ht_gate/app/src/main/java/com/ht/gate/PasswordDialog.java

package com.ht.gate;

import android.content.Context;
import android.os.Bundle;
import android.os.Handler;
import android.text.TextUtils;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatDialog;

import butterknife.BindView;
import butterknife.ButterKnife;

public class PasswordDialog extends AppCompatDialog {

    private final int MSG_HIDE_PASSWORD = 1;

    public interface DialogListener {
        void onCancel(PasswordDialog dialog);

        void onConfirm(PasswordDialog dialog, String password);
    }

    @BindView(R.id.keyboard_view)
    CustomKeyboardView keyboardView;
    @BindView(R.id.tv_room_name)
    TextView tv1;
    @BindView(R.id.tv_space_name)
    TextView tv2;
    @BindView(R.id.tv3)
    TextView tv3;
    @BindView(R.id.tv4)
    TextView tv4;

    private TextView[] textViews;
    private String password = "";
    private String passwordStr = "";
    private DialogListener listener;

    private Handler mHandler = new Handler(msg -> {
        switch (msg.what) {
            case MSG_HIDE_PASSWORD:
                passwordStr = passwordStr.replaceAll(".", "●");
                updatePasswordTv();
                break;
        }
        return true;
    });

    public PasswordDialog(Context context) {
        super(context, R.style.DialogStyle);
    }

    public void setListener(DialogListener listener) {
        this.listener = listener;
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.dialog_password);
        ButterKnife.bind(this);
        Window window = getWindow();
        WindowManager.LayoutParams wlp = window.getAttributes();
        wlp.gravity = Gravity.BOTTOM;
        window.setAttributes(wlp);
        window.setWindowAnimations(R.style.DialogAnimation);
        window.setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.WRAP_CONTENT);
        View decorView = getWindow().getDecorView();
        int uiOptions = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                | View.SYSTEM_UI_FLAG_FULLSCREEN
                | View.SYSTEM_UI_FLAG_IMMERSIVE;
        decorView.setSystemUiVisibility(uiOptions);

        textViews = new TextView[]{tv1, tv2, tv3, tv4};

        keyboardView.setKeyboardActionListener(new CustomKeyboardView.OnKeyboardActionListener() {
            @Override
            public void onPress(int primaryCode) {

            }

            @Override
            public void onRelease(int primaryCode) {

            }

            @Override
            public void onKey(int primaryCode, int[] keyCodes) {
                switch (primaryCode) {
                    case CustomKeyboardView.KEYCODE_CANCEL:
                        if (listener != null) {
                            listener.onCancel(PasswordDialog.this);
                        }
                        break;
                    case CustomKeyboardView.KEYCODE_DONE:
                        if (listener != null) {
                            listener.onConfirm(PasswordDialog.this, password);
                        }
                        break;
                    case CustomKeyboardView.KEYCODE_DELETE:
                        if (password.length() > 0) {
                            password = password.substring(0, password.length() - 1);
                            passwordStr = password.replaceAll(".", "●");
                            updatePasswordTv();
                        }
                        break;
                    default:
                        String str = Character.toString((char) primaryCode);
                        if (!TextUtils.isEmpty(str) && password.length() < 4) {
                            str = str.substring(0, 1);
                            password += str;
                            passwordStr = password.substring(0, password.length() - 1).replaceAll(".", "●") + str;
                            updatePasswordTv();
                        }
                        mHandler.removeMessages(MSG_HIDE_PASSWORD);
                        mHandler.sendEmptyMessageDelayed(MSG_HIDE_PASSWORD, 1000);
                        if (password.length() == 4) {
                            if (listener != null) {
                                listener.onConfirm(PasswordDialog.this, password);
                            }
                        }
                        break;
                }
            }

            @Override
            public void onText(CharSequence text) {

            }
        });
    }

    private void updatePasswordTv() {
        for (int i = 0; i < textViews.length; i++) {
            if (passwordStr.length() > i) {
                textViews[i].setText(passwordStr.charAt(i) + "");
            } else {
                textViews[i].setText("");
            }
            if (textViews[i].getText().toString().equals("●")) {
                textViews[i].setTextSize(TypedValue.COMPLEX_UNIT_SP, 20);
            } else {
                textViews[i].setTextSize(TypedValue.COMPLEX_UNIT_SP, 37);
            }
        }
    }
}