Android - how to receive broadcast intents ACTION_SCREEN_ON/OFF?

user_53330 0
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    <application>
         <receiver android:name=".MyBroadcastReceiver" android:enabled="true">
                <intent-filter>
                      <action android:name="android.intent.action.ACTION_SCREEN_ON"></action>
                      <action android:name="android.intent.action.ACTION_SCREEN_OFF"></action>
                </intent-filter>
         </receiver>
...
    </application>

MyBroadcastReceiver is set just to spit foo to the logs. Does nothing. Any suggestions please? Do I need to assign any permissions to catch the intent?

broadcast android
5 Answers

Here is the kotlin version of @cmcromance (Thanks for your answer. Please don't forget to upvote the original answer)

private var mPowerKeyReceiver: BroadcastReceiver? = null

    private fun registBroadcastReceiver() {
        val theFilter = IntentFilter()
        /** System Defined Broadcast  */
        theFilter.addAction(Intent.ACTION_SCREEN_ON)
        theFilter.addAction(Intent.ACTION_SCREEN_OFF)

        mPowerKeyReceiver = object : BroadcastReceiver() {
            override fun onReceive(context: Context?, intent: Intent?) {

                Log.e("onReceive", "onReceive called")
                val strAction = intent!!.action

//                if (strAction == Intent.ACTION_SCREEN_OFF || strAction == Intent.ACTION_SCREEN_ON) {
                if (strAction == Intent.ACTION_SCREEN_ON) {
                    // > Your playground~!
                    Log.e("strAction", strAction)
                    val intent = Intent(context, SplashScreenMainAppActivity::class.java)
                    startActivity(intent)
                }

            }
        }

        applicationContext.registerReceiver(mPowerKeyReceiver, theFilter)
    }

    private fun unregisterReceiver() {
        val apiLevel = Build.VERSION.SDK_INT

        if (apiLevel >= 7) {
            try {
                applicationContext.unregisterReceiver(mPowerKeyReceiver)
            } catch (e: IllegalArgumentException) {
                mPowerKeyReceiver = null
            }

        } else {
            applicationContext.unregisterReceiver(mPowerKeyReceiver)
            mPowerKeyReceiver = null
        }
    }
user_17170360
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