TextView的内容明文和密文之间的切换

首先初始化

togglePasswordVisibility(views.tvKey)

其次处理点击事件

views.tvPrivateKey.debouncedClicks {
                togglePasswordVisibility(views.tvKey)
            }
private var isPasswordVisible = false
    private fun togglePasswordVisibility(textView: AppCompatTextView) {
        if (isPasswordVisible) {
            // 显示明文
            views.imPrivateKeyState.setImageResource(R.drawable.ic_private_eye_close)
            textView.transformationMethod = null
        } else {
            // 用星号隐藏
            views.imPrivateKeyState.setImageResource(R.drawable.ic_private_eye_open)
            textView.transformationMethod = PasswordTransformationMethod.getInstance()
        }
        isPasswordVisible = !isPasswordVisible
    }