Develop Reference

Sending data to a server

So I'm going to post the simple code to a program I'm writing. Here is my question. I think I'm connecting to my server just fine (Because I'm posting this online I will replace the server address with a fake one) and I want to know if I'm actually sending the variables to the server. I am sending the data to a PHP server using this string ("?systemid=demo&pwd=demo&reason=do%20something&qnumber=A36"). This is hard-coded for testing purposes. My question is, am I actually sending the data? There doesn't seem to be a send() method. Please excuse my ignorance. I'm new to Android.
My thought was that when I write to the OutputStream, I am also sending the data. Please take a look
public class PrintTicketActivity extends AppCompatActivity {
private static final String TAG2 = "PrintTicketActivity";
Context mContext;
Button mButtonA, mButtonB, mButtonC, mButtonD, mButtonE, mButtonF;
List<Button> mButtons;
List<PrintJob> mPrintJobs;
WebView mWebView;
int printJobNum = 1;
// here i'm initializing the variables with an arbitrary value so the compiler won't complain
// that they may have not been initialized in the button's onclick listeners
// these values are overwritten from sharedPreferences anyway.....the file will always exist unless there is a major problem
int numA, numB, numC, numD, numE, numF;
String buttonA, buttonB, buttonC, buttonD, buttonE, buttonF;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_print_ticket);
mContext = this;
mButtons = new ArrayList<>();
mPrintJobs = new ArrayList<>();
mButtonA = (Button) findViewById(R.id.button_a);
mButtonB = (Button) findViewById(R.id.button_b);
mButtonC = (Button) findViewById(R.id.button_c);
mButtonD = (Button) findViewById(R.id.button_d);
mButtonE = (Button) findViewById(R.id.button_e);
mButtonF = (Button) findViewById(R.id.button_f);
// add the buttons to the list so we can check later to see if any of the buttons has empty text
// and then hide the button if it is empty
mButtons.add(mButtonA);
mButtons.add(mButtonB);
mButtons.add(mButtonC);
mButtons.add(mButtonD);
mButtons.add(mButtonE);
mButtons.add(mButtonF);
// check for the start up file
File file = new File("data/data/com.myDomain.myProgram/shared_prefs/start.xml");
if (file.exists()) {
// place text from preferences on the buttons
updateUI();
} else {
Toast.makeText(mContext, "Something went wrong", Toast.LENGTH_SHORT).show();
}
mButtonA.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
executeQueue(NUMBER_A, numA, "A", mButtonA);
new SendQueueToServer().execute();
}
});
mButtonB.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
executeQueue(NUMBER_B, numB, "B", mButtonB);
}
});
mButtonC.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
executeQueue(NUMBER_C, numC, "C", mButtonC);
}
});
mButtonD.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
executeQueue(NUMBER_D, numD, "D", mButtonD);
}
});
mButtonE.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
executeQueue(NUMBER_E, numE, "E", mButtonE);
}
});
mButtonF.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
executeQueue(NUMBER_F, numF, "F", mButtonF);
}
});
}
private void executeQueue(String prefKey, int num, String category, Button button) {
printTicket(button.getText().toString(), category + num);
// increment the number after printing the ticket
++num;
// update the number in the shared preferences
SharedPreferences.Editor editor = getSharedPreferences(MY_PREFS, MODE_PRIVATE).edit();
editor.putInt(prefKey, num);
editor.apply();
// update the UI to get an updated version of the queue number
