Android7.0 Notification Show silently 阻止通知定制

需求：控制Notification显示，让所有的通知都没有声音、震动、headsup(就是弹出来显示，类似短信)。但是在statusbar下拉时还有这个通知，这样玩游戏的时候就不会受到影响，通知也不会丢。

其实这个功能Android7.0默认就有了，在Settings中。

这里如果选择Block all就会阻止这个app相关的所有通知。不会有任何通知。如果选择Show silently，就和我们的需求是一致的。这里的实现代码已经找到了，但是我们不能用，因为用了的话就会产生冲突。比如我没有选Show silently，当我们这个需求的模式开启后，在进Settings这个选项看的话，肯定就会被勾选了，所以我们不能用它的方法实现。

这个Show silently的实现代码就是在frameworks/base/services/core/java/com/android/server/notification/NotificationManagerService.java

    void setNotificationsEnabledForPackageImpl(String pkg, int uid, boolean enabled) {Slog.v(TAG, (enabled?"en":"dis") + "abling notifications for " + pkg);mAppOps.setMode(AppOpsManager.OP_POST_NOTIFICATION, uid, pkg,enabled ? AppOpsManager.MODE_ALLOWED : AppOpsManager.MODE_IGNORED);// Now, cancel any outstanding notifications that are part of a just-disabled appif (ENABLE_BLOCKED_NOTIFICATIONS && !enabled) {cancelAllNotificationsInt(MY_UID, MY_PID, pkg, 0, 0, true, UserHandle.getUserId(uid),REASON_PACKAGE_BANNED, null);}}

我们这里不用这个方法，我们要看这个方法设置了之后，哪里会用到，哪里会判断，来控制通知的显示，到时候就在那里加我们的判断来实现控制通知。就是多加一个我们的flag而已。

