我尝试使用简单的Activity来选择多个视频，但我得到的文件路径始终为null。即使我得到的URI如下：
＆＃34;内容：//com.android.providers.media.documents/document/video%3A86935"
我无法将其转换为filePath。使用下面的代码，＆＃34; videoPath为空＆＃34;将永远印刷。
public class VideoPickerActivity extends Activity {
private static final String TAG = "VideoPickerActivity";
private static final int SELECT_VIDEO = 1;
private List<String> selectedVideos;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent intent = new Intent();
intent.setType("video/mp4");
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select videos"), SELECT_VIDEO);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == SELECT_VIDEO) {
selectedVideos = getSelectedVideos(data);
}
}
finish();
}
private List<String> getSelectedVideos(Intent data) {
List<String> result = new ArrayList<>();
String[] filePathColumn = { MediaStore.Video.Media.DATA };
// Single video selected
if(data.getData() != null){
Uri mImageUri = data.getData();
// Get the cursor
Cursor cursor = getContentResolver().query(mImageUri,
filePathColumn, null, null, null);
// Move to first row
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String videoPath = cursor.getString(columnIndex);
if(videoPath == null)
Log.e(TAG, "videoPath is null");
result.add(videoPath);
cursor.close();
}
// Multiple videos selected
else {
ClipData mClipData = data.getClipData();
if (mClipData != null) {
for (int i = 0; i < mClipData.getItemCount(); i++) {
ClipData.Item item = mClipData.getItemAt(i);
Uri uri = item.getUri();
// Get the cursor
Cursor cursor = getContentResolver().query(uri, filePathColumn, null, null, null);
// Move to first row
if (cursor == null)
Log.e(TAG, "cursor is null");
else {
if (cursor.moveToFirst()) {
int columnIndex = cursor.getColumnIndex(MediaStore.Video.Media.DATA);
String videoPath = cursor.getString(columnIndex);
if(videoPath == null)
Log.e(TAG, "videoPath is null");
result.add(videoPath);
} else {
Log.e(TAG, "cannot use cursor");
}
cursor.close();
}
}
}
}
return result;
}
}
任何帮助将不胜感激，谢谢！
答案 0 :(得分：4)
所以我设法根据this answer
进行了操作以下是我使用的代码：
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.ClipData;
import android.content.ContentUris;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;
import java.util.ArrayList;
import java.util.List;
public class VideoPickerActivity extends Activity {
private static final String TAG = "VideoPickerActivity";
private static final int SELECT_VIDEOS = 1;
private static final int SELECT_VIDEOS_KITKAT = 1;
private List<String> selectedVideos;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (Build.VERSION.SDK_INT <19){
Intent intent = new Intent();
intent.setType("video/mp4");
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select videos"),SELECT_VIDEOS);
} else {
Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
intent.setType("video/mp4");
startActivityForResult(intent, SELECT_VIDEOS_KITKAT);
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
selectedVideos = getSelectedVideos(requestCode, data);
}
finish();
}
private List<String> getSelectedVideos(int requestCode, Intent data) {
List<String> result = new ArrayList<>();
ClipData clipData = data.getClipData();
if(clipData != null) {
for(int i=0;i<clipData.getItemCount();i++) {
ClipData.Item videoItem = clipData.getItemAt(i);
Uri videoURI = videoItem.getUri();
String filePath = getPath(this, videoURI);
result.add(filePath);
}
}
else {
Uri videoURI = data.getData();
String filePath = getPath(this, videoURI);
result.add(filePath);
}
return result;
}
/**
* Get a file path from a Uri. This will get the the path for Storage Access
* Framework Documents, as well as the _data field for the MediaStore and
* other file-based ContentProviders.
*
* @param context The context.
* @param uri The Uri to query.
* @author paulburke
*/
@SuppressLint("NewApi")
public static String getPath(final Context context, final Uri uri) {
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
// DocumentProvider
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
// ExternalStorageProvider
if (isExternalStorageDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
if ("primary".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + "/" + split[1];
}
// TODO handle non-primary volumes
}
// DownloadsProvider
else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
final Uri contentUri = ContentUris.withAppendedId(
Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
return getDataColumn(context, contentUri, null, null);
}
// MediaProvider
else if (isMediaDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
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]
};
return getDataColumn(context, contentUri, selection, selectionArgs);
}
}
// MediaStore (and general)
else if ("content".equalsIgnoreCase(uri.getScheme())) {
// Return the remote address
if (isGooglePhotosUri(uri))
return uri.getLastPathSegment();
return getDataColumn(context, uri, null, null);
}
// File
else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
return null;
}
/**
* Get the value of the data column for this Uri. This is useful for
* MediaStore Uris, and other file-based ContentProviders.
*
* @param context The context.
* @param uri The Uri to query.
* @param selection (Optional) Filter used in the query.
* @param selectionArgs (Optional) Selection arguments used in the query.
* @return The value of the _data column, which is typically a file path.
*/
public static String getDataColumn(Context context, Uri uri, String selection,
String[] selectionArgs) {
Cursor cursor = null;
final String column = "_data";
final String[] projection = {
column
};
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
null);
if (cursor != null && cursor.moveToFirst()) {
final int index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is ExternalStorageProvider.
*/
public static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is DownloadsProvider.
*/
public static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is MediaProvider.
*/
public static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is Google Photos.
*/
public static boolean isGooglePhotosUri(Uri uri) {
return "com.google.android.apps.photos.content".equals(uri.getAuthority());
}
}
答案 1 :(得分：0)
这也可以
// Start The Mutli Image Picker Intent
Intent intent = new Intent(Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
intent.setType("video/*");
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE,
true);
final int RESULT_LOAD_IMAGE = 206;
activity.startActivityForResult(Intent.createChooser(intent,
"Select Picture"),
RESULT_LOAD_IMAGE);