我的Android应用应该提供通过谷歌驱动器共享文件的功能:
1)上传一个文件(之前从SD卡中选择)到谷歌驱动器
2)获取链接(url)到上传的文件
3)与应用的其他用户分享此链接
4)其他用户可以下载共享文件到他们设备的SD卡
所有这些功能都应该在应用程序中提供,而无需使用浏览器
有没有人知道如何实施步骤1,2和4?
提前谢谢!
格哈德
答案 0 :(得分:0)
这可以帮助您上传Google云端硬盘文件 -
首先,进行身份验证
AccountManager am = AccountManager.get(activity);
am.getAuthToken(am.getAccounts())[0],
"oauth2:" + DriveScopes.DRIVE,
new Bundle(),
true,
new OnTokenAcquired(),
null);
现在需要设置令牌
private class OnTokenAcquired implements AccountManagerCallback<Bundle> {
@Override
public void run(AccountManagerFuture<Bundle> result) {
try {
final String token = result.getResult().getString(AccountManager.KEY_AUTHTOKEN);
HttpTransport httpTransport = new NetHttpTransport();
JacksonFactory jsonFactory = new JacksonFactory();
Drive.Builder b = new Drive.Builder(httpTransport, jsonFactory, null);
b.setJsonHttpRequestInitializer(new JsonHttpRequestInitializer() {
@Override
public void initialize(JSonHttpRequest request) throws IOException {
DriveRequest driveRequest = (DriveRequest) request;
driveRequest.setPrettyPrint(true);
driveRequest.setKey(CLIENT ID YOU GOT WHEN SETTING UP THE CONSOLE BEFORE YOU STARTED CODING)
driveRequest.setOauthToken(token);
}
});
final Drive drive = b.build();
final com.google.api.services.drive.model.File body = new
com.google.api.services.drive.model.File();
body.setTitle("My Test File");
body.setDescription("A Test File");
body.setMimeType("text/plain");
final FileContent mediaContent = new FileContent("text/plain",
"Your data")
new Thread(new Runnable() {
public void run() {
try {
com.google.api.services.drive.model.File file =
drive.files().insert(body, mediaContent).execute();
alreadyTriedAgain = false;
} catch (IOException e) {
if (!alreadyTriedAgain) {
alreadyTriedAgain = true;
AccountManager am = AccountManager.get(activity);
am.invalidateAuthToken(am.getAccounts()[0].type, null); // Requires the permissions MANAGE_ACCOUNTS & USE_CREDENTIALS in the Manifest
am.getAuthToken (same as before...)
} else {
// Give up. Crash or log an error or whatever you want.
}
}
}
}).start();
Intent launch = (Intent)result.getResult().get(AccountManager.KEY_INTENT);
if (launch != null) {
startActivityForResult(launch, 3025);
return; // Not sure why... I wrote it here for some reason. Might not actually be necessary.
}
} catch (OperationCanceledException e) {
// Handle it...
} catch (AuthenticatorException e) {
// Handle it...
} catch (IOException e) {
// Handle it...
}
}
}
现在,要更新文件
public void updateFile(Drive drive, File gFile, java.io.File jFile) throws
IOException {
FileContent gContent = new FileContent("text/csv", jFile);
gFile.setModifiedDate(new DateTime(false, jFile.lastModified(), 0));
gFile = drive.files().update(gFile.getId(), gFile,
gContent).setSetModifiedDate(true).execute();
}
另外,不要在Manifest中为
授予权限GET_ACCOUNTS, USE_CREDENTIALS, MANAGE_ACCOUNTS, INTERNET WRITE_EXTERNAL_STORAGE