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How to get the width and height of an android.widget.ImageView?
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My answer on this question might help you:
int finalHeight, finalWidth;
final ImageView iv = (ImageView)findViewById(R.id.scaled_image);
final TextView tv = (TextView)findViewById(R.id.size_label);
ViewTreeObserver vto = iv.getViewTreeObserver();
vto.addOnPreDrawListe...
Android Crop Center of Bitmap
...to be a valid correct. Your current version creates the correct starting point but then includes the remainder of the too long side. For instance given a 100x1000 image you get back a 100x550 image.
– Guvante
Mar 29 '13 at 19:38
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What function is to replace a substring from a string in C?
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The optimizer should eliminate most of the local variables. The tmp pointer is there to make sure strcpy doesn't have to walk the string to find the null. tmp points to the end of result after each call. (See Shlemiel the painter's algorithm for why strcpy can be annoying.)
// You must free th...
Why would you use an ivar?
...e
Yes, this can make a difference in some cases. Some programs have constraints where they can not use any objc messaging in certain parts of the program (think realtime). In other cases, you may want to access it directly for speed. In other cases, it's because objc messaging acts as an optimizatio...
Why shouldn't all functions be async by default?
...d now includes not just CPU computations but also some I/O? You'll need to convert the method to async but this would break API and all the callers up the stack would be needed to be updated as well (and they can even be different apps from different vendors). Or you'll need to add async version alo...
Android Spinner: Get the selected item change event
...oid onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
// your code here
}
@Override
public void onNothingSelected(AdapterView<?> parentView) {
// your code here
}
});
This works for me.
Note that onItemSelected ...
Difference between two lists
...t way to go. If your type overrides Equals and GetHashCode, or you're only interested in reference type equality (i.e. two references are only "equal" if they refer to the exact same object), you can just use:
var list3 = list1.Except(list2).ToList();
If you need to express a custom idea of equal...
In Java, what is the best way to determine the size of an object?
... too many rows of data and cause OutOfMemoryError s. Each row translates into an object. Is there an easy way to find out the size of that object programmatically? Is there a reference that defines how large primitive types and object references are for a VM ?
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Getting the current Fragment instance in the viewpager
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@Override
public void setPrimaryItem(ViewGroup container, int position, Object object) {
if (getCurrentFragment() != object) {
mCurrentFragment = ((Fragment) object);
}
super.setPrimaryItem(container, position, object);
}
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Base64 encoding and decoding in client-side Javascript
...JavaScript');
// If we don't use toString(), JavaScript assumes we want to convert the object to utf8.
// We can make it convert to other formats by passing the encoding type to toString().
var s = b.toString('base64');
And here is how you decode base64 encoded strings:
var b = new Buffer('SmF2YVNj...