Question

我希望当edittext中的类型编号显示波斯语或阿拉伯语编号而不是英文编号时，＆＃34;它与方法settext（）配合良好但在我打字时无效。＆＃34; < /强> 我使用此代码显示波斯语数字，TextView和Button工作正常，但在输入时无法在EditText中工作！

public class FormatHelper { private static String[] persianNumbers = new String[]{"۰", "۱", "۲", "۳", "۴", "۵", "۶", "۷", "۸", "۹"}; public static String toPersianNumber(String text) { if (text.isEmpty()) return ""; String out = ""; int length = text.length(); for (int i = 0; i < length; i++) { char c = text.charAt(i); if ('0' <= c && c <= '9') { int number = Integer.parseInt(String.valueOf(c)); out += persianNumbers[number]; } else if (c == '٫') { out += '،'; } else { out += c; } } return out; }

}

public class LoginActivity extends AppCompatActivity { myEditText myEditText; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.login_page); myEditText = findViewById(R.id.user_pnumber); myEditText.addTextChangedListener(new TextWatcher() { @Override public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) { } @Override public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) { String s = FormatHelper.toPersianNumber(charSequence.toString()); Toast.makeText(LoginActivity.this, s, Toast.LENGTH_SHORT).show(); myEditText.setText(s); } @Override public void afterTextChanged(Editable editable) { } }); }

我认为必须使用addTextChangedListener

更新我收到强制关闭app的错误：

FATAL EXCEPTION: main java.lang.StackOverflowError at android.text.SpannableStringBuilder.getTextRunAdvances(SpannableStringBuilder.java:1212) at android.graphics.Paint.getTextRunAdvances(Paint.java:2100) at android.graphics.Paint.getTextRunAdvances(Paint.java:2064) at android.text.TextLine.handleText(TextLine.java:969) at android.text.TextLine.handleRun(TextLine.java:1178) at android.text.TextLine.measureRun(TextLine.java:617) at android.text.TextLine.measure(TextLine.java:480) at android.text.TextLine.metrics(TextLine.java:454) at android.text.Layout.getLineExtent(Layout.java:993) at android.text.Layout.getLineStartPos(Layout.java:519) at android.text.Layout.getHorizontal(Layout.java:856) at android.text.Layout.getHorizontal(Layout.java:827) at android.text.Layout.getPrimaryHorizontal(Layout.java:811) at android.widget.TextView.getFocusedRect(TextView.java:5834) at android.view.FocusFinder.findNextFocus(FocusFinder.java:120) at android.view.FocusFinder.findNextFocus(FocusFinder.java:94) at android.view.FocusFinder.findNextFocus(FocusFinder.java:65) at android.view.ViewGroup.focusSearch(ViewGroup.java:681) at android.view.ViewGroup.focusSearch(ViewGroup.java:683) at android.view.ViewGroup.focusSearch(ViewGroup.java:683) at android.view.ViewGroup.focusSearch(ViewGroup.java:683) at android.view.ViewGroup.focusSearch(ViewGroup.java:683) at android.view.ViewGroup.focusSearch(ViewGroup.java:683) at android.view.ViewGroup.focusSearch(ViewGroup.java:683) at android.view.View.focusSearch(View.java:6547) at android.widget.TextView.onCreateInputConnection(TextView.java:6489) at android.view.inputmethod.InputMethodManager.startInputInner(InputMethodManager.java:1213) at android.view.inputmethod.InputMethodManager.restartInput(InputMethodManager.java:1164) at android.widget.TextView.setText(TextView.java:4231) at android.widget.TextView.setText(TextView.java:4148) at android.widget.EditText.setText(EditText.java:104) at android.widget.TextView.setText(TextView.java:4123) at LoginActivity$2.onTextChanged(LoginActivity.java:76) at android.widget.TextView.sendOnTextChanged(TextView.java:8284) at android.widget.TextView.setText(TextView.java:4314) at android.widget.TextView.setText(TextView.java:4148) at android.widget.EditText.setText(EditText.java:104) at android.widget.TextView.setText(TextView.java:4123)

Answer 1

使用此代码

好的，你需要像et_change

这样的全局变量

import React from 'react';
import MaskedInput from 'react-text-mask';
import PropTypes from 'prop-types';
import { withStyles } from 'material-ui/styles';
import TextField from 'material-ui/TextField';

const styles = theme => ({
  container: {
    display: 'flex',
    flexWrap: 'wrap',
  },
  input: {
    margin: theme.spacing.unit,
  },
});

const TextMaskCustom = (props) => {
  const { inputRef, ...other } = props;

  return (
    <MaskedInput
      {...other}
      ref={inputRef}
      mask={['(', /[1-9]/, /\d/, /\d/, ')', ' ', /\d/, /\d/, /\d/, '-', /\d/, /\d/, /\d/, /\d/]}
      placeholderChar={'\u2000'}
      showMask
    />
  );
}

TextMaskCustom.propTypes = {
  inputRef: PropTypes.func.isRequired,
};

class FormattedInputs extends React.Component {
  state = {
    textmask: '(1  )    -    ',
  };

  handleChange = name => event => {
    this.setState({
      [name]: event.target.value,
    });
  };

  render() {
    const { classes } = this.props;
    return (
      <div className={classes.container}>
        <TextField
          id="maskExample"
          label="Mask Example"
          className={classes.textField}
          margin="normal"
          InputProps={{
            inputComponent: TextMaskCustom,
            value:this.state.textmask,
            onChange: this.handleChange('textmask'),
          }}
        />
      </div>
    );
  }
}

FormattedInputs.propTypes = {
  classes: PropTypes.object.isRequired,
};

export default withStyles(styles)(FormattedInputs);

并在TextWatcher中使用它，如下所示

 private boolean et_change = false;

希望它可以帮到你

Answer 2

出现异常是因为您在onTextChanged事件中设置了文本。这会再次触发事件本身，而这个新事件会无限制地触发它。

我建议您使用某种布尔条件来仅触发事件一次。

Answer 3

您只需要使用支持“波斯数字”的波斯字体查看即可。例如，使用shabnam_fd字体作为styles.xml文件中的字体系列：

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
    <item name="drawerArrowStyle">@style/DrawerIcon</item>
    <item name="android:fontFamily">@font/shabnam_fd</item>
</style>

然后在字体文件夹中添加shabnam_fd.ttf字体。

当我打字时，edittext中的波斯数不起作用

3 个答案: