自定义AlertDialog中的EditText无法唤起键盘

最近遇到的一个bug，起初都是正常使用的，后面代码越加越多才引起。但是原因不太明白，毕竟对话框相关代码就那么点，废话不多说，直接上代码：

1.最终效果图如下

2.最终解决方案

在dialog调用setContentView()方法后设置如下代码：

        alertDialog.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
        alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE |
                WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);

3.奉上创建对话框代码

   public void showInputPayPwdDialog(Context context, String prices) {
        AlertDialog.Builder builder = new AlertDialog.Builder(context);
        final AlertDialog alertDialog = builder.create();
        alertDialog.show();

        View view = View.inflate(context, R.layout.view_input_pay_pwd_alert_dialog, null);
        TextView tv_money = view.findViewById(R.id.tv_money);
        PwdEditText edPwd = view.findViewById(R.id.ed_pwd);

        TextView tvCancel = view.findViewById(R.id.tv_cancel_dialog);
        TextView tvConfirm = view.findViewById(R.id.tv_confirm_dialog);
        ClearEditText edInput = view.findViewById(R.id.ed_input);
        ImageView btn_finish = view.findViewById(R.id.btn_finish);

        btn_finish.setOnClickListener(view1 -> {
            alertDialog.dismiss();
        });

        edPwd.setOnInputFinishListener(new PwdEditText.OnInputFinishListener() {
            @Override
            public void onInputFinish(String password) {
                // 点击“确认”后的操作   充值金额inputString
            }
        });

        tv_money.setText(FormatUtils.getMoneySign()+TextViewUtils.noEmpty(prices));

        alertDialog.getWindow().setContentView(view);
        alertDialog.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
        alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE |
                WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);

    }

3.以下是自定义密码输入框代码：

public class PwdEditText extends AppCompatEditText {

    /**
     * 间隔
     */
    private final int PWD_SPACING = 5;
    /**
     * 密码大小
     */
    private final int PWD_SIZE = 5;
    /**
     * 密码长度
     */
    private final int PWD_LENGTH = 6;
    /**
     * 上下文
     */
    private Context mContext;
    /**
     * 宽度
     */
    private int mWidth;
    /**
     * 高度
     */
    private int mHeight;
    /**
     * 密码框
     */
    private Rect mRect;

    /**
     * 密码画笔
     */
    private Paint mPwdPaint;

    /**
     * 密码框画笔
     */
    private Paint mRectPaint;
    /**
     * 输入的密码长度
     */
    private int mInputLength;

    /**
     * 输入结束监听
     */
    private OnInputFinishListener mOnInputFinishListener;

    /**
     * 构造方法
     *
     * @param context
     * @param attrs
     */
    public PwdEditText(Context context, AttributeSet attrs) {
        super(context, attrs);

        // 初始化密码画笔
        mPwdPaint = new Paint();
        mPwdPaint.setColor(Color.BLACK);
        mPwdPaint.setStyle(Paint.Style.FILL);
        mPwdPaint.setAntiAlias(true);
        // 初始化密码框
        mRectPaint = new Paint();
        mRectPaint.setStyle(Paint.Style.STROKE);
        mRectPaint.setColor(Color.LTGRAY);
        mRectPaint.setAntiAlias(true);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        mWidth = getWidth();
        mHeight = getHeight();

        // 这三行代码非常关键，大家可以注释点在看看效果
        Paint paint = new Paint();
        paint.setColor(Color.WHITE);
        canvas.drawRect(0, 0, mWidth, mHeight, paint);

        // 计算每个密码框宽度
        int rectWidth = (mWidth - PWD_SPACING * (PWD_LENGTH - 1)) / PWD_LENGTH;
        // 绘制密码框
        for (int i = 0; i < PWD_LENGTH; i++) {
            int left = (rectWidth + PWD_SPACING) * i;
            int top = 2;
            int right = left + rectWidth;
            int bottom = mHeight - top;
            mRect = new Rect(left, top, right, bottom);
            canvas.drawRect(mRect, mRectPaint);
        }

        // 绘制密码
        for (int i = 0; i < mInputLength; i++) {
            int cx = rectWidth / 2 + (rectWidth + PWD_SPACING) * i;
            int cy = mHeight / 2;
            canvas.drawCircle(cx, cy, PWD_SIZE, mPwdPaint);
        }
    }

    @Override
    protected void onTextChanged(CharSequence text, int start,
                                 int lengthBefore, int lengthAfter) {
        super.onTextChanged(text, start, lengthBefore, lengthAfter);
        this.mInputLength = text.toString().length();
        invalidate();
        if (mInputLength == PWD_LENGTH && mOnInputFinishListener != null) {
            mOnInputFinishListener.onInputFinish(text.toString());
        }
    }

    public interface OnInputFinishListener {
        /**
         * 密码输入结束监听
         *
         * @param password
         */
        void onInputFinish(String password);
    }

    /**
     * 设置输入完成监听
     *
     * @param onInputFinishListener
     */
    public void setOnInputFinishListener(
            OnInputFinishListener onInputFinishListener) {
        this.mOnInputFinishListener = onInputFinishListener;
    }

}

以及，xml布局中使用自定义密码输入框控件

        <com.example.jingbin.zkfudou.view.PwdEditText
            android:id="@+id/ed_pwd"
            android:layout_gravity="center_horizontal"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp"
            android:layout_marginBottom="15dp"
            android:background="@android:color/transparent"
            android:inputType="number"
            android:cursorVisible="false"
            android:enabled="true"
            android:focusable="true"
            android:maxLength="6" />