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Start on boot: an opt-in setting for boxes without a firmware autorun (#255) #256
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,126 @@ | ||
| /* | ||
| * | ||
| * Copyright (c) OpenIPC https://openipc.org Prosperity Public License 3.0.0 | ||
| * | ||
| * BootReceiver.java — opens the app after the device boots, when Start on boot is on (#255) | ||
| * | ||
| */ | ||
|
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| package com.openipc.decoder; | ||
|
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| import android.annotation.TargetApi; | ||
| import android.content.BroadcastReceiver; | ||
| import android.content.Context; | ||
| import android.content.Intent; | ||
| import android.graphics.PixelFormat; | ||
| import android.os.Build; | ||
| import android.os.Handler; | ||
| import android.os.Looper; | ||
| import android.provider.Settings; | ||
| import android.util.Log; | ||
| import android.view.View; | ||
| import android.view.WindowManager; | ||
|
|
||
| import java.util.LinkedHashMap; | ||
| import java.util.Map; | ||
|
|
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| public class BootReceiver extends BroadcastReceiver { | ||
| private static final String TAG = "OpenIPCDecoder"; | ||
| /** In the "settings" preferences, so Reset (#171) turns it off too. */ | ||
| static final String PREF = "start_on_boot"; | ||
|
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| static boolean enabled(Context context) { | ||
| return context.getSharedPreferences("settings", Context.MODE_PRIVATE) | ||
| .getBoolean(PREF, false); | ||
| } | ||
|
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| static void setEnabled(Context context, boolean on) { | ||
| context.getSharedPreferences("settings", Context.MODE_PRIVATE).edit() | ||
| .putBoolean(PREF, on).apply(); | ||
| } | ||
|
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| /** | ||
| * Android 10+ starts an activity from the background only for an app that may draw over | ||
| * other apps; many TV boxes have no screen to allow it, adb does (appops). | ||
| */ | ||
| static boolean overlayNeeded() { | ||
| return Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q; | ||
| } | ||
|
|
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| static boolean overlayAllowed(Context context) { | ||
| return !overlayNeeded() || Settings.canDrawOverlays(context); | ||
| } | ||
|
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| /** For /stats.json, with or without an activity (Qodo on #256). */ | ||
| static Map<String, Object> state(Context context) { | ||
| Map<String, Object> m = new LinkedHashMap<>(); | ||
| m.put("on", enabled(context)); | ||
| m.put("overlay", !overlayNeeded() ? "not needed" | ||
| : overlayAllowed(context) ? "allowed" : "missing"); | ||
| return m; | ||
| } | ||
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| @Override | ||
| public void onReceive(Context context, Intent intent) { | ||
| if (!Intent.ACTION_BOOT_COMPLETED.equals(intent.getAction())) return; | ||
| if (!enabled(context)) return; | ||
| // A firmware autorun opened it already: another start would pause and resume it, | ||
| // which restarts every stream | ||
| if (Decoder.openOrOpening()) { | ||
| Log.i(TAG, "Start on boot: the app is open already"); | ||
| return; | ||
|
compot-dev marked this conversation as resolved.
Resolved
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| } | ||
| if (!overlayAllowed(context)) { | ||
| Log.w(TAG, "Start on boot: no permission to draw over other apps, Android may block the start"); | ||
| } | ||
| Log.i(TAG, "Start on boot: opening the app"); | ||
| Intent start = new Intent(context, Decoder.class); | ||
| start.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); | ||
| // Android 15+ lets an app that targets 35+ start from the background with this | ||
| // permission only while one of its overlay windows is visible (Qodo on #256) | ||
| View overlay = Build.VERSION.SDK_INT >= 35 && overlayAllowed(context) | ||
| ? showOverlay(context) : null; | ||
| try { | ||
| context.startActivity(start); | ||
|
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There was a problem hiding this comment. 4. Boot start on android 15+ may still be blocked onReceive calls showOverlay() and then calls context.startActivity(start) straight away, in the same main-thread turn. wm.addView only queues the window: the 1×1 view has not been laid out, drawn or put on screen when startActivity runs, so the overlay may not count as visible yet when Android 15+ decides whether to allow the background start. In that case the start is blocked even with the permission granted, the 2 s postDelayed only removes the overlay afterwards, and the Android 10 device test does not cover this path. Agent Prompt
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| } catch (RuntimeException e) { | ||
| Log.w(TAG, "Start on boot failed", e); | ||
| } | ||
| if (overlay != null) { | ||
| PendingResult pending = goAsync(); | ||
| new Handler(Looper.getMainLooper()).postDelayed(() -> { | ||
| removeOverlay(context, overlay); | ||
| pending.finish(); | ||
| }, OVERLAY_MS); | ||
| } | ||
| } | ||
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| /** Long enough for the start to pass the check, short enough to stay well under 10 s. */ | ||
| private static final long OVERLAY_MS = 2000; | ||
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| /** A 1×1 transparent window that takes no touch or focus; null if it cannot be shown. */ | ||
| @TargetApi(35) | ||
| private static View showOverlay(Context context) { | ||
| WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); | ||
| View v = new View(context.getApplicationContext()); | ||
| WindowManager.LayoutParams lp = new WindowManager.LayoutParams(1, 1, | ||
| WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY, | ||
| WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | ||
| | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE, | ||
| PixelFormat.TRANSPARENT); | ||
| try { | ||
| wm.addView(v, lp); | ||
| return v; | ||
| } catch (RuntimeException e) { | ||
| Log.w(TAG, "Start on boot: no overlay window", e); | ||
| return null; | ||
| } | ||
| } | ||
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| private static void removeOverlay(Context context, View v) { | ||
| try { | ||
| ((WindowManager) context.getSystemService(Context.WINDOW_SERVICE)).removeView(v); | ||
| } catch (RuntimeException e) { | ||
| Log.w(TAG, "Start on boot: overlay window not removed", e); | ||
| } | ||
| } | ||
| } | ||
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