显示隐藏Loading图标

在登录是出现的删除图标，登录密码时出现的小眼睛

账号的工具类：

//账号
public class CleanEditButton extends AppCompatImageView {
    public CleanEditButton(Context context) {
        super(context);
    }

    public CleanEditButton(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public CleanEditButton(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }
    //绑定EditText
    public void bindEditText(EditText editText){
        //editText 添加文字监听
        editText.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {

            }

            @Override
            public void afterTextChanged(Editable s) {
                //如果输入文字就就显示   否则就隐藏
                if (editText.getText().toString().length()>0){
                    setVisibility(VISIBLE);
                }else {
                    setVisibility(GONE);
                }
            }
        });
    }
}

密码的工具类：

//密码
public class TogglePasswordButton extends AppCompatImageView {
    private boolean isOpen=false;//默认眼睛是闭

    private EditText mPassWord;
    private OnClickListener mListener;

    public TogglePasswordButton(Context context) {
        super(context);
        initClickListener();
    }

    public TogglePasswordButton(Context context, AttributeSet attrs) {
        super(context, attrs);
        initClickListener();
    }


    public TogglePasswordButton(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        initClickListener();
    }
    private void initClickListener(){
        super.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                //如果外面进行了监听   就调用on Click
                if (mListener!=null){
                    mListener.onClick(v);
                }//如果没有就执行toggle方法
                else {
                    toggle();
                }

            }
        });
    }

    @Override
    public void setOnClickListener(@Nullable OnClickListener l) {
        mListener = l;
    }

    private void toggle() {
        if (isOpen){
            setBackgroundResource(R.drawable.ic_eyes_close);
            isOpen=false;
            //PasswordTransformationMethod 密码变化成隐藏
            mPassWord.setTransformationMethod(PasswordTransformationMethod.getInstance());
        }else {
            setBackgroundResource(R.drawable.ic_eyes_open);
            isOpen=true;
            mPassWord.setTransformationMethod(HideReturnsTransformationMethod.getInstance());

        }
    }


    public void bindEditText(EditText editText){
        mPassWord =editText;
        editText.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {

            }

            @Override
            public void afterTextChanged(Editable s) {
                    if (editText.getText().toString().length()>0){
                        setVisibility(VISIBLE);
                    }else {
                        setVisibility(GONE);
                    }
            }
        });
    }
}