[英]Android FileInputStream read same data continuously
我想使蓝牙套接字通信发送文件
我从FileInputStream通过缓冲区读取数据,并将其写入其他输出流。
但是该程序连续读取相同的数据,而不读取下一个内容。
这是我的资料
MSendArgWrapper wrapper = makeWrapper(sendArg, MSendArgWrapper.MODE_SWITCH_FILE);
try {
byte[] bytes = CUtility.serialize(wrapper);
outStream.write(bytes);
outStream.flush();
File file = new File(filePath);
FileInputStream fis = new FileInputStream(file);
byte buf[] = new byte[1024];
do {
int numread = fis.read(buf);
if (numread <= 0)
break;
if(LOG_I_ENABLE)
Log.i(TAG, "[CCommunicateThread] Sending File... [" + numread + "] => " + buf.toString());
outStream.write(buf, 0, numread);
} while (true);
outStream.flush();
} catch (IOException e) {
e.printStackTrace();
onDisconnected();
}
这是日志
08-16 08:07:21.002 20001-21388/com.example.park.psyche I/CBluetoothManager﹕ [CCommunicateThread] Sending File... [1024] => [B@42b0ab48 08-16 08:07:21.002 20001-21388/com.example.park.psyche I/CBluetoothManager﹕ [CCommunicateThread] Sending File... [1024] => [B@42b0ab48 08-16 08:07:21.002 20001-21388/com.example.park.psyche I/CBluetoothManager﹕ [CCommunicateThread] Sending File... [1024] => [B@42b0ab48 08-16 08:07:21.002 20001-21388/com.example.park.psyche I/CBluetoothManager﹕ [CCommunicateThread] Sending File... [1024] => [B@42b0ab48 08-16 08:07:21.002 20001-21388/com.example.park.psyche I/CBluetoothManager﹕ [CCommunicateThread] Sending File... [1024] => [B@42b0ab48 08-16 08:07:21.002 20001-21388/com.example.park.psyche I/CBluetoothManager﹕ [CCommunicateThread] Sending File... [1024] => [B@42b0ab48 08-16 08:07:21.002 20001-21388/com.example.park.psyche I/CBluetoothManager﹕ [CCommunicateThread] Sending File... [1024] => [B@42b0ab48
问题是什么?
您的代码有效,但您打印的内容与您想像的不一样。
字节数组类型byte[]
是对象类型。 如果使用方法toString()
,它将不会将字节转换为String。
如果要将byte[]
转换为String类型,请使用: new String(my_byte_array)
与:
Log.i(TAG, "[CCommunicateThread] Sending File... [" + numread + "] => " + new String(buf));
您将获得正确的输出
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