Example usage for java.lang CharSequence charAt

List of usage examples for java.lang CharSequence charAt

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Introduction

In this page you can find the example usage for java.lang CharSequence charAt.

Prototype

char charAt(int index);

Source Link

Document

Returns the char value at the specified index.

Usage

From source file:org.batoo.common.util.StringUtils.java

/**
 * Check whether the given CharSequence contains any whitespace characters.
 * /*from ww  w .  j  av a2 s.co  m*/
 * @param str
 *            the CharSequence to check (may be <code>null</code>)
 * @return <code>true</code> if the CharSequence is not empty and contains at least 1 whitespace character
 * @see java.lang.Character#isWhitespace
 */
public static boolean containsWhitespace(CharSequence str) {
    if (!StringUtils.hasLength(str)) {
        return false;
    }
    final int strLen = str.length();
    for (int i = 0; i < strLen; i++) {
        if (Character.isWhitespace(str.charAt(i))) {
            return true;
        }
    }
    return false;
}

From source file:org.batoo.common.util.StringUtils.java

/**
 * Check whether the given CharSequence has actual text. More specifically, returns <code>true</code> if the string not
 * <code>null</code>, its length is greater than 0, and it contains at least one non-whitespace character.
 * <p>//  w w w  .j av a  2s . co m
 * 
 * <pre>
 * StringUtils.hasText(null) = false
 * StringUtils.hasText("") = false
 * StringUtils.hasText(" ") = false
 * StringUtils.hasText("12345") = true
 * StringUtils.hasText(" 12345 ") = true
 * </pre>
 * 
 * @param str
 *            the CharSequence to check (may be <code>null</code>)
 * @return <code>true</code> if the CharSequence is not <code>null</code>, its length is greater than 0, and it does not contain
 *         whitespace only
 * @see java.lang.Character#isWhitespace
 */
public static boolean hasText(CharSequence str) {
    if (!StringUtils.hasLength(str)) {
        return false;
    }
    final int strLen = str.length();
    for (int i = 0; i < strLen; i++) {
        if (!Character.isWhitespace(str.charAt(i))) {
            return true;
        }
    }
    return false;
}

From source file:com.asakusafw.runtime.io.csv.CsvEmitter.java

private void appendEscaped(StringBuilder buffer, CharSequence string) {
    buffer.append(ESCAPE);// w  w w  . j  av  a  2 s  .  c o  m
    for (int i = 0, n = string.length(); i < n; i++) {
        char c = string.charAt(i);
        if (c == ESCAPE) {
            buffer.append(ESCAPE);
        }
        buffer.append(c);
    }
    buffer.append(ESCAPE);
}

From source file:com.asakusafw.runtime.io.text.csv.CsvFieldReader.java

@Override
public boolean nextField() throws IOException {
    if (lastState.moreFields == false) {
        nextReadIndex = -1;//from w  ww  . j a  v  a  2  s .  c o m
        currentFieldIndex = -1;
        lastState = State.AFTER_RECORD;
        return false;
    }
    State state = State.BEGIN_FIELD;
    CharSequence line = currentLine;
    assert line != null;
    fieldBuffer.setLength(0);
    int index = nextReadIndex;
    do {
        int c = index == line.length() ? EOF : line.charAt(index++);
        switch (state) {
        case BEGIN_FIELD:
            state = doBeginField(c);
            break;
        case BARE_BODY:
            state = doBareBody(c);
            break;
        case QUOTE_BODY:
            state = doQuoteBody(c);
            break;
        case QUOTE_BODY_SAW_QUOTE:
            state = doQuoteBodySawQuote(c);
            break;
        default:
            throw new AssertionError(lastState);
        }
    } while (state.moreCharacters);

    nextReadIndex = index;
    currentFieldIndex++;
    lastState = state;
    return true;
}

