Menu
This API is deprecated. Clients must migrate to the Drive REST API or another suitable solution to avoid disruptions to your application.
- How To Download Folder In Google Drive Android
- How To Download Folder From Google Drive Android
- Install Google Drive
By far the easiest way to find downloaded files on Android is to look in your app drawer for an app called Files or My Files. Google's Pixel phones come with a Files app, while Samsung phones come. Download a file. On your Android phone or tablet, open the Google Drive app. Next to the file's name, tap More Download. If you can't download a file. If you can't download a file, the owner may have disabled options to print, download, or copy for people with commenting or viewing access. Download files from Google Drive using a computer or an Android device. Download a file. Go to drive.google.com. Click a file to download. To download multiple files, press Command (Mac) or Ctrl. You can store your files securely and open or edit them from any device using Google Drive. Get started with Google Drive. You get 15 GB of space in your Drive for free. Learn what takes up space in Google Drive and where to buy more space. Step 1: Open the app. On your Android device, find and open the Google Drive app. In 'My Drive,' you’ll.
Files in the Google Drive Android API, represented by the
DriveFile
interface, are specializedresources with Metadata
, aDriveId
, andDriveContents
. The binary content ofa file is encapsulated in the DriveContents
class.You can choose to work with the file contents either by using the
InputStream
and OutputStream
classes, or by working with the ParcelFileDescriptor
.The access methods available to you depend on the mode the file was opened in.Mode | Method | Class |
---|---|---|
MODE_READ_ONLY | getInputStream | InputStream |
MODE_WRITE_ONLY | getOutputStream | OutputStream |
MODE_READ_WRITE | getParcelFileDescriptor | ParcelFileDescriptor |
ParcelFileDescriptor
class is generally best suitedfor applications with dependencies or native-code that use aFileDescriptor
.Lifecycle of a Drive file
The Drive Android API lets your app access files even if the deviceis offline. To support offline cases, the API implements a syncengine that runs in the background to merge upstream and downstream changesas network access is available and to resolve conflicts.
The lifecycle of a
DriveFile
object:- Perform an initial download request if the file is not yet synced tothe local context but the user wants to open the file. The API handles thisautomatically when a file is requested.
- Open the contents of a file. This creates a temporary duplicate of thefile's binary stream that is only available to your application.
- Read or modify the file contents, making changes to the temporary duplicate.
- Commit or discard any file content changes that have been made.
- If there are changes, the Drive service puts the file contents into a queuefor upload to sync them back to the server.
Reading files
Because the Drive Android API automatically handles downloading the filecontents if the file has not been synced locally, the process of readingfrom a file is similar to using local storage. The basic steps to read afile are:
- Retrieve the
DriveFile
object. - Open the file contents.
- Retrieve and process the contents using the
InputStream
or theParcelFileDescriptor
class, depending on the mode used.
