問題描述
我試圖用 asterisk (*) 符號代替 EditText 中的點，其中 inputType 為 textPassword.我遇到了要求使用 setTransformationMethod() 并實現 PasswordTransformationMethod 的帖子.但是我需要實現該類的哪個方法以及如何顯示星號?還有其他方法嗎?
I am trying to show in asterisk (*) symbol in place of dots in EditText having inputType as textPassword. I came across post that ask to use setTransformationMethod() and implement PasswordTransformationMethod. But which method I of that class need I implement and how show asterisk? Is there other way to do that?
謝謝
推薦答案
我覺得你應該通過文檔.創建你的 PasswordTransformationMethod 類，并在 getTransformation() 方法中，只返回與內容長度相同的 * 字符串您的密碼字段.
I think you should go through the documentation. Create your PasswordTransformationMethod class, and in the getTransformation() method, just return a string of * characters that is the same length as the contents of your password field.
我做了一些擺弄，想出了一個匿名類，它可以讓我創建一個充滿 * 的字段.我在這里將其轉換為可用的類:
I did some fiddling and came up with an anonymous class that worked for me to make a field full of *s. I converted it into a usable class here:
public class MyPasswordTransformationMethod extends PasswordTransformationMethod {
@Override
public CharSequence getTransformation(CharSequence source, View view) {
return new PasswordCharSequence(source);
}
private class PasswordCharSequence implements CharSequence {
private CharSequence mSource;
public PasswordCharSequence(CharSequence source) {
mSource = source; // Store char sequence
}
public char charAt(int index) {
return '*'; // This is the important part
}
public int length() {
return mSource.length(); // Return default
}
public CharSequence subSequence(int start, int end) {
return mSource.subSequence(start, end); // Return default
}
}
};
// Call the above class using this:
text.setTransformationMethod(new MyPasswordTransformationMethod());
這篇關于在android中如何顯示星號(*)代替EditText中的點，輸入類型為textPassword?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！