Develop Reference

PackageManager throws NameNotFoundException for all apps even for my own app

I'm loading all apps from android and then I display them in my launcher (icon + name). Code looks like following:
public class PhoneAppItem
{
String mPackageName = null;
String mActivityName = null;
String mName = null;
ActivityInfo mActivityInfo = null;
public PhoneAppItem(String packageName, String activityName)
{
mPackageName = packageName;
mActivityName = activityName;
}
public void loadInfo()
{
PackageManager pm = MainApp.get().getPackageManager();
try
{
// following line throws the exception!
mActivityInfo = pm.getActivityInfo(new ComponentName(mPackageName, mActivityName), 0);
// some other code...
}
catch (PackageManager.NameNotFoundException e)
{
L.e(e);
mName = mPackageName;
}
catch (NullPointerException e)
{
L.e(e);
mName = mPackageName;
}
}
}
Package names and activity names for all my PhoneAppItem items are retrieved like following (for android < 5 which is relevant for the only yet known device having this issue):
List<PhoneAppItem> apps = new ArrayList<>();
ActivityManager activityManager = (ActivityManager) MainApp.get().getSystemService(Context.ACTIVITY_SERVICE);
List<ActivityManager.RunningAppProcessInfo> processInfos = activityManager.getRunningAppProcesses();
for (ActivityManager.RunningAppProcessInfo processInfo : processInfos)
{
try
{
ApplicationInfo ai = pm.getApplicationInfo(processInfo.processName, 0);
if (!excludedPackages.contains(ai.packageName))
apps.add(new PhoneAppItem(ai.packageName, ai.className));
}
catch (PackageManager.NameNotFoundException e) {}
}
I now have a user that get's following exception:
android.content.pm.PackageManager$NameNotFoundException: ComponentInfo{com.package.myapp/com.package.myapp.app.MainApp}
at android.app.ApplicationPackageManager.getActivityInfo(ApplicationPackageManager.java:262)
at com.package.myap.classes.PhoneAppItem.h(PhoneAppItem.java:70)
...
Observations
the exception above is thrown for all apps, even for my own app
until now, this behaviour is unique to one user using following hardware: Lenovo Yoga Tablet HD+ (b8080), Android 4.4.2
Question
Does anyone have an idea why this could happen?

If processInfo.processName does not work, try another method of getting package:
processInfo.pkgList[0]

ApplicationInfo for Settings pages in android

I'm trying to get the ApplicationInfo for Settings.ACTION_ACCESSIBILITY_SETTINGS or Settings.ACTION_BATTERY_SAVER_SETTINGS, so that I can launch them directly.
I tried following steps but it's return setting's ApplicationInfo.
private static final String[] SETTINGS_ACTION_MENUS = new String[]{
Settings.ACTION_ACCESSIBILITY_SETTINGS,Settings.ACTION_ADD_ACCOUNT};
public void getSettingPages(){
for(String menu : SETTINGS_ACTION_MENUS){
final Intent intent = new Intent(menu);
ComponentName componentName = intent.resolveActivity(packageManager);
if(componentName != null){
try {
ApplicationInfo info = packageManager.getApplicationInfo(componentName.getPackageName(),0);
if(packageManager.getLaunchIntentForPackage(info.packageName) != null){
launchableApps.add(info);
}
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
}
}
}

I tried following steps but it's return setting's ApplicationInfo
That is because those Intent actions are tied to activities in the Settings app. Individual activities do not have their own ApplicationInfo.

Filter apps from apps list based on internet permission android

Sorry for this question but i want to filter the apps list with permission name INTERNET
how can i do that ?
<uses-permission android:name="android.permission.INTERNET" />
trying something like this
PackageManager pm = context.getPackageManager();
List<ResolveInfo> activities = pm.queryIntentActivities(intent, 0);
for (ResolveInfo ri : activities) {
ApplicationInfoclass info = new ApplicationInfoclass();
// Add the non system package to the list
try {
PackageInfo pInfo = context.getPackageManager().getPackageInfo(ri.activityInfo.packageName, 0);
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
info.packageName = ri.activityInfo.packageName;
info.name = (String) ri.loadLabel(pm);
info.icon = ri.activityInfo.loadIcon(pm);
apps.add(info);
}

PackageManager pm = context.getPackageManager();
for (ResolveInfo ri : pm.queryIntentActivities(intent, 0)) {
try {
PackageInfo packageInfo = pm.getPackageInfo(ri.activityInfo.packageName, 0);
for (PermissionInfo permissionInfo : packageInfo.permissions) {
if (permissionInfo.name.equals(Manifest.permission.INTERNET)) {
//package has internet permission, do something with it
break;
}
}
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
}

How can I find if a particular package exists on my Android device?

How can I find whether a particular package or application, say: com.android.abc, exists on my Android device?

