The Code is given below,I am getting problem to upload a text file What I able to do -Authentication is working good -Entry response = null;
try {
response = mDBApi.putFile("/file1234.txt", inputStream,
file.length(), null, null);
} catch (DropboxException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.i("DbExampleLog", "The uploaded file's rev is: " + response.rev);
In this Part having the error as NullPointerException in response object
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import com.dropbox.client2.DropboxAPI;
import com.dropbox.client2.DropboxAPI.Entry;
import com.dropbox.client2.android.AndroidAuthSession;
import com.dropbox.client2.exception.DropboxException;
import com.dropbox.client2.session.AppKeyPair;
public class MainActivity extends ActionBarActivity {
final static private String APP_KEY = "xxxxxxxxxxx";
final static private String APP_SECRET = "xxxxxxxxxxx";
// In the class declaration section:
private DropboxAPI<AndroidAuthSession> mDBApi;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initDropBox();
}
public void initDropBox() {
AppKeyPair appKeys = new AppKeyPair(APP_KEY, APP_SECRET);
AndroidAuthSession session = new AndroidAuthSession(appKeys);
mDBApi = new DropboxAPI<AndroidAuthSession>(session);
mDBApi.getSession().startOAuth2Authentication(MainActivity.this);
uploadFile();
}
public void uploadFile() {
File file = new File("/storage/emulated/0/file.txt");
FileInputStream inputStream = null;
try {
inputStream = new FileInputStream(file);
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
Entry response = null;
try {
response = mDBApi.putFile("/file1234.txt", inputStream,
file.length(), null, null);
} catch (DropboxException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.i("DbExampleLog", "The uploaded file's rev is: " + response.rev);
}
public void click(View v) {
switch (v.getId()) {
case R.id.button1: {
// MyActivity below should be your activity class name
dropBoxPreference = getSharedPreferences("dropBoxPref",
MODE_MULTI_PROCESS);
// if (dropBoxPreference.getString("accessToken", null) == null) {
//uploadFile();
// }
break;
}
case R.id.button2: {
}
}
}
SharedPreferences dropBoxPreference;
Editor editor;
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
if (mDBApi.getSession().authenticationSuccessful()) {
try {
// Required to complete auth, sets the access token on the
// session
mDBApi.getSession().finishAuthentication();
String accessToken = mDBApi.getSession().getOAuth2AccessToken();
/**
* You'll need this token again after your app closes, so it's
* important to save it for future access (though it's not shown
* here). If you don't, the user will have to re-authenticate
* every time they use your app. A common way to implement
* storing keys is through Android's SharedPreferences API.
*/
// dropBoxPreference = getSharedPreferences("dropBoxPref",
// MODE_MULTI_PROCESS);
// editor = dropBoxPreference.edit();
// String checkToken =
// dropBoxPreference.getString("accessToken",
// null);
// if (checkToken == null) {
// editor.putString("accessToken", accessToken);
// editor.commit();
// }
} catch (IllegalStateException e) {
Log.i("DbAuthLog", "Error authenticating", e);
}
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
Any Help Appreciated...Thanks in Advance.
Here is the Solution for the above question which is asked by me itself.
->Call uploadFile() and downLoadFile() method in child thread otherwise it will give you exception ->For that use AsyncTask and call these above method in doInBackground method.
hope,this will helpful to many people.Thanks