Open top menu

  • 14:00
  • 1

Read PDF file via assets folder in Android Studio
In this tutorial explain how to read pdf file assets folder.
I have used PDF Read Library .

Step 1. Create Android Project.

Step 2. Add Permission in Manifest file.

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>



Step 3.Add dependencies .






compile 'com.github.barteksc:android-pdf-viewer:2.7.0-beta.1'







Step 4. Create activity_main.xml.






 



xml version="1.0" encoding="utf-8"?>

<LinearLayout
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"
    android:orientation="vertical">

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Android Begginer Point"
        android:textAllCaps="true"
        android:textStyle="bold"
        android:textColor="#FF439934"

        />

    <com.github.barteksc.pdfviewer.PDFView

        android:id="@+id/pdfView"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>







Step 5. Create MainActivity.java.














import android.content.Context;
import android.content.Intent;
import android.content.res.AssetManager;
import android.graphics.Bitmap;
import android.graphics.pdf.PdfRenderer;
import android.net.Uri;
import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.TextView;
import android.widget.Toast;

import com.github.barteksc.pdfviewer.PDFView;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

public class MainActivity extends AppCompatActivity {

    private static final String FILENAME = "sit.pdf";
    PDFView ReadTxt;
   
    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ReadTxt=(PDFView)findViewById(R.id.pdfView);
        File file = new File(this.getCacheDir(), FILENAME);


        if (!file.exists()) {
            try {
                InputStream asset = this.getAssets().open(FILENAME);
                ReadTxt.fromStream(asset)
                        .pages(0, 2, 1, 3, 3, 3)
                        .enableSwipe(true)
                        .swipeHorizontal(false)
                        .enableDoubletap(true)
                        .defaultPage(0)
                        .enableAnnotationRendering(false)
                        .password(null)
                        .scrollHandle(null)
                        .enableAntialiasing(true)
                        .spacing(0)
                        .load();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }else {
           Toast.makeText(getApplicationContext(),


"File not found",Toast.LENGTH_LONG).show();
        }
    }

    @Override    protected void onStart() {
        super.onStart();
    }

}



try this.........










































Read more


















































            

          

          

        

          

        










    

  • 11:26
    • 

  • 
1

    • 


















In this tutorial explain how to Create / Delete Multiple text
file Inside Root Folder  and every text
file Size is 5Mb . 






private File createEVENTFileWriter() {

    File filelog = null;

    try {

        String root = Environment.getExternalStorageDirectory().toString();
        File myDir = new File(root + "/" + log_foldereventname);
        myDir.mkdirs();
        String h = DateFormat.format("MM-dd-yyyyy ss",System.currentTimeMillis()).toString();
        filelog = new File(myDir, log_filenameevent);
        filelog.createNewFile();
        long fileSizeInBytes = filelog.length();
        long fileSizeInKB = fileSizeInBytes / 1024;

        if (fileSizeInKB > 5000) {

            File from = new File(myDir, log_filenameevent);
            File to = new File(myDir, h + log_filenameevent);
            if (from.exists()) {
                from.renameTo(to);

            }
        }

    } catch (Exception err) {
        fileWriteCreationFailed = true;
        err.printStackTrace();
    }
    return filelog;

}


 





public
void DeletOlderFolder() {

    String root = Environment.getExternalStorageDirectory().toString();

    File myDir = new File(root + "/" + log_foldereventname);

    myDir.mkdirs();

    File list[] = myDir.listFiles();

    for (int i = 0; i < list.length; i++) {

        long diff = new Date().getTime() -
list[i].getAbsoluteFile().lastModified();

        if (diff >  3 * 24
* 60 * 60 * 1000) {//3 * 24 * 60 * 60 * 1000(3days)

            list[i].getAbsoluteFile().delete();

        }

    }








Read more


















































            

          

          

        

          

        






















Explain- The Log file delete alternate in  3 days.




import android.content.Context;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Date;




public class LogFile {

    Context context;

     public LogFile ( ) {

        DeletOlderFolder();
    }



    public void DeletOlderFolder(){

        File file=new File("sdcard/LoungeLogFile.txt");

        if(file != null) {

            long diff = new Date().getTime() - file.lastModified();

            if (diff > 3 * 24 * 60 * 60 * 1000) {

                file.delete();

            }

        }

    }

}


 


 






public class MainActivity extends Activity  {


 


@Override

protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);


 


 


new LogFile (); // Delete Log file in 3 days


 


 


}


}














Read more























































Explain-  write Log file programmatically in android.







 

import android.content.Context;



import java.io.BufferedWriter;

import java.io.File;

import java.io.FileWriter;

import java.io.IOException;

import java.util.Date;





public class LogClass {

    Context context;



    public LogClass(Context
context, String text) {

       this.context=context;

        LogFile(text);

        DeletOlderFolder();

    }



    public  void LogFile( String text){



            File logFile = new File("sdcard/LoungeLogFile.txt");

            if
(!logFile.exists()) {

                try {

                   
logFile.createNewFile();

                }catch (IOException e){

                    e.printStackTrace();

                }

            }

            try
{

                BufferedWriter buf = new BufferedWriter(





                                    new FileWriter(logFile, true));

                buf.append(text);

                buf.newLine();

                buf.close();

            } catch (IOException
e) {

                e.printStackTrace();

            }



    }

 }








Read more








































            

          

          

        

          

        
























How to solve SSL.SSLHandshakeException in Android?







Basically ,SSL usage Scenario, a server configurd  with a certificate containing a public key as
well as a Matching private key.As part of handshake between an SLL client and
server.







TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() {

      public java.security.cert.X509Certificate[]
getAcceptedIssuers() {

          return null;

      }

      public void checkClientTrusted(X509Certificate[]
certs, String authType) {

      }

      public void checkServerTrusted(X509Certificate[]
certs, String authType) {

      }

  } };

  final SSLContext sc = SSLContext.getInstance("SSL");

  sc.init(null, trustAllCerts, new java.security.SecureRandom());

  HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());

  // Create all-trusting host name verifier

  HostnameVerifier allHostsValid = new HostnameVerifier() {

      public boolean verify(String hostname, SSLSession
session) {

          return true;

      }

  };

  // Install the all-trusting host verifier

  HttpsURLConnection.setDefaultHostnameVerifier(allHostsValid);

  URL url = new URL(aurl[0]);

//  HttpsURLConnection connection =
(HttpsURLConnection) (url.openConnection());

  URLConnection connection = url.openConnection();

  connection.setRequestProperty("connection", "close");

  connection.connect();



  









Try this, 








Read more








































        

      










Subscribe to:
Posts (Atom)