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Utility.javaAPI DocAndroid 1.5 API7358Wed May 06 22:42:46 BST 2009com.android.email

Utility

public class Utility extends Object

Fields Summary
Constructors Summary
Methods Summary
public static final booleanarrayContains(java.lang.Object[] a, java.lang.Object o)

        for (int i = 0, count = a.length; i < count; i++) {
            if (a[i].equals(o)) {
                return true;
            }
        }
        return false;
public static java.lang.Stringbase64Decode(java.lang.String encoded)

        if (encoded == null) {
            return null;
        }
        byte[] decoded = new Base64().decode(encoded.getBytes());
        return new String(decoded);
public static java.lang.Stringbase64Encode(java.lang.String s)

        if (s == null) {
            return s;
        }
        byte[] encoded = new Base64().encode(s.getBytes());
        return new String(encoded);
public static java.lang.Stringcombine(java.lang.Object[] parts, char seperator)
Combines the given array of Objects into a single string using the seperator character and each Object's toString() method. between each part.

param
parts
param
seperator
return

        if (parts == null) {
            return null;
        }
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < parts.length; i++) {
            sb.append(parts[i].toString());
            if (i < parts.length - 1) {
                sb.append(seperator);
            }
        }
        return sb.toString();
public static java.lang.StringfastUrlDecode(java.lang.String s)
A fast version of URLDecoder.decode() that works only with UTF-8 and does only two allocations. This version is around 3x as fast as the standard one and I'm using it hundreds of times in places that slow down the UI, so it helps.

        try {
            byte[] bytes = s.getBytes("UTF-8");
            byte ch;
            int length = 0;
            for (int i = 0, count = bytes.length; i < count; i++) {
                ch = bytes[i];
                if (ch == '%") {
                    int h = (bytes[i + 1] - '0");
                    int l = (bytes[i + 2] - '0");
                    if (h > 9) {
                        h -= 7;
                    }
                    if (l > 9) {
                        l -= 7;
                    }
                    bytes[length] = (byte) ((h << 4) | l);
                    i += 2;
                }
                else if (ch == '+") {
                    bytes[length] = ' ";
                }
                else {
                    bytes[length] = bytes[i];
                }
                length++;
            }
            return new String(bytes, 0, length, "UTF-8");
        }
        catch (UnsupportedEncodingException uee) {
            return null;
        }
public static java.lang.StringimapQuoted(java.lang.String s)
Apply quoting rules per IMAP RFC, quoted = DQUOTE *QUOTED-CHAR DQUOTE QUOTED-CHAR = / "\" quoted-specials quoted-specials = DQUOTE / "\" This is used primarily for IMAP login, but might be useful elsewhere. NOTE: Not very efficient - you may wish to preflight this, or perhaps it should check for trouble chars before calling the replace functions.

param
s The string to be quoted.
return
A copy of the string, having undergone quoting as described above

        
        // First, quote any backslashes by replacing \ with \\
        // regex Pattern:  \\    (Java string const = \\\\)
        // Substitute:     \\\\  (Java string const = \\\\\\\\)
        String result = s.replaceAll("\\\\", "\\\\\\\\");
        
        // Then, quote any double-quotes by replacing " with \"
        // regex Pattern:  "    (Java string const = \")
        // Substitute:     \\"  (Java string const = \\\\\")
        result = result.replaceAll("\"", "\\\\\"");
        
        // return string with quotes around it
        return "\"" + result + "\"";
public static booleanisDateToday(java.util.Date date)
Returns true if the specified date is within today. Returns false otherwise.

param
date
return

        // TODO But Calendar is so slowwwwwww....
        Date today = new Date();
        if (date.getYear() == today.getYear() &&
                date.getMonth() == today.getMonth() &&
                date.getDate() == today.getDate()) {
            return true;
        }
        return false;
public static java.lang.StringquoteString(java.lang.String s)
Ensures that the given string starts and ends with the double quote character. The string is not modified in any way except to add the double quote character to start and end if it's not already there. TODO: Rename this, because "quoteString()" can mean so many different things. sample -> "sample" "sample" -> "sample" ""sample"" -> "sample" "sample"" -> "sample" sa"mp"le -> "sa"mp"le" "sa"mp"le" -> "sa"mp"le" (empty string) -> "" " -> ""

param
s
return

        if (s == null) {
            return null;
        }
        if (!s.matches("^\".*\"$")) {
            return "\"" + s + "\"";
        }
        else {
            return s;
        }
public static final java.lang.StringreadInputStream(java.io.InputStream in, java.lang.String encoding)

        InputStreamReader reader = new InputStreamReader(in, encoding);
        StringBuffer sb = new StringBuffer();
        int count;
        char[] buf = new char[512];
        while ((count = reader.read(buf)) != -1) {
            sb.append(buf, 0, count);
        }
        return sb.toString();
public static booleanrequiredFieldValid(android.widget.TextView view)

        return view.getText() != null && view.getText().length() > 0;
public static booleanrequiredFieldValid(android.text.Editable s)

        return s != null && s.length() > 0;
public static voidsetCompoundDrawablesAlpha(android.widget.TextView view, int alpha)

//        Drawable[] drawables = view.getCompoundDrawables();
//        for (Drawable drawable : drawables) {
//            if (drawable != null) {
//                drawable.setAlpha(alpha);
//            }
//        }