Example usage for android.text TextUtils isEmpty

Introduction

In this page you can find the example usage for android.text TextUtils isEmpty.

Prototype

public static boolean isEmpty(@Nullable CharSequence str)

Source Link

Document

Returns true if the string is null or 0-length.

Usage

From source file:Main.java

public static void showWebPage(String url, Context context) {
    if (TextUtils.isEmpty(url))
        return;/*w  w  w  . jav  a  2  s.c om*/

    Uri uri = Uri.parse(url);
    Intent intent = new Intent(Intent.ACTION_VIEW, uri);
    context.startActivity(intent);
}

From source file:Main.java

public static boolean deleteFile(String path) {
    // If path == null will throw NullPointException.
    if (TextUtils.isEmpty(path)) {
        return false;
    }//  w w w  . ja v a2s .  c  o  m

    File file = new File(path);
    if (!file.exists()) {
        return false;
    }

    boolean flag = file.delete();
    File parent = file.getParentFile();
    if (isEmptyDirectory(parent)) {
        parent.delete();
    }
    return flag;
}

From source file:Main.java

/**
 * Get characters' unicode in hexadecimal.
 *///from  w  w w .j a  v  a2  s  .  c o  m
public static String getUnicode(String text, int len_limit) {
    if (TextUtils.isEmpty(text) || len_limit <= 0) {
        return "";
    }

    StringBuilder stringBuilder = new StringBuilder();

    final char[] CHARS = text.toCharArray();
    for (int len = CHARS.length, i = len - 1; i >= 0; --i) {
        if (len - i <= len_limit) {
            stringBuilder.insert(0, Integer.toHexString(CHARS[i]).toUpperCase());
            stringBuilder.insert(0, " ");
        } else {
            stringBuilder.insert(0, " ...");
            break;
        }
    }

    //Remove the first superfluous " ".
    return stringBuilder.substring(1);
}

From source file:Main.java

/**
 * Toast//  www  .j av a2s. com
 * @param context
 * @param msg
 */
public static void showToast(Context context, String msg) {
    if (!TextUtils.isEmpty(msg)) {
        Toast.makeText(context, msg, Toast.LENGTH_SHORT).show();
    }
}

From source file:Main.java

public static String getMimeType(String filePath) {
    if (TextUtils.isEmpty(filePath)) {
        return "";
    }/*w  ww. j  av a  2 s  . c o  m*/
    String type = null;
    String extension = getExtensionName(filePath.toLowerCase());
    if (!TextUtils.isEmpty(extension)) {
        MimeTypeMap mime = MimeTypeMap.getSingleton();
        type = mime.getMimeTypeFromExtension(extension);
    }
    Log.i(TAG, "url:" + filePath + " " + "type:" + type);

    // FIXME
    if (TextUtils.isEmpty(type) && filePath.endsWith("aac")) {
        type = "audio/aac";
    }

    return type;
}

From source file:Main.java

public static List<String> split(String str, char delimiter) {

    if (TextUtils.isEmpty(str)) {
        return Collections.emptyList();
    }/*from   ww w .ja  v a  2  s.com*/

    int substringsCount = 1;
    for (int i = 0, len = str.length(); i < len; i++) {
        if (str.charAt(i) == delimiter) {
            substringsCount++;
        }
    }

    if (substringsCount == 1) {
        return Collections.singletonList(str);
    }

    List<String> split = new ArrayList<String>(substringsCount);

    int index = str.indexOf(delimiter);
    int lastIndex = 0;
    while (index != -1) {

        split.add(str.substring(lastIndex, index));

        lastIndex = index + 1;
        index = str.indexOf(delimiter, lastIndex);
    }

    split.add(str.substring(lastIndex, str.length())); // add the final string after the last delimiter

    return split;
}

From source file:Main.java

public static void sendSms(Context context, String phoneNumber, String content) {
    Uri uri = Uri.parse("smsto:" + (TextUtils.isEmpty(phoneNumber) ? "" : phoneNumber));
    Intent intent = new Intent(Intent.ACTION_SENDTO, uri);
    intent.putExtra("sms_body", TextUtils.isEmpty(content) ? "" : content);
    context.startActivity(intent);// w w  w  . j  a va2s.  c o  m
}

From source file:Main.java

public static Rect getTextRect(String text, Paint paint) {
    Rect rect = new Rect();
    if (!TextUtils.isEmpty(text)) {
        paint.getTextBounds(text, 0, text.length(), rect);
    }/*  ww  w  .j av a 2s . com*/
    return rect;
}

From source file:Main.java

public static boolean copyFile(String fromFilePath, String toFilePath) {
    if (!TextUtils.isEmpty(fromFilePath) && !TextUtils.isEmpty(toFilePath)) {
        if (!(new File(fromFilePath)).exists()) {
            return false;
        } else {/*from   ww  w .  j  a  v a  2s.c  o m*/
            try {
                FileInputStream e = new FileInputStream(fromFilePath);
                FileOutputStream fosto = new FileOutputStream(toFilePath);
                copyFile(e, fosto);
                return true;
            } catch (Throwable var4) {
                return false;
            }
        }
    } else {
        return false;
    }
}

From source file:Main.java

public static boolean makeFolder(String filePath) {
    String folderName = getFolderName(filePath);
    if (TextUtils.isEmpty(folderName)) {
        return false;
    }//  www .  j av a 2 s  .  co  m

    File folder = new File(folderName);
    return (folder.exists() && folder.isDirectory()) ? true : folder.mkdirs();
}