我已经在线检查了我的答案并从中形成了我的代码，但它不起作用。它启动了意图，但从图库中选择视频后不返回任何内容
这是我的活动
package com.memoir.premium.code.activities;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import com.memoir.premium.code.R;
import android.support.design.widget.*;
import android.support.v4.view.*;
import com.memoir.premium.code.fragments.*;
import android.support.v4.app.*;
import java.util.*;
import android.view.*;
import android.os.*;
import android.content.*;
import java.io.*;
import android.provider.*;
import android.net.*;
import android.database.*;
import android.util.*;
import android.annotation.*;
import android.widget.*;
import android.*;
import android.content.pm.*;
import cn.pedant.SweetAlert.*;
public class ImportResourcesActivity extends AppCompatActivity {
private TabLayout tabLayout;
private ViewPager viewPager;
private int[] tabIcons = {
R.drawable.video_icon,
R.drawable.image_icon
};
private FloatingActionButton fab_add;
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
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.import_resources_activity);
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
setupTabIcons();
fab_add = findViewById(R.id.fab_add);
fab_add.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
checkPermission();
}
});
}
public void checkPermission(){
if(this!=null){
if(ActivityCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)== PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE)== PackageManager.PERMISSION_GRANTED){
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.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
intent.setType("video/mp4");
this.startActivityForResult(Intent.createChooser(intent,"Select Videos"), SELECT_VIDEOS_KITKAT);
}
}
else {
ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.READ_EXTERNAL_STORAGE},100);
}}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if(requestCode==100 && (grantResults.length>0) && (grantResults[0]==PackageManager.PERMISSION_GRANTED) && (grantResults[1]==PackageManager.PERMISSION_GRANTED)){
//When permission granted
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);
}
}
else {
new SweetAlertDialog(this, SweetAlertDialog.WARNING_TYPE)
.setTitleText("Alert")
.setContentText("App cannot function without you granting this permission so please grant it")
.show();
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode,resultCode,data);
if (resultCode == RESULT_OK) {
selectedVideos = getSelectedVideos(data);
for(int i = 0;selectedVideos.size()< i;i++){
File vidFile = new File(selectedVideos.get(i));
vidFile.renameTo(new File(Environment.getExternalStorageDirectory()+File.separator+"."+"memories/videos/"+vidFile.getName()));
showToast("Sucess "+vidFile.getName());
}
}
}
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;
}
/**
* 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());
}
public void showToast(String str){
Toast.makeText(getApplicationContext(),str,Toast.LENGTH_LONG).show();
}
private void setupTabIcons() {
tabLayout.getTabAt(0).setIcon(tabIcons[0]);
tabLayout.getTabAt(1).setIcon(tabIcons[1]);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFragment(new Videos(), "VIDEOS");
adapter.addFragment(new Images(), "IMAGES");
viewPager.setAdapter(adapter);
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
}
这是我的活动，它运行意图，但它不返回任何内容，我想获取所选视频的路径并将它们重命名为我创建的隐藏文件夹，请任何人帮忙。
您可以通过以下代码选择多个视频，并在活动结果上获取文件的uri
private void selectMultipleVideos() {
Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
intent.setType("video/*");
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
startActivityForResult(intent, REQUEST_CODE_SELECT_VIDEOS);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_CODE_SELECT_VIDEOS && resultCode == RESULT_OK) {
if (data != null) {
if (data.getClipData() != null) {
// Multiple videos were selected
int count = data.getClipData().getItemCount();
for (int i = 0; i < count; i++) {
Uri videoUri = data.getClipData().getItemAt(i).getUri();
// Process the selected video Uri
}
} else if (data.getData() != null) {
// Single video was selected
Uri videoUri = data.getData();
// Process the selected video Uri
}
}
}
}
如果您有任何疑问，请告诉我