From source file:com.amberfog.countryflagsdemo.BaseFlagFragment.java

protected void initUI(View rootView) {
    mSpinner = (Spinner) rootView.findViewById(R.id.spinner);
    mSpinner.setOnItemSelectedListener(mOnItemSelectedListener);

    mAdapter = new CountryAdapter(getActivity());

    mSpinner.setAdapter(mAdapter);//  w  w w  .j a  v a  2  s  .  c  om

    mPhoneEdit = (EditText) rootView.findViewById(R.id.phone);
    mPhoneEdit.addTextChangedListener(new CustomPhoneNumberFormattingTextWatcher(mOnPhoneChangedListener));
    InputFilter filter = new InputFilter() {
        public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart,
                int dend) {
            for (int i = start; i < end; i++) {
                char c = source.charAt(i);
                if (dstart > 0 && !Character.isDigit(c)) {
                    return "";
                }
            }
            return null;
        }
    };

    mPhoneEdit.setFilters(new InputFilter[] { filter });

    mPhoneEdit.setImeOptions(EditorInfo.IME_ACTION_SEND);
    mPhoneEdit.setImeActionLabel(getString(R.string.label_send), EditorInfo.IME_ACTION_SEND);
    mPhoneEdit.setOnEditorActionListener(new TextView.OnEditorActionListener() {
        @Override
        public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
            if (actionId == EditorInfo.IME_ACTION_SEND) {
                send();
                return true;
            }
            return false;
        }
    });

}

From source file:com.sbgapps.simplenumberpicker.decimal.DecimalPickerDialog.java

@SuppressLint("SetTextI18n")
@NonNull/*  w ww  .j  av  a 2 s .c o  m*/
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    TypedArray attributes = getContext().obtainStyledAttributes(theme, R.styleable.SimpleNumberPicker);

    LayoutInflater inflater = getActivity().getLayoutInflater();
    @SuppressLint("InflateParams")
    View view = inflater.inflate(R.layout.snp_dialog_decimal_picker, null);

    // Init number
    int color = attributes.getColor(R.styleable.SimpleNumberPicker_snpKeyColor,
            ContextCompat.getColor(getContext(), android.R.color.secondary_text_light));
    numberTextView = (TextView) view.findViewById(R.id.tv_hex_number);
    numberTextView.setTextColor(color);
    if (null != savedInstanceState && savedInstanceState.containsKey(ARG_SAVED_VALUE))
        numberTextView.setText(savedInstanceState.getString(ARG_SAVED_VALUE));

    // Init backspace
    color = attributes.getColor(R.styleable.SimpleNumberPicker_snpBackspaceColor,
            ContextCompat.getColor(getContext(), android.R.color.secondary_text_light));
    backspaceButton = (ImageButton) view.findViewById(R.id.key_backspace);
    backspaceButton.setImageDrawable(
            ThemeUtil.makeSelector(getContext(), R.drawable.snp_ic_backspace_black_24dp, color));
    backspaceButton.setOnClickListener(v -> {
        CharSequence number = numberTextView.getText().subSequence(0, numberTextView.getText().length() - 1);
        if (1 == number.length() && '-' == number.charAt(0))
            number = "";
        numberTextView.setText(number);
        onNumberChanged();
    });
    backspaceButton.setOnLongClickListener(v -> {
        numberTextView.setText("");
        onNumberChanged();
        return true;
    });

    // Create dialog
    dialog = new AlertDialog.Builder(getContext(), theme).setView(view)
            .setPositiveButton(android.R.string.ok, (dialog, which) -> {
                String result = numberTextView.getText().toString();
                if (result.isEmpty())
                    result = "0";
                final float number = Float.parseFloat(result);
                final Activity activity = getActivity();
                final Fragment fragment = getParentFragment();
                if (activity instanceof DecimalPickerHandler) {
                    final DecimalPickerHandler handler = (DecimalPickerHandler) activity;
                    handler.onDecimalNumberPicked(reference, number);
                } else if (fragment instanceof DecimalPickerHandler) {
                    final DecimalPickerHandler handler = (DecimalPickerHandler) fragment;
                    handler.onDecimalNumberPicked(reference, number);
                }
                dismiss();
            }).setNegativeButton(android.R.string.cancel, (dialog, which) -> dismiss()).create();

    // Init dialog
    color = attributes.getColor(R.styleable.SimpleNumberPicker_snpDialogBackground,
            ContextCompat.getColor(getContext(), android.R.color.white));
    dialog.getWindow().setBackgroundDrawable(new ColorDrawable(color));

