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FileUitils.java
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FileUitils.java
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package com.cylan.cloud.oem;
import android.os.Environment;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
/**
* Created by chen on 16-10-12.
*/
public class FileUitils {
private String SDPATH;
public String getSDPATH() {
return SDPATH;
}
public FileUitils() {
SDPATH = Environment.getExternalStorageDirectory().getAbsolutePath();
}
/**
* 在sdcard创建文件
*/
public File createSDFile(String filenamel) throws IOException {
File file = new File(SDPATH + filenamel);
file.createNewFile();
return file;
}
/*
* 在sdcard创建目录
* */
public File createSDDir(String dirName) {
File dir = new File(SDPATH + dirName);
dir.mkdir();
return dir;
}
/*判断sdcard文件夹是否存在*/
public boolean isFileExist(String fileName) {
File file = new File(SDPATH + fileName);
return file.exists();
}
/*将一个InputStream里面的数据写入到sdcard中*/
public File write2SDFromInput(String path, String fileName, InputStream input) throws IOException {
File file = null;
OutputStream output = null;
try {
createSDDir(path);
File f = createSDFile(path + fileName);
output = new FileOutputStream(f);
byte buffer[] = new byte[1024 * 4];
while ((input.read(buffer)) != -1) {
output.write(buffer);
}
output.flush();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
output.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return file;
}
}