勿擾模式是Android 7.0開始加入的功能。它的核心思想是屏蔽了通知的鈴聲、振動和展示。
代碼分散在幾部分。
1.設置代碼在Settings中，ZenMode開頭的一系列文件
/packages/apps/Settings/src/com/android/settings/notification/ZenModeSettings.java
/packages/apps/Settings/src/com/android/settings/notification/ZenModeSettingsBase.java
/packages/apps/Settings/src/com/android/settings/notification/ZenModeVoiceActivity.java
/packages/apps/Settings/src/com/android/settings/notification/ZenModePrioritySettings.java
/packages/apps/Settings/src/com/android/settings/notification/ZenModeRuleSettingsBase.java
/packages/apps/Settings/src/com/android/settings/notification/ZenModeEventRuleSettings.java
/packages/apps/Settings/src/com/android/settings/notification/ZenModeAutomationSettings.java
/packages/apps/Settings/src/com/android/settings/notification/ZenModeScheduleRuleSettings.java
/packages/apps/Settings/src/com/android/settings/notification/ZenModeScheduleDaysSelection.java
/packages/apps/Settings/src/com/android/settings/notification/ZenModeVisualInterruptionSettings.java
2.framework中關於勿擾的文件
2.1 勿擾模式設置，可以在進程間傳遞
/frameworks/base/core/java/android/service/notification/ZenModeConfig.aidl
/frameworks/base/core/java/android/service/notification/ZenModeConfig.java
2.2 勿擾模式使用相關文件
/frameworks/base/services/core/java/com/android/server/notification/ZenModeHelper.java
/frameworks/base/services/core/java/com/android/server/notification/ZenModeFiltering.java
/frameworks/base/services/core/java/com/android/server/notification/ZenModeConditions.java
2.3 systemUI中，有勿擾模式UI和功能兩個部分構成。因爲最終的目的是處理通知，所以實現是在systemUI中。
/frameworks/base/packages/SystemUI/src/com/android/systemui/volume/ZenModePanel.java
/frameworks/base/packages/SystemUI/src/com/android/systemui/tuner/TunerZenModePanel.java
/frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/policy/ZenModeController.java
/frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/policy/ZenModeControllerImpl.java
3.各個apk對勿擾模式的處理，以來電鈴聲爲例
/packages/services/Telecomm/src/com/android/server/telecom/Ringer.java
private boolean shouldRingForContact(Uri contactUri) {
final NotificationManager manager =
(NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
final Bundle extras = new Bundle();
if (contactUri != null) {
extras.putStringArray(Notification.EXTRA_PEOPLE, new String[] {contactUri.toString()});
}
return manager.matchesCallFilter(extras);
}使用matchesCallFilter來決定是否響鈴。
4.matchesCallFilter流程分析
frameworks/base/core/java/android/app/NotificationManager.java
public boolean matchesCallFilter(Bundle extras) {
INotificationManager service = getService();
try {
return service.matchesCallFilter(extras);
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}frameworks/base/services/core/java/com/android/server/notification/NotificationManagerService.java
public boolean matchesCallFilter(Bundle extras) {
enforceSystemOrSystemUI("INotificationManager.matchesCallFilter");
return mZenModeHelper.matchesCallFilter(
Binder.getCallingUserHandle(),
extras,
mRankingHelper.findExtractor(ValidateNotificationPeople.class),
MATCHES_CALL_FILTER_CONTACTS_TIMEOUT_MS,
MATCHES_CALL_FILTER_TIMEOUT_AFFINITY);
}android/frameworks/base/services/core/java/com/android/server/notification/ZenModeHelper.java
public boolean matchesCallFilter(UserHandle userHandle, Bundle extras,
ValidateNotificationPeople validator, int contactsTimeoutMs, float timeoutAffinity) {
synchronized (mConfig) {
return ZenModeFiltering.matchesCallFilter(mContext, mZenMode, mConfig, userHandle,
extras, validator, contactsTimeoutMs, timeoutAffinity);
}
}android/frameworks/base/services/core/java/com/android/server/notification/ZenModeFiltering.java
public static boolean matchesCallFilter(Context context, int zen, ZenModeConfig config,
UserHandle userHandle, Bundle extras, ValidateNotificationPeople validator,
int contactsTimeoutMs, float timeoutAffinity) {
if (zen == Global.ZEN_MODE_NO_INTERRUPTIONS) return false; // nothing gets through //勿擾模式判斷
if (zen == Global.ZEN_MODE_ALARMS) return false; // not an alarm
if (zen == Global.ZEN_MODE_IMPORTANT_INTERRUPTIONS) {
if (config.allowRepeatCallers && REPEAT_CALLERS.isRepeat(context, extras)) { //短時間內第二次來電放行
return true;
}
if (!config.allowCalls) return false; // no other calls get through //是否禁止全部來電
if (validator != null) {
final float contactAffinity = validator.getContactAffinity(userHandle, extras,
contactsTimeoutMs, timeoutAffinity);
return audienceMatches(config.allowCallsFrom, contactAffinity); //依據聯繫人判斷
}
}
return true;
}先來看返回結果調用的方法：
private static boolean audienceMatches(int source, float contactAffinity) {
switch (source) {
case ZenModeConfig.SOURCE_ANYONE: //所有人
return true;
case ZenModeConfig.SOURCE_CONTACT:
return contactAffinity >= ValidateNotificationPeople.VALID_CONTACT; //聯繫人
case ZenModeConfig.SOURCE_STAR:
return contactAffinity >= ValidateNotificationPeople.STARRED_CONTACT; //星標聯繫人
default:
Slog.w(TAG, "Encountered unknown source: " + source);
return true;
}
}frameworks/base/services/core/java/com/android/server/notification/ValidateNotificationPeople.java
public float getContactAffinity(UserHandle userHandle, Bundle extras, int timeoutMs,
float timeoutAffinity) {
...
