隐藏显示密码

cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
    @Override
    public void onCheckedChanged(CompoundButton compoundButton, boolean isChecked) {
        if (isChecked) {
            //如果选中，显示密码
            et_pw.setTransformationMethod(HideReturnsTransformationMethod.getInstance());
        } else {
            //否则隐藏密码
            et_pw.setTransformationMethod(PasswordTransformationMethod.getInstance());
        }
    }
});