android fileoutputstream 权限,android_10_文件访问权限

素颜马尾好姑娘i 2022-10-05 11:58 275阅读 0赞

效果:

![ac08a97c013eb83fc32e00dc0afa46fd.png][]

代码:

public void privateFile()\{

//路径已经默认为data/data/包名/files

try \{

FileOutputStream fos = openFileOutput("privateFile.txt", MODE\_PRIVATE);

fos.write("beyond".getBytes());

fos.close();

\} catch (Exception e) \{

e.printStackTrace();

\}

\}

public void readFile()\{

//路径已经默认为data/data/包名/files

try \{

@SuppressWarnings("deprecation")

FileOutputStream fos = openFileOutput("readFile.txt", MODE\_WORLD\_READABLE);

fos.write("beyond".getBytes());

fos.close();

\} catch (Exception e) \{

e.printStackTrace();

\}

\}

public void writeFile()\{

//路径已经默认为data/data/包名/files

try \{

@SuppressWarnings("deprecation")

FileOutputStream fos = openFileOutput("writeFile.txt", MODE\_WORLD\_WRITEABLE);

fos.write("beyond".getBytes());

fos.close();

\} catch (Exception e) \{

e.printStackTrace();

\}

\}

public void readWriteFile()\{

//路径已经默认为data/data/包名/files

try \{

@SuppressWarnings("deprecation")

FileOutputStream fos = openFileOutput("readWriteFile.txt", MODE\_WORLD\_READABLE | MODE\_WORLD\_WRITEABLE);

fos.write("beyond".getBytes());

fos.close();

\} catch (Exception e) \{

e.printStackTrace();

\}

\}

另一个应用(去读取rw文件)

public void accessToReadWriteFile(View v)\{

File file = new File("data/data/com.sg31.globalFilePermission/files/readWriteFile.txt");

try \{

FileInputStream fis = new FileInputStream(file);

BufferedReader br = new BufferedReader(new InputStreamReader(fis));

Toast.makeText(this, br.readLine(), 0).show();

\} catch (Exception e) \{

e.printStackTrace();

\}

\}

[ac08a97c013eb83fc32e00dc0afa46fd.png]: /images/20221005/30217f377a7b4b9aa73723bcd4194b0b.png

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