Opening the file contents
In order to be able to read a file, you must start by opening its
Note: The DriveContents
resource in DriveFile.MODE_READ_ONLY
orDriveFile.MODE_READ_WRITE
mode, depending on whether you prefer to work withthe InputStream
or ParcelFileDescriptor
class.InputStream
class is only available for files opened inREAD_ONLY
mode. Files opened with READ_WRITE
must use theParcelFileDescriptor
class to read from the file.The
DriveResourceClient.openFile
method retrieves the locally synced fileresource and opens it. If the file is not synced with the local storage,it retrieves the file from the Drive service and returns a DriveContents
resource. For example:How To Download Folder In Google Drive Android
drive/demos/app/src/main/java/com/google/android/gms/drive/sample/demo/RetrieveContentsActivity.java
A
DriveContents
resource contains a temporary copy of the file's binary streamthat is only available to your application. If multiple applications attempt toaccess the same file, there are no race conditions between DriveContents
resources. In this situation, the last write operation is the finalstate of the content.Handling the response requires you to check if the call was successful.If the call was successful, you can retrieve the
DriveContents
resource. Thisresource contains methods to retrieve an InputStream
or ParcelFileDescriptor
to read the file's binary contents.The following example demonstrates how to retrieve a file's
DriveContents
:drive/demos/app/src/main/java/com/google/android/gms/drive/sample/demo/RetrieveContentsActivity.java
Listening to the download progress
Opening a file can require a long I/O operation if the file is not yet syncedlocally. You can attach a
OpenFileCallback
to inform users of thedownload progress in a ProgressDialog
to improve the user experience.To listen to the download progress, open the file contents with a
DownloadProgressListener
, as shown in this example:drive/demos/app/src/main/java/com/google/android/gms/drive/sample/demo/RetrieveContentsWithProgressDialogActivity.java
In the event that the file has already been synced locally, the system does notcall the
onProgress
listener.Reading from the input stream
A
DriveContents
resource provides a java.io.InputStream
you can use to readthe binary contents of the opened file. The sample below illustrates how to readfrom a DriveContents
resource and convert the binary contents into a String
object. However, you can consume the input stream in whatever way yourapplication and data format require.drive/demos/app/src/main/java/com/google/android/gms/drive/sample/demo/RetrieveContentsActivity.java
Writing files
Writing to a file follows a similar procedure to reading a file, with thedifference being that you use either the
Note: The OutputStream
or theParcelFileDescriptor
class to write to the file, determined by the mode youopened the file in.OutputStream
class is only available for files opened inWRITE_ONLY
mode. Files opened with READ_WRITE
must use theParcelFileDescriptor
class to write to the file.Opening the file contents
Just as with reading files, you must open contents in order to write to a file.You can use either the
DriveFile.MODE_WRITE_ONLY
or DriveFile.MODE_READ_WRITE
to open the contents in a writable mode, depending on whether you intend tooverwrite the content with an OutputStream
or append to the content with aParcelFileDescriptor
. You can optionally use a OpenFileCallback
tolisten to the download statusif the latest version of the file is not already synced to the device.Download software virtual dj for android. The following example shows how to open and retrieve the file contents:
drive/demos/app/src/main/java/com/google/android/gms/drive/sample/demo/AppendContentsActivity.java
Your application must handle the opening call to verify that the
DriveContents
resource is successfully opened. Once the contents are open, you can makemodifications to them.Making modifications
The
Note: Files opened in DriveContents
resource provides a java.io.OutputStream
that lets you writeor append binary data to the file contents.WRITE_ONLY
mode are truncated before anything is written tothe file. To append to a file open it in READ_WRITE
mode.The example below illustrates how to append 'Hello world' to a
DriveContents
object.drive/demos/app/src/main/java/com/google/android/gms/drive/sample/demo/AppendContentsActivity.java
Each
DriveContents
resource is a temporary duplicate of the file you are tryingto modify and is only accessible within your application. Once you're donewith the output stream, you must either commit any changes that you made, makingthem visible in the user's Drive, or discard the changes.The next section demonstrates how to finalize the write operation.Feb 04, 2015 Download Home Button 4.1. A virtual home button for your device. Home Button lets you place a home button anywhere on your screen and customize it with different looks so that it matches your desktop's style. The app is very lightweight (it takes up. Home button for android apk free download.
Closing the file contents
You must close each opened
Note: If you open a file read-only mode, committing and discarding thecontents are equivalent, because no changes can be made.DriveContents
resource to free related resources,notifying the system whether you want to keep or discard any changes made. Inorder the keep the changes permanently, use theDriveResourceClient.commitContents
method, passing in the DriveContents
object to close.You can also use this method to submit simultaneousmetadata changes. For example:
drive/demos/app/src/main/java/com/google/android/gms/drive/sample/demo/AppendContentsActivity.java
To discard the changes you made to the temporary
DriveContents
resource, use theDriveResourceClient.discardContents
method to avoid writing changes to the file in the user's Drive.How To Download Folder From Google Drive Android
drive/demos/app/src/main/java/com/google/android/gms/drive/sample/demo/RetrieveContentsActivity.java
Install Google Drive
Any committed changes are synced to the user's Drive on the next scheduled sync task.