Android - 如何用另一个字符串替换部分字符串？

I have strings with some numbers and english words and I need to translate them to my mother tongue by finding them and replacing them by locallized version of this word. Do you know how to easily achieve replacing words in a string?

我有一些带有一些数字和英文单词的字符串，我需要将它们翻译成我的母语，找到它们并用这个单词的locallized版本替换它们。你知道如何轻松地替换字符串中的单词吗？

Thanks

谢谢

Edit:

编辑：

I have tried (part of a string "to" should be replaced by "xyz"):

我试过（字符串“to”的一部分应该用“xyz”代替）：

string.replace("to", "xyz")

But it is not working...

但它不起作用......

5 个解决方案

#1

164

It is working, but it wont modify the caller object, but returning a new String.
So you just need to assign it to a new String variable, or to itself:

它正在工作，但它不会修改调用者对象，而是返回一个新的String。所以你只需要将它分配给一个新的String变量，或者它自己：

string = string.replace("to", "xyz");

要么

String newString = string.replace("to", "xyz");

API Docs

API文档

public String replace (CharSequence target, CharSequence replacement)

Since: API Level 1

自：API级别1

Copies this string replacing occurrences of the specified target sequence with another sequence. The string is processed from the beginning to the end.

复制此字符串，将指定目标序列的出现次数替换为另一个序列。字符串从头到尾处理。

Parameters

参数

target the sequence to replace.
定位要替换的序列。
replacement the replacement sequence.
更换更换顺序。

Returns the resulting string.
Throws NullPointerException if target or replacement is null.

返回结果字符串。如果target或replacement为null，则抛出NullPointerException。

#2

String str = "to";
str.replace("to", "xyz");

Just try it :)

去尝试一下：）

#3

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可能对你有兴趣：

In java, string objects are immutable. Immutable simply means unmodifiable or unchangeable.

在java中，字符串对象是不可变的。永恒只是意味着不可修改或不可改变。

Once string object is created its data or state can't be changed but a new string object is created.

创建字符串对象后，无法更改其数据或状态，但会创建新的字符串对象。

#4

-2

You're doing only one mistake.

你只犯了一个错误。

use replaceAll() function over there.

在那里使用replaceAll（）函数。

e.g.

例如

String str = "Hi";
String str1 = "hello";
str.replaceAll( str, str1 );

#5

-2

rekaszeru

I noticed that you commented in 2011 but i thought i should post this answer anyway, in case anyone needs to "replace the original string" and runs into this answer ..

我注意到你在2011年发表评论，但我认为无论如何我应该发布这个答案，万一有人需要“替换原来的字符串”并遇到这个答案..

Im using a EditText as an example

我使用EditText作为示例

// GIVE TARGET TEXT BOX A NAME

//给目标文本框一个名字

 EditText textbox = (EditText) findViewById(R.id.your_textboxID);

// STRING TO REPLACE

// STRING替换

 String oldText = "hello"
 String newText = "Hi";      
 String textBoxText = textbox.getText().toString();

// REPLACE STRINGS WITH RETURNED STRINGS

//用返回的字符串替换字符串

String returnedString = textBoxText.replace( oldText, newText );

// USE RETURNED STRINGS TO REPLACE NEW STRING INSIDE TEXTBOX

//使用返回的字符串替换TEXTBOX中的新字符串

textbox.setText(returnedString);

This is untested, but it's just an example of using the returned string to replace the original layouts string with setText() !

这是未经测试的，但它只是使用返回的字符串用setText（）替换原始布局字符串的示例！

Obviously this example requires that you have a EditText with the ID set to your_textboxID

显然，此示例要求您具有ID为your_textboxID的EditText

#1

164