1, The apk installed by the user has been updated
public void registerReceiver(Context context) {
Slog.d("PMSdddd", "systemReady1");
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_PACKAGE_ADDED);
filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
filter.addAction(Intent.ACTION_PACKAGE_REPLACED);
filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
filter.addDataScheme("package");
BroadcastReceiver packgeMonitorReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
final String packageName =
intent.getData().getSchemeSpecificPart();
final boolean replacing =
intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
final boolean dataRemoved =
intent.getBooleanExtra(Intent.EXTRA_DATA_REMOVED, false);
Slog.d("PMSdddd", "action: " + action + " packageName:"
+ packageName + " replacing:" + replacing
+ " dataRemoved:" + dataRemoved);
}
};
context.registerReceiver(packgeMonitorReceiver, filter);
}Step 1, install apk
adb install apk
Line 52701: 02-01 21:26:23.213 1727 1727 D PMSdddd : action: android.intent.action.PACKAGE_ADDED packageName:com.adobe.reader replacing:false dataRemoved:false
Step 2: hide this apk
adb shell pm hide apk
Line 53895: 02-01 21:28:22.043 1727 1727 D PMSdddd : action: android.intent.action.PACKAGE_REMOVED packageName:com.adobe.reader replacing:false dataRemoved:false
Step 3, adb install update
adb install -r apk
Line 54477: 02-01 21:29:41.550 1727 1727 D PMSdddd : action: android.intent.action.PACKAGE_REMOVED packageName:com.adobe.reader replacing:true dataRemoved:false Line 54512: 02-01 21:29:41.648 1727 1727 D PMSdddd : action: android.intent.action.PACKAGE_ADDED packageName:com.adobe.reader replacing:true dataRemoved:false
Step 4, unhide the apk
adb shell pm unhide apk
Line 55640: 02-01 21:32:25.651 1727 1727 D PMSdddd : action: android.intent.action.PACKAGE_ADDED packageName:com.adobe.reader replacing:false dataRemoved:false
Step 5: adb uninstall uninstalls apk
Line 61310: 02-01 21:52:36.395 1727 1727 D PMSdddd : action: android.intent.action.PACKAGE_REMOVED packageName:com.adobe.reader replacing:false dataRemoved:true
Summary:
hide command: the system will send the broadcast Android intent. action. PACKAGE_ Removed, the data is not deleted
unhide command: the system will send the broadcast Android intent. action. PACKAGE_ Add, data will not be deleted
When updating apk:
The system first sends the broadcast Android intent. action. PACKAGE_ REMOVED，intent. The value obtained by getboolean extra (intent.extra_replacing, false) is true
The system then sends the broadcast Android intent. action. PACKAGE_ ADDED，intent. The value obtained by getboolean extra (intent.extra_replacing, false) is also true
When uninstalling apk:
The system sends broadcast Android intent. action. PACKAGE_ REMOVED，intent. The value obtained by getboolean extra (intent.extra_data_removed, false) is true
2, The system apk (located in the system/app directory) is updated
Step 1: preset apk(v1.0) to system/app
adb push apk system/app
Then restore the factory settings
Step 2: adb install-r updates apk to v2.0 0
Line 8118: 02-02 02:55:59.428 1130 1130 D PMSdddd : action: android.intent.action.PACKAGE_REMOVED packageName:com.example.ddd replacing:true dataRemoved:false Line 8134: 02-02 02:55:59.501 1130 1130 D PMSdddd : action: android.intent.action.PACKAGE_ADDED packageName:com.example.ddd replacing:true dataRemoved:false Line 8281: 02-02 02:55:59.903 1130 1130 D PMSdddd : action: android.intent.action.PACKAGE_REPLACED packageName:com.example.ddd replacing:true dataRemoved:false
