Example usage for java.util Map keySet

Introduction

In this page you can find the example usage for java.util Map keySet.

Prototype

Set<K> keySet();

Source Link

Document

Returns a Set view of the keys contained in this map.

Usage

From source file:Main.java

/**
 * Removes the entries of a map that have null values.
 * /*from  ww  w.j a v a  2  s .  c  o m*/
 * @param map
 *            The map to strip.
 * @return The map that was passed in.
 */
public static <K, V> Map<K, V> stripNulls(final Map<K, V> map) {
    List<Object> toRemove = null;
    for (final Object key : map.keySet()) {
        if (map.get(key) == null) {
            toRemove = safeAdd(toRemove, key);
        }
    }
    if (toRemove != null) {
        for (final Object key : toRemove) {
            map.remove(key);
        }
    }
    return map;
}

From source file:Main.java

/**
 * Copy tags to clipboard as multi-line text in the form
 * key1=value1// w  ww . j a  va2s .c  o  m
 * key2=value2
 * .....
 * @param tags
 */
@SuppressWarnings("deprecation")
@SuppressLint("NewApi")
public static void copyTags(Context ctx, Map<String, String> tags) {

    StringBuffer tagsAsText = new StringBuffer();

    for (String key : tags.keySet()) {
        tagsAsText.append(key + "=" + tags.get(key) + "\n");
    }

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
        ClipboardManager clipboard = (ClipboardManager) ctx.getSystemService(Context.CLIPBOARD_SERVICE);
        ClipData clip = ClipData.newPlainText("OSM Tags", tagsAsText.toString());
        clipboard.setPrimaryClip(clip);
    } else {
        android.text.ClipboardManager oldClipboard = (android.text.ClipboardManager) ctx
                .getSystemService(Context.CLIPBOARD_SERVICE);
        oldClipboard.setText(tagsAsText.toString());
    }
}

From source file:Main.java

public static boolean savePreferencesInExternal(Context ctx, SharedPreferences pref) {

    Properties propfile = new Properties();
    Map<String, ?> keymap = pref.getAll();
    Iterator<String> keyit = keymap.keySet().iterator();
    Log.d("External", "Saving prefrences to external Storages");

    while (keyit.hasNext()) {
        String key = keyit.next();
        propfile.put(key, keymap.get(key));
    }//from  ww  w  .j a  va 2 s .c o m
    if (isExternalStorageAvailableforWriting() == true) {
        try {
            propfile.storeToXML(new FileOutputStream(new File(ctx.getExternalFilesDir(null), "install_info")),
                    null);
        } catch (Exception e) {

            e.printStackTrace();
        }

        Log.d("External", "Saved prefrences to external ");
        return true;
    } else {
        Log.d("External", "Failed to Save prefrences for external ");
        return false;
    }
}

From source file:Main.java

public static String getChartsType(Map<String, Long> map) {
    String TITLE = "";
    if (map.isEmpty()) {
        return null;
    }//from  w  ww  . j  a  v a  2s  .  c om
    Set<String> keySet = map.keySet();
    for (String title : keySet) {
        TITLE += title + ",";
    }
    TITLE = TITLE.substring(0, TITLE.length() - 1);
    return TITLE;
}

From source file:Main.java

public static String convertToString(Map<String, Object> properties) {
    List<String> parts = new ArrayList<String>();
    for (String key : properties.keySet()) {
        Object value = properties.get(key);
        if (value instanceof String) {
            parts.add(encode('=', new String[] { key, (String) value }));
        } else {/*from   www  .j ava  2 s  . c  o  m*/
            throw new RuntimeException("Can't encode " + value);
        }
    }
    return encode(';', parts);
}

From source file:no.digipost.api.xml.XpathUtil.java

@SuppressWarnings("unchecked")
public static List<Node> getDOMXPath(final String expression, final Element element) {
    try {/*from   w w  w  . j  a  va  2 s . c om*/
        DOMXPath xpath = new DOMXPath(expression);
        Map<String, String> xpathNamespaces = getXpathNamespaces();
        for (String s : xpathNamespaces.keySet()) {
            xpath.addNamespace(s, xpathNamespaces.get(s));
        }
        return xpath.selectNodes(element);
    } catch (JaxenException e) {
        throw new RuntimeException(e);
    }

}

From source file:Main.java

public static String getChartsType1(Map<String, Long> map) {
    String DATA = "";
    if (map.isEmpty()) {
        return null;
    }//from  w ww  .jav a 2 s  .  c  om
    Set<String> keySet = map.keySet();
    for (String title : keySet) {
        Long long1 = map.get(title);
        DATA += "{value:" + long1 + ",name:'" + title + "'},";
    }
    DATA = DATA.substring(0, DATA.length() - 1);
    return "[" + DATA + "]";
}

From source file:Main.java

private static void organizeAndStart(Activity activity, Class<?> classes, Map<String, String> paramMap) {
    intent = new Intent(activity, classes);
    if (null != paramMap) {
        Set<String> set = paramMap.keySet();
        for (Iterator<String> iterator = set.iterator(); iterator.hasNext();) {
            String key = iterator.next();
            intent.putExtra(key, paramMap.get(key));
        }//from  w  w  w. ja v  a  2s. c  o m
    }
    intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    activity.startActivity(intent);
}

From source file:Main.java

public static void mapToAndroidLayoutMapper(Class classObj, Map map, String prefixStr, View view) {

    for (Object keyObj : map.keySet().toArray()) {
        String keyStr = keyObj.toString();
        Field fieldObj = null;/*w  w  w  .  java2 s  .  c o  m*/
        try {
            fieldObj = classObj.getField(prefixStr + "_" + keyStr);
        } catch (NoSuchFieldException e) {
            continue;
        }
        Object layoutObj = null;
        try {
            layoutObj = fieldObj.get(fieldObj);
        } catch (IllegalAccessException e) {
            continue;
        }
        Integer layoutIntvalue = (Integer) layoutObj;

        View selectedView = view.findViewById(layoutIntvalue);

        if (selectedView instanceof TextView) {
            TextView textView = (TextView) selectedView;
            textView.setText(String.valueOf(map.get(keyStr)));
        } else if (selectedView instanceof ImageView) {
            ImageView imageView = (ImageView) selectedView;

        }

    }

}

From source file:Main.java

public static String simpleMapToJsonStr(Map map) {
    if (map == null || map.isEmpty()) {
        return "null";
    }//  ww w . jav  a  2 s.  co m
    String jsonStr = "{";
    Set<?> keySet = map.keySet();
    for (Object key : keySet) {
        jsonStr += "\"" + key + "\":\"" + map.get(key) + "\",";
    }
    jsonStr = jsonStr.substring(0, jsonStr.length() - 1);
    jsonStr += "}";
    return jsonStr;
}