这边的通知是分2部分的，一部分是控制通知的声音、震动、led灯这些，还有一部分就是statusbar上的显示，比如是不是弹出显示通知Headsup。

1.NotificationManagerService控制通知声音、震动等，然后丢给StatusBar显示。
当应用程序发出通知，就一定会走这里

private class EnqueueNotificationRunnable implements Runnable {private final NotificationRecord r;private final int userId;EnqueueNotificationRunnable(int userId, NotificationRecord r) {this.userId = userId;this.r = r;};@Overridepublic void run() {synchronized (mNotificationList) {final StatusBarNotification n = r.sbn;if (DBG) Slog.d(TAG, "EnqueueNotificationRunnable.run for: " + n.getKey());NotificationRecord old = mNotificationsByKey.get(n.getKey());if (old != null) {// Retain ranking information from previous recordr.copyRankingInformation(old);Log.i("a", "NotificationManagerService: 2652");}final int callingUid = n.getUid();final int callingPid = n.getInitialPid();final Notification notification = n.getNotification();final String pkg = n.getPackageName();final int id = n.getId();final String tag = n.getTag();final boolean isSystemNotification = isUidSystem(callingUid) ||("android".equals(pkg));// Handle grouped notifications and bail out early if we// can to avoid extracting signals.handleGroupedNotificationLocked(r, old, callingUid, callingPid);// This conditional is a dirty hack to limit the logging done on//     behalf of the download manager without affecting other apps.if (!pkg.equals("com.android.providers.downloads")|| Log.isLoggable("DownloadManager", Log.VERBOSE)) {int enqueueStatus = EVENTLOG_ENQUEUE_STATUS_NEW;if (old != null) {enqueueStatus = EVENTLOG_ENQUEUE_STATUS_UPDATE;Log.i("a", "NotificationManagerService: 2676");}EventLogTags.writeNotificationEnqueue(callingUid, callingPid,pkg, id, tag, userId, notification.toString(),enqueueStatus);}mRankingHelper.extractSignals(r);final boolean isPackageSuspended = isPackageSuspendedForUser(pkg, callingUid);// blocked apps// 这里是blocked的apps，就是你在settings中选择Block all的app，这里就会帮通知都屏蔽了if (r.getImportance() == NotificationListenerService.Ranking.IMPORTANCE_NONE|| !noteNotificationOp(pkg, callingUid) || isPackageSuspended) {if (!isSystemNotification) {if (isPackageSuspended) {Slog.e(TAG, "Suppressing notification from package due to package "+ "suspended by administrator.");mUsageStats.registerSuspendedByAdmin(r);Log.i("a", "NotificationManagerService: 2695");} else {Slog.e(TAG, "Suppressing notification from package by user request.");mUsageStats.registerBlocked(r);Log.i("a", "NotificationManagerService: 2699");}return;}}// tell the ranker service about the notificationif (mRankerServices.isEnabled()) {mRankerServices.onNotificationEnqueued(r);Log.i("a", "NotificationManagerService: 2708");// TODO delay the code below here for 100ms or until there is an answer}int index = indexOfNotificationLocked(n.getKey());if (index < 0) {mNotificationList.add(r);mUsageStats.registerPostedByApp(r);Log.i("a", "NotificationManagerService: 2717");} else {old = mNotificationList.get(index);mNotificationList.set(index, r);mUsageStats.registerUpdatedByApp(r, old);// Make sure we don't lose the foreground service state.notification.flags |=old.getNotification().flags & Notification.FLAG_FOREGROUND_SERVICE;r.isUpdate = true;Log.i("a", "NotificationManagerService: 2726");}mNotificationsByKey.put(n.getKey(), r);// Ensure if this is a foreground service that the proper additional// flags are set.if ((notification.flags & Notification.FLAG_FOREGROUND_SERVICE) != 0) {notification.flags |= Notification.FLAG_ONGOING_EVENT| Notification.FLAG_NO_CLEAR;Log.i("a", "NotificationManagerService: 2736");}applyZenModeLocked(r);mRankingHelper.sort(mNotificationList);if (notification.getSmallIcon() != null) {StatusBarNotification oldSbn = (old != null) ? old.sbn : null;mListeners.notifyPostedLocked(n, oldSbn);Log.i("a", "NotificationManagerService: 2745");} else {Slog.e(TAG, "Not posting notification without small icon: " + notification);if (old != null && !old.isCanceled) {mListeners.notifyRemovedLocked(n);Log.i("a", "NotificationManagerService: 2750");}// ATTENTION: in a future release we will bail out here// so that we do not play sounds, show lights, etc. for invalid// notificationsSlog.e(TAG, "WARNING: In a future release this will crash the app: "+ n.getPackageName());}buzzBeepBlinkLocked(r);}}}

