Check for network connection
This is how to check for an available data connection.
ConnectivityManager cm =
(ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
if(cm != null) {
// Connection found
} else {
// Handle no connection;
}
Bitmap to byte[]
Ok so how do I do this the other way round? Like so:
ByteArrayOutputStream baos = new ByteArrayOutputStream();
myImageBitmap.compress(CompressFormat.PNG, 100, baos);
byte[] myImageBytes = baos.toByteArray();
byte[] to Bitmap
To create a Bitmap from a byte array you can use the super handy BitmapFactory
int offset = 0; // This is the point in the byte array that I want the decode to start from
int length = myByteArray.length; // This is the length of the byte array I want to decode
Bitmap myBitmap = BitmapFactory.decodeByteArray(myByteArray, offset, length);
Android Logging
How to print to Logcat for debugging purposes.
Log.d("TAG", "MESSAGE");
I like to define my tag as a constant and set up a filter in Logcat to read only that tag. This results in application specific Log streams.
