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我有一個apk的路徑「/system/app/Gallery2.apk」,我想在SD卡上覆制它。我執行復制方法以編程方式將/system/app/*.apk複製到SD卡
public void copy(File src, File dst) throws IOException {
InputStream in = new FileInputStream(src);
OutputStream out = new FileOutputStream(dst);
// Transfer bytes from in to out
byte[] buf = new byte[1024];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
in.close();
out.close();
}
,但它顯示IOException異常
我傳遞值
try {
File file =new File(pm.getApplicationInfo(TAG_PACKAGE.get(position),PackageManager.GET_META_DATA).publicSourceDir);
Toast.makeText(MainActivity.this , pm.getApplicationInfo(TAG_PACKAGE.get(position),PackageManager.GET_META_DATA).publicSourceDir, Toast.LENGTH_LONG).show();
try {
File dir = new File(Environment.getExternalStorageDirectory() + "/foldername/");
if(!dir.exists())
{
if(dir.mkdir()) ;//directory is created;
Toast.makeText(MainActivity.this ,dir.toString(), Toast.LENGTH_LONG).show();
}
copy(file.getAbsoluteFile(), dir);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} catch (NameNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
例外:
exception java.io.FileNotFoundException: /storage/sdcard0/folder: open failed: EISDIR (Is a directory)
它不工作,thnks
難道IOException異常......被拒絕的權限? http://stackoverflow.com/questions/12978524/android-ioexception-permission-denied – ecle
no no,java.io.FileNotFoundException:/ storage/sdcard0/foldername:打開失敗:EISDIR(是一個目錄) – stackoverflow
我已經創建它了,但dnt的工作,每次都是相同的例外 – stackoverflow