下面来看看buzzBeepBlinkLocked这个函数

@VisibleForTestingvoid buzzBeepBlinkLocked(NotificationRecord record) {boolean buzz = false;boolean beep = false;boolean blink = false;final Notification notification = record.sbn.getNotification();final String key = record.getKey();// Should this notification make noise, vibe, or use the LED?final boolean aboveThreshold = record.getImportance() >= IMPORTANCE_DEFAULT;final boolean canInterrupt = aboveThreshold && !record.isIntercepted();if (DBG || record.isIntercepted())Slog.v(TAG,"pkg=" + record.sbn.getPackageName() + " canInterrupt=" + canInterrupt +" intercept=" + record.isIntercepted());final int currentUser;final long token = Binder.clearCallingIdentity();try {currentUser = ActivityManager.getCurrentUser();} finally {Binder.restoreCallingIdentity(token);}Log.i("a", "NotificationManagerService: 2837");// If we're not supposed to beep, vibrate, etc. then don't.final String disableEffects = disableNotificationEffects(record);if (disableEffects != null) {ZenLog.traceDisableEffects(record, disableEffects);Log.i("a", "NotificationManagerService: 2843");}// Remember if this notification already owns the notification channels.boolean wasBeep = key != null && key.equals(mSoundNotificationKey);boolean wasBuzz = key != null && key.equals(mVibrateNotificationKey);// These are set inside the conditional if the notification is allowed to make noise.boolean hasValidVibrate = false;boolean hasValidSound = false;boolean smsRingtone =  false;if (mCarrierConfig != null) {smsRingtone = mCarrierConfig.getBoolean(CarrierConfigManager.KEY_CONFIG_SMS_RINGTONE_INCALL);Log.i("a", "NotificationManagerService: 2858");}Log.i("a", "NotificationManagerService: 2860");// 这里就是我们要加flag判断的地方。如果要silent通知就不要进这个if判断，我们可以在这个if外面在多加一个我们的flag。if ((disableEffects == null || (smsRingtone && mInCall))&& (record.getUserId() == UserHandle.USER_ALL ||record.getUserId() == currentUser ||mUserProfiles.isCurrentProfile(record.getUserId()))&& canInterrupt&& mSystemReady&& mAudioManager != null) {if (DBG) Slog.v(TAG, "Interrupting!");Log.i("a", "NotificationManagerService: 2869");// should we use the default notification sound? (indicated either by// DEFAULT_SOUND or because notification.sound is pointing at// Settings.System.NOTIFICATION_SOUND)final boolean useDefaultSound =(notification.defaults & Notification.DEFAULT_SOUND) != 0 ||Settings.System.DEFAULT_NOTIFICATION_URI.equals(notification.sound);Uri soundUri = null;if (useDefaultSound) {soundUri = Settings.System.DEFAULT_NOTIFICATION_URI;// check to see if the default notification sound is silenthasValidSound = mSystemNotificationSound != null;Log.i("a", "NotificationManagerService: 2884");} else if (notification.sound != null) {soundUri = notification.sound;hasValidSound = (soundUri != null);Log.i("a", "NotificationManagerService: 2888");}// Does the notification want to specify its own vibration?final boolean hasCustomVibrate = notification.vibrate != null;// new in 4.2: if there was supposed to be a sound and we're in vibrate// mode, and no other vibration is specified, we fall back to vibrationfinal boolean convertSoundToVibration =!hasCustomVibrate&& hasValidSound&& (mAudioManager.getRingerModeInternal() == AudioManager.RINGER_MODE_VIBRATE);// The DEFAULT_VIBRATE flag trumps any custom vibration AND the fallback.final boolean useDefaultVibrate =(notification.defaults & Notification.DEFAULT_VIBRATE) != 0;hasValidVibrate = useDefaultVibrate || convertSoundToVibration ||hasCustomVibrate;Log.i("a", "useDefaultVibrate || convertSoundToVibration hasCustomVibrate  "+useDefaultVibrate+convertSoundToVibration+hasCustomVibrate);// We can alert, and we're allowed to alert, but if the developer asked us to only do// it once, and we already have, then don't.if (!(record.isUpdate&& (notification.flags & Notification.FLAG_ONLY_ALERT_ONCE) != 0)) {sendAccessibilityEvent(notification, record.sbn.getPackageName());if (hasValidSound) {boolean looping =(notification.flags & Notification.FLAG_INSISTENT) != 0;AudioAttributes audioAttributes = audioAttributesForNotification(notification);mSoundNotificationKey = key;// do not play notifications if stream volume is 0 (typically because// ringer mode is silent) or if there is a user of exclusive audio focusif ((mAudioManager.getStreamVolume(AudioAttributes.toLegacyStreamType(audioAttributes)) != 0)&& !mAudioManager.isAudioFocusExclusive()) {final long identity = Binder.clearCallingIdentity();try {final IRingtonePlayer player =mAudioManager.getRingtonePlayer();if (player != null) {if (DBG) Slog.v(TAG, "Playing sound " + soundUri+ " with attributes " + audioAttributes);player.playAsync(soundUri, record.sbn.getUser(), looping,audioAttributes);beep = true;}} catch (RemoteException e) {} finally {Binder.restoreCallingIdentity(identity);}}}if (hasValidVibrate && !(mAudioManager.getRingerModeInternal()== AudioManager.RINGER_MODE_SILENT)) {mVibrateNotificationKey = key;if (useDefaultVibrate || convertSoundToVibration) {// Escalate privileges so we can use the vibrator even if the// notifying app does not have the VIBRATE permission.long identity = Binder.clearCallingIdentity();try {mVibrator.vibrate(record.sbn.getUid(), record.sbn.getOpPkg(),useDefaultVibrate ? mDefaultVibrationPattern: mFallbackVibrationPattern,((notification.flags & Notification.FLAG_INSISTENT) != 0)? 0: -1, audioAttributesForNotification(notification));buzz = true;} finally {Binder.restoreCallingIdentity(identity);}} else if (notification.vibrate.length > 1) {// If you want your own vibration pattern, you need the VIBRATE// permissionmVibrator.vibrate(record.sbn.getUid(), record.sbn.getOpPkg(),notification.vibrate,((notification.flags & Notification.FLAG_INSISTENT) != 0)? 0: -1, audioAttributesForNotification(notification));buzz = true;}}}}Log.i("a", "NotificationManagerService: 2977");// If a notification is updated to remove the actively playing sound or vibrate,// cancel that feedback nowif (wasBeep && !hasValidSound) {clearSoundLocked();Log.i("a", "NotificationManagerService: 2982");}if (wasBuzz && !hasValidVibrate) {clearVibrateLocked();Log.i("a", "NotificationManagerService: 2986");}// light// release the lightboolean wasShowLights = mLights.remove(key);if ((notification.flags & Notification.FLAG_SHOW_LIGHTS) != 0 && aboveThreshold&& ((record.getSuppressedVisualEffects()& NotificationListenerService.SUPPRESSED_EFFECT_SCREEN_OFF) == 0)) {Log.i("a", "NotificationManagerService: 2995");mLights.add(key);updateLightsLocked();if (mUseAttentionLight) {mAttentionLight.pulse();}blink = true;} else if (wasShowLights) {updateLightsLocked();Log.i("a", "NotificationManagerService: 3004");}if (buzz || beep || blink) {if (((record.getSuppressedVisualEffects()& NotificationListenerService.SUPPRESSED_EFFECT_SCREEN_OFF) != 0)) {if (DBG) Slog.v(TAG, "Suppressed SystemUI from triggering screen on");} else {EventLogTags.writeNotificationAlert(key,buzz ? 1 : 0, beep ? 1 : 0, blink ? 1 : 0);mHandler.post(mBuzzBeepBlinked);}}}

