我可以为每个文本行我附加到一个TextView颜色？

本文介绍了我可以为每个文本行我附加到一个TextView颜色？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个TextView被用作蓝牙连接控制台。当我发送一个命令，我希望它被写在一个颜色（例如青色），并以不同的颜色接收（例如红色）的答案。

I have a TextView to be used as a bluetooth connection console. When I send a command, I want it to be written in a color (for example cyan), and the answers received in a different color (for example red).

是否有可能做到这一点，如果是的话，怎么办？

Is it possible to do that, and if so, how?

我读它可能会使用HTML做的，但我不能肯定这是最好的方法，甚至是如何做到这一点。

I read it may be possible to do using HTML, but i'm not quite sure it is the best approach, or even how to do it.

推荐答案

你真的需要它是一个TextView，也可以使用一个ListView来代替，并在列表中添加一个新行的每一个命令/回答？

Do you really need it to be a TextView or can you use a ListView instead and add a new row in the list for each command/answer?

如果您的真正的想用一个TextView，你可以做这样的事情（这是你可以复制并粘贴到你的应用程序尝试的工作示例）：

If you really want to use a TextView you can do something like this (This is a working example you can just copy and paste to your app to try out):

package com.c0deattack; import android.app.Activity; import android.graphics.Color; import android.os.Bundle; import android.text.Spannable; import android.text.style.ForegroundColorSpan; import android.widget.LinearLayout; import android.widget.TextView; public class MultipleColoursInOneTextViewActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); TextView tv = new TextView(this); String command = "This is a command"; String response = "\nThis is a response"; tv.append(command + response); Spannable spannableText = (Spannable) tv.getText(); spannableText.setSpan(new ForegroundColorSpan(Color.GREEN), 0, command.length(), 0); spannableText.setSpan(new ForegroundColorSpan(Color.RED), command.length(), command.length() + response.length(), 0); LinearLayout layout = new LinearLayout(this); layout.addView(tv); setContentView(layout); } }

所以这表明，这是可以做到的，但你会明显地发现，你必须设置换行符自己，锻炼，每个命令/响应的开始和结束，因此您可以应用正确的颜色吧。这并不难，但对我来说，感觉笨拙。

So that shows that it can be done, but you'll obviously notice you'll have to set the line breaks yourself and workout where each command/answer starts and ends so you can apply the correct colour to it. It's not that hard but to me, feels clunky.