTextColor(TIME_IDS[i], textColor);
}
} finally {
if (cursor != null) {
cursor.close();
}
}
}
@Override
protected void onClockTick(Context context) {
Intent service = new Intent(context, WorldClockWidgetService.class);
context.startService(service);
}
static void updateTime(Context context) {
// update on the hour
final long minutes = System.currentTimeMillis() / (60000);
if (minutes % 60 == 0) {
Clocks.updateOrder(context);
}
// Get the widget manager and ids for this widget provider, then call the shared
// clock update method.
ComponentName thisAppWidget = new ComponentName(context.getPackageName(), WorldClockWidgetProvider.class.getName());
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
int[] ids = appWidgetManager.getAppWidgetIds(thisAppWidget);
for (int appWidgetID: ids) {
updateAppWidgetStatic(context, appWidgetManager, appWidgetID);
}
}
}
解决方案
如以下链接所述:
https ://developer.android.com/about/versions/oreo/android-8.0-changes#back-all
Android 8.0(API 级别 26)还包括对特定方法的以下更改:
如果针对 Android 8.0 的应用程序在不允许创建后台服务的情况下尝试使用该方法,该
startService()
方法现在会抛出异常。IllegalStateException
https://developer.android.com/about/versions/oreo/background.html
注意:
IntentService
是一项服务,因此受新的后台服务限制。因此,许多依赖 IntentService 的应用程序在面向 Android 8.0 或更高版本时无法正常运行。出于这个原因,Android 支持库 26.0.0 引入了一个新JobIntentService
类,它提供与 IntentService 相同的功能,但在 Android 8.0 或更高版本上运行时使用作业而不是服务。
因此,您需要查看 JobIntentService 和 JobScheduler 类并用它替换旧的后台服务代码。
有关此类作业的示例,请参阅https://developer.android.com/reference/android/support/v4/app/JobIntentService 。
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