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Code Issues Packages Projects Releases Wiki Activity

Use weak reference to track activity

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topjohnwu 2022-06-02 02:18:11 -07:00
parent 47e7a0a434
commit 9ab7550970
1 changed files with 6 additions and 5 deletions
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11
app/src/main/java/com/topjohnwu/magisk/core/App.kt
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@ -1,6 +1,5 @@
package com.topjohnwu.magisk.core package com.topjohnwu.magisk.core
import android.annotation.SuppressLint
import android.app.Activity import android.app.Activity
import android.app.Application import android.app.Application
import android.content.Context import android.content.Context
@ -15,6 +14,7 @@ import com.topjohnwu.superuser.internal.UiThreadHandler
import com.topjohnwu.superuser.ipc.RootService import com.topjohnwu.superuser.ipc.RootService
import kotlinx.coroutines.Dispatchers import kotlinx.coroutines.Dispatchers
import timber.log.Timber import timber.log.Timber
import java.lang.ref.WeakReference
import kotlin.system.exitProcess import kotlin.system.exitProcess
open class App() : Application() { open class App() : Application() {
@ -81,20 +81,21 @@ open class App() : Application() {
} }
} }
@SuppressLint("StaticFieldLeak")
object ActivityTracker : Application.ActivityLifecycleCallbacks { object ActivityTracker : Application.ActivityLifecycleCallbacks {
val foreground: Activity? get() = ref.get()
@Volatile @Volatile
var foreground: Activity? = null private var ref = WeakReference<Activity>(null)
override fun onActivityResumed(activity: Activity) { override fun onActivityResumed(activity: Activity) {
if (activity is SuRequestActivity) return if (activity is SuRequestActivity) return
foreground = activity ref = WeakReference(activity)
} }
override fun onActivityPaused(activity: Activity) { override fun onActivityPaused(activity: Activity) {
if (activity is SuRequestActivity) return if (activity is SuRequestActivity) return
foreground = null ref.clear()
} }
override fun onActivityCreated(activity: Activity, bundle: Bundle?) {} override fun onActivityCreated(activity: Activity, bundle: Bundle?) {}