問題描述

目前我正在開發 Spelling &語法檢查應用程序.它有 EditText 用戶可以在其中輸入文本和單擊按鈕應用程序時，一個名為檢查文本"的按鈕將調用 LanguageTool API 來檢查文本和返回帶有結果的 JSON 響應.

Currently I'm developing Spelling & Grammar checking app. It has EditText where user can input text & one button called "Check Text " upon click on button app will call LanguageTool API to check text & returns JSON response with result .

這是應用程序的屏幕截圖:

Here is screenshot of app :

這是我迄今為止嘗試突出顯示多個單詞的代碼，但此代碼僅突出顯示我創建的數組中的最后一個單詞:

Here is code which I have tried so far for highlighting multiple words but this code only highlights last word from array which I have created:

for (int i = 0; i < errorStrings.size(); i++) {

// Here textToCheck is EditText & errorStrings is ArrayList of type WrongString class which i have created to hold Error string , offset & length.

Spannable wordtoSpan = new SpannableString(texttoSend);
wordtoSpan.setSpan(new BackgroundColorSpan(Color.BLUE),errorStrings.get(i).getOffset(),
                                        (errorStrings.get(i).getOffset()+errorStrings.get(i).getLength()), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                            textToCheck.setText(wordtoSpan);
}

推薦答案

我寫了一個簡單的方法，可以讓你傳遞TextView(或子類Button、Edittext 等).

I have wrote a simple method that allow you pass TextView (or child classes Button, Edittext etc.).

1.如果您想突出顯示段落中查找單詞中的文本.您可以使用以下方法.

setHighLightedText(yourTextView_Edittext_Button, "a");

這會給你這樣的結果.

    /**
     * use this method to highlight a text in TextView
     * @param tv TextView or Edittext or Button or child of TextView class
     * @param textToHighlight Text to highlight
     */
    public void setHighLightedText(TextView tv, String textToHighlight) {
        String tvt = tv.getText().toString();
        int ofe = tvt.indexOf(textToHighlight, 0);
        Spannable wordToSpan = new SpannableString(tv.getText());
        for (int ofs = 0; ofs < tvt.length() && ofe != -1; ofs = ofe + 1) {
            ofe = tvt.indexOf(textToHighlight, ofs);
            if (ofe == -1)
                break;
            else {
                wordToSpan.setSpan(new BackgroundColorSpan(0xFFFFFF00), ofe, ofe + textToHighlight.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                tv.setText(wordToSpan, TextView.BufferType.SPANNABLE);
            }
        }
    }

<強>2.如果您想制作可點擊的突出顯示文本(例如單擊條款和條件文本)，請使用以下代碼:

 setClickableHighLightedText(yourTextView_Edittext_Button, "go to settings", new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            // TODO: do your stuff here 
        }
    });

這會給你這樣的結果

/**
 * use this method to set clickable highlighted a text in TextView
 *
 * @param tv              TextView or Edittext or Button or child of TextView class
 * @param textToHighlight Text to highlight
 */
public void setClickableHighLightedText(TextView tv, String textToHighlight, View.OnClickListener onClickListener) {
    String tvt = tv.getText().toString();
    int ofe = tvt.indexOf(textToHighlight, 0);
    ClickableSpan clickableSpan = new ClickableSpan() {
        @Override
        public void onClick(View textView) {
            if (onClickListener != null) onClickListener.onClick(textView);
        }

        @Override
        public void updateDrawState(TextPaint ds) {
            super.updateDrawState(ds);
            ds.setColor(0xff0000ff);
            ds.setUnderlineText(true);
        }
    };
    SpannableString wordToSpan = new SpannableString(tv.getText());
    for (int ofs = 0; ofs < tvt.length() && ofe != -1; ofs = ofe + 1) {
        ofe = tvt.indexOf(textToHighlight, ofs);
        if (ofe == -1)
            break;
        else {
            wordToSpan.setSpan(clickableSpan, ofe, ofe + textToHighlight.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
            tv.setText(wordToSpan, TextView.BufferType.SPANNABLE);
            tv.setMovementMethod(LinkMovementMethod.getInstance());
        }
    }
}

這是一種解決方法，您可以根據需要自定義跨度.一些很好的教程 Android 文本樣式 和 另一個

This is a workaround, you can customise spans according to your need. Some good tutorials Android text styles and one other

這篇關于如何在 EditText 中突出顯示多個單詞?的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！