Android自定义控件实现通用验证码输入框

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import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.os.Build;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.TextView;

import androidx.annotation.ColorInt;
import androidx.annotation.RequiresApi;

/**
 * 
 *  author ：BraveTou
 *  blog  ：https://blog.csdn.net/bravetou
 *  time  ：2020/9/4 16:43
 *  desc  ：
 *   自定义验证码输入框
 *  
 * 
 */
public class AuthCodeInputView extends LinearLayout {
 // 
 private int mDefaultSpacing = 16;
 // 
 @ColorInt
 private int mDefaultColor = Color.BLACK;
 // 
 private int mDefaultTextSize = 36;
 // 
 @ColorInt
 private int mCurrentSplitLineColor = mDefaultColor;
 // 
 @ColorInt
 private int mOtherSplitLineColor = mDefaultColor;
 // 
 private int mSplitLineHeight = 1;
 // 
 private int mDigit = 4;
 // 
 private int mSingleCaptchaWidth = 100;
 // 
 @ColorInt
 private int mCurrentTextColor = mDefaultColor;
 // 
 private int mCurrentTextSize = mDefaultTextSize;
 // 
 @ColorInt
 private int mOtherTextColor = mDefaultColor;
 // 
 private int mOtherTextSize = mDefaultTextSize;

 // 记录当前输入文本
 private String mText = "";

 public AuthCodeInputView(Context context) {
  super(context);
  init(context, null);
 }

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

 public AuthCodeInputView(Context context, AttributeSet attrs, int defStyleAttr) {
  super(context, attrs, defStyleAttr);
  init(context, attrs);
 }

 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
 public AuthCodeInputView(Context context, AttributeSet attrs, int defStyleAttr,
        int defStyleRes) {
  super(context, attrs, defStyleAttr, defStyleRes);
  init(context, attrs);
 }

 // 初始化
 private void init(Context context, AttributeSet attrs) {
  setOrientation(LinearLayout.HORIZONTAL);
  setGravity(Gravity.CENTER);
  if (getChildCount() > 0) {
   removeAllViews();
  }
  initAttrs(context, attrs);
  if (mDigit <= 0) {
   return;
  }
  for (int i = 0; i  0) {
   setText(mText.substring(0, count - 1));
  } else {
   setText("");
  }
 }

 // 设置文本
 public void setText(String text) {
  text = text.trim();
  int length = TextUtils.isEmpty(text) &＃63; 0 : text.length();
  if (length > mDigit) {
   this.mText = text.substring(0, mDigit);
   length = mDigit;
  } else {
   this.mText = length > 0 &＃63; text : "";
  }
  int count = getChildCount();
  for (int i = 0; i