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Fragment MyFragment not attached to Activity
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developer.android.com/reference/android/app/… ...there's also isDetached(), that was added on API level 13
– Lucas Jota
Mar 21 '14 at 12:42
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How to prevent going back to the previous activity?
... Thanks you, I tried to find this for about three days. Because of android:noHistory="true" flag for Activity don't work as expected (noHistory flag recreates activity after minimization) and finish() sometimes don't worked for me, but why I still don't understood.
– De...
Sending files using POST with HttpURLConnection
Since the Android developers recommend to use the HttpURLConnection class, I was wondering if anyone can provide me with a good example on how to send a bitmap "file" (actually an in-memory stream) via POST to an Apache HTTP server. I'm not interested in cookies or authentication or anything com...
How to mark-up phone numbers?
... To add to this, the behaviour is the same for Google Chrome on Android 4.2.2 (Nexus 4). Having the Android version of Skype running in the background doesn't even make callto: links work. In short, you can't really use callto: links if you're wanting to target mobile at the minute.
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Using getResources() in non-activity class
... It's normally not a good idea to pass around Context objects in Android. It can lead to memory leaks.
– Jason Crosby
Aug 28 '13 at 18:35
31
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String Resource new line /n not possible?
...want to mention something for people like me reaching this page because of Android Studio. In AS when you extract a string using the IDE's tool, it automatically strips newline characters. You can just manually add them back in and it'll work fine. Not sure why it does this.
– ...
View not attached to window manager crash
... while the AsyncTask is executing and the ProgressDialog is showing.
The Android OS will destroy an activity as soon as it is hidden. When onPostExecute is called the Activity will be in "finishing" state and the ProgressDialog will be not attached to Activity.
How to fix it:
Check for the acti...
URLEncoder not able to translate space character
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dependencies {
compile 'com.google.guava:guava:23.0'
// or, for Android:
compile 'com.google.guava:guava:23.0-android'
}
You can use UrlEscapers:
String encodedString = UrlEscapers.urlFragmentEscaper().escape(inputString);
Don't use String.replace, this would only encode the spa...
When should one use RxJava Observable and when simple Callback on Android?
...e getUserPhoto example:
RxJava:
api.getUserPhoto(photoId)
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Action1<Photo>() {
@Override
public void call(Photo photo) {
// do some stuff with your photo
}
});
Callback:...
How to get a Color from hexadecimal Color String
...olor class method:
public static int parseColor (String colorString)
From Android documentation:
Supported formats are: #RRGGBB #AARRGGBB 'red', 'blue', 'green', 'black', 'white', 'gray', 'cyan', 'magenta', 'yellow', 'lightgray', 'darkgray'
AndroidX: String.toColorInt()
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