2022寒假家庭记账本开发记录07

本篇是2022寒假家庭记账本开发记录06，本篇通过B站up主——写BUG的狐狸，来学习制作简约家庭记账本。如下是我今日的开发进程：

今天我绘制了自定义软键盘和逻辑编写02：

首先建立一个包Utils，然后在里面建一个类KeyBoardUtils，进行对软键盘的逻辑编写，其源代码如下：

package com.example.csjjsb.utils;

import android.inputmethodservice.Keyboard;
import android.inputmethodservice.KeyboardView;
import android.text.Editable;
import android.text.InputType;
import android.view.View;
import android.widget.EditText;

import com.example.csjjsb.R;

public class KeyBoardUtils {
    private final Keyboard k1;
    private KeyboardView keyboardView;
    private EditText editText;

    public interface OnEnsureListener {
        public void onEnsure();

    }
    OnEnsureListener onEnsureListener;

    public void setOnEnsureListener(OnEnsureListener onEnsureListener) {
        this.onEnsureListener = onEnsureListener;
    }

    public KeyBoardUtils(KeyboardView keyboardView, EditText editText) {
        this.keyboardView = keyboardView;
        this.editText = editText;
        this.editText.setInputType(InputType.TYPE_NULL);
        k1 = new Keyboard(this.editText.getContext(), R.xml.key);


        this.keyboardView.setKeyboard(k1);
        this.keyboardView.setEnabled(true);
        this.keyboardView.setPreviewEnabled(false);
        this.keyboardView.setOnKeyboardActionListener(listener);
    }


    KeyboardView.OnKeyboardActionListener listener = new KeyboardView.OnKeyboardActionListener() {
        @Override
        public void onPress(int i) {

        }

        @Override
        public void onRelease(int i) {

        }

        @Override
        public void onKey(int primaryCode, int[] keyCodes) {
            Editable editable = editText.getText();
            int start = editText.getSelectionStart();
            switch (primaryCode){
                case Keyboard.KEYCODE_DELETE:
                    if (editable!=null &&editable.length()>0) {
                        if (start>0) {
                            editable.delete(start-1,start);
                        }
                    }
                    break;
                case Keyboard.KEYCODE_CANCEL:
                    editable.clear();
                    break;
                case Keyboard.KEYCODE_DONE:
                    onEnsureListener.onEnsure();
                    break;
                default:
                    editable.insert(start,Character.toString((char)primaryCode));
                    break;
            }

        }

        @Override
        public void onText(CharSequence charSequence) {

        }

        @Override
        public void swipeLeft() {

        }

        @Override
        public void swipeRight() {

        }

        @Override
        public void swipeDown() {

        }

        @Override
        public void swipeUp() {

        }
    };

    public void showKeyboard(){
        int visibility = keyboardView.getVisibility();
        if (visibility == View.INVISIBLE||visibility == View.GONE) {
            keyboardView.setVisibility(View.VISIBLE);
        }
    }

    public void  hideKeyboard(){
        int visibility = keyboardView.getVisibility();
        if (visibility == View.VISIBLE||visibility == View.INVISIBLE) {
            keyboardView.setVisibility(View.GONE);
        }
    }
}