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chunk的字节个数不固定,因为我要下班回家了,先不写了。
/frameworks/base/include/androidfw/ResourceTypes.h
int8_t wasDeserialized;
int8_t numXDivs;
int8_t numYDivs;
int8_t numColors;
// These tell where the next section of a patch starts.
// For example, the first patch includes the pixels from
// 0 to xDivs[0]?1 and the second patch includes the pixels
// from xDivs[0] to xDivs[1]?1.
// Note: allocation/free of these pointers is left to the caller.
int32_t* xDivs;
int32_t* yDivs;
int32_t paddingLeft, paddingRight;
int32_t paddingTop, paddingBottom;
enum {
// The 9 patch segment is not a solid color.
NO_COLOR = 0x00000001,
// The 9 patch segment is completely transparent.
TRANSPARENT_COLOR = 0x00000000
};
// Note: allocation/free of this pointer is left to the caller.
uint32_t* colors;
// Convert data from device representation to PNG file representation.
void deviceToFile();
// Convert data from PNG file representation to device representation.
void fileToDevice();
// Serialize/Marshall the patch data into a newly malloc?ed block
void* serialize();
// Serialize/Marshall the patch data
void serialize(void* outData);
// Deserialize/Unmarshall the patch data
static Res_png_9patch* deserialize(const void* data);
// Compute the size of the serialized data structure
size_t serializedSize();
public static NinePatch createFixedNinePatch(Resources res, Bitmap bitmap, int top, int left, int bottom, int right, String srcName){
ByteBuffer buffer = getByteBufferFixed(top, left, bottom, right);
NinePatch patch = new NinePatch(bitmap, buffer.array(), srcName);
return patch;
}
public static ByteBuffer getByteBufferFixed(int top, int left, int bottom, int right) {
//Docs check the NinePatchChunkFile
ByteBuffer buffer = ByteBuffer.allocate(84).order(ByteOrder.nativeOrder());
//was translated
buffer.put((byte)0x01);
//divx size
buffer.put((byte)0x02);
//divy size
buffer.put((byte)0x02);
//color size
buffer.put(( byte)0x09);
//skip
buffer.putInt(0);
buffer.putInt(0);
//padding
buffer.putInt(0);
buffer.putInt(0);
buffer.putInt(0);
buffer.putInt(0);
//skip 4 bytes
buffer.putInt(0);
buffer.putInt(left);
buffer.putInt(right);
buffer.putInt(top);
buffer.putInt(bottom);
buffer.putInt(NO_COLOR);
buffer.putInt(NO_COLOR);
buffer.putInt(NO_COLOR);
buffer.putInt(NO_COLOR);
buffer.putInt(NO_COLOR);
buffer.putInt(NO_COLOR);
buffer.putInt(NO_COLOR);
buffer.putInt(NO_COLOR);
buffer.putInt(NO_COLOR);
return buffer;
}
参考:
http://stackoverflow.com/questions/16509404/building-a-9-patch-drawable-at-runtime/16676419#16676419
http://www.itrunner.cn/?p=244
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原文地址:http://my.oschina.net/u/2291753/blog/476313