暴露您view中所有影响可见外观的属性或者行为。
详细步骤见:Android 自定义View步骤
可以通过XML定义影响外边和行为的属性如下
边框圆角值,边框颜色,分割线颜色,边框宽度,密码长度,密码大小,密码颜色
<declare-styleable name="PasswordInputView"> <attr name="borderWidth" format="dimension"/> <attr name="borderColor" format="color"/> <attr name="borderRadius" format="dimension"/> <attr name="passwordLength" format="integer"/> <attr name="passwordWidth" format="dimension"/> <attr name="passwordColor" format="color"/> <attr name="passwordRadius" format="dimension"/> </declare-styleable>
同时支持原来EditText功能,可以获得数据值,数字键盘设置等
protected void onDraw(Canvas canvas) { int width = getWidth(); int height = getHeight(); // 外边框 RectF rect = new RectF(0, 0, width, height); borderPaint.setColor(borderColor); canvas.drawRoundRect(rect, borderRadius, borderRadius, borderPaint); // 内容区 RectF rectIn = new RectF(rect.left + defaultContMargin, rect.top + defaultContMargin, rect.right - defaultContMargin, rect.bottom - defaultContMargin); borderPaint.setColor(Color.WHITE); canvas.drawRoundRect(rectIn, borderRadius, borderRadius, borderPaint); // 分割线 borderPaint.setColor(borderColor); borderPaint.setStrokeWidth(defaultSplitLineWidth); for (int i = 1; i < passwordLength; i++) { float x = width * i / passwordLength; canvas.drawLine(x, 0, x, height, borderPaint); } // 密码 float cx, cy = height/ 2; float half = width / passwordLength / 2; for(int i = 0; i < textLength; i++) { cx = width * i / passwordLength + half; canvas.drawCircle(cx, cy, passwordWidth, passwordPaint); } }
https://github.com/tianshaojie/Android-PasswordInputView