我正在尝试使用输入/输出流将我的Blackberry资源文件夹复制到SD卡。但是,我似乎无法让这个工作。运行Blackberry模拟器时,我收到一条错误消息,指示error: cannot find symbol inConn.close(); & outConn.close();
。有人可以告诉我我做错了吗?
import com.phonegap.api.Plugin;
import com.phonegap.api.PluginResult;
import javax.microedition.io.*;
import javax.microedition.io.file.*;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.json.me.JSONArray;
public static PluginResult execute(JSONArray args) {
String[] resourseFileNames = {"file1","file2"."file3"};
final int length = resourseFileNames.length;
for(int i=0; i<length; i++) {
String srcFile = "file:///store/home/user/sample/www" + resourseFileNames[i];
FileConnection srcConn = (FileConnection) Connector.open(srcFile, Connector.READ);
InputStream in = srcConn.openInputStream();
String dstFile = "file:///SDCard/MyAppName/www" + resourseFileNames[i];
FileConnection dstConn = (FileConnection)Connector.open(dstFile, Connector.WRITE);
OutputStream out = dstConn.openOutputStream();
// Copy the bits from instream to outstream
byte[] buf = new byte[1024];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
in.close();
inConn.close();
out.close();
outConn.close();
}
String value = "OK";
return new PluginResult(PluginResult.Status.OK, value);
}
我正在使用Phonegap如果这有任何区别。感谢。
答案 0 :(得分:3)
您没有正确打开流。相反,您应该为源文件和目标文件使用单独的FileConnection
。然后用
FileConnection#openInputStream()打开InputStream
和FileConnection#openOutputStream()打开OutputStream
。
代码段:
for(int i=0; i<length; i++) {
try {
String srcFile = "file:///store/home/user/sample/www" + resourseFileNames[i];
FileConnection srcConn = (FileConnection) Connector.open(srcFile, Connector.READ);
InputStream in = srcConn.openInputStream();
String dstFile = "file:///SDCard/myAppName/www" + resourseFileNames[i];
FileConnection dstConn = (FileConnection)Connector.open(dstFile, Connector.WRITE);
OutputStream out = dstConn.openOutputStream();
// Copy the bits from instream to outstream
byte[] buf = new byte[1024];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
in.close();
srcConn.close();
out.close();
dstConn.close();
} catch (IOException e) {
e.printStackTrace();
}
}
更新1 :修正了导致“无法找到符号”错误的错误。
更新2 :使用try / catch包围代码(捕获IOException)。