updateUI();
}
private void updateUI() {
SharedPreferences preferences = getSharedPreferences(MY_PREFS, MODE_PRIVATE);
buttonA = preferences.getString(A, "");
buttonB = preferences.getString(B, "");
buttonC = preferences.getString(C, "");
buttonD = preferences.getString(D, "");
buttonE = preferences.getString(E, "");
buttonF = preferences.getString(F, "");
numA = preferences.getInt(NUMBER_A, 1);
numB = preferences.getInt(NUMBER_B, 1);
numC = preferences.getInt(NUMBER_C, 1);
numD = preferences.getInt(NUMBER_D, 1);
numE = preferences.getInt(NUMBER_E, 1);
numF = preferences.getInt(NUMBER_F, 1);
mButtonA.setText(buttonA);
mButtonB.setText(buttonB);
mButtonC.setText(buttonC);
mButtonD.setText(buttonD);
mButtonE.setText(buttonE);
mButtonF.setText(buttonF);
// if a button doesn't have anything assigned to it, hide the button
for (Button button : mButtons) {
if (button.getText().equals("")) {
button.setVisibility(View.GONE);
}
}
}
private void printTicket(String queueTitle, String queueCategory) {
// create a WebView object for printing
WebView webView = new WebView(mContext);
webView.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return false;
}
#Override
public void onPageFinished(WebView view, String url) {
Log.i(TAG2, "page finished loading " + url);
createWebPrintJob(view);
mWebView = null;
}
});
String html = "<html><body><h2 style=\"text-align:center;font-size:60px\">" + queueTitle + "</h2><h1 style=\"text-align:center" +
";font-size:200px\">" +
queueCategory + "</h1>";
webView.loadDataWithBaseURL(null, html, "text/HTML", "UTF-8", null);
// Keep a reference to WebView object until you pass the PrintDocumentAdapter
// to the PrintManager
mWebView = webView;
}
#SuppressWarnings("deprecation")
private void createWebPrintJob(WebView webView) {
PrintManager printManager = (PrintManager) mContext.getSystemService(Context.PRINT_SERVICE);
// Get a print adapter instance
PrintDocumentAdapter printAdapter;
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
printAdapter = webView.createPrintDocumentAdapter("print_job_num" + printJobNum);
printJobNum++;
} else {
printAdapter = webView.createPrintDocumentAdapter();
printJobNum++;
}
// Create a print job with name and adapter instance
String jobName = getString(R.string.app_name) + " Document";
PrintJob printJob = printManager.print(jobName, printAdapter,
new PrintAttributes.Builder().build());
// save for status checking later
mPrintJobs.add(printJob);
}
#Override
protected void onResume() {
super.onResume();
updateUI();
}
// #Override
// public void onBackPressed() {
// // don't add superclass constructor
// // I am disabling the back button here
// }
private class SendQueueToServer extends AsyncTask<String, String, String> {
#Override
protected String doInBackground(String... params) {
OutputStream out = null;
String urlParameters = "?systemid=demo&pwd=demo&reason=do%20something&qnumber=A36";
HttpsURLConnection connection = null;
try {
URL url = new URL("https://www.example.com/php");
connection = (HttpsURLConnection) url.openConnection();
connection.setRequestMethod("POST");
connection.setDoOutput(true);
connection.connect();
out = new DataOutputStream(connection.getOutputStream());
BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(out, "UTF-8"));
writer.write(urlParameters);
writer.flush();
writer.close();
Log.d(TAG2, " and the response is: " + connection.getResponseMessage());
Log.d(TAG2, "you are connected and good to go");
} catch (IOException e) {
e.printStackTrace();
} finally {
assert connection != null;
connection.disconnect();
}
return null;
}
}
}

