Android自定义view三验证码输入控件

自定义view三：输入六位验证码的控件

public class InputCodeView extends AppCompatEditText {private int   currentColor = 0xFFCCCCCC;private int   borderColor  = 0xFFCCCCCC;private float borderWidth  = 5;private float borderRadius = 3;private int   passwordLength = 6;private int   passwordColor  = 0xFFCCCCCC;private float passwordWidth  = 8;private float passwordRadius = 3;private Paint passwordPaint = new Paint();private Paint borderPaint   = new Paint();private int    textLength;private String textContent;private float   splitLineWidth    = 0; //分割宽度private float   eachPasswordWidth = 0;  //每个方块的宽度private Path    mPath             = new Path();private boolean passwordBold      = false;private String curPassword;public InputCodeView(Context context, AttributeSet attrs) {    super(context, attrs);    DisplayMetrics dm = getResources().getDisplayMetrics();    borderWidth = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, borderWidth, dm);    borderRadius = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, borderRadius, dm);    passwordLength = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, passwordLength, dm);    passwordWidth = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_PX, passwordWidth, dm);    passwordRadius = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, passwordRadius, dm);    splitLineWidth = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, splitLineWidth, dm);    TypedArray a = context.getTheme().obtainStyledAttributes(attrs, R.styleable.InputCodeView, 0, 0);    currentColor = a.getColor(R.styleable.InputCodeView_pivCurrentColor, borderColor);    borderColor = a.getColor(R.styleable.InputCodeView_pivBorderColor, borderColor);    borderWidth = a.getDimension(R.styleable.InputCodeView_pivBorderWidth, borderWidth);    borderRadius = a.getDimension(R.styleable.InputCodeView_pivBorderRadius, borderRadius);    passwordLength = a.getInt(R.styleable.InputCodeView_pivPasswordLength, passwordLength);    passwordColor = a.getColor(R.styleable.InputCodeView_pivPasswordColor, passwordColor);    passwordWidth = a.getDimension(R.styleable.InputCodeView_pivPasswordWidth, passwordWidth);    passwordRadius = a.getDimension(R.styleable.InputCodeView_pivPasswordRadius, passwordRadius);    splitLineWidth = a.getDimension(R.styleable.InputCodeView_pivSplitLineWidth, splitLineWidth);    passwordBold = a.getBoolean(R.styleable.InputCodeView_pivPasswordBold, false);    a.recycle();    borderPaint.setStrokeWidth(borderWidth);    borderPaint.setColor(borderColor);    borderPaint.setStyle(Paint.Style.FILL);    passwordPaint.setStrokeWidth(passwordWidth);    passwordPaint.setTypeface(Typeface.DEFAULT);    if (passwordBold)        passwordPaint.setStyle(Paint.Style.STROKE);    else passwordPaint.setStyle(Paint.Style.FILL);    passwordPaint.setColor(passwordColor);    addTextChangedListener(new TextWatcher() {        @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) {            curPassword = s.toString();            if (!TextUtils.isEmpty(curPassword) && passwordLength == curPassword.length()) {                if (mOnExaminedCodeListener != null) {                    mOnExaminedCodeListener.onExaminedCode(curPassword);                }            }        }    });}@Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {    int width_size  = MeasureSpec.getSize(widthMeasureSpec);    int width_mode  = MeasureSpec.getMode(widthMeasureSpec);    int height_mode = MeasureSpec.getMode(heightMeasureSpec);    int height_size = MeasureSpec.getSize(widthMeasureSpec);    int widthSpec   = MeasureSpec.makeMeasureSpec(width_size, width_mode);    if (width_size / passwordLength - height_size < 20) {        splitLineWidth = 20;        int heightSpec = MeasureSpec.makeMeasureSpec(width_size / passwordLength - 20, MeasureSpec.EXACTLY);        super.onMeasure(widthSpec, heightSpec);    } else {        super.onMeasure(widthSpec, heightMeasureSpec);    }}@Override@SuppressLint("DrawAllocation")protected void onDraw(Canvas canvas) {    int width  = getWidth();    int height = getHeight();    if (width / passwordLength - height < 20) {        splitLineWidth = 20;    } else {        eachPasswordWidth = height;        splitLineWidth = (width - passwordLength * eachPasswordWidth) / (passwordLength - 1);    }    eachPasswordWidth = (width - (passwordLength - 1) * splitLineWidth) / passwordLength;    for (int i = 0; i < passwordLength; i++) {        RectF rectIn = new RectF(i * (eachPasswordWidth + splitLineWidth) + 1, 1, (i + 1) * eachPasswordWidth + i * splitLineWidth, height);        canvas.drawRoundRect(rectIn, borderRadius, borderRadius, borderPaint);

