Develop Reference

Android code to dial or calll a string containing alphabets *123*abc# instead of numbers (*123#)?

I’m unable to dial or call a string containing alphabets in android.
For Example:
I want to dial a string *123*abcd#.
Intent callIntent = new Intent(Intent.ACTION_CALL);
callIntent.setData(Uri.parse("tel:"+"*123*abcd#")); //This string is not getting dialed
try
{
startActivity(callIntent);
}
catch (android.content.ActivityNotFoundException ex)
{
Toast.makeText(getApplicationContext(),"yourActivity is not founded",Toast.LENGTH_SHORT).show();
}
String *123*abcd# is not getting dialed or called. Please help to solve the same.

String s = "*123*abcd#";
if ((s.startsWith("*")) && (s.endsWith("#"))) {
callstring = s.substring(0, s.length() - 1);
callstring = callstring + Uri.encode("#");
}
Intent i = new Intent(android.content.Intent.ACTION_CALL, Uri.parse("tel:" + callstring));
startActivity(i);
your need to encode the # before using it above code will do the trick.

To use Intent.ACTION_CALL you need to add Permission
<uses-permission android:name="android.permission.CALL_PHONE"/> and since its a Dangerous permission you need to handle it Runtime for Android 6 and above.
You can rather use Intent.ACTION_DIAL which doesnt require any permission and will open the Phone app with the given number typed already, the user has to initiate the call.
Here is how to achieve this.
Intent intent = new Intent(Intent.ACTION_DIAL);
intent.setData(Uri.parse("tel:*123*abcd#"));
startActivity(intent);

Type a phone number intent

How can I make my app type a given phone number without calling? I use:
Intent callIntent = new Intent(Intent.ACTION_CALL);
callIntent.setData(Uri.parse("tel:" + phone));
startActivity(callIntent);
But that statement makes a call too.

Replace Intent.ACTION_CALL with Intent.ACTION_DIAL

You're using ACTION_CALL. You need to use ACTION_DIAL instead.
Intent callIntent = new Intent(Intent.ACTION_DIAL);
callIntent.setData(Uri.parse("tel:" + phone));
startActivity(callIntent);

Android SMS intent stuck with the same body and same recepient

So my android application detects when location changes and then it notifies the user and makes him take action either call a number or send SMS.
The SMS is sent to a saved number and its body is "I'm at " + fullAddress
private NotificationCompat.Builder buildNormal(CharSequence pTitle,String fullAddress) {
NotificationCompat.Builder builder = new NotificationCompat.Builder(
this);
Intent in = new Intent(this,MainActivity.class);
PendingIntent pMainIntent = PendingIntent.getActivity(this, 0,
in, 0);
if(getSavedDataString("gNumber")!=null)
{
String url = getSavedDataString("gNumber");
Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse(url));
PendingIntent pIntent = PendingIntent.getActivity(this, 0, intent, 0);
//Intent smsIntent = new Intent(Intent.ACTION_SENDTO,Uri.parse("smsto:"
//+ Uri.encode(getSavedDataString("gNumber").substring(4))));
//intent.setData());
//startActivity(intent);
Intent smsIntent = new Intent(Intent.ACTION_VIEW);
//smsIntent.setType("vnd.android-dir/mms-sms");
smsIntent.putExtra("address", getSavedDataString("gNumber").substring(4));
smsIntent.putExtra("sms_body","I'm at " + fullAddress);
smsIntent.setData(Uri.parse("smsto:"
+ Uri.encode(getSavedDataString("gNumber").substring(4))));
PendingIntent psmsIntent = PendingIntent.getActivity(this, 0,
smsIntent, 0);
builder.addAction(android.R.drawable.ic_menu_call, "Call", pIntent);
builder.addAction(android.R.drawable.sym_action_email, "Send SMS", psmsIntent);
}
else
{
builder.addAction(0, "Choose Guardian", pMainIntent);
}
builder.setAutoCancel(true).setDefaults(Notification.DEFAULT_ALL);
// set the shown date
builder.setWhen(System.currentTimeMillis());
// the title of the notification
builder.setContentTitle(pTitle);
// set the text for pre API 16 devices
builder.setContentText(pTitle);
// set the action for clicking the notification
builder.setContentIntent(pMainIntent);
// set the notifications icon
builder.setSmallIcon(R.drawable.ic_home);
//builder.setSound(android.)
// set the small ticker text which runs in the tray for a few seconds
builder.setTicker("Location Change Alert");
// set the priority for API 16 devices
//builder.setVibrate(pattern)
builder.setPriority(Notification.PRIORITY_DEFAULT);
return builder;
}
it shows here that the notification that shows to the user contains 2 actions to call or to send message and it sends it to the presaved number gNumber
The problem is after i press the action to send sms and then discard that message without sending it also deleting it from draft and all that.
and then the app detects another location change so it sends a different notification with different fullAddress the intent is still stuck at the same text body!!
I also tried to change the recipient and it gets stuck on the old recipient too. I have to either restart the device or send the message I once discarded.
I also tried to change from ACTION_VIEW to ACTION_SEND or ACTION_SENDTO but all in vain.
I want to know if there's a solution to this intent getting stuck on the same body and recipient other than changing this intent totally and using SMSManager
Help please.

