How to get the main activity in third party applications of system?
PackageManager pm= getPackageManager();
List<PackageInfo> packs = pm.getInstalledPackages(0);
for (PackageInfo pi : packs) {
HashMap<String, Object> map = new HashMap<String, Object>();
map.put("icon", pi.applicationInfo.loadIcon(pm));
map.put("appName", pi.applicationInfo.loadLabel(pm));
map.put("packageName", pi.packageName);
}
I know how to get the package name. But do not know how to obtain the name of main activity.
I use pi.activities[0].name. It still obtain null pointer.
Anyone’s idea is very appreciate.
use
pm.getLaunchIntentForPackage(pi.packageName);
This will give you launch intent, if you print it you will see the launcher intent along with the main activity.
If you want to show only activity that can be launched from your device launcher then you need to put a filter for Category Launcher.
You can use the following
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)");
Related
I'm developing a launcher app, I need to retrieve an Android OS default Phone app, Browser app and SMS apps', application Info (Application name, Package name, Launcher icon). Following code is used to get all launchable applications.
private static List<ApplicationInfo> getInstalledApps(Context context, PackageManager pm) {
List<ApplicationInfo> installedApps = context.getPackageManager().getInstalledApplications(0);
List<ApplicationInfo> laughableInstalledApps = new ArrayList<>();
for(int i =0; i<installedApps.size(); i++){
if(pm.getLaunchIntentForPackage(installedApps.get(i).packageName) != null){
laughableInstalledApps.add(installedApps.get(i));
}
}
return laughableInstalledApps;
}
After spending some time with the code, I found a way get what I wanted.
Default Dial App
Intent mainIntent = new Intent(Intent.ACTION_DIAL, null);
mainIntent.addCategory(Intent.CATEGORY_DEFAULT);
List<ResolveInfo> pkgAppsList = getPackageManager().queryIntentActivities(mainIntent, 0);
ActivityInfo info = pkgAppsList.get(0).activityInfo;
Default SMS App
String smsPkgName = Telephony.Sms.getDefaultSmsPackage(context);
ApplicationInfo info = getPackageManager().getApplicationInfo(smsPkgName, 0);
Default Browser App
Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://"));
ResolveInfo resolveInfo = getPackageManager().resolveActivity(browserIntent,
PackageManager.MATCH_DEFAULT_ONLY);
ActivityInfo info = resolveInfo.activityInfo;
Try with PackageManager#getPreferredActivities(java.util.List, java.util.List, java.lang.String), where the first parameter is a list of IntentFilter, which you would like to get default apps for. Then the answer is written in list passed as second parameter.
Here are some common intents for which you might try to find default apps.
I have a listview which show the all installed apps including some system apps but does not show gallery, contact, messages apps. Please tell me how can I get all these system apps. Here is my code
public static List getInstalledApplication(Context c)
{
// return c.getPackageManager().getInstalledApplications(PackageManager.GET_META_DATA);
List<ApplicationInfo> installedApps = new ArrayList<ApplicationInfo>();
PackageManager pm = c.getPackageManager();
List<ApplicationInfo> apps = pm.getInstalledApplications(0);
for(ApplicationInfo app : apps) {
//checks for flags; if flagged, check if updated system app
if((app.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) == 1) {
installedApps.add(app);
//it's a system app, not interested
} else if ((app.flags & ApplicationInfo.FLAG_SYSTEM) == 1) {
//Discard this one
//in this case, it should be a user-installed app
// installedApps.add(app);
} else {
installedApps.add(app);
}
}
return installedApps;
}
Tell me where I make mistake. Help me with some code.
The apps that you want to list (Gallery, Message, etc) are written in system partition and hence, (app.flags & ApplicationInfo.FLAG_SYSTEM) == 1) will be true.
FLAG_SYSTEM
if set, this application is installed in the device's system image.
Thats why the apps that you want to also list are getting skipped.
If you want to get apps which are listed in your launcher i.e apps with category <Launcher> get the list using following code
final PackageManager packageManager = getPackageManager();
Intent intent = new Intent(Intent.ACTION_MAIN, null);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
List<ResolveInfo> resInfos = packageManager.queryIntentActivities(intent, 0);
// using hashset so that there will be no duplicate packages,
// if no duplicate packages then there will be no duplicate apps
HashSet<ApplicationInfo> installedApps = new HashSet<ApplicationInfo>(0);
// getting package names and adding them to the hashset
for (ResolveInfo resolveInfo : resInfos) {
installedApps.add(resolveInfo.activityInfo.applicationInfo);
}
Since you want to show all the installed apps. You could get rid of the if-else block in your code and simply add all the apps and display them.
or make these change in you code
1) Fetch all the apps by this code.
