In here i'm try to generate a pdf file in android, but in the run time i get this execption
ioException:java.io.FileNotFoundException: /storage/sdcard/PDF/Demo.pdf: openfailed: ENOENT (No such file or directory)
this is my code
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Font;
import com.lowagie.text.HeaderFooter;
import com.lowagie.text.Image;
import com.lowagie.text.Paragraph;
import com.lowagie.text.Phrase;
import com.lowagie.text.pdf.PdfWriter;
public class MainActivity extends Activity {
private Button createPDF , openPDF;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
createPDF = (Button)findViewById(R.id.button1);
createPDF.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
createPDF();
}
});
openPDF = (Button)findViewById(R.id.button2);
openPDF.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
openPdf();
}
});
}
#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;
}
public void createPDF(){
Document doc =new Document();
try {
String parth = Environment.getExternalStorageDirectory().getAbsolutePath() + "/PDF";
File dir = new File(parth);
if(!dir.exists())
dir.mkdir();
Log.d("PDFCreater", "PDF PARTH "+parth);
File file = new File(dir,"demo.pdf");
Log.d("PDFCreater", "Create");
FileOutputStream fOut = new FileOutputStream(file);
Log.d("PDFCreater", "1");
PdfWriter.getInstance(doc, fOut);
Log.d("PDFCreater", "2");
doc.open();
Log.d("PDFCreater", "open");
Paragraph p1= new Paragraph("Customer History");
Font paraFont = new Font(Font.HELVETICA);
paraFont.setSize(16);
p1.setAlignment(Paragraph.ALIGN_CENTER);
p1.setFont(paraFont);
doc.add(p1);
Log.d("PDFCreater", "add");
/* Inserting Image in PDF */
ByteArrayOutputStream stream = new ByteArrayOutputStream();
Bitmap bitmap = BitmapFactory.decodeResource(getBaseContext().getResources(), R.drawable.apple);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100 , stream);
Image myImg = Image.getInstance(stream.toByteArray());
myImg.setAlignment(Image.MIDDLE);
//add image to document
doc.add(myImg);
Phrase footerText = new Phrase("This is an example of a footer");
HeaderFooter pdfFooter = new HeaderFooter(footerText, false);
doc.setFooter(pdfFooter);
Toast.makeText(getApplicationContext(), "Created...", Toast.LENGTH_LONG).show();
} catch (DocumentException de) {
Log.e("PDFCreator", "DocumentException:" + de);
} catch (IOException e) {
Log.e("PDFCreator", "ioException:" + e);
}
finally
{
doc.close();
}
}
void openPdf()
{
Intent intent = new Intent(Intent.ACTION_VIEW);
String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/PDF";
File file = new File(path, "demo.pdf");
intent.setDataAndType( Uri.fromFile( file ), "application/pdf" );
startActivity(intent);
}
}
here is my xml file
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/hello_world" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/textView1"
android:layout_below="#+id/textView1"
android:layout_marginLeft="56dp"
android:layout_marginTop="50dp"
android:text="Create" />
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/button1"
android:layout_below="#+id/button1"
android:layout_marginTop="38dp"
android:text="Open" />
</RelativeLayout>
Manifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.isuru.mypdf"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.isuru.mypdf.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
I think that the exception throws on this line
FileOutputStream fOut = new FileOutputStream(file);
please help me , thank you !
Have you declared this permission in the android manifest file:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
Add read and write permission in manifest file:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
Check here:
Getting file from sdcard with Uri
Related
This question already has answers here:
Unfortunately MyApp has stopped. How can I solve this?
(23 answers)
Closed 4 years ago.
