android.view.animation.AnticipateOvershootInterpolator#android.text.Editable源码实例Demo

/**
 * Closes a list item.
 *
 * @param text
 * @param indentation
 */
public final void closeItem(final Editable text, final int indentation) {
    if (text.length() > 0 && text.charAt(text.length() - 1) != '\n') {
        text.append("\n");
    }
    final Object[] replaces = getReplaces(text, indentation);
    final int len = text.length();
    final ListTag listTag = getLast(text);
    final int where = text.getSpanStart(listTag);
    text.removeSpan(listTag);
    if (where != len) {
        for (Object replace : replaces) {
            text.setSpan(replace, where, len, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
        }
    }
}
 

@Override
public boolean onTextContextMenuItem(int id) {
	if (id == android.R.id.paste) {
		Editable editable = getEditableText();
		InputFilter[] filters = editable.getFilters();
		InputFilter[] tempFilters = new InputFilter[filters != null ? filters.length + 1 : 1];
		if (filters != null) {
			System.arraycopy(filters, 0, tempFilters, 1, filters.length);
		}
		tempFilters[0] = SPAN_FILTER;
		editable.setFilters(tempFilters);
		try {
			return super.onTextContextMenuItem(id);
		} finally {
			editable.setFilters(filters);
		}
	} else {
		return super.onTextContextMenuItem(id);
	}
}
 

/**
 * 
 * @param bitmap
 * @param filePath
 * @param start
 * @param end
 */
public void addImage(Bitmap bitmap, String filePath,int start,int end) {
	Log.i("imgpath", filePath);
	String pathTag = "<img src=\"" + filePath + "\"/>";
	SpannableString spanString = new SpannableString(pathTag);
	// 获取屏幕的宽高
	int paddingLeft = getPaddingLeft();
	int paddingRight = getPaddingRight();
	int bmWidth = bitmap.getWidth();//图片高度
	int bmHeight = bitmap.getHeight();//图片宽度
	int zoomWidth =  getWidth() - (paddingLeft + paddingRight);
	int zoomHeight = (int) (((float)zoomWidth / (float)bmWidth) * bmHeight);
	Bitmap newBitmap = zoomImage(bitmap, zoomWidth,zoomHeight);
	ImageSpan imgSpan = new ImageSpan(mContext, newBitmap);
	spanString.setSpan(imgSpan, 0, pathTag.length(),
			Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
	Editable editable = this.getText(); // 获取edittext内容
	editable.delete(start, end);//删除
	editable.insert(start, spanString); // 设置spanString要添加的位置
}
 

@Override
public void afterTextChanged(Editable editable) {
    searchString = editable.toString().trim();

    if (searchString != null && searchString.length() > 0) {
        new SearchQuestionTask(context, new SearchQuestionTask.Callback() {
            @Override
            public void onPreExecute() {
                // ...
            }

            @Override
            public void onPostExecute(ArrayList<Question> result) {
                searchedQuestions.clear();
                searchedQuestions.addAll(result);
                if (questionsAdapter != null) {
                    questionsAdapter.notifyDataSetChanged();
                }
            }
        }).execute(searchString);
    }
}
 

@Override
public boolean onKeyDown(View view, Editable content, int keyCode, KeyEvent event) {
    switch (keyCode) {
    
    case KeyEvent.KEYCODE_ENTER:
        TextKeyListener.clear(content);
        mHidPayload.assemblePayload(HidKeyPair.ENTER);
        mSocketManager.sendPayload(mHidPayload);
        return true;
    case KeyEvent.KEYCODE_DEL:
    	mHidPayload.assemblePayload(HidKeyPair.DEL);
        mSocketManager.sendPayload(mHidPayload);
    case KeyEvent.KEYCODE_VOLUME_UP:
    case KeyEvent.KEYCODE_VOLUME_DOWN:
        mHidPayload.assemblePayload(keyCode);
        mSocketManager.sendPayload(mHidPayload);
    default:
        return mTextKeyListener.onKeyDown(view, content, keyCode, event);
    }
}
 

@Override
public void sendText(@NotNull String txt) {
    if (isEmpty(txt)) return;
    View view = getWindow().getDecorView().findFocus();
    if (view instanceof EditText) {
        EditText editText = (EditText) view;
        int start = editText.getSelectionStart();
        int end = editText.getSelectionEnd();
        Editable edit = editText.getEditableText();//获取EditText的文字
        if (start < 0 || start >= edit.length()) {
            edit.append(txt);
        } else {
            edit.replace(start, end, txt);//光标所在位置插入文字
        }
    }
}
 