Call any of the below method with the package name.
import android.content.pm.PackageManager;
// ...
public boolean isPackageExisted(String targetPackage){
List<ApplicationInfo> packages;
PackageManager pm;
pm = getPackageManager();
packages = pm.getInstalledApplications(0);
for (ApplicationInfo packageInfo : packages) {
if(packageInfo.packageName.equals(targetPackage))
return true;
}
return false;
}
import android.content.pm.PackageManager;
public boolean isPackageExisted(String targetPackage){
PackageManager pm=getPackageManager();
try {
PackageInfo info=pm.getPackageInfo(targetPackage,PackageManager.GET_META_DATA);
} catch (PackageManager.NameNotFoundException e) {
return false;
}
return true;
}

Without using a try-catch block or iterating through a bunch of packages:
public static boolean isPackageInstalled(Context context, String packageName) {
final PackageManager packageManager = context.getPackageManager();
Intent intent = packageManager.getLaunchIntentForPackage(packageName);
if (intent == null) {
return false;
}
List<ResolveInfo> list = packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
return list.size() > 0;
}

Kotlin
fun isPackageExist(context: Context, target: String): Boolean {
return context.packageManager.getInstalledApplications(0).find { info -> info.packageName == target } != null
}
Edit: Extension Function
fun Context.isPackageExist(target: String): Boolean {
return packageManager.getInstalledApplications(0).find { info -> info.packageName == target } != null
}

Intent intent = new Intent("com.google.zxing.client.android.SCAN");
PackageManager packageManager = getPackageManager();
List<ResolveInfo> activities = packageManager.queryIntentActivities(intent, 0);
boolean isIntentSafe = activities.size() > 0;

We can check like this:
if(getPackageManager().hasSystemFeature("android.software.webview") == true && isPackageExisted("com.google.android.webview")) {
if (Constant.isNetworkConnected(Activity.this)) {
//Your Intent
} else {
Toast.makeText(getApplicationContext(), resources.getString(R.string.internet_error), Toast.LENGTH_SHORT).show();
}
} else
{
Constant.showDialog(Activity.this,"Please install the webview");
}
}
Make method for package check ! this credit goes to "Kavi" https://stackoverflow.com/a/30708227/6209105
public boolean isPackageExisted(String targetPackage) {
List<ApplicationInfo> packages;
PackageManager pm;
pm = getPackageManager();
packages = pm.getInstalledApplications(0);
for (ApplicationInfo packageInfo : packages) {
if(packageInfo.packageName.equals(targetPackage))
{
return true;
}
}
return false;
}

You should use PackageManager's function called getInstalledPackages() to get the list of all installed packages and the search for the one you are interested in. Note that package name is located in PackageInfo.packageName field.

Since some devices have reported that the "getInstalledPackages" can cause TransactionTooLargeException (check here, here and here), I think you should also have a fallback like I did below.
This issue was supposed to be fixed on Android 5.1 (read here), but some still reported about it.
public static List<String> getInstalledPackages(final Context context) {
List<String> result = new ArrayList<>();
final PackageManager pm = context.getPackageManager();
try {
List<PackageInfo> apps = pm.getInstalledPackages(0);
for (PackageInfo packageInfo : apps)
result.add(packageInfo.packageName);
return result;
} catch (Exception ignored) {
//we don't care why it didn't succeed. We'll do it using an alternative way instead
}
// use fallback:
BufferedReader bufferedReader = null;
try {
Process process = Runtime.getRuntime().exec("pm list packages");
bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line;
while ((line = bufferedReader.readLine()) != null) {
final String packageName = line.substring(line.indexOf(':') + 1);
result.add(packageName);
}
closeQuietly(bufferedReader);
process.waitFor();
} catch (Exception e) {
e.printStackTrace();
} finally {
closeQuietly(bufferedReader);
}
return result;
}
public static void closeQuietly(final Closeable closeable) {
if (closeable == null)
return;
try {
closeable.close();
} catch (final IOException e) {
}
}

If you just want to use adb:
adb shell "pm list packages"|cut -f 2 -d ":"
it will list all installed packages.

You can use pm.getPackageUid() instead of iterating over the pm.getInstalledApplications()
boolean isPackageInstalled;
PackageManager pm = getPackageManager();
int flags = 0;
try
{
pm.getPackageUid(packageName,flags);
isPackageInstalled = true;
}
catch (final PackageManager.NameNotFoundException nnfe)
{
isPackageInstalled = false;
}
return isPackageInstalled;

