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What is the purpose of Looper and how to use it?
...application, and you can learn more about it in "Concurrent Programming in Java" by Doug Lea(Especially, chapter 4.1.4 "Worker Threads" would be helpful). Also, you can imagine this kind of mechanism is not unique in Android framework, but all GUI framework may need somewhat similar to this. You can...
Difference between “managed” and “unmanaged”
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@JacksonTale Java is not in the context of .NET thus the concept of it being managed or unmanaged isn't applicable. See stackoverflow.com/questions/1326071/… for an explanation of how Java compiles.
– Evan Frisch
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log4j vs logback [closed]
...ogging, slf4j or even the Log4j 2.0 API) and implementations (Log4j 1 + 2, java.util.logging, TinyLog, Logback).
Basically you should replace your selfmade wrapper with slf4j IF and only IF you are not happy with it for some reason. While Apache Commons Logging is not really providing a modern API,...
How to draw a line in android
...draws 2 lines which form a cross on the top left of the screen:
DrawView.java
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.view.View;
public class DrawView extends View {
Paint paint = new Paint()...
What is __gxx_personality_v0 for?
...personality routine is for C++ exception handling (as opposed to, say, gcj/Java exception handling).
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Convert a float64 to an int in Go
...sts have a problem in Go that can be unexpected (at least if you come from Java): "In all non-constant conversions involving floating-point or complex values, if the result type cannot represent the value the conversion succeeds but the result value is implementation-dependent." (golang.org/ref/spec...
T-SQL datetime rounded to nearest minute and nearest hours with using functions
...er of hours since Jan 1st 1900, to Jan 1st 1900' — I encountered this in Java/SQL, where it looks ugly. In my case it really should have been done on the Java side.
– Corwin Newall
Aug 3 '19 at 20:24
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How can I tell IntelliJ's “Find in Files” to ignore generated files?
...filter starting with ! sign to exclude.
Example to search code not in Test Java files:
!*Test.java
If you have a few types of files you can separate with , sign.
Example to search in Kotlin and Groovy files only:
*.kt,*.groovy
This might be also helpful.
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Separate Back Stack for each tab in Android using Fragments
...>
</LinearLayout>
</TabHost>
5. AppTabAFirstFragment.java (First fragment in Tab A, simliar for all Tabs)
public class AppTabAFragment extends BaseFragment {
private Button mGotoButton;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup containe...
Unable to execute dex: method ID not in [0, 0xffff]: 65536
...nabling multidex support (this one error in particular gave me nightmares: java.lang.ClassNotFoundException: Didn't find class "org.qtproject.qt5.android.QtActivityDelegate" on path: DexPathList[[],nativeLibraryDirectories=[/vendor/lib, /system/lib]]). It turned out that my mistake was that I wasn't...