暴露您view中所有影響可見外觀的屬性或者行為。
•通過XML添加和設(shè)置樣式
•通過元素的屬性來控制其外觀和行為，支持和重要事件交流的事件監(jiān)聽器
詳細(xì)步驟見：Android 自定義View步驟
效果圖展示：
支持的樣式
可以通過XML定義影響外邊和行為的屬性如下
邊框圓角值，邊框顏色，分割線顏色，邊框?qū)挾龋艽a長度，密碼大小，密碼顏色
<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>
同時(shí)支持原來EditText功能，可以獲得數(shù)據(jù)值，數(shù)字鍵盤設(shè)置等
繪制邏輯的主要代碼
protected void onDraw(Canvas canvas) {int width = getWidth();int height = getHeight();// 外邊框RectF rect = new RectF(0, 0, width, height);borderPaint.setColor(borderColor);canvas.drawRoundRect(rect, borderRadius, borderRadius, borderPaint);// 內(nèi)容區(qū)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);// 分割線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);}// 密碼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);}} 新聞熱點(diǎn)
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