/**
 * 追加内容
 * @param editText {@link EditText}
 * @param content  文本内容
 * @param start    开始添加的位置
 * @param isSelect 是否设置光标
 * @param <T>      泛型
 * @return {@link EditText}
 */
public static <T extends EditText> T insert(final T editText, final CharSequence content, final int start, final boolean isSelect) {
    if (editText != null && !TextUtils.isEmpty(content)) {
        try {
            Editable editable = editText.getText();
            // 在指定位置 追加内容
            editable.insert(start, content);
            // 设置光标
            if (isSelect) {
                editText.setSelection(editText.getText().toString().length());
            }
        } catch (Exception e) {
            LogPrintUtils.eTag(TAG, e, "insert");
        }
    }
    return editText;
}
 

/**
 * The default implementation returns the text currently selected, or null if none is
 * selected.
 */
public CharSequence getSelectedText(int flags) {
    final Editable content = getEditable();
    if (content == null) return null;

    int a = Selection.getSelectionStart(content);
    int b = Selection.getSelectionEnd(content);

    if (a > b) {
        int tmp = a;
        a = b;
        b = tmp;
    }

    if (a == b || a < 0) return null;

    if ((flags&GET_TEXT_WITH_STYLES) != 0) {
        return content.subSequence(a, b);
    }
    return TextUtils.substring(content, a, b);
}
 

private void initKeyboard() {
    mKeyboardView.setOnKeyboardActionListener(new PinKeyboardView.PinPadActionListener() {
        @Override
        public void onKey(int primaryCode, int[] keyCodes) {
            Editable e = mPinputView.getText();
            if (primaryCode == PinKeyboardView.KEYCODE_DELETE) {
                int len = e.length();
                if (len == 0) {
                    return;
                }
                e.delete(len - 1, e.length());
            } else {
                mPinputView.getText().append((char) primaryCode);
            }
        }
    });
    mKeyboardView.setOnTouchListener(new OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            if (event.getAction() == ACTION_DOWN && getConfig().shouldVibrateOnKey()) {
                VibrationHelper.vibrate(mContext, getConfig().vibrateDuration());
            }
            return false;
        }
    });
}
 

private static void startBlockElement(Editable text, Attributes attributes, int margin) {
    final int len = text.length();
    if (margin > 0) {
        appendNewlines(text, margin);
        start(text, new Newline(margin));
    }
    String style = attributes.getValue("", "style");
    if (style != null) {
        Matcher m = getTextAlignPattern().matcher(style);
        if (m.find()) {
            String alignment = m.group(1);
            if (alignment.equalsIgnoreCase("start")) {
                start(text, new Alignment(Layout.Alignment.ALIGN_NORMAL));
            } else if (alignment.equalsIgnoreCase("center")) {
                start(text, new Alignment(Layout.Alignment.ALIGN_CENTER));
            } else if (alignment.equalsIgnoreCase("end")) {
                start(text, new Alignment(Layout.Alignment.ALIGN_OPPOSITE));
            }
        }
    }
}
 

/**
 * Handles pasting a {@link ClipData} to this {@link TextChipsEditView}.
 */
private void handlePasteClip(ClipData clip) {
    removeTextChangedListener(mTextWatcher);

    if (clip != null && clip.getDescription().hasMimeType(ClipDescription.MIMETYPE_TEXT_PLAIN)) {
        for (int i = 0; i < clip.getItemCount(); i++) {
            CharSequence paste = clip.getItemAt(i).getText();
            if (paste != null) {
                int start = getSelectionStart();
                int end = getSelectionEnd();
                Editable editable = getText();
                if (start >= 0 && end >= 0 && start != end) {
                    editable.append(paste, start, end);
                } else {
                    editable.insert(end, paste);
                }
                handlePasteAndReplace();
            }
        }
    }

    mHandler.post(mAddTextWatcher);
}
 

/**
 * Get last marked position of a specific tag kind (private class)
 */
private static Object getLast(Editable text, Class kind) {
    Object[] objs = text.getSpans(0, text.length(), kind);
    if (objs.length == 0) {
        return null;
    } else {
        for (int i = objs.length; i > 0; i--) {
            if (text.getSpanFlags(objs[i - 1]) == Spannable.SPAN_MARK_MARK) {
                return objs[i - 1];
            }
        }
        return null;
    }
}
 

private static void endBlockElement(Editable text) {
    Newline n = getLast(text, Newline.class);
    if (n != null) {
        appendNewlines(text, n.mNumNewlines);
        text.removeSpan(n);
    }
    Alignment a = getLast(text, Alignment.class);
    if (a != null) {
        setSpanFromMark(text, a, new AlignmentSpan.Standard(a.mAlignment));
    }
}
 

