效果动图

实现思路

绘制多个TextView控件用来显示数字
绘制隐藏EditText用来接收输入法内容(防止部分手机或输入法监听不到内容)
将EditText的内容显示到TextView中

代码实现

自定义控件继承至LinearLayout

public class CodeEditView extends LinearLayout

绘制多个TextView并绘制方块边框背景用来显示数字

for (int i = 0; i < EditViewNum; i++) {
            TextView textView = new TextView(mContext);
            textView.setBackgroundResource(R.drawable.shape_border_normal);
            textView.setGravity(Gravity.CENTER);
            textView.setTextSize(DensityUtil.sp2px(mContext,textSize));
            textView.getPaint().setFakeBoldText(true);
            textView.setLayoutParams(params);
            textView.setInputType(inputTyte);
            textView.setTextColor(textColor);
            textView.setOnClickListener(this);
            mTextViewsList.add(textView);
            addView(textView);
        }

绘制EditText并将背景设为透明(不让用户看到,仅用来监听输入法内容,防止部分手机或输入法不兼容)

mEditText = new EditText(context);
        mEditText.setBackgroundColor(Color.parseColor("#00000000"));
        mEditText.setMaxLines(1);
        mEditText.setInputType(EditorInfo.TYPE_CLASS_NUMBER);
        mEditText.setFilters(new InputFilter[]{new InputFilter.LengthFilter(EditViewNum)});
        mEditText.addTextChangedListener(this);
        mEditText.setTextSize(0);
        addView(mEditText);

监听输入法内容进行逻辑处理

@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 (callBack!=null) {
            callBack.afterTextChanged(s.toString());
        }
        if (s.length() <= 1) {
            mTextViewsList.get(0).setText(s);
        } else {
            mTextViewsList.get(mEditText.getText().length() - 1).setText(s.subSequence(s.length() - 1, s.length()));
        }
        if (s.length()==EditViewNum) {
            if (callBack!=null) {
                callBack.input(mEditText.getText().toString());
            }
        }
    }

当点击TextView时,将EditText获取到焦点并弹出输入法

    @Override
    public void onClick(View v) { //TextView点击时获取焦点弹出输入法
        mEditText.setFocusable(true);
        mEditText.setFocusableInTouchMode(true);
        mEditText.requestFocus();
        InputMethodManager imm = (InputMethodManager) mContext.getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);
    }

Demo地址

GitHub地址: https://github.com/lvkaixuan/CodeEditView
CSDN博客地址: https://blog.csdn.net/lvkaixuan/article/details/82455366

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