我試圖在 Android 路徑出現(xiàn)時(shí)復(fù)制該文件，但沒(méi)有成功，盡管它已經(jīng)作為 AndroidManifest 上的權(quán)限存在，就好像該文件不存在或在那里不知道它一樣。這是一段代碼：public void onActivityResult(int requestCode, int resultCode, Intent data){ switch (requestCode) { case FILE_SELECT_CODE: if (resultCode == RESULT_OK) { Uri uri = data.getData(); String origem = uri.getPath(); File src = new File(origem); if(src.isFile()){ Log.d(TAG,src.toString()); } File root = Environment.getExternalStorageDirectory(); root = new File(root.toString(), "Kcollector/importa/import.csv"); try { copy(src,root,true); } catch (IOException e) { e.printStackTrace(); } } break; } super.onActivityResult(requestCode, resultCode, data);}public static void copy(File origem, File destino, boolean overwrite) throws IOException{ Date date = new Date(); if (destino.exists() && !overwrite){ System.err.println(destino.getName()+" já existe, ignorando..."); return; } FileInputStream fisOrigem = new FileInputStream(origem); FileOutputStream fisDestino = new FileOutputStream(destino); FileChannel fcOrigem = fisOrigem.getChannel(); FileChannel fcDestino = fisDestino.getChannel(); fcOrigem.transferTo(0, fcOrigem.size(), fcDestino); fisOrigem.close(); fisDestino.close(); Long time = new Date().getTime() - date.getTime(); System.out.println("Saiu copy"+time);}嘗試復(fù)制時(shí)返回的錯(cuò)誤：W/System.err：java.io.FileNotFoundException：/external_storage/Kcollector/importa/kvendasajustado.csv（沒(méi)有這樣的文件或目錄） W/System.err：在 java.io.FileInputStream.open0（本機(jī)方法）
1 回答
偶然的你
TA貢獻(xiàn)1841條經(jīng)驗(yàn) 獲得超3個(gè)贊
檢查運(yùn)行時(shí)權(quán)限或使用第一個(gè)響應(yīng)中指示的方法
public static void copy(File src, File dst) throws IOException {
InputStream in = new FileInputStream(src);
try {
OutputStream out = new FileOutputStream(dst);
try {
// Transfer bytes from in to out
byte[] buf = new byte[1024];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
} finally {
out.close();
}
} finally {
in.close();
}
}
最后檢查 url 是否格式正確。否則你可以用斷點(diǎn)調(diào)試（搜索這些詞），并找到問(wèn)題的確切來(lái)源
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