[英]Android : Read binary file failure
I was try to read a binary file storing the position of x, y, z ,w. 我试图读取一个存储x,y,z,w位置的二进制文件。 that is, they are all float such as 1.4567896 5.156986 .....etc.
也就是说,它们都是浮动的,例如1.4567896 5.156986 ..... etc。
I successfully read it in c++ and also java, but couldn't done in android, all I read in is all zero... 我在c ++和java中都成功读取了它,但是在android中却无法完成,我读到的全部都是零...
Here is my code : ps. 这是我的代码:ps。 I try many codes before, all failed...
我之前尝试过很多代码,但都失败了...
public class DataIO {
private int DataSize = 640*320*4;
private float[] fDataBuffer;
private byte[] bDataBuffer;
private String sOutput;
public DataIO(){
bDataBuffer = new byte[DataSize*4];
fDataBuffer = new float[DataSize];
}
/*=============================================
* Function:
* ReadFile
* Description:
* Read binary float data to float[] buffer.
*================================================ */
public void ReadFile(String FileName){
File file = new File(FileName);
try {
FileInputStream finStream = new FileInputStream(file);
if(finStream.read(bDataBuffer) == -1){
Log.d("ReadData", "Reading Data has problem.");
}
finStream.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
int index = 0;
for(int i = 0; i < DataSize; i+=1){
/*int asInt = (bDataBuffer[i+0] & 0xFF)
| ((bDataBuffer[i+1] & 0xFF) << 8)
| ((bDataBuffer[i+2] & 0xFF) << 16)
| ((bDataBuffer[i+3] & 0xFF) << 24);
fDataBuffer[index] = Float.intBitsToFloat(asInt);*/
sOutput += String.format("%d ", bDataBuffer[i]);
index++;
}
}
/*=============================================
* Function:
* GetData
* Description:
* output the data by string.
*================================================ */
public String GetData(){
return sOutput;
}
}
I blocked the transformation of byte to float cuz read in byte have to be check if they are correct first.
我阻止了将字节转换为浮点型cuz,必须先检查它们是否正确,然后再读取字节。
在Android上,您需要使用可运行的界面来不断检查变量。
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