Develop Reference

How to add an option to share to Instagram Stories?

Background
In my Android App, users can share generated images to other apps. It's working nicely using the ACTION_SEND Intent.
Many users have asked why they can't share to Instagram stories directly.
Initially I thought Instagram doesn't support receiving Intents for stories (correct to some extent). I searched for it today, and according to this documentation, to share to Instagram Stories, a separate intent com.instagram.share.ADD_TO_STORY has to be used. I tried it, and it works fine.
The problem:
How do I keep both the options available?
I thought about it a lot, and came up with the following options:
1) Have two separate buttons. It will work, but it will look/feel bad.
2) Have my app accept ACTION_SEND intent, name it as Share to Instagram Story, and redirect the intent to the com.instagram.share.ADD_TO_STORY intent. In principle, make a proxy intent.
It will work, and look/feel great, but I don't know if its allowed (legal, etc) and can I disable the intent if the user doesn't have Instagram installed.
3) Add the 'com.instagram.share.ADD_TO_STORY' to the app chooser launched by ACTION_SEND. This would be ideal, but I don't know how to do it.

If you want to add multiple actions to Intent and create a chooser look at this example:
Intent viewIntent = new Intent(Intent.ACTION_VIEW);
Intent editIntent = new Intent(Intent.ACTION_EDIT);
viewIntent.setDataAndType(uri, type);
editIntent.setDataAndType(uri, type);
Intent chooserIntent = Intent.createChooser(editIntent, "Open in...");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Intent[] { viewIntent });
startActivity(chooserIntent);
UPDATE: Here is good solution to your answer. How to make an intent with multiple actions

I tried the same approach as on Facebook's official documentation then tested on Huawai P9 Lite, Huawai P20 Lite and on Samsung S8 - it only worked on Samsung S8 for not known reason (to me). I gave up on it since, obviously, it's not working on most of the phones.

// Define image asset URI
Uri stickerAssetUri = Uri.parse("your-image-asset-uri-goes-here");
String sourceApplication = "com.my.app";
// Instantiate implicit intent with ADD_TO_STORY action,
// sticker asset, and background colors
Intent intent = new Intent("com.instagram.share.ADD_TO_STORY");
intent.putExtra("source_application", sourceApplication);
intent.setType(MEDIA_TYPE_JPEG);
intent.putExtra("interactive_asset_uri", stickerAssetUri);
intent.putExtra("top_background_color", "#33FF33");
intent.putExtra("bottom_background_color", "#FF00FF");
// Instantiate activity and verify it will resolve implicit intent
Activity activity = getActivity();
activity.grantUriPermission("com.instagram.android", stickerAssetUri, Intent.FLAG_GRANT_READ_URI_PERMISSION);
if (activity.getPackageManager().resolveActivity(intent, 0) != null) { activity.startActivityForResult(intent, 0);}

How to use or create android default fileopenpicker?

I have a list of different types of files such as pdf, audio(mp3), video etc. I want to open those file using onClick event of the list items with supported viewer or applications. For example if the selected file will be an video file then, a dialog will be appeared having a list of installed as well as the default video players as below:
Can anyone help or guide me how to do that?

you should implement a chooser, like the example below,
Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
shareIntent.setType("text/plain");//TYPE OF THE CONTENTS,this is for text
shareIntent.putExtra(Intent.EXTRA_TEXT, noteTitle);//PUT THE EXTRA
//THIS IS THE LOGIC FOR THE CHOOSER
Intent chooser = Intent.createChooser(shareIntent,getString(R.string.share_dialog_title));
PackageManager manager = getPackageManager();
List<ResolveInfo> activities = manager.queryIntentActivities(chooser, 0);
if(activities.size() > 0) {
startActivity(chooser);
} else {
Toast.makeText(NoteListActivity.this, R.string.no_activities_for_action, Toast.LENGTH_LONG).show();
}
}
EDIT also check this question, and combine my answer with the answer of this question nad you will get the result Launching an intent for file and MIME type?

How to show 'Clear Defaults' programmatically?

Now i am working on a Home Launcher application.I want to clear defaults of default home launcher(eg: Samsung Home). ie.I want to show Settings-> Applications->Manage Application->Samsung Home->clear defaults programmatically.
How to show this through code?
Thanks in Advance

NOTE: Since this question is limited to accessing the Manage Application Settings options, my answer covers just that. You will have to figure out a way of getting the actual Package Name.
Also, if the idea is to also Clear the Defaults automatically via code, then that, to the best of my knowledge, cannot be done. Someone can correct me if I am wrong on this.
That being said, this piece of code will open the specific application's Manage Application screen from your app (the package name must be supplied).
Intent showSettings = new Intent();
showSettings.setAction(android.provider.Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
Uri uriAppSettings = Uri.fromParts("package", "THE_APP_PACKAGE_NAME", null);
showSettings.setData(uriAppSettings);
startActivity(showSettings);
For example, if the package name of the Google Maps application is com.google.android.apps.maps, the replace THE_APP_PACKAGE_NAME with it and the code will open the Manage Application screen for the Google Maps application.
UPDATE:
The PackageManager has a method, clearPackagePreferredActivities used to clear the default via code. However, that doesn't seem to work in newer Android versions: https://stackoverflow.com/a/10246711/450534
Other posts worth reading:
https://stackoverflow.com/a/7750187/450534
https://groups.google.com/forum/?fromgroups=#!topic/android-developers/Rzv8VU-EUAw

