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Java: random long number in 0
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Starting from Java 7 (or Android API Level 21 = 5.0+) you could directly use ThreadLocalRandom.current().nextLong(n) (for 0 ≤ x < n) and ThreadLocalRandom.current().nextLong(m, n) (for m ≤ x < n). See @Alex's answer for detail.
If you ar...
Running code in main thread from another thread
In an android service I have created thread(s) for doing some background task.
16 Answers
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Open new Terminal Tab from command line (Mac OS X)
Is it possible to open a new tab in Mac OS X's terminal from the command line in a currently opened tab?
13 Answers
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How to enable zoom controls and pinch zoom in a WebView?
The default Browser app for Android shows zoom controls when you're scrolling and also allows for pinch zooming. How can I enable this feature for my own Webview?
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How to convert a Bitmap to Drawable in android?
How can I convert a Bitmap image to Drawable ?
10 Answers
10
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RecyclerView onClick
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}
})
);
RecyclerItemClickListener implementation:
import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
public class RecyclerItemClickListener implements Recyc...
Draw multi-line text to Canvas
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Unfortunately Android doesn't know what \n is. What you have to do is strip the \n and then offset the Y to get your text on the next line. So something like this:
canvas.drawText("This is", 100, 100, mTextPaint);
canvas.drawText("multi-l...
error opening HPROF file: IOException: Unknown HPROF Version
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The hprof file you get from Android has android specific format. You should convert hprof file take from Android OS into standard hprof format. For this you can use hprof-conv tool that is located at AndroidSDK/tools/hprof-conv.
For example:
hprof-co...
How do I programmatically determine operating system in Java?
...OperatingSystemType();
switch (ostype) {
case Windows: break;
case MacOS: break;
case Linux: break;
case Other: break;
}
The helper class is:
/**
* helper class to check the operating system this Java VM runs in
*
* please keep the notes below as a pseudo-license
*
* http://s...
Android - Setting a Timeout for an AsyncTask?
... I know this is years later, but this still isn't built into android so I made a support class. I hope it helps someone out. gist.github.com/scottTomaszewski/…
– Scott Tomaszewski
Sep 19 '16 at 23:37
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