Develop Reference

Is there a way to open a browser tab automatically in Android?

I'm looking for a way to open a browser at a specific link automatically at a give time / daily.
Maybe there is some kind of script, add-on for bowser but I still haven't find one.
Does anyone know a good solution?

I suggest you to use an AalarmManager here is an example
And then here is the code you should execute
String urlString = "your_url";
Intent intent = new
Intent(Intent.ACTION_VIEW,Uri.parse(urlString));
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setPackage("com.android.chrome");
try {
context.startActivity(intent);
}
catch (ActivityNotFoundException ex) {
context.startActivity(intent);
}

Seems to me this is a combination of three things, setting the alarm, firing the intent and making sure the intent has the data to open a specific uri in the browser.
start activity from an alarm
open a uri

Can I send Intent to another app

I m creating an app which opens another app in the background and my first app will be sending some string as a data to another app, so can I send Intents to another app's like we usually send intents to other classes containing data?
If we can then how can I send it?

Yes , you can send the intent to any app you like but its upto the receiving application to handle it.
Few apps may crash receiving it.
The way
Make an intent
Intent i=new Intent(yourContext,Activity_to_which_you_to_send.class);
Put some data-if you want to
i.putExtraString("key","value");
or put using a bundle
Bundle b=new Bundle();
b.putString(key,boolean_value);
b.putBoolean(key,boolean_value)
Starting the activity
startActivity(i);
Set the package of the app
i.setPackage("com.whatsapp");
Example
if you want to find out the main Activity of an app
go to command line
type adb shell pm -lf
pick any one and try it by passing as a second argument to the intent constructor defined above and then call startActivity method.
hope it helps you.

Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setType("text/plain");
intent.putExtra(name,yourString);
try{
startActivity(intent);
} catch (Exception ActivityNotFoundException){
ActivityNotFoundException.printStackTrace();
}
Use this code to send an intent to another app and specify the name value and string in putExtra function.

Yes you can send Intent to another app like we send to other classes with passing data as a string so you can see it HERE

Yes. "App" is not so well defined on Android, it's a loose term. Intents are used to start an Activity, among other things.

Android Intent To Open Application Not Working

I am trying to open the Google Voice Search Application
Intent i;
PackageManager manager = getPackageManager();
try {
i = manager.getLaunchIntentForPackage("com.google.android.voicesearch");
if (i == null)
throw new PackageManager.NameNotFoundException();
i.addCategory(Intent.CATEGORY_LAUNCHER);
startActivity(i);
} catch (PackageManager.NameNotFoundException e) {
}
This does not launch the voice search application,
however if I use com.google.android.apps.maps as the package name then the Google Maps app is opened.
I don't understand why Voice Search is not opening, even though the package name is correct.
Solution
Intent intent = new Intent(RecognizerIntent.ACTION_WEB_SEARCH);
startActivity(intent);
Please see
Launch Preinstalled App from activity (Google Voice Search) Android for more information on the solution.
Thank you.

As you can read here, getLaunchIntentForPackage (String packageName)
Return a "good" intent to launch a front-door activity in a package [...]
The current implementation will look first
for a main activity in the category CATEGORY_INFO, next for a main
activity in the category CATEGORY_LAUNCHER, or return null if neither
are found.
so, in the intent, the category will already be set. If you manually change it, probably you are breaking the intent, since the category could not be the correct one that the manager found.
so, just remove the line
i.addCategory(Intent.CATEGORY_LAUNCHER);

Can i integrate S translator in my app

In my app i want to use galaxy s4 S-translator.So is it possible to use it? And normally can i call another app from my app.I am very new to android.So I don't know it is possible or not.So if possible plz tell me.I think by using intent with giving proper action we can do it.
Intent i;
PackageManager manager = getPackageManager();
try {
i = manager.getLaunchIntentForPackage("app package name");
if (i == null)
throw new PackageManager.NameNotFoundException();
i.addCategory(Intent.CATEGORY_LAUNCHER);
startActivity(i);
} catch (PackageManager.NameNotFoundException e) {
}
thanx

Yes, by using intents.
For example:
final Intent intent = new Intent();
intent.setAction(Intent.ACTION_MAIN);
intent.setClassName("com.example.theotherapp", "com.example.theotherapp.MainActivity");
startActivity(intent);
This is called an explicit intent, because you're explicitly stating which component should respond to it. You can also use implicit intents, in which you specify what kind of component you expect and the OS and/or the user selects the most appropriate one.
If you can choose, implicit intents are preferred.
This might Help You.

Error-proof way of starting SMS intent in Android

In my Android application, I use the following code to start the messaging app and fill in a default text for a text message:
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse("sms:"+USERS_PHONE_NUMBER));
intent.putExtra("sms_body", "DUMMY TEXT");
startActivity(intent);
This works in most cases. But unfortunately, on some devices I get the following error message:
android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW dat=sms:+XXXXXXXXXX (has extras) }
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1510)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1384)
at android.app.Activity.startActivityForResult(Activity.java:3131)
at android.app.Activity.startActivity(Activity.java:3237)
Obviously, the intent that I created cannot be handled.
Is there any mistake in my SMS intent code?
How can I prevent the application from crashing if the intent cannot be handled?
Should I use PackageManager.queryIntentActivities() or is there another way of solving this problem?
Thanks in advance!

I haven't tried this intent specifically, but the simplest way will probably be to add try and catch block
try {
startActivity(intent);
} catch (ActivityNotFoundException e) {
// Display some sort of error message here.
}
Since you can't count on the specific Android device to have the Messaging app (some tablets for example don't have telephony services), you have to be ready.
It is a good practice in general when you're starting external activities, to avoid crashes in your app.

Here is the code that will open the SMS activity pre-populated with the phone number to
which the SMS has to be sent. This works fine on emulator as well as the device.
Intent smsIntent = new Intent(Intent.ACTION_SENDTO);
smsIntent.addCategory(Intent.CATEGORY_DEFAULT);
smsIntent.setType("vnd.android-dir/mms-sms");
smsIntent.setData(Uri.parse("sms:" + phoneNumber);

Here is a method I use to safely open activities on Android, and give the user some feedback if the activity is not found.
public static void safeOpenActivityIntent(Context context, Intent activityIntent) {
// Verify that the intent will resolve to an activity
if (activityIntent.resolveActivity(context.getPackageManager()) != null) {
context.startActivity(activityIntent);
} else {
Toast.makeText(context, "app not available", Toast.LENGTH_LONG).show();
}
}
(I think I got it from one of the Google Developers videos on youtube, but now I can't find the video...)