Just for complete the picture, for getting "THE_APP_PACKAGE_NAME" youc can use something like that :
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
ResolveInfo resolveInfo = getPackageManager().resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY);
String packageName = resolveInfo.activityInfo.packageName;

Setting default browser for activity programmatically

I'm developing an android app and among other functionality I need to open some urls in external web browser. Can I programmatically set a default application for that, so the user won't be able to choose from the list of available browsers? I mean, I want to set default browser only for my app but not for the whole operating system.

Yes, for this you can force your application to always open native android browser only. For this you have to identify the launching Activity of Browser application, something like this:
Intent intent = new Intent();
intent.setComponent(new ComponentName("com.google.android.browser","com.google.android.browser.BrowserActivity"));
intent.setAction("android.intent.action.VIEW");
intent.addCategory("android.intent.category.BROWSABLE");
Uri uri = Uri.parse(url);
intent.setData(uri);
try
{
startActivity(intent);
}
catch (Exception e)
{
e.printStackTrace();
}

You can use .setPackage for the intent: http://developer.android.com/reference/android/content/Intent.html#setPackage(java.lang.String) . Call it with the browser's package name (defined in its manifest, package attribute).
I'm using something similar for firing up the Google+ application for sharing a string:
Intent shareIntent = ShareCompat.IntentBuilder.from(getActivity())
.setText("Dummy string to share")
.setType("text/plain")
.getIntent()
.setPackage("com.google.android.apps.plus");
startActivity(shareIntent);
In my example, "com.google.android.apps.plus" is the package name for the Google+ application.

Sharedpreference for Browser class is "MODE_private" , so we can't access the home_page changing steps directly programatically,
iff we want to do, we should do through Browser.java opensource code and we should get some idea from there itself.

Android Intent for Twitter application

Is it possible to show a list of applications (with intent.createChooser) that only show me my twitter apps on my phone (so htc peep (htc hero) or twitdroid). I have tried it with intent.settype("application/twitter") but it doesnt find any apps for twitter and only shows my mail apps.
Thank you,
Wouter

I'm posting this because I haven't seen a solution yet that does exactly what I want.
This primarily launches the official Twitter app, or if that is not installed, either brings up a "Complete action using..." dialog (like this) or directly launches a web browser.
For list of different parameters in the twitter.com URL, see the Tweet Button docs.
Remember to URL encode the parameter values. (This code is specifically for tweeting a URL; if you don't want that, just leave out the url param.)
// Create intent using ACTION_VIEW and a normal Twitter url:
String tweetUrl = String.format("https://twitter.com/intent/tweet?text=%s&url=%s",
urlEncode("Tweet text"),
urlEncode("https://www.google.fi/"));
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(tweetUrl));
// Narrow down to official Twitter app, if available:
List<ResolveInfo> matches = getPackageManager().queryIntentActivities(intent, 0);
for (ResolveInfo info : matches) {
if (info.activityInfo.packageName.toLowerCase().startsWith("com.twitter")) {
intent.setPackage(info.activityInfo.packageName);
}
}
startActivity(intent);
(URL encoding is cleaner if you have a little utility like this somewhere, e.g. "StringUtils".)
public static String urlEncode(String s) {
try {
return URLEncoder.encode(s, "UTF-8");
}
catch (UnsupportedEncodingException e) {
Log.wtf(TAG, "UTF-8 should always be supported", e);
throw new RuntimeException("URLEncoder.encode() failed for " + s);
}
}
For example, on my Nexus 7 device, this directly opens the official Twitter app:
If official Twitter app is not installed and user either selects Chrome or it opens automatically (as the only app which can handle the intent):

