Android-如何用另一个字符串替换一个字符串的一部分？

我有字符串与一些数字和英语单词，我需要翻译他们到我的母语，找到他们，取代他们的本地化版本这个单词。你知道如何轻松地在字符串中替换单词吗？

谢谢

编辑:

我试过了(字符串“ to”的一部分应该由“ xyz”替换) :

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

但是没有用。

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最佳答案

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:

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

or

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

API Docs

public String replace (CharSequence target, CharSequence replacement)

Since: API Level 1

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

Parameters

  • target the sequence to replace.
  • replacement the replacement sequence.

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

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You're doing only one mistake.

use replaceAll() function over there.

e.g. 

String str = "Hi";
String str1 = "hello";
str.replaceAll( str, str1 );
小开 
String str = "to";
str.replace("to", "xyz");

Just try it :)

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MAY BE INTERESTING TO YOU:

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

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

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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 ..

Im using a EditText as an example

// GIVE TARGET TEXT BOX A NAME

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

// STRING TO REPLACE 

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

// REPLACE STRINGS WITH RETURNED STRINGS

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

// USE RETURNED STRINGS TO REPLACE NEW STRING INSIDE TEXTBOX 

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() !

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

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In kotlin there is no replaceAll, so I created this loop to replace repeated values ​​in a string or any variable.

 var someValue = "https://www.google.com.br/"
while (someValue.contains(".")) {
someValue = someValue.replace(".", "")
}
Log.d("newValue :", someValue)
// in that case the stitches have been removed
//https://wwwgooglecombr/

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