我正在使用以下代码上传图像，但它不起作用。在以下代码中，try 块显示错误并且文件值将为空任何人都可以帮助我解决问题。
public class MainActivity extends Activity {
static final int REQUEST_ACCOUNT_PICKER = 1;
static final int REQUEST_AUTHORIZATION = 2;
static final int CAPTURE_IMAGE = 3;
private static final int TAKE_PICTURE = 2;
ImageView im;
private static Uri fileUri;
java.io.File fileContent;
FileContent mediaContent;
java.io.File f;
File body;
File nfile;
File file;
private static Drive service;
private GoogleAccountCredential credential;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
im=(ImageView)findViewById(R.id.imageView1);
credential = GoogleAccountCredential.usingOAuth2(this, DriveScopes.DRIVE);
startActivityForResult(credential.newChooseAccountIntent(), REQUEST_ACCOUNT_PICKER);
}
@Override
protected void onActivityResult(final int requestCode, final int resultCode, final Intent data) {
switch (requestCode) {
case REQUEST_ACCOUNT_PICKER:
if (resultCode == RESULT_OK && data != null && data.getExtras() != null) {
String accountName = data.getStringExtra(AccountManager.KEY_ACCOUNT_NAME);
if (accountName != null) {
credential.setSelectedAccountName(accountName);
service = getDriveService(credential);
startCameraIntent();
}
}
break;
case REQUEST_AUTHORIZATION:
Toast.makeText(getApplicationContext(), ""+REQUEST_AUTHORIZATION,100).show();
if (resultCode == Activity.RESULT_OK) {
saveFileToDrive();
} else {
startActivityForResult(credential.newChooseAccountIntent(), REQUEST_ACCOUNT_PICKER);
}
break;
case CAPTURE_IMAGE:
if (resultCode == Activity.RESULT_OK) {
saveFileToDrive();
}
}
}
private void startCameraIntent() {
String mediaStorageDir = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES).getPath();
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US).format(new Date(0, 0, 0));
f=new java.io.File(Environment.getExternalStorageDirectory(),"test"+timeStamp+".jpg");
fileUri=Uri.fromFile(f);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
startActivityForResult(cameraIntent,TAKE_PICTURE);
}
private void saveFileToDrive() {
Toast.makeText(getApplicationContext(), "start",100).show();
Thread t = new Thread(new Runnable() {
@Override
public void run() {
try
{
// File's binary content
fileContent = new java.io.File(fileUri.getPath());
mediaContent= new FileContent("image/jpeg", fileContent);
body=new File();
body.setTitle(fileContent.getName());
body.setMimeType("image/jpeg");
//file=body;
file= service.files().insert(body, mediaContent).execute();
//file=service.files().insert(body).execute();
showToast("try run: ");
if (file!=null)
{
showToast("Photo uploaded: " + file.getTitle());
startCameraIntent();
}
else
{
showToast("error");
}
}
catch (UserRecoverableAuthIOException e) {
startActivityForResult(e.getIntent(), REQUEST_AUTHORIZATION);
showToast("first catch");
} catch (IOException e) {
e.printStackTrace();
showToast("second catch"+file);
}
finally
{
showToast("finally");
}
}
});
t.start();
}
private Drive getDriveService(GoogleAccountCredential credential) {
return new Drive.Builder(AndroidHttp.newCompatibleTransport(), new GsonFactory(), credential)
.build();
}
public void showToast(final String toast) {
runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(getApplicationContext(),toast,100).show();
}
});
};
}
或者有什么方法可以将文件从 android 应用程序发送到谷歌驱动器。