首先來看看實圖

這裡實現原理就是繼承ProgressBar重寫onDraw方法，在ondraw裡面用畫筆繪製text

首先初始化paint

首先獲取手機螢幕的寬高，根據手機解析度來定標準字型大小，這裡採用的720x1080（比較通用）

獲取進度，設定文字內容

最後就是onDraw繪製了

@Override
protected synchronized void onDraw(Canvas canvas)
{
    super.onDraw(canvas);
    Rect rect = new Rect();
    this.mPaint.getTextBounds(text
 
, 0, text.length(), rect);
    this.mPaint.getTextBounds(text1, 0, text1.length(), rect);
    
    int progress = getProgress();
    int width = getWidth();
    

/**以免getmax為0

    if (getMax() != 0)
    {
        int start = width / getMax() * progress;
        int end = width / getMax() * (getMax() - progress);
        int 
 
x_two = ((end / 2) + start) - rect.centerX();
        int x_one = (start / 2) - rect.centerX();
        int y = (getHeight() / 2) - rect.centerY();
        if (getProgress() == 0)
        {
            canvas.drawText(this.text1, x_two, y, this.mPaint);
        }
        else
{
            canvas.drawText(this
 
.text, x_one, y, this.mPaint);
            canvas.drawText(this.text1, x_two, y, this.mPaint);
        }
    }
}

到這裡就完成了。

程式碼下載地址http://download.csdn.net/download/lmy545x/10038852