android – 如何在视图失去焦点时屏蔽EditText中的文本.

所以我实现了一个自定义TransformationMethod,如果EditText字段没有焦点,它只会屏蔽输入的文本.@H_696_7@

当我输入文本“12345”时,它显示它应该是“12345”但是当我点击不同的字段时,数字永远不会被屏蔽.我想看到“*****”,但我仍然看到相同的“12345”@H_696_7@

如果我旋转设备(强制它重新加载所有东西),它会正确显示“*****”.当我点击EditText字段时,它会正确地将屏蔽文本从“*****”更改为“12345”因此,在获得焦点时它会起作用,但在失去焦点时则不起作用.我试过实现一个OnFocuschangelistener,但似乎没有任何影响.@H_696_7@

有没有什么办法可以强制EditText字段在失去焦点时重绘文本？@H_696_7@

建立：@H_696_7@

editText.setTransformationMethod(CustompasswordTransformationMethod(numUnobfuscatedDigits))
editText.setOnFocuschangelistener { view,hasFocus ->
                    ((EditText)view).invalidate()    
                     ((EditText)view).refreshDrawableState()

CustompasswordTransformationMethod：
    public class CustompasswordTransformationMethod extends passwordTransformationMethod {
        privatE int unObfuscated = 1;
        private Boolean mIsFocused = false;@H_696_7@

/**
     * @param number the number of digits that will be unObfuscated at the end of the input String. Must be a positive Integer or 0.
     */
    public CustompasswordTransformationMethod(int number) {
        if (number < 0) {
            Log.e(tag,"Invalid parameter number =" + number + " number of un-obfuscated digits must be a positive Integer or 0.");
            unObfuscated = 0;
        }
        unObfuscated = number;
    }

    @Override
    public CharSequence getTransformation(CharSequence source,View view) {
        return new passwordCharSequence(sourcE);
    }

    @Override
    public void onFocusChanged(View view,CharSequence sourceText,Boolean focused,int direction,Rect prevIoUslyFocusedRect) {
        super.onFocusChanged(view,sourceText,focused,direction,prevIoUslyFocusedRect);
        mIsFocused = focused;
    }


    private class passwordCharSequence implements CharSequence {
        private CharSequence msource;

        public passwordCharSequence(CharSequence sourcE) {
            msource = source; // Store char sequence
        }

        public char charAt(int indeX) {
            if(mIsFocused) return msource.charAt(indeX);
            else {
                if (index < ((length()) - unObfuscated)) return '●';
                return msource.charAt(indeX);
            }
        }

        public int length() {
            return msource.length(); // Return default
        }

        public CharSequence subSequence(int start,int end) {
            return msource.subSequence(start,end); // Return default
        }
    }
};