問題描述

當(dāng)用戶在 EditText 中輸入信息，并移動到下一個 EditText 時，信息會高亮顯示，如下所示:

When a user enters information in an EditText, and moves to the next EditText, the information is highlighted as shown below:

代碼:

edittext.setOnFocusChangeListener(new OnFocusChangeListener() {

@Override
public void onFocusChange(View v, boolean hasFocus) {
    if (hasFocus) {
        v.setBackgroundColor(Color.WHITE);
        ((EditText) v).setTextColor(Color.BLACK);
    } else {

        //v.setBackgroundColor(Color.LTGRAY); //also works like this
        ((EditText) v).setBackgroundColor(Color.LTGRAY);
        ((EditText) v).setTextColor(Color.BLACK);
    }

   }
});

在 onCreate 方法中調(diào)用如下:

Which is called in the onCreate method like this:

edittext = (EditText) findViewById(R.id.editText1);

但是，如果背景顏色只應(yīng)用于文本本身而不是視圖，那就更好了，就像這樣(來自 gmail 應(yīng)用程序):

However, It would be much better if the background color only applied to the text itself, rather than the view, like this (from the gmail app):

是否有人對如何將背景顏色僅應(yīng)用于文本(而不是整個 EditText 視圖)有任何建議?

Does anybody have any suggestions on how to apply the background color to the text only (not the whole EditText view) as above?

謝謝.

推薦答案

您可以使用 BackgroundColorSpan 來實現(xiàn)您想要的.您可以在此處找到更多信息:

You can achieve what you want by using a BackgroundColorSpan. You can find more information here:

http://developer.android.com/reference/android/text/style/BackgroundColorSpan.html

要使用 span，您需要構(gòu)建一個 SpannableString，您可以使用 SpannableStringBuilder:

To use spans you need to build a SpannableString which you can do using a SpannableStringBuilder:

http://developer.android.com/reference/android/text/SpannableStringBuilder.html

這篇關(guān)于EditText - 更改文本的背景顏色(只有文本 - 不是整個視圖)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(wǎng)！