The updated apk is installed in the data/app Directory:
Line 8550: 02-02 05:12:10.806 1132 1228 I PackageManager: Update system package com.example.ddd code path from /system/operator/app/AndroidDemoV1.0.apk to /data/app/~~IYd549AfrGeHUc-lWfY8kg==/com.example.ddd-o9yTi7O1l3Cm3EhqTvf2Rw==; Retain data and using new
Line 8550: 02-02 05:12:10.806 1132 1228 I PackageManager: Update system package com.example.ddd code path from /system/operator/app/AndroidDemoV1.0.apk to /data/app/~~IYd549AfrGeHUc-lWfY8kg==/com.example.ddd-o9yTi7O1l3Cm3EhqTvf2Rw==; Retain data and using new
Line 8551: 02-02 05:12:10.808 1132 1228 I PackageManager: Update system package com.example.ddd resource path from /system/operator/app/AndroidDemoV1.0.apk to /data/app/~~IYd549AfrGeHUc-lWfY8kg==/com.example.ddd-o9yTi7O1l3Cm3EhqTvf2Rw==; Retain data and using new
Line 8551: 02-02 05:12:10.808 1132 1228 I PackageManager: Update system package com.example.ddd resource path from /system/operator/app/AndroidDemoV1.0.apk to /data/app/~~IYd549AfrGeHUc-lWfY8kg==/com.example.ddd-o9yTi7O1l3Cm3EhqTvf2Rw==; Retain data and using newStep 3: the Settings "application information" interface cannot be uninstalled, and there are no uninstall buttons (open, disable and forced stop)
Summary:
When the system apk is updated, the system sends the broadcast: Action: Android intent. action. PACKAGE_ REMOVED,action: android.intent.action.PACKAGE_ADDED,action: android.intent.action.PACKAGE_REPLACED
And intent The value obtained by getboolean extra (intent.extra_replacing, false) is true
Android monitors multi-user switching, hides and disables the specified Apk
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_USER_SWITCHED);
filter.addAction(Intent.ACTION_USER_ADDED);
BroadcastReceiver mUserSwitchedReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL);
if (userId == UserHandle.USER_NULL) {
Slog.e("PMSdddd", "received an invalid EXTRA_USER_HANDLE");
return;
}
if (Intent.ACTION_USER_SWITCHED.equals(action) && userId > 0) {
Slog.d("PMSdddd", "User switched to userId " + userId);
AsyncTask.execute(new Runnable() {
@Override
public void run() {
Slog.d("PMSdddd", "install start11");
Sbbbbbbbbbbb.hideOtherBrandAppWhenUserSwitched();
}
});
} else if (Intent.ACTION_USER_ADDED.equals(action) && userId > 0) {
Slog.d("PMSdddd", "Added User userId " + userId);
AsyncTask.execute(new Runnable() {
@Override
public void run() {
Slog.d("PMSdddd", "install start11");Sbbbbbbbbbbb
.hideOtherBrandAppWhenUserSwitched(); } }); } } }; mContext.registerReceiver(mUserSwitchedReceiver, filter);
Hide and disable apk
/**
* only hide app but don't delete user data
*
* @param pkgName
*/
private void hide(String pkgName) {
final PackageManager pm = mContext.getPackageManager();
int userId = ActivityManager.getCurrentUser();
pm.setApplicationHiddenSettingAsUser(pkgName, true, new UserHandle(userId));
disableApplication(pkgName);
}
private void unhide(String pkgName) {
final PackageManager pm = mContext.getPackageManager();
int userId = ActivityManager.getCurrentUser();
pm.setApplicationHiddenSettingAsUser(pkgName, false, new UserHandle(userId));
enableApplication(pkgName);
}
private void disableApplication(String pkgName) {
final PackageManager pm = mContext.getPackageManager();
try {
int state = pm.getApplicationEnabledSetting(pkgName);
Slog.d(TAG, "disableApplication state: " + state + " pkgName:" + pkgName);
if (state == PackageManager.COMPONENT_ENABLED_STATE_DISABLED)
return;
