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copied!<p>I agree with foxter that the best choice is to get the code from the newest Android version and add to your codebase. Everytime I'm faced with issues like this, I create a method to abstract versions idiosyncrasies. It goes like this:</p> <pre><code>public class FWCompat { public static boolean isFroyo_8_OrNewer() { return Build.VERSION.SDK_INT >= Build.VERSION_CODES.FROYO; } public static boolean isGingerbread_9_OrNewer() { return Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD; } public static boolean isHoneycomb_11_OrNewer() { return Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB; } public static boolean isHoneycomb_13_OrNewer() { return Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2; } public static boolean isJellyBean_16_OrNewer() { return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN; } } @SuppressLint("NewApi") public class FWUriCompat { public static Set<String> getQueryParameterNames(Uri uri) { if (FWCompat.isHoneycomb_11_OrNewer()) { return uri.getQueryParameterNames(); } return FW_getQueryParameterNames(uri); } private static Set<String> FW_getQueryParameterNames(Uri uri) { if (uri == null) { throw new InvalidParameterException("Can't get parameter from a null Uri"); } if (uri.isOpaque()) { throw new UnsupportedOperationException("This isn't a hierarchical URI."); } String query = uri.getEncodedQuery(); if (query == null) { return Collections.emptySet(); } Set<String> names = new LinkedHashSet<String>(); int start = 0; do { int next = query.indexOf('&', start); int end = (next == -1) ? query.length() : next; int separator = query.indexOf('=', start); if (separator > end || separator == -1) { separator = end; } String name = query.substring(start, separator); names.add(Uri.decode(name)); // Move start to end of name. start = end + 1; } while (start < query.length()); return Collections.unmodifiableSet(names); } } </code></pre>

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