The url parameters indicates that you are trying to make a GET request and this is not proper procedure to make an HTTP GET request. You don't need to write anything to the OutputStreamWriter if you are making a GET request. Here's a template for the same:
URL url;
HttpURLConnection urlConnection = null;
String urlParameters = "?systemid=demo&pwd=demo&reason=do%20something&qnumber=A36";
try {
url = new URL("https://www.example.com/php"+urlParameters);
urlConnection = (HttpURLConnection) url
.openConnection();
//use this block of code in case you are looking for some response from your server
InputStream in = urlConnection.getInputStream();
InputStreamReader isw = new InputStreamReader(in);
int data = isw.read();
while (data != -1) {
char current = (char) data;
data = isw.read();
System.out.print(current);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
}

You can use Retrofit Library to send data to Server. It's very easy to communicate with Server using this library.
Visit http://square.github.io/retrofit/ for tutorial on how to use this library in Android/Java.

Document Missing - Google Cloud Print

I am trying to use google cloud print with my project on android studio to print out a pdf file. I am storing the file in the assets folder of the project and when I go to print it say "Document Missing". this is my java code:
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void onPrintClick(View v) {
String path = Environment.getExternalStorageDirectory().getAbsolutePath()
+ "/monsoon.pdf";
File file = new File(path);
if (file.exists()) {
Uri uri = Uri.fromFile(file);
Intent printIntent = new Intent(this, PrintDialogActivity.class);
printIntent.setDataAndType(uri, "application/pdf");
printIntent.putExtra("title", "Gaurang");
startActivity(printIntent);
} else {
Toast.makeText(getApplicationContext(), "No file",
Toast.LENGTH_SHORT).show();
}
}
}
and Here is Android Code for Google Cloud Print with some modification on class PrintDialogJavaScriptInterface...ie. applying annotations #JavascriptInterface
public class PrintDialogActivity extends Activity {
private static final String PRINT_DIALOG_URL = "https://www.google.com/cloudprint/dialog.html";
private static final String JS_INTERFACE = "AndroidPrintDialog";
private static final String CONTENT_TRANSFER_ENCODING = "base64";
private static final String ZXING_URL = "http://zxing.appspot.com";
private static final int ZXING_SCAN_REQUEST = 65743;
/**
* Post message that is sent by Print Dialog web page when the printing
* dialog needs to be closed.
*/
private static final String CLOSE_POST_MESSAGE_NAME = "cp-dialog-on-close";
/**
* Web view element to show the printing dialog in.
*/
private WebView dialogWebView;
/**
* Intent that started the action.
*/
Intent cloudPrintIntent;
#Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.activity_print_dialog);
dialogWebView = (WebView) findViewById(R.id.webview);
cloudPrintIntent = this.getIntent();
WebSettings settings = dialogWebView.getSettings();
settings.setJavaScriptEnabled(true);
dialogWebView.setWebViewClient(new PrintDialogWebClient());
dialogWebView.addJavascriptInterface(
new PrintDialogJavaScriptInterface(), JS_INTERFACE);
dialogWebView.loadUrl(PRINT_DIALOG_URL);
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
if (requestCode == ZXING_SCAN_REQUEST && resultCode == RESULT_OK) {
dialogWebView.loadUrl(intent.getStringExtra("SCAN_RESULT"));
}
}
final class PrintDialogJavaScriptInterface {
#JavascriptInterface
public String getType() {
return cloudPrintIntent.getType();
}
#JavascriptInterface
public String getTitle() {
return cloudPrintIntent.getExtras().getString("title");
}
#JavascriptInterface
public String getContent() {
try {
ContentResolver contentResolver = getContentResolver();
InputStream is = contentResolver
.openInputStream(cloudPrintIntent.getData());
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[4096];
int n = is.read(buffer);
while (n >= 0) {
baos.write(buffer, 0, n);
n = is.read(buffer);
}
is.close();
baos.flush();
return Base64
.encodeToString(baos.toByteArray(), Base64.DEFAULT);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return "";
}
#JavascriptInterface
public String getEncoding() {
return CONTENT_TRANSFER_ENCODING;
}
#JavascriptInterface
public void onPostMessage(String message) {
if (message.startsWith(CLOSE_POST_MESSAGE_NAME)) {
finish();
}
}
}
private final class PrintDialogWebClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url.startsWith(ZXING_URL)) {
Intent intentScan = new Intent(
"com.google.zxing.client.android.SCAN");
intentScan.putExtra("SCAN_MODE", "QR_CODE_MODE");
try {
startActivityForResult(intentScan, ZXING_SCAN_REQUEST);
} catch (ActivityNotFoundException error) {
view.loadUrl(url);
}
} else {
view.loadUrl(url);
}
return false;
}
#Override
public void onPageFinished(WebView view, String url) {
if (PRINT_DIALOG_URL.equals(url)) {
// Submit print document.
view.loadUrl("javascript:printDialog.setPrintDocument(printDialog.createPrintDocument("
+ "window."
+ JS_INTERFACE
+ ".getType(),window."
+ JS_INTERFACE
+ ".getTitle(),"
+ "window."
+ JS_INTERFACE
+ ".getContent(),window."
+ JS_INTERFACE
+ ".getEncoding()))");
// Add post messages listener.
view.loadUrl("javascript:window.addEventListener('message',"
+ "function(evt){window." + JS_INTERFACE
+ ".onPostMessage(evt.data)}, false)");
}
}
}
}

