暴露您view中所有影响可见外观的属性或者行为。
•通过XML添加和设置样式
•通过元素的属性来控制其外观和行为，支持和重要事件交流的事件监听器
详细步骤见：Android 自定义View步骤
效果图展示：
支持的样式
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
绘制逻辑的主要代码
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);}} 新闻热点
疑难解答