The solutions posted before, allow you to post directly on your first twitter app. To show a list of twitters app (if there are more then one), you can custom your Intent.createChooser to show only the Itents you want.
The trick is add EXTRA_INITIAL_INTENTS to the default list, generated from the createChoose, and remove the others Intents from the list.
Look at this sample where I create a chooser that shows only my e-mails apps. In my case appears three mails: Gmail, YahooMail and the default Mail.
private void share(String nameApp, String imagePath) {
List<Intent> targetedShareIntents = new ArrayList<Intent>();
Intent share = new Intent(android.content.Intent.ACTION_SEND);
share.setType("image/jpeg");
List<ResolveInfo> resInfo = getPackageManager().queryIntentActivities(share, 0);
if (!resInfo.isEmpty()){
for (ResolveInfo info : resInfo) {
Intent targetedShare = new Intent(android.content.Intent.ACTION_SEND);
targetedShare.setType("image/jpeg"); // put here your mime type
if (info.activityInfo.packageName.toLowerCase().contains(nameApp) ||
info.activityInfo.name.toLowerCase().contains(nameApp)) {
targetedShare.putExtra(Intent.EXTRA_TEXT, "My body of post/email");
targetedShare.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(new File(imagePath)) );
targetedShare.setPackage(info.activityInfo.packageName);
targetedShareIntents.add(targetedShare);
}
}
Intent chooserIntent = Intent.createChooser(targetedShareIntents.remove(0), "Select app to share");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, targetedShareIntents.toArray(new Parcelable[]{}));
startActivity(chooserIntent);
}
}
You can run like that: share("twi", "/sdcard/dcim/Camera/photo.jpg");
This was based on post: Custom filtering of intent chooser based on installed Android package name

This question is a bit older, but since I have just come across a similar problem, it may also still be of interest to others. First, as mentioned by Peter, create your intent:
Intent tweetIntent = new Intent(Intent.ACTION_SEND);
tweetIntent.putExtra(Intent.EXTRA_TEXT, "Test; please ignore");
tweetIntent.setType("application/twitter");
"application/twitter" is in fact a known content type, see here. Now, when you try to start an activity with this intent, it will show all sorts of apps that are not really Twitter clients, but want a piece of the action. As already mentioned in a couple of the "why do you even want to do that?" sort of answers, some users may find that useful. On the other hand, if I have a button in my app that says "Tweet this!", the user would very much expect this to bring up a Twitter client.
Which means that instead of just launching an activity, we need to filter out the ones that are appropriate:
PackageManager pm = getPackageManager();
List<ResolveInfo> lract
= pm.queryIntentActivities(tweetIntent,
PackageManager.MATCH_DEFAULT_ONLY);
boolean resolved = false;
for(ResolveInfo ri: lract)
{
if(ri.activityInfo.name.endsWith(".SendTweet"))
{
tweetIntent.setClassName(ri.activityInfo.packageName,
ri.activityInfo.name);
resolved = true;
break;
}
}
You would need to experiment a bit with the different providers, but if the name ends in ".SendTweet" you are pretty safe (this is the activity name in Twidroyd). You can also check your debugger for package names you want to use and adjust the string comparison accordingly (i.e. Twidroyd uses "com.twidroid.*").
In this simple example we just pick the first matching activity that we find. This brings up the Twitter client directly, without the user having to make any choices. If there are no proper Twitter clients, we revert to the standard activity chooser:
startActivity(resolved ? tweetIntent :
Intent.createChooser(tweetIntent, "Choose one"));
You could expand the code and take into account the case that there is more than one Twitter client, when you may want to create your own chooser dialog from all the activity names you find.

It is entirely possible your users will only ever, now and forever, only want to post to Twitter.
I would think that it is more likely that your users want to send information to people, and Twitter is one possibility. But, they might also want to send a text message, or an email, etc.
In that case, use ACTION_SEND, as described here. Twidroid, notably, supports ACTION_SEND, so it will appear in the list of available delivery mechanisms.

These answers are all overly complex.
If you just do a normal url Intent that does to Twitter.com, you'll get this screen:
which gives you the option of going to the website if you have no Twitter apps installed.
String url = "https://twitter.com/intent/tweet?source=webclient&text=TWEET+THIS!";
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(url));
startActivity(i);

Either
You start an activity with an Intent with action Intent.ACTION_SEND and the text/plain MIME type. You'll have all applications that support sending text. That should be any twitter client, as well as Gmail, dropbox, etc.
Or, you try to look up for the specific action of every client you are aware of, like "com.twitter.android.PostActivity" for the official client. That will point to this client, and that is unlikely to be a complete list.
Or, you start with the second point, and fall back on the first...

Nope. The intent type is something like image/png or application/pdf, i.e. a file type, and with createChooser you're basically asking which apps can open this file type.
Now, there's no such thing as an application/twitter file that can be opened, so that won't work. I'm not aware of any other way you can achieve what you want either.

From http://twidroid.com/plugins/
Twidroid’s ACTION_SEND intent
Intent sendIntent = new Intent(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, "This is a sample message via Public Intent");
sendIntent.setType("application/twitter");
startActivity(Intent.createChooser(sendIntent, null));

I used "billynomates" answer and was able to use hashtags by using the "URLEncoder.encode(, "UTF-8")" function. The hash tags showed up just fine.
String originalMessage = "some message #MESSAGE";
String originalMessageEscaped = null;
try {
originalMessageEscaped = String.format(
"https://twitter.com/intent/tweet?source=webclient&text=%s",
URLEncoder.encode(originalMessage, "UTF-8"));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
if(originalMessageEscaped != null) {
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(originalMessageEscaped));
startActivity(i);
}
else {
// Some Error
}