XML
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.adufordjour.external">
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
android:maxSdkVersion="18"/>
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.adufordjour.external.MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="16dp"
android:layout_marginTop="61dp"
android:text="NAME"
android:id="#+id/textView"
/>
<EditText
android:id="#+id/editText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_marginStart="32dp"
android:layout_marginTop="44dp"
android:layout_toEndOf="#+id/textView"
android:ems="10"
android:inputType="textPersonName"
android:text="Name" />
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignStart="#+id/editText"
android:layout_centerVertical="true"
android:text="Save"
android:onClick="sAVE"/>
</RelativeLayout>
Android code
This is the code for storing data on a public external device:
package com.example.adufordjour.external;
import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
public class MainActivity extends AppCompatActivity {
EditText editText1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editText1 = findViewById(R.id.editText);
}
This is the method for saving to the public external device
public void sAVE(View view){
String st1 = editText1.getText().toString();
File file = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS), "myFile");
FileOutputStream fileOutputStream=null;
try {
if (isExternalStorageWritable()==true){
fileOutputStream =new FileOutputStream(file);
fileOutputStream.write(st1.getBytes());}
else {
Toast.makeText(this, "not saved", Toast.LENGTH_SHORT).show();
}
}
catch (FileNotFoundException e) {
e.printStackTrace();
}
catch (IOException e) {
e.printStackTrace();
}
finally {
try {
fileOutputStream.close();
}
catch (IOException e) {
e.printStackTrace();
}
}
Toast.makeText(this, "file save at" + " " + "myFile", Toast.LENGTH_SHORT).show();
}
public boolean isExternalStorageWritable(){
String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(state)) {
return true;
}
else {
return false;
}
}
}
Why do you use android:maxSdkVersion="18" in uses-permission? I think it's not needed there.
Try to add READ_EXTERNAL_STORAGE permission and check if it worked. If not, paste stack trace of your crash.
I want to write data into a SD card but I am getting the following error: Failed open failed: EACCES (Permission denied).
The Android version I am working on is jelly bean(4.3).
I have also given permission in manifest file.
Here is my code:
package com.example.androidsdcard;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class MainActivity extends Activity {
// GUI controls
EditText txtData;
Button btnWriteSDFile;
Button btnReadSDFile;
Button btnClearScreen;
Button btnClose;
File sample=null;
String SDCard_Path="/mnt/extsd";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// bind GUI elements with local controls
txtData = (EditText) findViewById(R.id.txtData);
txtData.setHint("Enter some lines of data here...");
btnWriteSDFile = (Button) findViewById(R.id.btnWriteSDFile);
btnWriteSDFile.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// write on SD card file data in the text box
File storageDir = new File(SDCard_Path);
String sample1 = Environment.getExternalStorageDirectory().getPath();
Toast.makeText(MainActivity.this,sample1, Toast.LENGTH_LONG).show();
if(sample == null)
{
Toast.makeText(MainActivity.this,"Sample == null executed", Toast.LENGTH_LONG).show();
}
else
Toast.makeText(MainActivity.this,"Sample == null skipped", Toast.LENGTH_LONG).show();
if(storageDir.isDirectory())
{
String[] dirList = storageDir.list();
if(dirList==null)
{
Toast.makeText(getBaseContext(),"Failed to detect SD card",Toast.LENGTH_SHORT).show();
return;
}
else
Toast.makeText(getBaseContext(),"SD Card Detected",Toast.LENGTH_SHORT).show();
}
try {
File myFile = new File("/mnt/extsd/MedeQuip.txt");
/* if(myFile.createNewFile()==false)
{
