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Merge "Add ability to rename a downloaded file." into nyc-dev

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This commit is contained in:
Ben Lin
2016-05-02 22:54:20 +00:00
committed by Android (Google) Code Review
parent 5a7abbc3a2 726bf6a3ce
commit d88030fe9e
1 changed files with 82 additions and 0 deletions
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82
core/java/android/app/DownloadManager.java
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@@ -16,12 +16,14 @@
package android.app;
import android.annotation.Nullable;
import android.annotation.SdkConstant;
import android.annotation.SdkConstant.SdkConstantType;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.database.CursorWrapper;
import android.net.ConnectivityManager;
@@ -29,9 +31,11 @@ import android.net.NetworkPolicyManager;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.os.FileUtils;
import android.os.ParcelFileDescriptor;
import android.provider.Downloads;
import android.provider.Settings;
import android.provider.MediaStore.Images;
import android.provider.Settings.SettingNotFoundException;
import android.text.TextUtils;
import android.util.Pair;
@@ -1185,6 +1189,84 @@ public class DownloadManager {
}
}
/**
* Rename the given download if the download has completed
*
* @param context the {@link Context} to use in case need to update MediaProvider
* @param id the downloaded id
* @param displayName the new name to rename to
* @return true if rename was successful, false otherwise
* @hide
*/
public boolean rename(Context context, long id, String displayName) {
if (!FileUtils.isValidFatFilename(displayName)) {
throw new SecurityException(displayName + " is not a valid filename");
}
Query query = new Query().setFilterById(id);
Cursor cursor = null;
String oldDisplayName = null;
String mimeType = null;
try {
cursor = query(query);
if (cursor == null) {
return false;
}
if (cursor.moveToFirst()) {
int status = cursor.getInt(cursor.getColumnIndexOrThrow(COLUMN_STATUS));
if (DownloadManager.STATUS_SUCCESSFUL != status) {
return false;
}
oldDisplayName = cursor.getString(cursor.getColumnIndexOrThrow(COLUMN_TITLE));
mimeType = cursor.getString(cursor.getColumnIndexOrThrow(COLUMN_MEDIA_TYPE));
}
} finally {
if (cursor != null) {
cursor.close();
}
}
if (oldDisplayName == null || mimeType == null) {
throw new IllegalStateException(
"Document with id " + id + " does not exist");
}
final File parent = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_DOWNLOADS);
final File before = new File(parent, oldDisplayName);
final File after = new File(parent, displayName);
if (after.exists()) {
throw new IllegalStateException("Already exists " + after);
}
if (!before.renameTo(after)) {
throw new IllegalStateException("Failed to rename to " + after);
}
// Update MediaProvider if necessary
if (mimeType.startsWith("image/")) {
context.getContentResolver().delete(Images.Media.EXTERNAL_CONTENT_URI,
Images.Media.DATA + "=?",
new String[] {
before.getAbsolutePath()
});
Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
intent.setData(Uri.fromFile(after));
context.sendBroadcast(intent);
}
ContentValues values = new ContentValues();
values.put(Downloads.Impl.COLUMN_TITLE, displayName);
values.put(Downloads.Impl._DATA, after.toString());
values.putNull(Downloads.Impl.COLUMN_MEDIAPROVIDER_URI);
long[] ids = {id};
return (mResolver.update(mBaseUri, values, getWhereClauseForIds(ids),
getWhereArgsForIds(ids)) == 1);
}
/**
* Returns recommended maximum size, in bytes, of downloads that may go over a mobile
* connection; or null if there's no recommended limit. The user will have the option to bypass