pm.setApplicationEnabledSetting(pkgName, PackageManager.COMPONENT_ENABLED_STATE_DISABLED, 0);
} catch (IllegalArgumentException exeption) {
Slog.w(TAG, "disableApplication error:" + exeption.getMessage());
}
}
private void enableApplication(String pkgName) {
final PackageManager pm = mContext.getPackageManager();
try {
int state = pm.getApplicationEnabledSetting(pkgName);
Slog.d(TAG, "enableApplication state: " + state + " pkgName:" + pkgName);
if (state == PackageManager.COMPONENT_ENABLED_STATE_ENABLED)
return;
pm.setApplicationEnabledSetting(pkgName, PackageManager.COMPONENT_ENABLED_STATE_ENABLED, 0);
} catch (IllegalArgumentException exeption) {
Slog.w(TAG, "enableApplication error:" + exeption.getMessage());
}
}Hidden apk or disable d apk. The information is saved in / data / system / users / 0 / package restrictions XML file
<pkg name="com.google.android.apps.maps" ceDataInode="4439" enabled="3" enabledCaller="com.android.settings" domainVerificationStatus="2" app-link-generation="4"> <pkg name="com.google.android.apps.maps" ceDataInode="4439" enabled="2" enabledCaller="android" domainVerificationStatus="2" app-link-generation="4">
<pkg name="com.amazon.appmanager" ceDataInode="4472" hidden="true" enabled="2" enabledCaller="android" /> <pkg name="com.google.android.apps.maps" ceDataInode="4439" enabled="3" enabledCaller="com.android.settings" domainVerificationStatus="2" app-link-generation="4">
Information saved after apk is hidden: hidden="true"
After apk is disable d, the value of enabled = will be different according to the constant parameters passed in setApplicationEnabledSetting, as described below:
public static final int COMPONENT_ENABLED_STATE_DISABLED = 2; // When disabling an application, if this parameter is passed in, the application has no icon on the desktop, and there is no icon in the setting interface and application list (the application is completely hidden) public static final int COMPONENT_ENABLED_STATE_DISABLED_USER = 3; // When disabling an application, if this parameter is passed in, the application has no icon on the desktop, but there are icons in the setting interface and application list (only the desktop icon is hidden, the icon can still be seen in the setting, and the user can enable the application again)
In addition: ADB shell PM disable user application package name: equivalent to the passed in parameter is COMPONENT_ENABLED_STATE_DISABLED.
How to check which apps on the phone are disable d:
Method 1: adb shell pm list packages -d
C:\Users\zzz>adb shell pm list packages -d
package:com.facebook.services
package:com.google.android.videos
package:com.facebook.appmanager
Method 2: ADB shell PM dump packages > Desktop / log2 txt
Enabled = 2 ---- > indicates that the application is in the disable state. The corresponding value is COMPONENT_ENABLED_STATE_DISABLED
Package [com.facebook.appmanager] (a926214):
userId=10098
pkg=Package{9ae0abd com.facebook.appmanager}
codePath=/system/app/appmanager
resourcePath=/system/app/appmanager
legacyNativeLibraryDir=/system/app/appmanager/lib
primaryCpuAbi=arm64-v8a
secondaryCpuAbi=null
versionCode=277606887 minSdk=21 targetSdk=30
versionName=67.3.0
splits=[base]
apkSigningVersion=2
applicationInfo=ApplicationInfo{9ae0abd com.facebook.appmanager}
flags=[ SYSTEM HAS_CODE ALLOW_CLEAR_USER_DATA ]
privateFlags=[ PRIVATE_FLAG_ACTIVITIES_RESIZE_MODE_RESIZEABLE_VIA_SDK_VERSION ALLOW_AUDIO_PLAYBACK_CAPTURE HAS_DOMAIN_URLS PRIVATE_FLAG_ALLOW_NATIVE_HEAP_POINTER_TAGGING ]
forceQueryable=false
queriesIntents=[Intent { act=com.facebook.secure.packagefinder.intent.ACTION_QUERY_PACKAGES }]