关于声音、震动、灯光就在上面这处理的。

2.StatusBar部分，控制通知的显示，Headsup就在这控制。
BaseStatusBar.java
当有通知从NotificationManagerService过来后，就会走onNotificationPosted。onNotificationPosted会根据通知是新增还是更新做不同的处理，所以我们要在2个地方去阻止通知显示。

@Overridepublic void onNotificationPosted(final StatusBarNotification sbn,final RankingMap rankingMap) {if (DEBUG) Log.d(TAG, "onNotificationPosted: " + sbn);Log.i("a", "StatusBarNotification "+sbn);Log.i("a", "Notification "+sbn.getNotification());if (sbn != null) {mHandler.post(new Runnable() {@Overridepublic void run() {processForRemoteInput(sbn.getNotification());String key = sbn.getKey();mKeysKeptForRemoteInput.remove(key);boolean isUpdate = mNotificationData.get(key) != null;// In case we don't allow child notifications, we ignore children of// notifications that have a summary, since we're not going to show them// anyway. This is true also when the summary is canceled,// because children are automatically canceled by NoMan in that case.if (!ENABLE_CHILD_NOTIFICATIONS&& mGroupManager.isChildInGroupWithSummary(sbn)) {if (DEBUG) {Log.d(TAG, "Ignoring group child due to existing summary: " + sbn);}// Remove existing notification to avoid stale data.if (isUpdate) {removeNotification(key, rankingMap);} else {mNotificationData.updateRanking(rankingMap);}return;}if (isUpdate) {updateNotification(sbn, rankingMap);Log.i("a", "StatusBar:  "+653);} else {addNotification(sbn, rankingMap, null /* oldEntry */);Log.i("a", "StatusBar:  "+656);}}});}}