When your app requests a PendingIntent, the system keeps a token on behalf of your app to perform an action as though your app is actually doing it. It is done this way so that, even if your app is killed, whatever process receives the PendingIntent can still follow through with it.
When these tokens are created, certain info is recorded, e.g. the operation, the the action, etc. If your app were to request another PendingIntent with the same info, the same token will be returned. Now, the info used to determine if they are the same or different does not include the extras that the Intent itself carries. So when your app requests the same SMS operation with only different Intent extras, you're going to get the same token with the original extras over and over again, unless you pass a flag to indicate differently.
As for the difference between the flags: FLAG_CANCEL_CURRENT "ensures that only entities given the new data will be able to launch it. If this assurance is not an issue, consider FLAG_UPDATE_CURRENT." In your case, I don't think this is an issue, so FLAG_UPDATE_CURRENT should be sufficient. If it is a concern, use FLAG_CANCEL_CURRENT.
The quoted is directly from the docs here.

launching realcalc from a button array

i'm trying to launch realcalc from within my app from a button but everytime i try it doesnt do anything.
Code for the button
case 15: {
Intent intent2 = new Intent("uk.co.quarticsoftware.REALCALC");
double x = 0;// Set initial value (double).
if (!texts[n].getText().toString().equals("")
|| !texts[n].getText().toString().equals(null))
x = Double.parseDouble(texts[n].getText().toString());
intent2.putExtra("X", x);
// Launch calculator.
startActivityForResult(intent2, 0);
break;
}// open Calculatorcase 7:
Since it is an array of buttons i use a switch case as some buttons have different functions. The switch case is contained within a single onclick listener block. All the buttons work fine but i cant seem to launch an intent. If i try this from a button on the first page of my app it seems to work. I did code the exception too in the case there is no google play or realcalc on the device but i did not see the app going through the exceptions.
Thanks

Intent i = new Intent();
i.setClassName("com.android.calculator2",
"com.android.calculator2.Calculator");
startActivity(i);
Taken from here link
and this one work with me :
Intent intent = new Intent();
intent.setAction(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
intent.setComponent(new ComponentName(
CALCULATOR_PACKAGE,
CALCULATOR_CLASS));
Calculator.this.startActivity(intent);

when i invoke gmail to send some advice the bluetooth come out, too

this is my code to invoke gmail.
private void sendMail() {
// Device model
String PhoneModel = android.os.Build.MODEL;
// Android version
String AndroidVersion = android.os.Build.VERSION.RELEASE;
final Intent emailIntent = new Intent(
android.content.Intent.ACTION_SEND);
emailIntent.setType("plain/text");
emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL,
new String[] { "****#gmail.com"});
emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT,
"'some feedbace...");
emailIntent.putExtra(android.content.Intent.EXTRA_TEXT, "—— phoneModel："
+ PhoneModel + ";ROM:" + AndroidVersion);
startActivity(Intent.createChooser(emailIntent, "Sending mail..."));
}
when i click the menu to invoke the gmail to send feedback,the bluetooth come out too,with the gmail,and waiting for me to select one.but i just want to invoke the gmail app.what's wrong with my code .anybody help please!

You can try this:
emailIntent.setType("application/octet-stream");
Or alternatively you can use PackageManager to build a more limited set of Intents, and show your own dialog for the user to select their email app.
but actually you are swimming against the tide of Android with what you're doing. Android is designed to allow for a message to be "Sent" and to show all apps that accept that intent, so be careful you don't remove options the user may actually want.

You can try using android.content.Intent.ACTION_SENDTO instead of ACTION_SEND. If you have multiple email clients installed it will still prompt you to choose one though.
Have a look at this question for more info.
If you absolutely have to use Gmail and not have android prompt the user you can try what is suggested in this answer (Note: I haven't tried this):
If you specifically want GMail, you have to be a bit cleverer. (Note
that the correct MIME type is actually "text/plain", not "plain/text".
Do to an implementation oddity, GMail seems to be the only activity
which responds to the latter, but this isn't a behavior I would count
on.)

private void sendMail() {
String body = "\n 机型：" + android.os.Build.MODEL + ";ROM:"
+ android.os.Build.VERSION.RELEASE;
Uri mailUri = Uri.parse("mailto:byirain#gmail.com");
Intent emailIntent = new Intent(Intent.ACTION_SENDTO, mailUri);
emailIntent.putExtra(Intent.EXTRA_SUBJECT, "'易学堂'问题反馈与建议");
emailIntent.putExtra(Intent.EXTRA_TEXT, body);
startActivity(emailIntent);
}
I finally finished it, though the uri, like before