dataDir=/data/user/0/com.facebook.appmanager
supportsScreens=[small, medium, large, xlarge, resizeable, anyDensity]
timeStamp=2021-07-12 23:30:37
firstInstallTime=2021-07-12 23:30:37
lastUpdateTime=2021-07-12 23:30:37
signatures=PackageSignatures{18e58b2 version:2, signatures:[c4e416cc], past signatures:[]}
installPermissionsFixed=true
pkgFlags=[ SYSTEM HAS_CODE ALLOW_CLEAR_USER_DATA ]
declared permissions:
com.facebook.appmanager.ACCESS: prot=signature, INSTALLED
com.facebook.appmanager.API_ACCESS: prot=normal, INSTALLED
install permissions:
android.permission.DOWNLOAD_WITHOUT_NOTIFICATION: granted=true
android.permission.FOREGROUND_SERVICE: granted=true
android.permission.RECEIVE_BOOT_COMPLETED: granted=true
android.permission.INTERNET: granted=true
android.permission.GET_PACKAGE_SIZE: granted=true
com.facebook.appmanager.ACCESS: granted=true
android.permission.ACCESS_NETWORK_STATE: granted=true
android.permission.ACCESS_WIFI_STATE: granted=true
android.permission.WAKE_LOCK: granted=true
User 0: ceDataInode=4785 installed=true hidden=false suspended=false distractionFlags=0 stopped=false notLaunched=false enabled=2 instant=false virtual=false
overlay paths:
/product/overlay/NavigationBarModeGestural/NavigationBarModeGesturalOverlay.apk
lastDisabledCaller: android
gids=[3003]Check which apps belong to the system signature?
Method: ADB shell PM dump packages > Desktop / log2 txt
The apk with the package name "android" belongs to the platform apk and must be the system signature. First, take a look at the signature information of the apk with the package name "android":
Package [android] (ad28bfa):
userId=1000
sharedUser=SharedUserSetting{769a3df android.uid.system/1000}
pkg=Package{6103b22 android}
codePath=/system/framework/framework-res.apk
resourcePath=/system/framework/framework-res.apk
legacyNativeLibraryDir=/system/lib64/framework-res
primaryCpuAbi=arm64-v8a
secondaryCpuAbi=null
versionCode=30 minSdk=30 targetSdk=30
versionName=11
splits=[base]
apkSigningVersion=3
applicationInfo=ApplicationInfo{6103b22 android}
flags=[ SYSTEM PERSISTENT ALLOW_BACKUP ]
privateFlags=[ PRIVATE_FLAG_ACTIVITIES_RESIZE_MODE_RESIZEABLE_VIA_SDK_VERSION ALLOW_AUDIO_PLAYBACK_CAPTURE DEFAULT_TO_DEVICE_PROTECTED_STORAGE DIRECT_BOOT_AWARE PRIVILEGED PRIVATE_FLAG_ALLOW_NATIVE_HEAP_POINTER_TAGGING ]
forceQueryable=true
queriesPackages=[]
dataDir=/data/system
supportsScreens=[small, medium, large, xlarge, resizeable, anyDensity]
timeStamp=2021-07-12 23:27:41
firstInstallTime=2021-07-12 23:27:41
lastUpdateTime=2021-07-12 23:27:41
signatures=PackageSignatures{539b9b3 version:3, signatures:[a0521abc], past signatures:[]}
installPermissionsFixed=true
pkgFlags=[ SYSTEM PERSISTENT ALLOW_BACKUP ]
declared permissions:
android.permission.READ_CONTACTS: prot=dangerous, INSTALLED
android.permission.WRITE_CONTACTS: prot=dangerous, INSTALLED
........
User 0: ceDataInode=4316 installed=true hidden=false suspended=false distractionFlags=0 stopped=false notLaunched=false enabled=0 instant=false virtual=false
overlay paths:
/product/overlay/NavigationBarModeGestural/NavigationBarModeGesturalOverlay.apk
From the above information, you can see the signature information: signatures:[a0521abc], and then in log2 Txt file global search "a0521abc", you can list all applications signed by the system.
Conclusion: the follow-up will be continuously updated. If you like, please pay attention to it.
Related video
[Android advanced] reinforcement and optimization of APK