Toast.makeText(getBaseContext(),"Unable to create File'",Toast.LENGTH_SHORT).show();
return;
}
else
Toast.makeText(getBaseContext(),"File Created'",Toast.LENGTH_SHORT).show();
*/ FileOutputStream fOut = new FileOutputStream(myFile);
OutputStreamWriter myOutWriter = new OutputStreamWriter(fOut);
myOutWriter.append(txtData.getText());
myOutWriter.close();
fOut.close();
Toast.makeText(getBaseContext(),"Done writing SD mysdfile.txt'",Toast.LENGTH_SHORT).show();
} catch (Exception e)
{
Toast.makeText(getBaseContext(), e.getMessage(),Toast.LENGTH_SHORT).show();
}
}// onClick
}); // btnWriteSDFile
btnReadSDFile = (Button) findViewById(R.id.btnReadSDFile);
btnReadSDFile.setOnClickListener(new OnClickListener()
{
public void onClick(View v)
{
// write on SD card file data in the text box
try
{
File myFile = new File(SDCard_Path+"/MedeQuip.txt");
FileInputStream fIn = new FileInputStream(myFile);
BufferedReader myReader = new BufferedReader(
new InputStreamReader(fIn));
String aDataRow = "";
String aBuffer = "";
while ((aDataRow = myReader.readLine()) != null) {
aBuffer += aDataRow + "\n";
}
txtData.setText(aBuffer);
myReader.close();
Toast.makeText(getBaseContext(),"Done reading SD 'MedeQuip.txt'",Toast.LENGTH_SHORT).show();
}
catch (Exception e)
{
Toast.makeText(getBaseContext(), e.getMessage(),Toast.LENGTH_SHORT).show();
}
}// onClick
}); // btnReadSDFile
btnClearScreen = (Button) findViewById(R.id.btnClearScreen);
btnClearScreen.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// clear text box
txtData.setText("");
}
}); // btnClearScreen
btnClose = (Button) findViewById(R.id.btnClose);
btnClose.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// clear text box
finish();
}
}); // btnClose
}// onCreate
}// AndSDcard
Here is my xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:id="#+id/txtData"
android:layout_width="fill_parent"
android:layout_height="180px"
android:textSize="18sp" />
<Button
android:id="#+id/btnWriteSDFile"
android:layout_width="143px"
android:layout_height="44px"
android:layout_alignParentLeft="true"
android:layout_below="#+id/txtData"
android:layout_marginTop="60dp"
android:text="1. Write SD File" />
<Button
android:id="#+id/btnClearScreen"
android:layout_width="141px"
android:layout_height="42px"
android:layout_alignBaseline="#+id/btnWriteSDFile"
android:layout_alignBottom="#+id/btnWriteSDFile"
android:layout_marginLeft="30dp"
android:layout_toRightOf="#+id/btnWriteSDFile"
android:text="2. Clear Screen" />
<Button
android:id="#+id/btnReadSDFile"
android:layout_width="140px"
android:layout_height="42px"
android:layout_alignTop="#+id/btnWriteSDFile"
android:layout_marginLeft="32dp"
android:layout_toRightOf="#+id/btnClearScreen"
android:text="3. Read SD File" />
<Button
android:id="#+id/btnClose"
android:layout_width="141px"
android:layout_height="43px"
android:layout_alignTop="#+id/btnClearScreen"
android:layout_marginLeft="61dp"
android:layout_toRightOf="#+id/btnReadSDFile"
android:text="4. Close" />
</RelativeLayout>
Here is my manifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.androidsdcard"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
</manifest>
You cannot assume external storage will always be at "/mnt/extsd". Very rarely will this be the case as it is up to the OEM where the mount points are. Use the standard APIs from the Context object to get the correct locations of interest: Context.getExternalFilesDir() and Context.getExternalFilesDirs().
the problem is with jelly bean
this work for me
String path = null;
if (android.os.Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT){
path = getActivity().getCacheDir() + File.separator + "name";
} else{
path = Environment.getExternalStorageDirectory() + File.separator + "name";
}
I have a problem while writing code of bluetooth adapter in android. Bluetooth adapter is always remains null. I have written code for that but I could not turn on the bluetooth.