I see two things that might be wrong.
In the getContent method you have return "";
when you send the PDF in the onPrintClick method, you are not converting the PDF to base64.
I hope I spotted something interesting :)

how to post text image into twitter same time in android

Hi i did one application here i need to share my score on twiter,i did using below code my score is posing fine,but now i need to share score along with app icon.but i dont know how to share that image along with text can any one help me,thankyou
TestPost.class:
public class TestPost extends Activity {
String review;
private TwitterApp mTwitter;
private String username = "";
private boolean postToTwitter = false;
private static final String twitter_consumer_key = "";
private static final String twitter_secret_key = "";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.post);
Button postBtn = (Button) findViewById(R.id.button1);
final EditText reviewEdit = (EditText) findViewById(R.id.revieew);
postBtn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
review = reviewEdit.getText().toString();
postToTwitter = true;
onTwitterClick();
}
});
mTwitter = new TwitterApp(this, twitter_consumer_key,twitter_secret_key);
mTwitter.setListener(mTwLoginDialogListener);
if (mTwitter.hasAccessToken()) {
username = mTwitter.getUsername();
username = (username.equals("")) ? "No Name" : username;
}
}
private void postToTwitter(final String review) {
new Thread() {
#Override
public void run() {
int what = 0;
try {
mTwitter.updateStatus(review);
} catch (Exception e) {
what = 1;
}
mHandler.sendMessage(mHandler.obtainMessage(what));
}
}.start();
}
private Handler mHandler = new Handler() {
#Override
public void handleMessage(Message msg) {
String text = (msg.what == 0) ? "Posted to Twitter" : "Post to Twitter failed";
Toast.makeText(TestPost.this, text, Toast.LENGTH_SHORT).show();
}
};
private final TwDialogListener mTwLoginDialogListener = new TwDialogListener() {
#Override
public void onComplete(String value) {
username = mTwitter.getUsername();
username = (username.equals("")) ? "No Name" : username;
postToTwitter = true;
postToTwitter(review);
Toast.makeText(TestPost.this, "Connected to Twitter as " + username, Toast.LENGTH_LONG).show();
}
#Override
public void onError(String value) {
Toast.makeText(TestPost.this, "Twitter connection failed", Toast.LENGTH_LONG).show();
}
};
private void onTwitterClick() {
if (mTwitter.hasAccessToken()) {
final AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("Delete current Twitter connection?")
.setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
mTwitter.resetAccessToken();
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
final AlertDialog alert = builder.create();
alert.show();
} else {
mTwitter.authorize();
}
}
}

This is how I upload an Image along with text to the logged in Twitter User's account. I make use of the TwitPic API for that. You will have to login and register a developer account there.
The solution can be thought of as a two step solution.
First, when the user clicks the post button, I first grab the Image and upload to TwitPic. From there, I grab the URL that is returned by TwitPic (String url = upload.upload(finalFile);).
In step two of this code, in a String instance (String finalStatusWithURL), I grab the content of an EditText and then append the URL from step 1 to it. With this done, the post is finally posted to Twitter.
Configuration conf = new ConfigurationBuilder()
.setOAuthConsumerKey(TWITTER_CONSUMER_KEY)
.setOAuthConsumerSecret(TWITTER_CONSUMER_SECRET)
.setOAuthAccessToken(twit_access_token)
.setOAuthAccessTokenSecret(twit_access_token_secret)
.setMediaProviderAPIKey(TWIT_PIC_API)
.build();
// SET THE FILE PATH
File finalFile = new File(getRealPathFromURI(initialURI));
// THIS IS IMPORTANT. TWITPIC NEEDS THE ACTUAL PATH ON THE DEVICE. JUST THE URI DOES NOT WORK!!!!
ImageUpload upload = new ImageUploadFactory(conf).getInstance(MediaProvider.TWITPIC);
String url = upload.upload(finalFile);
Log.e("TWITTER URL RESPONSE", url);
// NOW, UPLOAD TO TWITTER
ConfigurationBuilder builder = new ConfigurationBuilder();
builder.setOAuthConsumerKey(YOUR_TWITTER_CONSUMER_KEY);
builder.setOAuthConsumerSecret(YOUR_TWITTER_CONSUMER_SECRET);
AccessToken accessToken = new AccessToken(your_twit_access_token, your_twit_access_token_secret);
Twitter twitter = new TwitterFactory(builder.build()).getInstance(accessToken);
String finalStatusWithURL = null;
if (finalStatusMessage.trim().length() > 0) {
finalStatusMessage = editStatusUpdate.getText().toString();
finalStatusWithURL = finalStatusMessage + ":\n " + url;
} else {
finalStatusWithURL = url;
}
twitter4j.Status response = twitter.updateStatus(finalStatusWithURL);
Log.e("TWITTER RESPONSE", response.getText());
This is a method to get the real path of the image you want to upload:
// HELPER METHOD TO GET REAL PATH FOR THE SELECTED IMAGE
public String getRealPathFromURI(Uri uri) {
Cursor cursor = getContentResolver().query(uri, null, null, null, null);
cursor.moveToFirst();
int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
return cursor.getString(idx);
}
Hope this helps. This is production code from an app of mine.
UPDATED:
Change this in the code:
File finalFile = new File(getRealPathFromURI(initialURI));
To this:
Uri tempUri = getImageUri(getApplicationContext(), icon);
File finalFile = new File(getRealPathFromURI(tempUri));
And the helper method for Uri tempUri = getImageUri(getApplicationContext(), bmpFinal);:
public Uri getImageUri(Context inContext, Bitmap inImage) {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
String path = Images.Media.insertImage(inContext.getContentResolver(), inImage, "Title", null);
return Uri.parse(path);
}
You will still need to pass a Bitmap object. To convert your app icon to a Bitmap, use this:
Bitmap icon = BitmapFactory.decodeResource(context.getResources(), R.drawable.ic_launcher);
UPDATED 2:
A little while after you asking and me answering your question, Twitter wrapped up a developer meet in SF. They have introduced a few new Cards which I think may be of use to your specific use-case. It is fresh off the block and I haven't gotten around to testing/using it. But if it fits your purpose, take a look at these links:
http://www.engadget.com/2013/04/02/twitter-cards-apps-products-photo-galleries/ (Where I found out about the new feature)
https://dev.twitter.com/blog/mobile-app-deep-linking-and-new-cards (The official Twitter blog)
https://dev.twitter.com/cards (Developer page for details of the features and how to use them)