    // Init keys
    View.OnClickListener listener = v -> {
        int key = (int) v.getTag();
        String id = numberTextView.getText() + Integer.toString(key);
        numberTextView.setText(id);
        onNumberChanged();
    };

    color = attributes.getColor(R.styleable.SimpleNumberPicker_snpKeyColor,
            ThemeUtil.getThemeAccentColor(getContext()));
    TypedArray ids = getResources().obtainTypedArray(R.array.snp_key_ids);
    for (int i = 0; i < NB_KEYS; i++) {
        TextView key = (TextView) view.findViewById(ids.getResourceId(i, -1));
        key.setTag(i);
        key.setOnClickListener(listener);
        key.setTextColor(color);
    }

    // Init sign
    TextView sign = (TextView) view.findViewById(R.id.key_sign);
    if (relative) {
        sign.setTextColor(color);
        sign.setOnClickListener(v -> {
            String number = numberTextView.getText().toString();
            if (number.startsWith("-")) {
                numberTextView.setText(number.substring(1));
            } else {
                numberTextView.setText("-" + number);
            }
            onNumberChanged();
        });
    } else {
        sign.setVisibility(View.INVISIBLE);
    }

    // Init point
    TextView point = (TextView) view.findViewById(R.id.key_point);
    if (natural) {
        point.setVisibility(View.INVISIBLE);
    } else {
        point.setTextColor(color);
        point.setOnClickListener(v -> {
            if (numberTextView.getText().toString().contains("."))
                return;
            String number = numberTextView.getText().toString();
            numberTextView.setText(number + ".");
            onNumberChanged();
        });
    }

    ids.recycle();
    attributes.recycle();

    return dialog;
}

From source file:br.msf.commons.text.EnhancedStringBuilder.java

protected static boolean startsWith(final CharSequence prefix, final int offset, final CharSequence sequence) {
    if (CharSequenceUtils.isEmptyOrNull(prefix) || CharSequenceUtils.isEmptyOrNull(sequence)
            || prefix.length() > sequence.length()) {
        return false;
    }//from w  ww . j a  v a  2  s  .  c  om
    int i = offset, j = 0;
    int pLen = prefix.length();
    while (--pLen >= 0) {
        if (sequence.charAt(i++) != prefix.charAt(j++)) {
            return false;
        }
    }
    return true;
}

From source file:com.awt.supark.EditCar.java

public void radioListener() {
    InputFilter charFilter = filter = new InputFilter() {
        public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart,
                int dend) {
            for (int i = start; i < end; i++) {
                if (!Character.isLetterOrDigit(source.charAt(i))) {
                    return "";
                }//from  w  w  w.j a  v  a 2 s.  c o m
            }
            return null;
        }
    };
    if (radioNewSrb.isChecked()) {
        txtCity.setVisibility(View.VISIBLE);
        licensePlate.setBackgroundDrawable(getResources().getDrawable(R.drawable.licenseplate));

        updateLicensePlate(licenseNum);
        //txtNum.setFilters(new InputFilter[]{filter, new InputFilter.LengthFilter(7), new InputFilter.AllCaps()});
        carLicense.setFilters(
                new InputFilter[] { new InputFilter.LengthFilter(8), new InputFilter.AllCaps(), charFilter });
    } else if (radioGeneric.isChecked()) {
        txtCity.setVisibility(View.GONE);
        licensePlate.setBackgroundDrawable(getResources().getDrawable(R.drawable.licenseplate2));

        // Reset
        txtCity.setText("");
        updateLicensePlate(licenseNum);
        //txtNum.setFilters(new InputFilter[]{filter, new InputFilter.LengthFilter(12), new InputFilter.AllCaps()});
        carLicense.setFilters(
                new InputFilter[] { new InputFilter.LengthFilter(12), new InputFilter.AllCaps(), charFilter });
    }
}

From source file:br.msf.commons.util.CharSequenceUtils.java

public static boolean isUpperCase(final CharSequence sequence) {
    if (isEmpty(sequence)) {
        return true;
    }/*  w  ww .j ava 2  s. c o  m*/
    for (int i = 0; i < sequence.length(); i++) {
        char c = sequence.charAt(i);
        if (c != Character.toUpperCase(c)) {
            return false;
        }
    }
    return true;
}

From source file:br.msf.commons.util.CharSequenceUtils.java

public static boolean isLowerCase(final CharSequence sequence) {
    if (isEmpty(sequence)) {
        return true;
    }/*from www .j ava 2 s .  c  o m*/
    for (int i = 0; i < sequence.length(); i++) {
        char c = sequence.charAt(i);
        if (c != Character.toLowerCase(c)) {
            return false;
        }
    }
    return true;
}