My Code is as below
package com.example.bluetoothdemo;
import java.io.IOException;
import java.io.OutputStream;
import java.util.UUID;
import android.os.Bundle;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
#SuppressLint("NewApi")
public class MainActivity extends Activity {
String msg="Hello";/* Default message to be sent. */
BluetoothAdapter adpt=null;// Default it is set to null value.
public static String MacAddress;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button btn=(Button)findViewById(R.id.button_send);
final TextView tv=(TextView)findViewById(R.id.disp_msg);
btn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
adpt=BluetoothAdapter.getDefaultAdapter();
if(adpt==null){
// Always this portion is generating errors.
tv.append("Bluetooth Not Available in device");
Toast.makeText(getApplicationContext(), "Bluetooth is off",Toast.LENGTH_LONG).show();
}
else{
if(!adpt.isEnabled()){
//adpt.enable();
Intent i=new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
//startActivity(i);
startActivityForResult(i, 0);
tv.append("Bluetooth is turned on.");
}
}
byte[] toSend=msg.getBytes();
try{
final UUID applicationUUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
BluetoothDevice device=adpt.getRemoteDevice(MacAddress);
BluetoothSocket socket=device.createInsecureRfcommSocketToServiceRecord(applicationUUID);
socket.connect();
OutputStream mmout=socket.getOutputStream();
mmout.write(toSend);
mmout.flush();
mmout.close();
socket.close();
Toast.makeText(getBaseContext(), MacAddress, Toast.LENGTH_SHORT).show();
}catch(IOException e){
e.printStackTrace();
}
}
});
}
#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;
}
}
My activity_main.xml file is as below:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal">
<EditText android:id="#+id/edit_message"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:hint="#string/edit_message" />
<Button android:id="#+id/button_send"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/button_send"
android:onClick="sendMessage" />
<TextView android:id="#+id/disp_msg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/display"
/>
</LinearLayout>
My AndroidMenifest.xml file is as below:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.bluetoothdemo"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8" android:targetSdkVersion="18" />
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.bluetoothdemo.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>-
I have created the .apk file also and run on my Micromax A89 Ninja phone but the error says that "BluetoothDemo has been stopped unexpectedly."
Please write the below line
adpt=BluetoothAdapter.getDefaultAdapter();
in OnCreate() method after this line,
setContentView(R.layout.activity_main);
I'm using tesseract-android-tools (pre-built lib) for ANPR. But having problem when the image background is worse. Can anybody suggest how can I focus/get rectangular area of/from image taken from camera. Despite of searching the forum I'm unable to get a working example on this.
Here is my code:~
1) AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.ocrtest"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<uses-feature android:name="android.hardware.camera" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.ocrtest.OcrActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
2) main.xml (layout)
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="10dp" >
<ImageView
android:id="#+id/image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:contentDescription="Output"
android:src="#drawable/ic_launcher" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center"
>
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Take Pic" />
</LinearLayout>
<TextView
android:id="#+id/field"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="N/A" />
</LinearLayout>
</ScrollView>
3) OcrActivity.java
import java.io.File;
import java.io.IOException;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.media.ExifInterface;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.googlecode.tesseract.android.TessBaseAPI;
public class OcrActivity extends Activity implements View.OnClickListener {
protected Button _button;
protected ImageView _image;
protected TextView _field;
protected String _path;
protected boolean _taken;
protected static final String PHOTO_TAKEN = "photo_taken";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
_image = (ImageView) findViewById(R.id.image);
_field = (TextView) findViewById(R.id.field);
_button = (Button) findViewById(R.id.button);
_button.setOnClickListener(this);
File f = new File(Environment.getExternalStorageDirectory()
+ "/tessaract_languages");
if (f.isDirectory()) {
File imgDirectory = new File(
Environment.getExternalStorageDirectory() + "/images/");
