Blocker

about

description

Blocker is a component controller for Android applications that currently supports using PackageManager and Intent Firewall to manage the state of components. It can be seamlessly switched between these controllers, and for application rules, you can export and import them. Additionally, it is compatible with backup files generated by MyAndroidTools, and you can effortlessly convert them to Intent Firewall rules. The application also has the potential to be extended in the future. Advantages - Lightweight, don't burden the system - Easy to use - Supports multiple control types Introduction to different component controllers Package Manager The Android system provides a tool called PackageManager, which is used for managing installed applications or obtaining information about them. One of its methods, _setComponentEnabledSetting(ComponentName, int, int)_, allows an application to control the state of its own components. If attempting to use this method to control components in other applications, a signature permission is required, or the call will fail. Fortunately, Android provides another tool called _pm_ that allows users to control component states in command-line mode. However, the _pm_ tool requires root permission to run. The following command can be used to disable a specific package or component: pm disable [PackageName/ComponentName] Whether using PackageManager in the code or _pm_ in command-line mode, the configurations will be written to _/data/system/users/0/package_restrictions.xml_. Intent Firewall Mode Intent Firewall was introduced in Android 4.4.2 (API 19) and is still effective in the latest Android systems. It is integrated into the Android Framework to filter the intents sent by applications or systems. What Intent Firewall can do Each intent sent by an application is filtered by the Intent Firewall, with rules stored in XML files. The Intent Firewall updates rules immediately if changes occur in the configuration file. Limitations of Intent Firewall Only system applications can read and write the directory where the configuration file is stored, and third-party applications do not have permission to access it. Differences between Intent Firewall and Package Manager Intent Firewall, indeed it is a firewall, it has no impact on component status. The application detects the component is on, but it just cannot start the component. For the components disabled by PackageManager, if an application starts it, an exception will be thrown. Developers can catch this exception to know whether the component is disabled or not, so they could re-enable this component. That's the reason why the components will be enabled unexpectedly. If you are using an Intent Firewall controller, there will be no problems. UI The app was designed using Material 3 guidelines. Huge thanks to our UI designer: [@COPtimer](https://github.com/COPtimer) The Screens and UI elements are built entirely using Jetpack Compose. The app has two themes: - Dynamic color - uses colors based on the user's current color theme (if supported) - Default theme - uses predefined colors when dynamic color is not supported Each theme also supports dark mode.

publisher

78ce6faa72264387284e647ba6938995735ec8c7d5c5a65737e55130f026307d

first seen

2026-10-08T01:50:23.256506+00:00

last event

2026-10-22 05:43 UTC

install

zapstore.dev or any Zapstore-compatible client

topics

#app manager #system

source & build

repository

https://github.com/lihenggui/blocker

arch flags

android-arm64-v8a android-armeabi-v7a android-x86 android-x86_64

manifest

missing

releases (kind 30063)

2 releases indexed; latest 2.0.6447.

version	channel	released	event
2.0.6447	main	2026-10-22 05:43 UTC	2cd9d5fc…
2.0.5839	main	2025-10-19 23:26 UTC	1893bd73…

assets & verification

Every app, release and asset event is schnorr-verified (NIP-01 id + signature) before it enters the catalog, and assets are content-addressed by sha256. We subscribe read-only to the catalog relay — never write to it.

2.0.6447 — Blocker-2.0.6447-foss-release.apk

sha256

45d01da229acb53bf95c7f17d4aa02495a1bbbd0d8a4f13800be626692fa309e

size

8.5 MB

archs

android-arm64-v8a, android-armeabi-v7a, android-x86, android-x86_64

version code

6447

apk cert sha256

4b9f7f5390a12a93e4449093bec7bd46e602e492fdd1eef2dfc0b60d2a1a518a

download

Blocker-2.0.6447-foss-release.apk

2.0.5839 — Blocker-2.0.5839-foss-release.apk

sha256

78679dc5d1a7d1bc086da3d8c7f084523d2fdb2a464474098c307f1f126becd4

size

8.2 MB

archs

android-arm64-v8a, android-armeabi-v7a, android-x86, android-x86_64

version code

5839

apk cert sha256

4b9f7f5390a12a93e4449093bec7bd46e602e492fdd1eef2dfc0b60d2a1a518a

download

Blocker-2.0.5839-foss-release.apk

Showing the newest 2 asset descriptors; the full set is in /api/apps/78ce6faa…