首先看updateNotification，这个函数在BaseStatusBar.java中

public void updateNotification(StatusBarNotification notification, RankingMap ranking) {if (DEBUG) Log.d(TAG, "updateNotification(" + notification + ")");final String key = notification.getKey();Entry entry = mNotificationData.get(key);if (entry == null) {return;} else {mHeadsUpEntriesToRemoveOnSwitch.remove(entry);mRemoteInputEntriesToRemoveOnCollapse.remove(entry);}Notification n = notification.getNotification();mNotificationData.updateRanking(ranking);boolean applyInPlace;try {applyInPlace = entry.cacheContentViews(mContext, notification.getNotification());} catch (RuntimeException e) {Log.e(TAG, "Unable to get notification remote views", e);applyInPlace = false;}boolean shouldPeek = shouldPeek(entry, notification);//这里会根据shouldPeek的值，来处理是否显示headsup通知，所以把shouldPeek该成false就可以阻止了。Log.i("a", "StatusBar: set shouldPeek updateNotification  "+shouldPeek);Log.i("a", "StatusBar:  "+2407);boolean alertAgain = alertAgain(entry, n);if (DEBUG) {Log.d(TAG, "applyInPlace=" + applyInPlace+ " shouldPeek=" + shouldPeek+ " alertAgain=" + alertAgain);}final StatusBarNotification oldNotification = entry.notification;entry.notification = notification;mGroupManager.onEntryUpdated(entry, oldNotification);boolean updateSuccessful = false;if (applyInPlace) {Log.i("a", "StatusBar:  "+2421);if (DEBUG) Log.d(TAG, "reusing notification for key: " + key);try {if (entry.icon != null) {Log.i("a", "StatusBar:  "+2425);// Update the iconfinal StatusBarIcon ic = new StatusBarIcon(notification.getUser(),notification.getPackageName(),n.getSmallIcon(),n.iconLevel,n.number,StatusBarIconView.contentDescForNotification(mContext, n));entry.icon.setNotification(n);if (!entry.icon.set(ic)) {Log.i("a", "StatusBar:  "+2436);handleNotificationError(notification, "Couldn't update icon: " + ic);return;}}Log.i("a", "StatusBar:  "+2441);updateNotificationViews(entry, notification);updateSuccessful = true;}catch (RuntimeException e) {// It failed to apply cleanly.Log.w(TAG, "Couldn't reapply views for package " +notification.getPackageName(), e);}}if (!updateSuccessful) {Log.i("a", "StatusBar:  "+2452);if (DEBUG) Log.d(TAG, "not reusing notification for key: " + key);final StatusBarIcon ic = new StatusBarIcon(notification.getUser(),notification.getPackageName(),n.getSmallIcon(),n.iconLevel,n.number,StatusBarIconView.contentDescForNotification(mContext, n));entry.icon.setNotification(n);entry.icon.set(ic);if (!inflateViews(entry, mStackScroller)) {Log.i("a", "StatusBar:  "+2464);handleNotificationError(notification, "Couldn't update remote views for: "+ notification);}}updateHeadsUp(key, entry, shouldPeek, alertAgain);updateNotifications();if (!notification.isClearable()) {Log.i("a", "StatusBar:  "+2473);// The user may have performed a dismiss action on the notification, since it's// not clearable we should snap it back.mStackScroller.snapViewIfNeeded(entry.row);}if (DEBUG) {// Is this for you?boolean isForCurrentUser = isNotificationForCurrentProfiles(notification);Log.d(TAG, "notification is " + (isForCurrentUser ? "" : "not ") + "for you");}setAreThereNotifications();}

