動態壁紙性能問題

我目前遇到了一些非常密集繪製的動態壁紙的問題。然而，在測試我的代碼時，我發現壁紙是滯後的，並在屏幕旋轉時被破壞。動態壁紙性能問題

在我的畫法我有這樣的：

mRectArray = new Rect[] { 
       new Rect(0, 0, c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20, 
         c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20 * 2), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 2, 
         c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20 * 3), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 3, 
         c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20 * 4), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 4, 
         c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20 * 5), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 5, 
         c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20 * 6), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 6, 
         c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20 * 7), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 7, 
         c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20 * 8), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 8, 
         c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20 * 9), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 9, 
         c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20 * 10), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 10, 
         c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20 * 11), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 11, 
         c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20 * 12), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 12, 
         c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20 * 13), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 13, 
         c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20 * 14), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 14, 
         c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20 * 15), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 15, 
         c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20 * 16), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 16, 
         c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20 * 17), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 17, 
         c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20 * 18), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 18, 
         c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20 * 19), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 19, 
         c.getWidth(), 
         (c.getHeight() + statusBarHeight)/20 * 20), 

       new Rect(0, 0, right1, 
         (c.getHeight() + statusBarHeight)/20), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20, right2, 
         (c.getHeight() + statusBarHeight)/20 * 2), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 2, 
         right3, (c.getHeight() + statusBarHeight)/20 * 3), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 3, 
         right4, (c.getHeight() + statusBarHeight)/20 * 4), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 4, 
         right5, (c.getHeight() + statusBarHeight)/20 * 5), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 5, 
         right6, (c.getHeight() + statusBarHeight)/20 * 6), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 6, 
         right7, (c.getHeight() + statusBarHeight)/20 * 7), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 7, 
         right8, (c.getHeight() + statusBarHeight)/20 * 8), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 8, 
         right9, (c.getHeight() + statusBarHeight)/20 * 9), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 9, 
         right10, 
         (c.getHeight() + statusBarHeight)/20 * 10), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 10, 
         right11, 
         (c.getHeight() + statusBarHeight)/20 * 11), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 11, 
         right12, 
         (c.getHeight() + statusBarHeight)/20 * 12), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 12, 
         right13, 
         (c.getHeight() + statusBarHeight)/20 * 13), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 13, 
         right14, 
         (c.getHeight() + statusBarHeight)/20 * 14), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 14, 
         right15, 
         (c.getHeight() + statusBarHeight)/20 * 15), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 15, 
         right16, 
         (c.getHeight() + statusBarHeight)/20 * 16), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 16, 
         right17, 
         (c.getHeight() + statusBarHeight)/20 * 17), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 17, 
         right18, 
         (c.getHeight() + statusBarHeight)/20 * 18), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 18, 
         right19, 
         (c.getHeight() + statusBarHeight)/20 * 19), 
       new Rect(0, (c.getHeight() + statusBarHeight)/20 * 19, 
         right20, 
         (c.getHeight() + statusBarHeight)/20 * 20), 

       new Rect(c.getWidth()/20, c.getHeight()/15, 
         c.getWidth()/20 * 8, c.getHeight()/15 * 4), 

       new Rect(c.getWidth()/20, c.getHeight()/15, 
         c.getWidth()/20 * 8, c.getHeight()/15 * 8), };

這是40長方形不斷被初始化的onDraw。現在的問題是，這些矩形必須不斷初始化，因爲我的動畫矩形20的右側...

我還有一個40左右，如果進行動畫的矩形陳述..

我怎樣才能壓縮我的代碼，以便不犧牲性能？

來源

2012-06-15 Denizen

嘗試使用分析器查找瓶頸。另外，您不能一次創建Rect，然後更改其屬性？創建一個對象相對昂貴。也想想opengl，renderscript等。 – Ran

最後20個矩形的右側有變量，而且我爲每個變量設置了動畫，但是當我嘗試在方法中初始化一個矩形後繪製每個矩形時，我會得到一個nullpointerexception和一個關閉力。 – Denizen

使用onSurfaceChange（）函數的高度和寬度初始化onSurfaceChange（）中的數組。

來源

2012-06-16 18:04:56

動態壁紙性能問題

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