Android零碎知識（一）

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public abstract Resources getResources ()

Return a Resources instance for your application‘s package.

 

 

BitmapFactoryextends Objectjava.lang.Object    ? android.graphics.BitmapFactory Class Overview--------------------------------------------------------------------------------Creates Bitmap objects from various sources, including files, streams, and byte-arrays. 

 

public void translate (float dx, float dy) Added in API level 1Preconcat the current matrix with the specified translationWhen working with matrices, the word concatenation refers to multiplication.Since matrix multiplication is not commutative, there is a separate word for backwards multiplication.Pre-concatenating a to b means setting a = b × a. (As opposed to a = a × b, which will give a different matrix)The canvas maintains a matrix and the canvas is manipulated by methods which are well defined in OpenGL

 

Android零碎知識（一）