How to read text from an image using OCR in android

I want to implement OCR in Android. I.e. getting texts from a business card image. I used code from here.
But when I run this code I got the following error:
java.lang.NoClassDefFoundError:
org.apache.http.entity.mime.content.FileBody
I think it points to the following line:
final FileBody image = new FileBody(new File(filePath));
of the OCRServiceAPI class. How can I fix this?

Can't guess about your above error but I have done this task in Blackberry by using third party application ABBYY product of OCR on PHP server.
During my long R & D I have also worked on the below link of Github_Abbyy.
For using this code you should create a free account here: ocrsdk.com

Not all the Apache packages are available by default in Android, so you will have to download them from the Apache repositories and include those yourself. See the question Android libraries not found and the links provided in the answer there.
Edit: Specifically the sub-packages of org.apache.http.entity are not included, only the entity package itself.
In the example project given by the OCR API they have placed the mime package in a jar in the lib folder.

Checkout that whether you are getting correct path of the image which are selecting from the gallery.
I have also tried this demo and its working fine for me.
Here I'm posting my code:
OCRServiceAPI.java
public class OCRServiceAPI {
public final String m_serviceUrl = "http://api.ocrapiservice.com/1.0/rest/ocr";
private final String m_paramImage = "image";
private final String m_paramLanguage = "language";
private final String m_paramApiKey = "apikey";
private String m_apiKey, m_responseText;
private int m_responseCode;
public OCRServiceAPI(final String p_apiKey) {
this.m_apiKey = p_apiKey;
}
/*
* Convert image to text.
*
* #param language The image text language.
*
* #param filePath The image absolute file path.
*
* #return true if everything went okay and false if there is an error with
* sending and receiving data.
*/
public boolean convertToText(final String p_language,
final String p_filePath) {
try {
sendImage(p_language, p_filePath);
return true;
} catch (ClientProtocolException e) {
e.printStackTrace();
return false;
} catch (IOException e) {
e.printStackTrace();
return false;
}
}
/*
* Send image to OCR service and read response.
*
* #param language The image text language.
*
* #param filePath The image absolute file path.
*/
private void sendImage(final String p_language, final String p_filePath)
throws ClientProtocolException, IOException {
final HttpClient m_httpclient = new DefaultHttpClient();
final HttpPost m_httppost = new HttpPost(m_serviceUrl);
final FileBody m_image = new FileBody(new File(p_filePath));
final MultipartEntity m_reqEntity = new MultipartEntity();
m_reqEntity.addPart(m_paramImage, m_image);
m_reqEntity.addPart(m_paramLanguage, new StringBody(p_language));
m_reqEntity.addPart(m_paramApiKey, new StringBody(getApiKey()));
m_httppost.setEntity(m_reqEntity);
final HttpResponse m_response = m_httpclient.execute(m_httppost);
final HttpEntity m_resEntity = m_response.getEntity();
final StringBuilder m_sb = new StringBuilder();
if (m_resEntity != null) {
final InputStream m_stream = m_resEntity.getContent();
byte m_bytes[] = new byte[4096];
int m_numBytes;
while ((m_numBytes = m_stream.read(m_bytes)) != -1) {
if (m_numBytes != 0) {
m_sb.append(new String(m_bytes, 0, m_numBytes));
}
}
}
setResponseCode(m_response.getStatusLine().getStatusCode());
setResponseText(m_sb.toString());
}
public int getResponseCode() {
return m_responseCode;
}
public void setResponseCode(int p_responseCode) {
this.m_responseCode = p_responseCode;
}
