[英]API level 29 Intent.ACTION_GET_CONTENT returning wrong id from downloads folder
我正在嘗試查找從文件選擇器意圖返回的 URI 的完整文件路徑。 我從 Internet 下載了一張圖片,該圖片保存在瀏覽器默認下載文件夾中。 問題是 DocumentsContract.getDocumentId(content_describer) 返回的 id 類似於 "msf:254" 而不是通常返回的 Long 類型的 id。 代碼如下
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 101 && resultCode == Activity.RESULT_OK) {
Uri content_describer = data.getData();
String src = content_describer.getPath();
try {
Bitmap bitmap = MediaStore.Images.Media.getBitmap(getActivity().getContentResolver(), data.getData());
imgView.setImageBitmap(bitmap);
}catch(Exception e){
}
Log.e("selected file", content_describer.toString());
String filename = content_describer.getLastPathSegment();
Log.e("selected path", filename);
Log.e("authority",content_describer.getAuthority());
if (content_describer.getAuthority().equals("com.android.externalstorage.documents")) {
final String docId = DocumentsContract.getDocumentId(content_describer);
final String[] split = docId.split(":");
final String type = split[0];
Log.e("npath", "getPath() docId: " + docId + ", split: " + split.length + ", type: " + type);
if ("primary".equalsIgnoreCase(type)) {
if (split.length > 1) {
Log.e("nnpath1", Environment.getExternalStorageDirectory() + "/" + split[1]);
curFile = Environment.getExternalStorageDirectory() + "/" + split[1];
} else {
Log.e("nnpath2", Environment.getExternalStorageDirectory() + "/");
}
// This is for checking SD Card
} else {
Log.e("nnpath3", "storage" + "/" + docId.replace(":", "/"));
curFile = "storage" + "/" + docId.replace(":", "/");
}
}
if (content_describer.getAuthority().equals("com.android.providers.downloads.documents")) {
final String docId = DocumentsContract.getDocumentId(content_describer);
Log.e("docid",docId);
Uri ci = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(docId));
final String column = "_data";
final String[] projection = {
column
};
Cursor cursor10 = getActivity().getApplicationContext().getContentResolver().query(ci, projection, null, null,
null);
if (cursor10 != null && cursor10.moveToFirst()) {
final int column_index = cursor10.getColumnIndexOrThrow(column);
Log.e("imgpp", cursor10.getString(column_index));
Log.e("imgpp2", Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).getPath());
File fn = new File(cursor10.getString(column_index));
Log.e("imgpp3", fn.getPath());
curFile = fn.getPath();
}
}
if (content_describer.getAuthority().equals("com.android.providers.media.documents")) {
final String docId = DocumentsContract.getDocumentId(content_describer);
Log.e("docid", docId);
final String[] split = docId.split(":");
final String type = split[0];
Uri contentUri = null;
if ("image".equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}
final String selection = "_id=?";
final String[] selectionArgs = new String[]{
split[1]
};
final String column = "_data";
final String[] projection = {
column
};
Cursor cursor1 = getActivity().getApplicationContext().getContentResolver().query(contentUri, projection, selection, selectionArgs,
null);
if (cursor1 != null && cursor1.moveToFirst()) {
final int column_index = cursor1.getColumnIndexOrThrow(column);
Log.e("imgpp", cursor1.getString(column_index));
Log.e("imgpp2", Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).getPath());
File fn = new File(cursor1.getString(column_index));
Log.e("imgpp3", fn.getPath());
curFile = fn.getPath();
}
}
Log.e("final path",curFile);
}
}
請注意,如果我通過圖像->下載選擇相同的圖像,上面的代碼可以正常工作,但是當從下載文件夾中選擇相同的文件時,會拋出以下錯誤
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.flexi.app.android, PID: 15414
java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=196709, result=-1, data=Intent { dat=content://com.android.providers.downloads.documents/document/msf:253 flg=0x1 }} to activity {com.flexi.app.android/com.flexi.app.android.ProfileActivity}: java.lang.IllegalArgumentException: Unknown URI: content://downloads/public_downloads/253
at android.app.ActivityThread.deliverResults(ActivityThread.java:4830)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:4871)
at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:51)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2009)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7319)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:934)
Caused by: java.lang.IllegalArgumentException: Unknown URI: content://downloads/public_downloads/253
at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:170)
at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:140)
at android.content.ContentProviderProxy.query(ContentProviderNative.java:423)
at android.content.ContentResolver.query(ContentResolver.java:934)
at android.content.ContentResolver.query(ContentResolver.java:872)
at android.content.ContentResolver.query(ContentResolver.java:830)
at com.flexi.app.android.fragments.ProfileImageFragment.onActivityResult(ProfileImageFragment.java:171)
at androidx.fragment.app.FragmentActivity.onActivityResult(FragmentActivity.java:170)
at com.flexi.app.android.ProfileActivity.onActivityResult(ProfileActivity.java:28)
at android.app.Activity.dispatchActivityResult(Activity.java:8091)
URI 報告為 content://com.android.providers.downloads.documents/document/msf%3A253 知道什么是 msf 嗎? 我看過圖像、視頻、audo,但第一次注意到 msf。
當您在 URI 中獲得“msf:xxx”時,請使用以下解決方案:
if (id != null && id.startsWith("msf:")) {
final File file = new File(mContext.getCacheDir(), Constant.TEMP_FILE + Objects.requireNonNull(mContext.getContentResolver().getType(imageUri)).split("/")[1]);
try (final InputStream inputStream = mContext.getContentResolver().openInputStream(imageUri); OutputStream output = new FileOutputStream(file)) {
final byte[] buffer = new byte[4 * 1024]; // or other buffer size
int read;
while ((read = inputStream.read(buffer)) != -1) {
output.write(buffer, 0, read);
}
output.flush();
return file;
} catch (IOException ex) {
ex.printStackTrace();
}
return null;
}
我已經解決了這個問題,它對 msf 100% 有效。 :)
完成工作后還要刪除臨時文件:
private void deleteTempFile() {
final File[] files = requireContext().getCacheDir().listFiles();
if (files != null) {
for (final File file : files) {
if (file.getName().contains(Constant.TEMP_FILE)) {
file.delete();
}
}
}
}
這里的 TEMP_FILE 值為“temp”。
我從評論部分找到了方法。 感謝@blackapps。
val inputStream = context!!.contentResolver.openInputStream(data.data!!)
val docFile =File("${activity!!.cacheDir}/doc_${sharedPreferences.getString("applno", "")}.pdf")
if (!docFile.exists()) {
docFile.createNewFile()
}
copyStreamToFile(inputStream,!,docFile)
private fun copyStreamToFile(inputStream: InputStream, outputFile: File) {
inputStream.use { input ->
val outputStream = FileOutputStream(outputFile)
outputStream.use { output ->
val buffer = ByteArray(4 * 1024) // buffer size
while (true) {
val byteCount = input.read(buffer)
if (byteCount < 0) break
output.write(buffer, 0, byteCount)
}
output.flush()
}
}
}
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