本文实例为大家分享了Android自定义View验证码输入框的具体代码，供大家参考，具体内容如下
验证码输入框
1.先看下样式
2.直接上代码
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public class MyVcode extends AppCompatEditText { private int mFigures = 0;// 验证码个数 private int mCodeMargin = 0;// 验证码之间的间距 private int mSelectColor = 0;// 选中框的颜色 private int mNormalColor = 0;// 普通框的颜色 private float mBorderWidth = 0f;// 边框的厚度 Paint mNormalPaint = new Paint(); Paint mSelectPaint = new Paint(); Paint mOkContentPain = new Paint();//填写了内容的验证码 private OnVerifyCodeChangedListener onVerifyCodeChangedListener; private int mCurrentPosition = 0;// 当前验证码的位置 private int mEachRectLength = 0;// 矩形边长 public MyVcode(Context context) { super(context, null); } public MyVcode(Context context, AttributeSet attrs) { super(context, attrs); initAttr(context,attrs); initPaint(); setFocusableInTouchMode(true); initTextChangeListerner(); } private void initTextChangeListerner() { addTextChangedListener(new TextWatcher() { @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { mCurrentPosition = getText().length(); } @Override public void onTextChanged(CharSequence s, int start, int before, int count) { mCurrentPosition = getText().length(); postInvalidate(); if (onVerifyCodeChangedListener!=null){ onVerifyCodeChangedListener.onVerCodeChanged(getText().toString(),start,before,count); } } @Override public void afterTextChanged(Editable s) { mCurrentPosition = getText().length(); postInvalidate(); if (getText().length() == mFigures){ if (onVerifyCodeChangedListener!=null){ onVerifyCodeChangedListener.onInputCompleted(getText().toString()); } }else if (getText().length()>mFigures){ getText().delete(mFigures,getText().length()); } } }); } @Override public boolean onTouchEvent(MotionEvent event) { if (event.getAction()==MotionEvent.ACTION_DOWN){ requestFocus(); setSelection(getText().length()); showKeyBoard(getContext()); return false; } return super.onTouchEvent(event); } private void showKeyBoard( Context context) { InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE); imm.showSoftInput(this, InputMethodManager.SHOW_FORCED); } private void initAttr(Context context, AttributeSet attrs) { TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.VerifyCodeEditText); mFigures = ta.getInteger(R.styleable.VerifyCodeEditText_figures, 6); mCodeMargin = (int) ta.getDimension(R.styleable.VerifyCodeEditText_codeMargin, 0f); mSelectColor = ta.getColor(R.styleable.VerifyCodeEditText_selectBorderColor,getResources().getColor(R.color.base_barcolor)); mNormalColor = ta.getColor( R.styleable.VerifyCodeEditText_normalBorderColor, getResources().getColor(android.R.color.darker_gray) ); mBorderWidth = ta.getDimension(R.styleable.VerifyCodeEditText_borderWidth, 1f); /* mCursorColor = ta.getColor( R.styleable.VerifyCodeEditText_cursorColor, getResources().getColor(android.R.color.darker_gray) ); ta.recycle();*/ /* // force LTR because of bug: https://github.com/JustKiddingBaby/VercodeEditText/issues/4 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) { layoutDirection = LAYOUT_DIRECTION_LTR }*/ } private void initPaint() { mNormalPaint.setAntiAlias(true); mNormalPaint.setColor(mNormalColor); mNormalPaint.setStyle(Paint.Style.FILL_AND_STROKE); mNormalPaint.setStrokeWidth(mBorderWidth); mSelectPaint.setAntiAlias(true); mSelectPaint.setColor(mSelectColor); mSelectPaint.setStyle(Paint.Style.STROKE); mSelectPaint.setStrokeWidth(mBorderWidth); mOkContentPain.setAntiAlias(true); mOkContentPain.setColor(mSelectColor); mOkContentPain.setStyle(Paint.Style.FILL_AND_STROKE); mOkContentPain.setStrokeWidth(mBorderWidth); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); int size = MeasureSpec.getSize(heightMeasureSpec); // 每个矩形的宽度 相当于我门圆的直径 mEachRectLength = size ; } @Override protected void onDraw(Canvas canvas) { //super.onDraw(canvas); Editable text = this.getText(); mCurrentPosition = text.length(); int width = mEachRectLength -getPaddingLeft() - getPaddingRight(); for (int i =0 ;i< mFigures;i++){ canvas.save(); float start = width*i +mCodeMargin*i+mBorderWidth; float end = start+width - mBorderWidth; if (i==mFigures-1){ end -= mBorderWidth; } RectF rect = new RectF(start, mBorderWidth, end, width - mBorderWidth); //画底色 canvas.drawArc(rect, 0f, 360f, true, mNormalPaint); if (i == mCurrentPosition) {//选中的下一个状态 canvas.drawArc(rect, 0f, 360f, true, mNormalPaint); canvas.drawArc(rect, 0f, 360f, true, mSelectPaint); }else { canvas.drawArc(rect, 0f, 360f, true, mNormalPaint); } if (mCurrentPosition>i){ //画已经有内容的 canvas.drawArc(rect, 0f, 360f, true, mOkContentPain); } canvas.restore(); } String s = text.toString(); //画文字 for (int i = 0;i<mCurrentPosition;i++){ canvas.save(); int start = width * i + mCodeMargin * i; float x = start + width / 2f; TextPaint paint = getPaint(); paint.setTextAlign(Paint.Align.CENTER); paint.setColor(getCurrentTextColor()); Paint.FontMetrics fontMetrics = paint.getFontMetrics(); float baseline = (width - fontMetrics.bottom + fontMetrics.top) / 2 - fontMetrics.top; canvas.drawText(s.substring(i,i+1), x, baseline, paint); canvas.restore(); } } /** * 验证码变化时候的监听事件 */ interface OnVerifyCodeChangedListener { /** * 当验证码变化的时候 */ public void onVerCodeChanged(String s,int start, int before, int count); /** * 输入完毕后的回调 */ public void onInputCompleted(String s); }} |
3.自定义的属性
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<!--验证码的属性--> <declare-styleable name="VerifyCodeEditText"> <attr name="figures" format="integer"/><!--验证码的个数--> <attr name="codeMargin" format="dimension"/><!--验证码的之间的间隔--> <attr name="selectBorderColor" format="color|reference"/><!--选中的边框颜色--> <attr name="normalBorderColor" format="color|reference"/><!--普通的边框颜色--> <attr name="borderWidth" format="dimension"/><!--边框的厚度 --> <attr name="cursorColor" format="color|reference"/><!--已经有内容的颜色 --></declare-styleable> |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/LDH_123/article/details/105583271