// if (!TextUtils.isEmpty(curPassword)) {
// if (i < curPassword.length()) borderPaint.setColor(currentColor);
// else borderPaint.setColor(borderColor);
// }
// mPath = new Path();
// mPath.moveTo(i * (eachPasswordWidth + splitLineWidth) + dp2px(6), getMeasuredHeight() - dp2px(1));
// mPath.lineTo((i + 1) * eachPasswordWidth + i * splitLineWidth - dp2px(6), getMeasuredHeight() - dp2px(1));
// canvas.drawPath(mPath, borderPaint);
}
// 密码
float cx, cy = height / 2;
passwordPaint.setColor(passwordColor);
float textSize = getTextSize();
passwordPaint.setTextSize(textSize);
passwordPaint.setAntiAlias(true);
float half = (width - (passwordLength - 1) * splitLineWidth) / passwordLength / 2;
for (int i = 0; i < textLength; i++) {
cx = i * (eachPasswordWidth + splitLineWidth) + half;
String text = textContent.substring(i, i + 1);
Rect bounds = new Rect();
passwordPaint.getTextBounds(text, 0, text.length(), bounds);
canvas.drawText(text, cx - bounds.width() / 2, cy + bounds.height() / 2, passwordPaint);
}
}

@Overrideprotected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {    super.onTextChanged(text, start, lengthBefore, lengthAfter);    this.textLength = text.toString().length();    textContent = text.toString();    invalidate();}public int getBorderColor() {    return borderColor;}public void setBorderColor(int borderColor) {    this.borderColor = borderColor;    borderPaint.setColor(borderColor);    invalidate();}public float getBorderWidth() {    return borderWidth;}public void setBorderWidth(float borderWidth) {    this.borderWidth = borderWidth;    borderPaint.setStrokeWidth(borderWidth);    invalidate();}public float getBorderRadius() {    return borderRadius;}public void setBorderRadius(float borderRadius) {    this.borderRadius = borderRadius;    invalidate();}public int getPasswordLength() {    return passwordLength;}public void setPasswordLength(int passwordLength) {    this.passwordLength = passwordLength;    invalidate();}public int getPasswordColor() {    return passwordColor;}public void setPasswordColor(int passwordColor) {    this.passwordColor = passwordColor;    passwordPaint.setColor(passwordColor);    invalidate();}public float getPasswordWidth() {    return passwordWidth;}public void setPasswordWidth(float passwordWidth) {    this.passwordWidth = passwordWidth;    passwordPaint.setStrokeWidth(passwordWidth);    invalidate();}public float getPasswordRadius() {    return passwordRadius;}public void setPasswordRadius(float passwordRadius) {    this.passwordRadius = passwordRadius;    invalidate();}private int dp2px(int dp) {    DisplayMetrics displayMetrics = getResources().getDisplayMetrics();    return (int) (dp * displayMetrics.density + 0.5f);}/** * 设置验证码完成回调接口 */public interface OnExaminedCodeListener {    void onExaminedCode(String identified_code);}private OnExaminedCodeListener mOnExaminedCodeListener;public void setOnExaminedCodeListener(OnExaminedCodeListener examinedCodeListener) {    this.mOnExaminedCodeListener = examinedCodeListener;}

}
attrs文件

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