自定义textwatcher，在swiftkey中滞后但在库存键盘中没有

Question

我需要一个可以添加数千个分隔符的textwatcher，所以我发现了这个：

package utils;

import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;

import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
import java.text.ParseException;
import java.util.Locale;

/**
 * Created by Robby on 4/07/2014.
 */
public class NumberTextWatcher implements TextWatcher {

    @SuppressWarnings("unused")
    private static final String TAG = "NumberTextWatcher";
    private final TextView currencyIndicator;
    private DecimalFormat df;
    private DecimalFormat dfnd;
    private boolean hasFractionalPart;
    private EditText et;


    public NumberTextWatcher(TextView currencyIndicator, EditText et) {
        DecimalFormatSymbols otherSymbols = new DecimalFormatSymbols(Locale.GERMANY);
        otherSymbols.setDecimalSeparator(',');
        otherSymbols.setGroupingSeparator('.');

        df = new DecimalFormat("#,###.##", otherSymbols);
        df.setDecimalSeparatorAlwaysShown(true);
        dfnd = new DecimalFormat("#,###", otherSymbols);
        this.et = et;
        hasFractionalPart = false;
        this.currencyIndicator = currencyIndicator;
    }

    public void afterTextChanged(Editable s) {
        et.removeTextChangedListener(this);

        if (s != null && s.length() > 0) {
            currencyIndicator.setVisibility(View.VISIBLE);
        } else {
            currencyIndicator.setVisibility(View.GONE);
        }

        try {
            int inilen, endlen;
            inilen = et.getText().length();
            String v = s.toString().replace(String.valueOf(df.getDecimalFormatSymbols().getGroupingSeparator()), "");
            Number n = df.parse(v);
            int cp = et.getSelectionStart();
            if (hasFractionalPart) {
                et.setText(df.format(n));
            } else {
                et.setText(dfnd.format(n));
            }
            endlen = et.getText().length();
            int sel = (cp + (endlen - inilen));
            if (sel > 0 && sel <= et.getText().length()) {
                et.setSelection(sel);
            } else {
                // place cursor at the end?
                et.setSelection(et.getText().length() - 1);
            }
        } catch (NumberFormatException nfe) {
            // do nothing?
        } catch (ParseException e) {
            // do nothing?
        }

        et.addTextChangedListener(this);
    }

    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
    }

    public void onTextChanged(CharSequence s, int start, int before, int count) {
        if (s.toString().contains(String.valueOf(df.getDecimalFormatSymbols().getDecimalSeparator()))) {
            hasFractionalPart = true;
        } else {
            hasFractionalPart = false;
        }
    }
}

因此，当我输入100000时，它将edittext设置为100.000等...
当我注释掉afterTextChanged块时，它非常流畅，所以它必须是那里导致swiftkey应用程序滞后的东西。

有更有效的方法吗？或者这只是一个我不应该注意的swiftkey中的错误？

在股票键盘上，我没有任何延迟。