addNotification是在PhoneStatusBar.java中实现的。

@Overridepublic void addNotification(StatusBarNotification notification, RankingMap ranking,Entry oldEntry) {if (DEBUG) Log.d(TAG, "addNotification key=" + notification.getKey());mNotificationData.updateRanking(ranking);Entry shadeEntry = createNotificationViews(notification);if (shadeEntry == null) {return;}boolean isHeadsUped = shouldPeek(shadeEntry);// 和updateNotification那一样，把isHeadsUped设置成false就可以阻止了。Log.i("a", "PhoneStatusBar: set is headsuped false");Log.i("a", "PhoneStatusBar:  "+isHeadsUped+1575);if (isHeadsUped) {mHeadsUpManager.showNotification(shadeEntry);// Mark as seen immediatelysetNotificationShown(notification);Log.i("a", "PhoneStatusBar:  "+1582);}if (!isHeadsUped && notification.getNotification().fullScreenIntent != null) {if (shouldSuppressFullScreenIntent(notification.getKey())) {if (DEBUG) {Log.i("a", "PhoneStatusBar:  "+1586);Log.d(TAG, "No Fullscreen intent: suppressed by DND: " + notification.getKey());}} else if (mNotificationData.getImportance(notification.getKey())< NotificationListenerService.Ranking.IMPORTANCE_MAX) {if (DEBUG) {Log.i("a", "PhoneStatusBar:  "+1592);Log.d(TAG, "No Fullscreen intent: not important enough: "+ notification.getKey());}}else if(!isHeadsUped) {Log.i("a", "PhoneStatusBar:  "+1599);}else {Log.i("a", "PhoneStatusBar:  "+1597);// Stop screensaver if the notification has a full-screen intent.// (like an incoming phone call)awakenDreams();// not immersive & a full-screen alert should be shownif (DEBUG)Log.d(TAG, "Notification has fullScreenIntent; sending fullScreenIntent");try {EventLog.writeEvent(EventLogTags.SYSUI_FULLSCREEN_NOTIFICATION,notification.getKey());notification.getNotification().fullScreenIntent.send();shadeEntry.notifyFullScreenIntentLaunched();MetricsLogger.count(mContext, "note_fullscreen", 1);} catch (PendingIntent.CanceledException e) {}}}addNotificationViews(shadeEntry, ranking);// Recalculate the position of the sliding windows and the titles.setAreThereNotifications();}

最后看看shouldPeek，在BaseStatusBar.java中实现

protected boolean shouldPeek(Entry entry, StatusBarNotification sbn) {Log.i("a", "StatusBar:  "+2548);if (!mUseHeadsUp || isDeviceInVrMode()) {Log.i("a", "StatusBar:  "+2550);return false;}if (mNotificationData.shouldFilterOut(sbn)) {if (DEBUG) Log.d(TAG, "No peeking: filtered notification: " + sbn.getKey());Log.i("a", "StatusBar:  "+2556);return false;}boolean inUse = mPowerManager.isScreenOn();try {inUse = inUse && !mDreamManager.isDreaming();Log.i("a", "StatusBar:  "+2563);} catch (RemoteException e) {Log.d(TAG, "failed to query dream manager", e);}if (!inUse) {if (DEBUG) {Log.d(TAG, "No peeking: not in use: " + sbn.getKey());}Log.i("a", "StatusBar:  "+2572);return false;}if (mNotificationData.shouldSuppressScreenOn(sbn.getKey())) {if (DEBUG) Log.d(TAG, "No peeking: suppressed by DND: " + sbn.getKey());Log.i("a", "StatusBar:  "+2578);return false;}if (entry.hasJustLaunchedFullScreenIntent()) {if (DEBUG) Log.d(TAG, "No peeking: recent fullscreen: " + sbn.getKey());Log.i("a", "StatusBar:  "+2584);return false;}if (isSnoozedPackage(sbn)) {if (DEBUG) Log.d(TAG, "No peeking: snoozed package: " + sbn.getKey());Log.i("a", "StatusBar:  "+2590);return false;}// 在settings中设置了show silently后，就会走这里。只要这个shouldPeek函数返回false，就不会显示headsup这样的通知。if (mNotificationData.getImportance(sbn.getKey()) < IMPORTANCE_HIGH) {if (DEBUG) Log.d(TAG, "No peeking: unimportant notification: " + sbn.getKey());Log.i("a", "StatusBar:  "+2596);return false;}if (sbn.getNotification().fullScreenIntent != null) {if (mAccessibilityManager.isTouchExplorationEnabled()) {if (DEBUG) Log.d(TAG, "No peeking: accessible fullscreen: " + sbn.getKey());Log.i("a", "StatusBar:  "+2603);return false;} else {Log.i("a", "StatusBar:  "+2606);// we only allow head-up on the lockscreen if it doesn't have a fullscreen intentreturn !mStatusBarKeyguardViewManager.isShowing()|| mStatusBarKeyguardViewManager.isOccluded();}}return true;}

