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refactor: use
ACTION_TIME_TICK receiver for time updates
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56 changes: 56 additions & 0 deletions
56
app/src/main/java/com/geeksville/mesh/ui/components/TimeTickWithLifecycle.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| package com.geeksville.mesh.ui.components | ||
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| import android.content.BroadcastReceiver | ||
| import android.content.Context | ||
| import android.content.Intent | ||
| import android.content.IntentFilter | ||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.getValue | ||
| import androidx.compose.runtime.mutableLongStateOf | ||
| import androidx.compose.runtime.remember | ||
| import androidx.compose.runtime.setValue | ||
| import androidx.compose.ui.platform.LocalContext | ||
| import androidx.lifecycle.compose.LifecycleResumeEffect | ||
|
|
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| @Composable | ||
| fun rememberTimeTickWithLifecycle(): Long { | ||
| val context = LocalContext.current | ||
| var value by remember { mutableLongStateOf(System.currentTimeMillis()) } | ||
| val receiver = TimeBroadcastReceiver { value = System.currentTimeMillis() } | ||
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| LifecycleResumeEffect(Unit) { | ||
| receiver.register(context) | ||
| value = System.currentTimeMillis() | ||
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| onPauseOrDispose { | ||
| receiver.unregister(context) | ||
| } | ||
| } | ||
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| return value | ||
| } | ||
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| private class TimeBroadcastReceiver( | ||
| val onTimeChanged: () -> Unit, | ||
| ) : BroadcastReceiver() { | ||
| private var registered = false | ||
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| override fun onReceive(context: Context, intent: Intent) { | ||
| onTimeChanged() | ||
| } | ||
|
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| fun register(context: Context) { | ||
| if (!registered) { | ||
| val filter = IntentFilter(Intent.ACTION_TIME_TICK) | ||
| context.registerReceiver(this, filter) | ||
| registered = true | ||
| } | ||
| } | ||
|
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| fun unregister(context: Context) { | ||
| if (registered) { | ||
| context.unregisterReceiver(this) | ||
| registered = false | ||
| } | ||
| } | ||
| } |