1.添加时间获取工具类。

app/src/main/java/com/xhly/manageapp/utils/SystemClock.java

@@ -0,0 +1,52 @@
+package com.xhly.manageapp.utils;
+
+import java.text.SimpleDateFormat;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicLong;
+
+/**
+ * @author ywx
+ * @classname SystemClock
+ * @description todo
+ * @date 2022/11/9 20:31
+ **/
+public class SystemClock {
+    private static final SystemClock MILLIS_CLOCK = new SystemClock(1);
+    private final long precision;
+    private final AtomicLong now;
+
+    private SystemClock(long precision) {
+        this.precision = precision;
+        now = new AtomicLong(System.currentTimeMillis());
+        scheduleClockUpdating();
+    }
+
+    public static SystemClock millisClock() {
+        return MILLIS_CLOCK;
+    }
+
+    private void scheduleClockUpdating() {
+        ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor(runnable -> {
+            Thread thread = new Thread(runnable, "system.clock");
+            thread.setDaemon(true);
+            return thread;
+        });
+        scheduler.scheduleAtFixedRate(() -> now.set(System.currentTimeMillis()), precision, precision, TimeUnit.MILLISECONDS);
+    }
+
+    public long now() {
+        return now.get();
+    }
+
+    public static int getSecondTimestamp(){
+        String timestamp = String.valueOf(SystemClock.millisClock().now()/1000);
+        return Integer.valueOf(timestamp);
+    }
+
+    public static String getDateString(Long time){
+        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy年MM月d日 HH:mm:ss");
+        return dateFormat.format(time);
+    }
+}