@Override
public void afterTextChanged(Editable s) {
    if (old != null) {
        if (old.isInvalid())
            old = null;
        else if (!shouldReplace(old.from, old.size, old.toChange)) {
            selfChangingText = true;
            s.replace(old.from, old.from + old.toChange.length(), old.oldText, old.from, old.from + old.size);
            old = null;
        } else {
            old = null;
            didChange();
        }
    }
}
 

@Override
public void afterTextChanged(Editable s) {
    if (s.length() == 0) {
        mTextInputDialog.setDescription("");
        return;
    }
    try {
        JosmCoordinatesParser.Result result = JosmCoordinatesParser.parseWithResult(s.toString());
        s.setSpan(
                new ForegroundColorSpan(mColorDarkBlue),
                0,
                result.offset,
                Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        s.setSpan(
                new ForegroundColorSpan(mColorTextPrimary),
                result.offset,
                s.length(),
                Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        mTextInputDialog.setDescription(StringFormatter.coordinates(" ", result.coordinates.getLatitude(), result.coordinates.getLongitude()));
    } catch (IllegalArgumentException e) {
        s.setSpan(
                new ForegroundColorSpan(mColorRed),
                0,
                s.length(),
                Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        mTextInputDialog.setDescription("");
    }
}
 

@Override
public final void afterTextChanged(Editable s) {
    if (flag) return;
    if (s != editable) {
        editable = s;
        onEditableChanged(s);
    }
    PreformEdit.this.onTextChanged(s);
}
 

/**
 * Validates column index lol
 *
 * @param editable
 * @param view
 */
private void validateColumnIndex(Editable editable, TextInputEditText view) {
    if (!Validator.validateColumnIndex(editable.toString())) {
        view.setError(getString(R.string.error_column_index));
    } else {
        view.setError(null);
    }
}
 

private void update(Editable messageText) {
    int messageLength = messageText.length();

    // is there unicode character in the message?
    boolean unicode = false;
    for (int i = 0; i < messageLength; i++) {
        char c = messageText.charAt(i);
        if (Character.UnicodeBlock.of(c) != Character.UnicodeBlock.BASIC_LATIN) {
            unicode = true;
            break;
        }
    }

    // get max length of sms part depending on encoding and full length
    int length1 = (unicode ? SMS_LENGTH_UNICODE : SMS_LENGTH);
    int length2 = (unicode ? SMS_LENGTH2_UNICODE : SMS_LENGTH2);
    int partMaxLength = (messageLength > length1 ? length2 : length1);
    // create current length status info
    int partsNumber = messageLength / partMaxLength + 1;
    int partLength = partMaxLength - messageLength % partMaxLength;
    // correct length info for second part
    if (partsNumber == 2 && partLength == partMaxLength) {
        partLength = length1 - (length1 - length2) * 2;
    }

    // show current length status info
    String counterText = "" + partLength + "/" + partsNumber;
    counterTextView.setText(counterText);
}
 

public static EmoticonClickListener getCommonEmoticonClickListener(final EditText editText) {
        return new EmoticonClickListener() {
            @Override
            public void onEmoticonClick(Object o, int actionType, boolean isDelBtn) {
                if (isDelBtn) {
                    SimpleCommonUtils.delClick(editText);
                } else {
                    if (o == null) {
                        return;
                    }
                    if (actionType == Constants.EMOTICON_CLICK_TEXT) {
                        String content = null;
//                        if (o instanceof EmojiBean) {
//                            content = ((EmojiBean) o).emoji;
//                        } else
                            if (o instanceof EmoticonEntity) {
                            content = ((EmoticonEntity) o).getContent();
                        }

                        if (TextUtils.isEmpty(content)) {
                            return;
                        }
                        int index = editText.getSelectionStart();
                        Editable editable = editText.getText();
                        editable.insert(index, content);
                    }
                }
            }
        };
    }
 

@Override
public void afterTextChanged(Editable s) {
	if (s.length() == 0) {
		showErrorToolTip(mEmailErrorTooltip,
				getString(R.string.message_account_email_invalid));
	} else {
		mEmailErrorTooltip.setVisibility(View.GONE);
	}
}
 

