遵從准則
詳細步驟見:Android 自定義View步驟 http://www.linuxidc.com/Linux/2015-08/120991.htm
樣子
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,邊框寬度,密碼長度,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>
同時支持原來EditText功能,可以獲得數據值,數字鍵盤設置等
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);
// 內容區
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);
}
}
完整代碼下載
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免費下載地址在 http://linux.linuxidc.com/
用戶名與密碼都是www.linuxidc.com
具體下載目錄在 /2015年資料/8月/2日/Linux內核代碼閱讀心得體會PDF/
下載方法見 http://www.linuxidc.com/Linux/2013-07/87684.htm
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更多Android相關信息見Android 專題頁面 http://www.linuxidc.com/topicnews.aspx?tid=11