imgDirectory.mkdirs();
} else {
Toast.makeText(getApplicationContext(),
"OCR library files missing.", Toast.LENGTH_LONG).show();
finish();
}
_path = Environment.getExternalStorageDirectory()
+ "/images/make_machine_example.jpg";
}
#Override
public void onClick(View v) {
switch(v.getId()) {
case R.id.button:
Log.i("MakeMachine", "ButtonClickHandler.onClick()");
startCameraActivity();
break;
}
}
protected void startCameraActivity() {
Log.i("MakeMachine", "startCameraActivity()");
File file = new File(_path);
Uri outputFileUri = Uri.fromFile(file);
Intent intent = new Intent(
android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
startActivityForResult(intent, 0);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
Log.i("MakeMachine", "resultCode: " + resultCode);
switch (resultCode) {
case 0:
Log.i("MakeMachine", "User cancelled");
break;
case -1:
try {
onPhotoTaken();
} catch (IOException e) {
e.printStackTrace();
}
break;
}
}
protected void onPhotoTaken() throws IOException {
_taken = true;
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 4;
Bitmap bitmap = BitmapFactory.decodeFile(_path, options);
_image.setImageBitmap(bitmap);
// _field.setVisibility(View.GONE);
ExifInterface exif = new ExifInterface(_path);
int exifOrientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION,ExifInterface.ORIENTATION_NORMAL);
int rotate = 0;
switch (exifOrientation) {
case ExifInterface.ORIENTATION_ROTATE_90:
rotate = 90;
break;
case ExifInterface.ORIENTATION_ROTATE_180:
rotate = 180;
break;
case ExifInterface.ORIENTATION_ROTATE_270:
rotate = 270;
break;
}
if (rotate != 0) {
int w = bitmap.getWidth();
int h = bitmap.getHeight();
Matrix mtx = new Matrix();
mtx.preRotate(rotate);
bitmap = Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, false);
bitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true);
} else {
bitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true);
}
TessBaseAPI baseApi = new TessBaseAPI();
baseApi.init(Environment.getExternalStorageDirectory()+ "/tessaract_languages/", "eng");
baseApi.setImage(bitmap);
String recognizedText = baseApi.getUTF8Text();
System.out.println(recognizedText);
_field.setText(recognizedText);
baseApi.end();
}
#Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
Log.i("MakeMachine", "onRestoreInstanceState()");
if (savedInstanceState.getBoolean(OcrActivity.PHOTO_TAKEN)) {
try {
onPhotoTaken();
} catch (IOException e) {
e.printStackTrace();
}
}
}
#Override
protected void onSaveInstanceState(Bundle outState) {
outState.putBoolean(OcrActivity.PHOTO_TAKEN, _taken);
}
}
I made a project which must generate a page on entering message, but it is not working for a reason. I am posting the code below.
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="#string/hello_world" />
<EditText
android:id="#+id/edit1"
android:layout_margin="20dp"
android:layout_marginTop="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:hint="Write a message"
>
<requestFocus />
</EditText>
<Button
android:id="#+id/button1"
android:layout_gravity="center_horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Enter"
android:onClick="send"
/>
</LinearLayout>
MainActivity.java
package com.example.postapp;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class MainActivity extends Activity {
EditText edit1;
Button button1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
edit1 = (EditText) findViewById(R.id.edit1);
button1 = (Button) findViewById(R.id.button1);
}
#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;
}
public void send(View v)
{
String msg = edit1.getText().toString();
if(msg.length()>0)
{ //Toast.makeText(getBaseContext(), "enter length", Toast.LENGTH_SHORT).show();
HttpClient httpc = new DefaultHttpClient();
HttpPost httpost = new HttpPost("http://localhost/demo/server_scripr.php");
//Toast.makeText(getBaseContext(), "enter length0", Toast.LENGTH_SHORT).show();
try
{
List<BasicNameValuePair> vp = new ArrayList<BasicNameValuePair>();
//vp.add(new BasicNameValuePair("id","01"));
vp.add(new BasicNameValuePair("message",msg));
httpost.setEntity(new UrlEncodedFormEntity(vp));
httpc.execute(httpost);
edit1.setText("");
Toast.makeText(getBaseContext(), "Sent", Toast.LENGTH_SHORT).show();
}
catch(Exception e)
{
e.printStackTrace();
}
}
else
{
Toast.makeText(getBaseContext(), "Please enter the field", Toast.LENGTH_SHORT).show();
}
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.postapp"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.postapp.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Thanks, help me in finding the solution
The error is most likely within this line of your code:
HttpPost httpost = new HttpPost("http://localhost/demo/server_scripr.php");
Make sure it isn't supposed to be:
/server_script.php