public String getResponseText() {
return m_responseText;
}
public void setResponseText(String p_responseText) {
this.m_responseText = p_responseText;
}
public String getApiKey() {
return m_apiKey;
}
public void setApiKey(String p_apiKey) {
this.m_apiKey = p_apiKey;
} }
SampleActivity.java
public class SampleActivity extends Activity implements OnClickListener {
private final int RESPONSE_OK = 200;
private final int IMAGE_PICKER_REQUEST = 1;
private TextView m_tvPicNameText;
private EditText m_etLangCodeField, m_etApiKeyFiled;
private String m_apiKey; // T7GNRh7VmH
private String m_langCode; // en
private String m_fileName;
#Override
public void onCreate(Bundle p_savedInstanceState) {
super.onCreate(p_savedInstanceState);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.main);
m_tvPicNameText = (TextView) findViewById(R.id.imageName);
m_etLangCodeField = (EditText) findViewById(R.id.lanuageCode);
m_etApiKeyFiled = (EditText) findViewById(R.id.apiKey);
m_etApiKeyFiled.setText("T7GNRh7VmH");
final Button m_btnPickImage = (Button) findViewById(R.id.picImagebutton);
m_btnPickImage.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// Starting image picker activity
startActivityForResult(
new Intent(
Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI),
IMAGE_PICKER_REQUEST);
}
});
final Button m_btnConvertText = (Button) findViewById(R.id.convert);
m_btnConvertText.setOnClickListener(this);
}
public void onClick(View p_v) {
m_apiKey = m_etApiKeyFiled.getText().toString();
m_langCode = m_etLangCodeField.getText().toString();
// Checking are all fields set
if (m_fileName != null && !m_apiKey.equals("")
&& !m_langCode.equals("")) {
final ProgressDialog m_prgDialog = ProgressDialog.show(
SampleActivity.this, "Loading ...", "Converting to text.",
true, false);
final Thread m_thread = new Thread(new Runnable() {
public void run() {
final OCRServiceAPI m_apiClient = new OCRServiceAPI(
m_apiKey);
m_apiClient.convertToText(m_langCode, m_fileName);
// Doing UI related code in UI thread
runOnUiThread(new Runnable() {
public void run() {
m_prgDialog.dismiss();
// Showing response dialog
final AlertDialog.Builder m_alert = new AlertDialog.Builder(
SampleActivity.this);
m_alert.setMessage(m_apiClient.getResponseText());
m_alert.setPositiveButton("OK",
new DialogInterface.OnClickListener() {
public void onClick(
DialogInterface p_dialog,
int p_id) {
}
});
// Setting dialog title related from response code
if (m_apiClient.getResponseCode() == RESPONSE_OK) {
m_alert.setTitle("Success");
} else {
m_alert.setTitle("Faild");
}
m_alert.show();
}
});
}
});
m_thread.start();
} else {
Toast.makeText(SampleActivity.this, "All data are required.",
Toast.LENGTH_SHORT).show();
}
}
#Override
protected void onActivityResult(int p_requestCode, int p_resultCode,
Intent p_data) {
super.onActivityResult(p_requestCode, p_resultCode, p_data);
if (p_requestCode == IMAGE_PICKER_REQUEST && p_resultCode == RESULT_OK) {
m_fileName = getRealPathFromURI(p_data.getData());
m_tvPicNameText.setText("Selected: en"
+ getStringNameFromRealPath(m_fileName));
}
}
/*
* Returns image real path.
*/
private String getRealPathFromURI(final Uri p_contentUri) {
final String[] m_proj = { MediaStore.Images.Media.DATA };
final Cursor m_cursor = managedQuery(p_contentUri, m_proj, null, null,
null);
int m_columnIndex = m_cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
m_cursor.moveToFirst();
return m_cursor.getString(m_columnIndex);
}
/*
* Cuts selected file name from real path to show in screen.
*/
private String getStringNameFromRealPath(final String bucketName) {
return bucketName.lastIndexOf('/') > 0 ? bucketName
.substring(bucketName.lastIndexOf('/') + 1) : bucketName;
} }