final PeopleRankingReconsideration prr = validatePeople(context, key, extras, affinityOut); //從緩存中讀取值
float affinity = affinityOut[0];
if (prr != null) {
// Perform the heavy work on a background thread so we can abort when we hit the
// timeout.
final Semaphore s = new Semaphore(0);
AsyncTask.THREAD_POOL_EXECUTOR.execute(new Runnable() {
@Override
public void run() {
prr.work(); //開線程查詢數據庫
s.release();
}
});
try {
if (!s.tryAcquire(timeoutMs, TimeUnit.MILLISECONDS)) {
Slog.w(TAG, "Timeout while waiting for affinity: " + key + ". "
+ "Returning timeoutAffinity=" + timeoutAffinity);
return timeoutAffinity; //超時後直接返回
}
} catch (InterruptedException e) {
Slog.w(TAG, "InterruptedException while waiting for affinity: " + key + ". "
+ "Returning affinity=" + affinity, e);
return affinity; //線程被中斷後返回緩存結果
}
affinity = Math.max(prr.getContactAffinity(), affinity); //正常情況下返回的結果
}
return affinity;
}
public void work() {
long start = SystemClock.elapsedRealtime();
if (VERBOSE) Slog.i(TAG, "Executing: validation for: " + mKey);
long timeStartMs = System.currentTimeMillis();
for (final String handle: mPendingLookups) {
LookupResult lookupResult = null;
final Uri uri = Uri.parse(handle);
if ("tel".equals(uri.getScheme())) { //處理電話號碼類型的uri
if (DEBUG) Slog.d(TAG, "checking telephone URI: " + handle);
lookupResult = resolvePhoneContact(mContext, uri.getSchemeSpecificPart());
} else if ("mailto".equals(uri.getScheme())) { //處理電子郵件類型的uri
if (DEBUG) Slog.d(TAG, "checking mailto URI: " + handle);
lookupResult = resolveEmailContact(mContext, uri.getSchemeSpecificPart());
} else if (handle.startsWith(Contacts.CONTENT_LOOKUP_URI.toString())) { //處理聯繫人lookup_uri
if (DEBUG) Slog.d(TAG, "checking lookup URI: " + handle);
lookupResult = searchContacts(mContext, uri);
} else { //非法的uri,生成默認的結果
lookupResult = new LookupResult(); // invalid person for the cache
Slog.w(TAG, "unsupported URI " + handle);
}
if (lookupResult != null) {
synchronized (mPeopleCache) {
final String cacheKey = getCacheKey(mContext.getUserId(), handle);
mPeopleCache.put(cacheKey, lookupResult); //查詢存儲到緩存
}
if (DEBUG) Slog.d(TAG, "lookup contactAffinity is " + lookupResult.getAffinity());
mContactAffinity = Math.max(mContactAffinity, lookupResult.getAffinity()); //保存結果值
} else {
if (DEBUG) Slog.d(TAG, "lookupResult is null");
}
}
...
} private LookupResult resolvePhoneContact(Context context, final String number) {
Uri phoneUri = Uri.withAppendedPath(ContactsContract.PhoneLookup.CONTENT_FILTER_URI,
Uri.encode(number));
return searchContacts(context, phoneUri);
} private LookupResult searchContacts(Context context, Uri lookupUri) {
LookupResult lookupResult = new LookupResult();
Cursor c = null;
try {
c = context.getContentResolver().query(lookupUri, LOOKUP_PROJECTION, null, null, null);
if (c == null) {
Slog.w(TAG, "Null cursor from contacts query.");
return lookupResult;
}
while (c.moveToNext()) {
lookupResult.mergeContact(c);
}
} catch (Throwable t) {
Slog.w(TAG, "Problem getting content resolver or performing contacts query.", t);
} finally {
if (c != null) {
c.close();
}
}
return lookupResult;
} public void mergeContact(Cursor cursor) {
mAffinity = Math.max(mAffinity, VALID_CONTACT);
// Contact ID
int id;
final int idIdx = cursor.getColumnIndex(Contacts._ID);
if (idIdx >= 0) {
id = cursor.getInt(idIdx);
if (DEBUG) Slog.d(TAG, "contact _ID is: " + id);
} else {
id = -1;
Slog.i(TAG, "invalid cursor: no _ID");
}
// Starred
final int starIdx = cursor.getColumnIndex(Contacts.STARRED);
if (starIdx >= 0) {
boolean isStarred = cursor.getInt(starIdx) != 0;
if (isStarred) {
mAffinity = Math.max(mAffinity, STARRED_CONTACT);
}
if (DEBUG) Slog.d(TAG, "contact STARRED is: " + isStarred);
} else {
if (DEBUG) Slog.d(TAG, "invalid cursor: no STARRED");
}
}如果要加入指定聯繫人在勿擾模式中優先，從流程分析看只要修改searchContacts方法就可以了。
