feat(android): add download status notifications for 1.0.3

2026-10-18 21:57:41 +08:00
parent 7f493e0f89
commit 836d876783
9 changed files with 257 additions and 15 deletions
@@ -0,0 +1,55 @@
+package ren.misaka.dshapp
+
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.content.Context
+import android.os.SystemClock
+import android.text.format.Formatter
+import java.util.UUID
+
+internal class DownloadNotifications(context: Context, private val name: String, headers: Map<String, String>) {
+    private val context = context.applicationContext
+    private val tag = UUID.randomUUID().toString()
+    private val progress = DownloadProgress(headers)
+
+    @Synchronized fun update(bytes: Int = 0) {
+        if (progress.finished) return
+        progress.add(bytes)
+        if (!progress.shouldUpdate(SystemClock.elapsedRealtime())) return
+        post(null)
+    }
+
+    @Synchronized fun finish(status: String) {
+        if (progress.finish()) post(status)
+    }
+
+    private fun post(status: String?) {
+        runCatching {
+            val manager = context.getSystemService(NotificationManager::class.java)
+            manager.createNotificationChannel(NotificationChannel(CHANNEL, "下载", NotificationManager.IMPORTANCE_LOW).apply {
+                lockscreenVisibility = Notification.VISIBILITY_PRIVATE
+                setShowBadge(false)
+            })
+            val percent = progress.percent
+            val size = Formatter.formatShortFileSize(context, progress.written)
+            val text = status ?: (if (percent == null) "正在下载 · 已写入 $size" else "正在下载 · $percent% · 已写入 $size")
+            val notification = Notification.Builder(context, CHANNEL)
+                .setSmallIcon(android.R.drawable.stat_sys_download)
+                .setContentTitle(name).setContentText(text)
+                .setVisibility(Notification.VISIBILITY_PRIVATE)
+                .setOnlyAlertOnce(true).setOngoing(status == null)
+                .setProgress(if (status == null) 100 else 0, if (status == null) percent ?: 0 else 0, status == null && percent == null)
+                .build()
+            manager.notify(tag, 0, notification)
+        }.onFailure {
+            if (status != null) runCatching {
+                context.getSystemService(NotificationManager::class.java).cancel(tag, 0)
+            }
+        }
+    }
+
+    companion object {
+        private const val CHANNEL = "downloads"
+    }
+}