According to the Package visibility filtering changes in Android 11, you need to add this permission to your manifest to be able to list installed apps:
<uses-permission android:name="android.permission.QUERY_ALL_PACKAGES"/>
but Google doesn't recommend to use this way. You should use <queries> tag instead:
<manifest ...>
<queries>
<package android:name="com.app.package" />
...
</queries>
...
</manifest>
And in your code:
fun isAppInstalled(context: Context, packageId: String): Boolean {
return try {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
context.packageManager
.getApplicationInfo(packageId, PackageManager.ApplicationInfoFlags.of(0))
} else {
context.packageManager.getApplicationInfo(packageId, 0)
}
true
} catch (e: PackageManager.NameNotFoundException) {
false
}
}

get application name from package name

I want to get the application name from application package name. Somebody please show me how I can get this.
public class AppInstalledListener extends BroadcastReceiver{
#Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
String action = intent.getAction();
if(action.equals("android.intent.action.PACKAGE_ADDED")){
Logger.debug("DATA:"+intent.getData().toString());
}
if(action.equals("android.intent.action.PACKAGE_REMOVED")){
Logger.debug("DATA:"+intent.getData().toString());
}
if(action.equals("android.intent.action.PACKAGE_REPLACED")){
Logger.debug("DATA:"+intent.getData().toString());
}
}
}

You can use PackageManager class to obtain ApplicationInfo:
final PackageManager pm = getApplicationContext().getPackageManager();
ApplicationInfo ai;
try {
ai = pm.getApplicationInfo( this.getPackageName(), 0);
} catch (final NameNotFoundException e) {
ai = null;
}
final String applicationName = (String) (ai != null ? pm.getApplicationLabel(ai) : "(unknown)");
This would return the application name as defined in <application> tag of its manifest.

Try this
final String packageName = "my.application.package"
PackageManager packageManager= getApplicationContext().getPackageManager();
String appName = (String) packageManager.getApplicationLabel(packageManager.getApplicationInfo(packageName, PackageManager.GET_META_DATA));
and replace packageName with your package full name.
you can get packageName using mContext.getPackageName() where mContext = yourActivityName.this for Activity and getActivity() for fragment.

public static String getAppNameFromPkgName(Context context, String Packagename) {
try {
PackageManager packageManager = context.getPackageManager();
ApplicationInfo info = packageManager.getApplicationInfo(Packagename, PackageManager.GET_META_DATA);
String appName = (String) packageManager.getApplicationLabel(info);
return appName;
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
return "";
}
}

It seems that you are able to receive the event of new package added after that its a very simple concept to get the all relevant information about that package like one such information is the application name so here is the concept
-> your device package manager has all the information related to it so just make an object of that it will give you all the information related with the package name.
-> You should also remember that the intent gives you "package: real_package_name" so first you have to get real name first by spilling(I used) or by any other simple implementation of String
-> Here is the code hope you will get what you want I m also giving information about how you can get app name,app icon,app version,app version code etc.....
public class NewAppReciver extends BroadcastReceiver{
#Override
public void onReceive(Context context, Intent intent) {
if(intent.getAction().equals("android.intent.action.PACKAGE_ADDED")){
String[] a=intent.getData().toString().split(":");
String packageName=a[a.length-1];
List<PackageInfo> packageInfoList = context.getPackageManager().getInstalledPackages(0);
for (int i = 0; i < packageInfoList.size(); i++) {
PackageInfo packageInfo = packageInfoList.get(i);
if(packageInfo.packageName.equals(packageName)){
String appName = packageInfo.applicationInfo.loadLabel(context.getPackageManager()).toString();
String appVersion = packageInfo.versionName;
int appVerCode = packageInfo.versionCode;
Drawable app_icon = packageInfo.applicationInfo.loadIcon(context.getPackageManager());
}
}
}
}
}
But at the time of the application Uninstall you can only get the package name as on Un installation all other information gets removed by the system.

Try this below, it worked for me.
public static ArrayList<ApplicationInfo> getLaunchableInstalledApps(Context context){
final PackageManager pm = context.getPackageManager();
Intent intent = new Intent(Intent.ACTION_MAIN, null);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
ArrayList<ApplicationInfo> list = new ArrayList<>();
for (ResolveInfo resolveInfo:pm.queryIntentActivities(intent, PackageManager.GET_META_DATA)){
try {
ApplicationInfo app = context.getPackageManager().getApplicationInfo(resolveInfo.activityInfo.packageName, 0);
list.add(app);
} catch (Exception e) {
e.printStackTrace();
}
}
if (cacheAppsList.isEmpty()){
cacheAppsList.addAll(list);
}
return list;
}

PackageManager pm = getPackageManager();
IntentFilter filter = new IntentFilter();
filter.addAction("android.intent.action.MAIN");
filter.addCategory("android.intent.category.HOME");
filter.addCategory("android.intent.category.DEFAULT");
Context context = getApplicationContext();
ComponentName component = new ComponentName(context.getPackageName(), TestReplaceHomeAppActivity.class.getName());
ComponentName[] components = new ComponentName[] {new ComponentName("com.android.launcher", "com.android.launcher.Launcher"), component};
pm.clearPackagePreferredActivities("com.android.launcher");
pm.addPreferredActivity(filter, IntentFilter.MATCH_CATEGORY_EMPTY, components, component);