🐛: fix: #29

Author: junerver

app/src/main/java/xyz/junerver/composehooks/example/UseDeviceInfoExample.kt

@@ -10,6 +10,7 @@ import androidx.compose.material3.Surface
 import androidx.compose.material3.Switch
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
 import xyz.junerver.compose.hooks.useDisableScreenshot
@@ -32,7 +33,7 @@ import xyz.junerver.composehooks.ui.component.TButton
 */
 @Composable
 fun UseDeviceInfoExample() {
-    val batteryInfo = useBatteryInfo()
+    val batteryInfo by useBatteryInfo()
     val buildInfo = useBuildInfo()
     val screenInfo = useScreenInfo()
     val (disable, enable, isDisable) = useDisableScreenshot()

hooks/src/main/kotlin/xyz/junerver/compose/hooks/declare.kt

@@ -5,6 +5,7 @@ package xyz.junerver.compose.hooks
 import android.hardware.Sensor
 import android.hardware.SensorEvent
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.State
 import arrow.core.Either
 import arrow.core.Tuple4
 import arrow.core.Tuple5
@@ -32,7 +33,7 @@ import xyz.junerver.kotlin.Tuple3
 
 //region useDeviceInfo
 @Composable
-fun rememberBatteryInfo(): BatteryInfo = useBatteryInfo()
+fun rememberBatteryInfo(): State<BatteryInfo> = useBatteryInfo()
 
 @Composable
 fun rememberBuildInfo(): BuildInfo = useBuildInfo()

hooks/src/main/kotlin/xyz/junerver/compose/hooks/usedeviceinfo/useBatteryInfo.kt

@@ -1,12 +1,15 @@
 package xyz.junerver.compose.hooks.usedeviceinfo
 
+import android.content.BroadcastReceiver
+import android.content.Context
 import android.content.Intent
 import android.content.IntentFilter
 import android.os.BatteryManager
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.getValue
+import androidx.compose.runtime.Stable
+import androidx.compose.runtime.State
+import androidx.compose.runtime.produceState
 import androidx.compose.ui.platform.LocalContext
-import xyz.junerver.compose.hooks.useState
 
 /*
   Description:
@@ -16,24 +19,29 @@ import xyz.junerver.compose.hooks.useState
   Version: v1.0
 */
 @Composable
-fun useBatteryInfo(): BatteryInfo {
-    val batteryStatus = LocalContext.current.registerReceiver(
-        null,
-        IntentFilter(Intent.ACTION_BATTERY_CHANGED)
-    )
-    val level by useState {
-        val level = batteryStatus?.getIntExtra(BatteryManager.EXTRA_LEVEL, 0) ?: 0
-        val scale = batteryStatus?.getIntExtra(BatteryManager.EXTRA_SCALE, 0) ?: 0
-        (level / scale.toFloat() * 100).toInt()
-    }
-    val isCharging by useState {
-        val status = batteryStatus?.getIntExtra(BatteryManager.EXTRA_STATUS, -1) ?: -1
-        status == BatteryManager.BATTERY_STATUS_CHARGING || status == BatteryManager.BATTERY_STATUS_FULL
+fun useBatteryInfo(): State<BatteryInfo> {
+    val context = LocalContext.current
+    return produceState(initialValue = BatteryInfo()) {
+        val receiver = object : BroadcastReceiver() {
+            override fun onReceive(context: Context?, intent: Intent?) {
+                val status = intent?.getIntExtra(BatteryManager.EXTRA_STATUS, -1) ?: -1
+                val isCharging = status == BatteryManager.BATTERY_STATUS_CHARGING || status == BatteryManager.BATTERY_STATUS_FULL
+                val originLevel = intent?.getIntExtra(BatteryManager.EXTRA_LEVEL, 0) ?: 0
+                val scale = intent?.getIntExtra(BatteryManager.EXTRA_SCALE, 0) ?: 0
+                val level = (originLevel / scale.toFloat() * 100).toInt()
+                value = BatteryInfo(level, isCharging)
+            }
+        }
+        context.registerReceiver(receiver, IntentFilter(Intent.ACTION_BATTERY_CHANGED))
+
+        awaitDispose {
+            context.unregisterReceiver(receiver)
+        }
     }
-    return BatteryInfo(level, isCharging)
 }
 
+@Stable
 data class BatteryInfo(
-    val level: Int,
-    val isCharging: Boolean,
+    val level: Int = -1,
+    val isCharging: Boolean = false,
 )