/**
 * Get the list of Tokens
 *
 * @return List of tokens
 */
public List<T> getObjects() {
    ArrayList<T>objects = new ArrayList<>();
    Editable text = getText();
    if (hiddenContent != null) {
        text = hiddenContent;
    }
    for (TokenImageSpan span: text.getSpans(0, text.length(), TokenImageSpan.class)) {
        objects.add(span.getToken());
    }
    return objects;
}
 

private char[] getDigitArray(final Editable s, final int size) {
    char[] digits = new char[size];
    int index = 0;
    for (int i = 0; i < s.length() && index < size; i++) {
        char current = s.charAt(i);
        if (Character.isDigit(current)) {
            digits[index] = current;
            index++;
        }
    }
    return digits;
}
 

/**
 * Perform undo.
 */
public void undo() {
    EditItem edit = mEditHistory.getPrevious();
    if (edit == null) {
        return;
    }

    Editable text = getEditableText();
    int start = edit.mmStart;
    int end = start + (edit.mmAfter != null
            ? edit.mmAfter.length() : 0);

    mIsUndoOrRedo = true;
    text.replace(start, end, edit.mmBefore);
    mIsUndoOrRedo = false;

    // This will get rid of underlines inserted when editor tries to come
    // up with a suggestion.
    for (Object o : text.getSpans(0,
            text.length(), UnderlineSpan.class)) {
        text.removeSpan(o);
    }

    Selection.setSelection(text,
            edit.mmBefore == null ? start
                    : (start + edit.mmBefore.length()));
}
 

@Override
        public void onEmoticonClick(Object o, int actionType, boolean isDelBtn) {

            if (isDelBtn) {
                SimpleCommonUtils.delClick(ekBar.getEtChat());
            } else {
                if (o == null) {
                    return;
                }
                if (actionType == Constants.EMOTICON_CLICK_BIGIMAGE) {
                    if (o instanceof EmoticonEntity) {
                        OnSendImage(((EmoticonEntity) o).getIconUri());
                    }
                } else {
                    String content = null;
//                    Emoji
//                    EmojiDisplay.
//                    if (o instanceof EmojiBean) {
//                        content = ((EmojiBean) o).emoji;
//                    } else
                        if (o instanceof EmoticonEntity) {
                        content = ((EmoticonEntity) o).getContent();
                    }

                    if (TextUtils.isEmpty(content)) {
                        return;
                    }
                    int index = ekBar.getEtChat().getSelectionStart();
                    Editable editable = ekBar.getEtChat().getText();
                    editable.insert(index, content);
                }
            }
        }
 

@Override
public void afterTextChanged(Editable s) {
    // TODO Auto-generated method stub
    String charSequence = mEditText.getText().toString();
    int count = Utility.length(charSequence);
    String text = count <= 0 ? getString(R.string.send_weibo) : count + "";
    weiTextCountTV.setText(text);
    if (count > 140) {
        weiTextCountTV.setTextColor(Color.RED);
    } else {
        weiTextCountTV.setTextColor(Color.BLACK);
    }
}
 

@Override
public Editable getText() {
    CharSequence text = super.getText();
    // This can only happen during construction.
    if (text == null) {
        return null;
    }
    if (text instanceof Editable) {
        return (Editable) super.getText();
    }
    super.setText(text, BufferType.EDITABLE);
    return (Editable) super.getText();
}
 

@Override
public void afterTextChanged(Editable s) {
    try {
        String string = s.toString();
        if (!TextUtils.isEmpty(string)) {
            saveNumber(getActivity(), Integer.parseInt(string));
        }
    } catch (NumberFormatException e) {
        Toast.makeText(getActivity(), "Not an integer!", Toast.LENGTH_SHORT).show();
    }
}
 

/**
 * Helper function to remove all spans of a certain type from an {@link Editable}.
 */
private <T> void removeSpans(Editable text, Class<T> clazz) {
    T[] spans = text.getSpans(0, text.length(), clazz);
    for (T span : spans) {
        text.removeSpan(span);
    }
}
 

@Override
public void afterTextChanged(Editable s) {
    boolean result = updateNodeProperty(key, s.toString(), node);
    if (!result) {
        infoText.setText(R.string.node__invalid_param);
    } else {
        infoText.setText("");
    }
}
 

@Override
public void afterTextChanged(Editable s) {
    if (!_hasCustomIcon) {
        TextDrawable drawable = TextDrawableHelper.generate(_textIssuer.getText().toString(), _textName.getText().toString(), _iconView);
        _iconView.setImageDrawable(drawable);
    }
}