List<ApplicationInfo> apps = getPackageManager().getInstalledPackages(0);
2) And separate system apps from user installed with the following code:
List<ApplicationInfo> apps = getPackageManager().getInstalledApplications(0);
for(ApplicationInfo app : apps) {
if((app.flags & (ApplicationInfo.FLAG_UPDATED_SYSTEM_APP | ApplicationInfo.FLAG_SYSTEM)) > 0) {
// It is a system app
} else {
// It is installed by the user
}
}
Try this different ways.
//First
Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
List pkgAppsList = context.getPackageManager().queryIntentActivities(mainIntent, 0);
// Second
PackageManager pm = getPackageManager();
List packages = pm.getInstalledApplications(PackageManager.GET_META_DATA);
for (ApplicationInfo packageInfo : packages)
{
Log.d(TAG, "Installed package :" + packageInfo.packageName);
Log.d(TAG, "Launch Activity :" + pm.getLaunchIntentForPackage(packageInfo.packageName));
}
// Third
private List getInstalledComponentList()
throws NameNotFoundException {
Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
List ril = getPackageManager().queryIntentActivities(mainIntent, 0);
List componentList = new ArrayList();
String name = null;
for (ResolveInfo ri : ril) {
if (ri.activityInfo != null) {
Resources res = getPackageManager().getResourcesForApplication(ri.activityInfo.applicationInfo);
if (ri.activityInfo.labelRes != 0) {
name = res.getString(ri.activityInfo.labelRes);
} else {
name = ri.activityInfo.applicationInfo.loadLabel(
getPackageManager()).toString();
}
componentList.add(name);
}
}
return componentList;
}
I want to open Android Wear Start Screen (the one with red G icon and text 'Speak Now') from my app. Is this possible?
thanks.
w
It's not possible to launch this exact screen (no API for that).
However you can easily recreate a similar screen yourself.
This code lists the activities available in the launcher:
final PackageManager packageManager = getPackageManager();
Intent intent = new Intent(Intent.ACTION_MAIN, null);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
List<ResolveInfo> resInfos = packageManager.queryIntentActivities(intent, 0);
//using hashset so that there will be no duplicate packages,
//if no duplicate packages then there will be no duplicate apps
HashSet<String> packageNames = new HashSet<String>(0);
List<ApplicationInfo> appInfos = new ArrayList<ApplicationInfo>(0);
//getting package names and adding them to the hashset
for(ResolveInfo resolveInfo : resInfos) {
packageNames.add(resolveInfo.activityInfo.packageName);
}
//now we have unique packages in the hashset, so get their application infos
//and add them to the arraylist
for(String packageName : packageNames) {
try {
appInfos.add(packageManager.getApplicationInfo(packageName, PackageManager.GET_META_DATA));
} catch (NameNotFoundException e) {
//Do Nothing
}
}
//to sort the list of apps by their names
Collections.sort(appInfos, new ApplicationInfo.DisplayNameComparator(packageManager));
Then show the elements in appInfos into a WearableListView.
Source:
https://stackoverflow.com/a/24351610/540990
I am trying to get the list of the installed browsers on my android. I found a code that provide me the list of activities that handle URL:
PackageManager packageManager = context.getPackageManager();
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse("http://www.google.com"));
List<ResolveInfo> list = packageManager.queryIntentActivities(intent,
PackageManager.MATCH_DEFAULT_ONLY);
for (ResolveInfo info : list) {
String name = info.name;
String pkgName = info.resolvePackageName;
}
I am able to get the activity names, but the package name is always null.
Is there a way to get the package name? or is there a better way to do that ?
Thanks,
RC
You will need to match it with packageInfo objects.
List<PackageInfo> temp = packageManager.getInstalledPackages(PackageManager.GET_META_DATA);
for(PackageInfo info: temp) {
String pkg = info.packageName
}
Try this:
for (ResolveInfo info : list) {
String name = info.activityInfo.name;
String pkgName = info.activityInfo.applicationInfo.packageName;
}
I'm looking for the best way to check if application is launchable.
There is my code :
PackageManager packageManager = context.getPackageManager();
List<PackageInfo> packs = packageManager.getInstalledPackages(0);
for (int i = 0; i < packs.size(); i++) {
PackageInfo p = packs.get(i);
if (packageManager.getLaunchIntentForPackage(p.applicationInfo.packageName) != null) {
// Get application info
}
}
This works, but when i do app profiling i noticed that packageManager.getLaunchIntentForPackage() method consumes a lot of execution time, so i'm looking for an alternative way to check if each application is launchable without getting the launch intent.
Any idea ?
Thank you !
I found solution for my own problem, i hope it will help someone :
PackageManager packageManager = context.getPackageManager();
Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
final List<ResolveInfo> apps = packageManager.queryIntentActivities(
mainIntent, 0);
Collections.sort(apps, new ResolveInfo.DisplayNameComparator(
packageManager));
for (ResolveInfo resolveInfo : apps) {
// Get application data here
}