android-使用GD API将大文件上传到Google云端硬盘
作者:互联网
我想使用新的Android云端硬盘API以编程方式将大文件上传到Google云端硬盘.您能为我推荐一个具有最佳实践的教程吗?
我正在读取此post on stack overflow,但在那里使用缓冲区将它们加载到内存中.
解决方法:
我一直以quick start from Google为起点.它显示了如何上传位图,但很容易适应.他们还会将整个内容保存为字节数组,然后将其写入Google云端硬盘的输出流.如果您不想执行此操作,那么我建议您执行以下操作:
/**
* Create a new file and save it to Drive.
*/
private void saveFileToDrive(final File file) {
// Start by creating a new contents, and setting a callback.
Log.i(TAG, "Creating new contents.");
Drive.DriveApi.newDriveContents(mGoogleApiClient)
.setResultCallback(new ResultCallback<DriveApi.DriveContentsResult>() {
@Override
public void onResult(DriveApi.DriveContentsResult result) {
// If the operation was not successful, we cannot do anything
// and must
// fail.
if (!result.getStatus().isSuccess()) {
Log.i(TAG, "Failed to create new contents.");
return;
}
// Otherwise, we can write our data to the new contents.
Log.i(TAG, "New contents created.");
// Get an output stream for the contents.
OutputStream outputStream = result.getDriveContents().getOutputStream();
// Write the bitmap data from it.
try {
FileInputStream fileInputStream = new FileInputStream(file);
byte[] buffer = new byte[1024];
int bytesRead;
while ((bytesRead = fileInputStream.read(buffer)) != -1)
{
outputStream.write(buffer, 0, bytesRead);
}
} catch (IOException e1) {
Log.i(TAG, "Unable to write file contents.");
}
// Create the initial metadata - MIME type and title.
// Note that the user will be able to change the title later.
MetadataChangeSet metadataChangeSet = new MetadataChangeSet.Builder()
.setTitle(file.getName()).build();
// Create an intent for the file chooser, and start it.
IntentSender intentSender = Drive.DriveApi
.newCreateFileActivityBuilder()
.setInitialMetadata(metadataChangeSet)
.setInitialDriveContents(result.getDriveContents())
.build(mGoogleApiClient);
try {
startIntentSenderForResult(
intentSender, REQUEST_CODE_CREATOR, null, 0, 0, 0);
} catch (IntentSender.SendIntentException e) {
Log.i(TAG, "Failed to launch file chooser.");
}
}
});
}
通过快速入门中的设置,您可以使用此方法上传文件.
标签:android,google-drive-api 来源: https://codeday.me/bug/20191013/1909096.html