最后在settings数据库中加入自己的字段做flag，在上面的地方来判断，是否开启这个模式。开启后就可以实现和系统自带的Settings->Notifications中Show silently一样的效果了，也不会和系统这个功能有冲突。

Android7.0 Notification Show silently 阻止通知定制相关推荐

nougat什么时候发布的_如何在Android Nougat中管理，自定义和阻止通知
nougat什么时候发布的 Android 7.0 Nougat made some pretty big improvements to notifications, but there's one ...
Android7.0新特性、新功能
[本文转载来自http://blog.csdn.net/hao54216/article/details/52388755] 前言: 总想写点自己的东西,因为很多Android知识网上大部分都有教程, ...
Android7.0适配
本篇文章已授权微信公众号 guolin_blog (郭霖)独家发布转载请注明出处:http://blog.csdn.net/chay_chan/article/details/57083383 关于 ...
Android7.0的适配
关于Android7.0的适配最近在软件的维护和更新过程中,了解到一些关于Android7.0的适配,在这里和大家分享一下,据我所知,需要对Notification.拍照.图片的裁剪进行适配一 ...
Android7.0 数据拨号前的准备工作
背景在介绍PhoneApp的创建过程时,我们知道为了支持双卡手机,PhoneFactory创建了两个Phone对象. 然而由于通信制式.功耗等的限制,目前底层的芯片厂商规定modem工作于DSD ...
Android7.0 数据拨号前的准备工作
背景在介绍PhoneApp的创建过程时,我们知道为了支持双卡手机,PhoneFactory创建了两个Phone对象. 然而由于通信制式.功耗等的限制,目前底层的芯片厂商规定modem工作于DSDS模 ...
android7虚拟定位,Android8.0还早 EMUI助推Android7.0普及
5月17日至19日,谷歌2017年开发者大会在加州谷歌总部所在地举办.本次会议当中,最重要产品之一即新一代Android O操作系统(也就是我们所说Android 8.0)成为最大的亮点.最新发布的A ...
Android7.0 Rild工作流程
点击打开链接一.基于Rild的通信架构一般智能手机的硬件架构都是两个处理器: 一个处理器用来运行操作系统,上面运行应用程序,这个处理器称作Application Processor,简称AP:另 ...
Android 4.0 Notification
通常,在手机有未接电话,收到消息或者挂着退出主界面的QQ,在状态栏会有一个Notification,那么,这个notification如何产生的? 通常做法: Intent intent = new ...

Android7.0 Notification Show silently 阻止通知定制

Android7.0 Notification Show silently 阻止通知定制相关推荐

最新文章

热门文章

Android7.0 Notification Show silently 阻止通知 定制

Android7.0 Notification Show silently 阻止通知 定制相关推荐

最新文章

热门文章

Android7.0 Notification Show silently 阻止通知定制

Android7.0 Notification Show silently 阻止通知定制相关推荐