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Simplest way to detect a mobile device in PHP
...Code:
<?php
$useragent=$_SERVER['HTTP_USER_AGENT'];
if(preg_match('/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|...
Programmatically go back to the previous fragment in the backstack
...opBackStack() methods (there are several to choose from)
http://developer.android.com/reference/android/app/FragmentManager.html#popBackStack()
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Android: upgrading DB version and adding new table
...n sql file for each update as described in the link https://riggaroo.co.za/android-sqlite-database-use-onupgrade-correctly/
from_1_to_2.sql
ALTER TABLE books ADD COLUMN book_rating INTEGER;
from_2_to_3.sql
ALTER TABLE books RENAME TO book_information;
from_3_to_4.sql
ALTER TABLE book_informa...
Can't find @Nullable inside javax.annotation.*
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In case someone has this while trying to compile an Android project, there is an alternative Nullable implementation in android.support.annotation.Nullable. So take care which package you've referenced in your imports.
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Difference between an API and SDK
... I agree with this definition, but at the same time wonder why iOS and Android use the term API for e.g. the Bluetooth library (iOS Core Bluetooth API, Android Bluetooth APIs)?
– tamberg
Oct 11 '19 at 9:26
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Java code for getting current time [duplicate]
...ater. Official successor to Joda-Time.Back-ported to Java 6 & 7 and to Android.
Joda-TimeThird-party library, open-source, free-of-cost.
java.time
ZonedDateTime zdt = ZonedDateTime.now();
If needed for old code, convert to java.util.Date. Go through at Instant which is a moment on the timel...
I get exception when using Thread.sleep(x) or wait()
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When using Android (the only time when I use Java) I would recommend using a handler instead putting the thread to sleep.
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public ...
Determine if the device is a smartphone or tablet? [duplicate]
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This subject is discussed in the Android Training:
Use the Smallest-width Qualifier
If you read the entire topic, they explain how to set a boolean value in a specific value file (as res/values-sw600dp/attrs.xml):
<resources>
<bool name="isTa...
“/usr/bin/ld: cannot find -lz”
I am trying to compile Android source code under Ubuntu 10.04. I get an error saying,
11 Answers
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Android, How can I Convert String to Date?
I store current time in database each time application starts by user.
6 Answers
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