将EditText密码掩码字符更改为星号(*)

有没有办法将密码文本从句点(.(更改为星号(*(。

密码正在编辑文本中输入。

<EditText
        android:id="@+id/passWord1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:inputType="number"
        android:password="true"/>

在xml文件中插入编辑文本

<EditText
    android:id="@+id/passWordEditText"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:inputType="textPassword"/>

然后你的类文件继续从edittext中获取findViewById，并为此实现

EditText edittext = (EditText)findViewById(R.id.passWordEditText);
edittext.setTransformationMethod(new AsteriskPasswordTransformationMethod());

这个类实现了

public class AsteriskPasswordTransformationMethod 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
        }
    }
};

如果你的代码是Kotlin，那么你必须制作单独的java文件，然后你必须将java与Kotlin代码一起使用

<EditText
        android:id="@+id/passWord1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:inputType="textPassword"//here is the change. check it once in your xml
        android:password="true"/>

在eclipse中，当您在android:inputType处移动光标时，单击Ctrl+Space时会有提示。然后您可以看到选项列表。在那里你可以选择textPassword

如果您想用*代替.，请检查此Android: Asterisk Password Field

通过Ram kiran 发布的链接得到了答案

text.setTransformationMethod(new AsteriskPasswordTransformationMethod());

public class AsteriskPasswordTransformationMethod 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
    }
}
};

Kotlin

class AsteriskPasswordTransformationMethod : PasswordTransformationMethod() {
    override fun getTransformation(source: CharSequence, view: View): CharSequence {
        return PasswordCharSequence(source)
    }
    inner class PasswordCharSequence (private val source: CharSequence) : CharSequence {
        override val length: Int
            get() = source.length
        override fun get(index: Int): Char = '*'
        override fun subSequence(startIndex: Int, endIndex: Int): CharSequence {
            return source.subSequence(startIndex, endIndex)
        }
        
    }
    
}

以Kotlin方式：

类星号PasswordTransformationMethod:PasswordTransformationMethod((｛

override fun getTransformation(source: CharSequence?, view: View?): CharSequence {
    return super.getTransformation(source, view)
}

 abstract inner class PasswordCharSequence(val source: CharSequence) : CharSequence {
     override val length: Int
         get() = source.length
     override fun get(index: Int): Char =
         '*'
    override fun subSequence(start: Int, end: Int): CharSequence {
        return source.subSequence(start, end) // Return default
    }
}

EditText.setTransformationMethod(new PasswordTransformationMethod());

对于android:inputType，有一种类型的密码。

试试这个

android:inputType="textPassword"

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