Unverified50% confidenceFactExact time
Android 自 8.0（Oreo）起引入通知渠道（Notification Channels），允许应用为不同通知创建独立渠道，用户可对每个渠道单独设置从「紧急」到「低」四个重要性等级
1
Sources
50%
Confidence
Long-term
Relevance
8/19/2026
First Seen
Sources
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