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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...
Removing an activity from the history stack
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You can achieve this by setting the android:noHistory attribute to "true" in the relevant <activity> entries in your AndroidManifest.xml file. For example:
<activity
android:name=".AnyActivity"
android:noHistory="true" />
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Get the current language in device
How can we get the current language selected in the Android device?
25 Answers
25
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Convert String to Uri
How can I convert a String to a Uri in Java (Android)? i.e.:
6 Answers
6
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onNewIntent() lifecycle and registered listeners
...oint of view it's therefore needed to call onPause() before onNewIntent() Android did not NEED to design it this way. Your activity has already gone through its lifecycle through to resume(). No NEED for android to call onPause() then call onResume() again. If the app is resumed the os could simply...
getExtractedText on inactive InputConnection warning on android
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From the help documents
http://developer.android.com/reference/android/view/inputmethod/InputConnection.html
The InputConnection interface is the communication channel from an
InputMethod back to the application that is receiving its input. It is
used to per...
How do I get the currently displayed fragment?
I am playing with fragments in Android.
50 Answers
50
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When exactly are onSaveInstanceState() and onRestoreInstanceState() called?
...igure (from the official doc ) describes the well-known lifecycle of an Android activity:
5 Answers
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How to pass a variable from Activity to Fragment, and pass it back?
I am currently making an android app, and I want to pass a date between activity and fragment.
My activity has a button, which opens the fragment: DatePickerFragment.
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Converting Secret Key into a String and Vice Versa
...edKey, 0, decodedKey.length, "AES");
For Java 7 and before (including Android):
NOTE I: you can skip the Base64 encoding/decoding part and just store the byte[] in SQLite. That said, performing Base64 encoding/decoding is not an expensive operation and you can store strings in almost any DB w...