How to use google cloud printer to print text file in android

I implemented Google cloud printing in my project but when i attach text file in Google cloud then it show that 1 page to print but not show its content.
So how do I show the content of text file when file attach to google cloud and how to get existing google account from the user phone and how to make setting of google chrome to print from my code so that user easily print the doc from my app.so please provide me the code or some good tutorial to deal with google cloud in my requirement way.
Intent printIntent = new Intent(ExportActivity.this, PrintDialogActivity.class);
printIntent.setDataAndType(Uri.fromFile(file), "text/*");
printIntent.putExtra("title", "Dictionary");
public class PrintDialogActivity extends Activity {
private static final String PRINT_DIALOG_URL = "https://www.google.com/cloudprint/dialog.html";
private static final String JS_INTERFACE = "AndroidPrintDialog";
private static final String CONTENT_TRANSFER_ENCODING = "base64";
private static final String ZXING_URL = "http://zxing.appspot.com";
private static final int ZXING_SCAN_REQUEST = 65743;
/**
* Post message that is sent by Print Dialog web page when the printing dialog needs to be closed.
*/
private static final String CLOSE_POST_MESSAGE_NAME = "cp-dialog-on-close";
/**
* Web view element to show the printing dialog in.
*/
private WebView dialogWebView;
/**
* Intent that started the action.
*/
Intent cloudPrintIntent;
#Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.print_dialog);
dialogWebView = (WebView) findViewById(R.id.webview);
cloudPrintIntent = this.getIntent();
WebSettings settings = dialogWebView.getSettings();
settings.setJavaScriptEnabled(true);
dialogWebView.setWebViewClient(new PrintDialogWebClient());
dialogWebView.addJavascriptInterface(new PrintDialogJavaScriptInterface(), JS_INTERFACE);
dialogWebView.loadUrl(PRINT_DIALOG_URL);
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
if (requestCode == ZXING_SCAN_REQUEST && resultCode == RESULT_OK) {
dialogWebView.loadUrl(intent.getStringExtra("SCAN_RESULT"));
}
}
final class PrintDialogJavaScriptInterface {
public String getType() {
return cloudPrintIntent.getType();
}
public String getTitle() {
return cloudPrintIntent.getExtras().getString("title");
}
public String getContent() {
try {
ContentResolver contentResolver = getContentResolver();
InputStream is = contentResolver.openInputStream(cloudPrintIntent.getData());
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[4096];
int n = is.read(buffer);
while (n >= 0) {
baos.write(buffer, 0, n);
n = is.read(buffer);
}
is.close();
baos.flush();
return Base64.encodeToString(baos.toByteArray(), Base64.DEFAULT);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return "";
}
public String getEncoding() {
return CONTENT_TRANSFER_ENCODING;
}
public void onPostMessage(String message) {
if (message.startsWith(CLOSE_POST_MESSAGE_NAME)) {
finish();
}
}
}
private final class PrintDialogWebClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url.startsWith(ZXING_URL)) {
Intent intentScan = new Intent("com.google.zxing.client.android.SCAN");
intentScan.putExtra("SCAN_MODE", "QR_CODE_MODE");
try {
startActivityForResult(intentScan, ZXING_SCAN_REQUEST);
} catch (ActivityNotFoundException error) {
view.loadUrl(url);
}
} else {
view.loadUrl(url);
}
return false;
}
#Override
public void onPageFinished(WebView view, String url) {
if (PRINT_DIALOG_URL.equals(url)) {
// Submit print document.
view.loadUrl("javascript:printDialog.setPrintDocument(printDialog.createPrintDocument(" + "window." + JS_INTERFACE + ".getType(),window." + JS_INTERFACE + ".getTitle()," + "window." + JS_INTERFACE + ".getContent(),window." + JS_INTERFACE + ".getEncoding()))");
// Add post messages listener.
view.loadUrl("javascript:window.addEventListener('message'," + "function(evt){window." + JS_INTERFACE + ".onPostMessage(evt.data)}, false)");
}
}
}
}