让时间戳在火力地堡

代码示例

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火力地堡的查询时间戳

Query query = mFirestore.collection("rootcollection")
    .orderBy("timestamp", Query.Direction.DESCENDING)
    .whereEqualTo("month", 3);
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时间戳火力地堡

// Example 4: Compute Timestamp from Java `System.currentTimeMillis()`.

long millis = System.currentTimeMillis();

Timestamp timestamp = 
  Timestamp.newBuilder()
           .setSeconds(millis / 1000)
           .setNanos((int)(millis % 1000 * 1_000_000))
           .build();

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