問題描述

當(dāng)用戶在 EditText 中輸入信息，并移動(dòng)到下一個(gè) EditText 時(shí)，信息會(huì)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(duì)如何將背景顏色僅應(yīng)用于文本(而不是整個(gè) 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(shí)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(gè) 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(gè)視圖)的文章就介紹到這了，希望我們推薦的答案對(duì)大家有所幫助，也希望大家多多支持html5模板網(wǎng)！