Creating sha1 Key in windows-7 for Android Google Play Services .... Simple Steps :-D

METHOD 1

1. Find out .Android folder-path in System.
2. Execute this path on Command prompt following the code written below.

keytool -list -v -alias androiddebugkey -keystore debug.keystore -storepass android -keypass android

METHOD 2

How to connect google cloud printer to print files from your Android tablet ? Simple steps :-)

The steps below describe how to set up your local printer for use with Google Cloud Print:-

• 1.       Launch Google Chrome on your computer.
• 2.       Click the Menu button (represented by an icon showing 3 horizontal bars) at the upper-          right corner of the window.
• 3.       Select Settings.
• 4.       Click Show advanced settings.
• 5.       Scroll down to the Google Cloud Print section and click Add printers.
• 6.       Log in to your Google Account to enter Google Cloud Print
• 7.       A confirmation message appears on the next screen. This will register the printer that is        connected to the computer. Click Add Printer(s) to confirm.
• 8.       Your printer is now registered with Google Cloud Print

Application Requirements:-

1. Android.permission

1.       INTERNET

2.       READ_EXTERNAL_STORAGE
3.       READ_INTERNAL_STORAGE
4.       ACCESS_NETWORK_STATE
5.       WRITE_EXTERNAL_STORAGE

2. Act_main.java (Main launch-Activity)

3. PrintDialogActivity.java (Activity for Google print setup)

4. Act_main.Xml (First User View)

5. Print_dialog.xml (Google print purpose)

6. Row.xml (List view item)

******************************************************************************

manifest file

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

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.manish.googleprintdemo"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="10"

        android:targetSdkVersion="19" />

    

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

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

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

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

    <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.manish.googleprintdemo.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>

         <activity android:name=".PrintDialogActivity" />

    </application>

</manifest>

*****************************************************************************

act_main.xml

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

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical" >

    <Button

        android:id="@+id/btn_select"

        android:layout_width="fill_parent"

        android:layout_height="50dp"

        android:text="Select File" />

    <ListView

        android:id="@android:id/list"

        android:layout_width="fill_parent"

        android:layout_height="277dp" />

    <LinearLayout

        android:layout_width="fill_parent"

        android:layout_height="50dp"

        android:orientation="horizontal"

        android:weightSum="3" >

        <TextView

            android:id="@+id/Sel_item"

            android:layout_width="0dp"

            android:layout_height="match_parent"

            android:layout_weight="2"

            android:gravity="center"

            android:text="Selected File :" />

        <Button

            android:id="@+id/btn_print"

            android:layout_width="0dp"

            android:layout_height="match_parent"

            android:layout_weight="1"

            android:text="Print" />

    </LinearLayout>

</LinearLayout>

********************************************************************************

Print_dialog.xml 

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

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent" >

    <WebView

        android:id="@+id/webview"

        android:layout_width="fill_parent"

        android:layout_height="fill_parent" />

</RelativeLayout>

*********************************************************************************

Row.xml

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

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent" >

    <WebView

        android:id="@+id/webview"

        android:layout_width="fill_parent"

        android:layout_height="fill_parent" />

</RelativeLayout>

*********************************************************************************

Act_main.java

package com.example.filesgoogleprint;

import java.io.File;

import java.util.ArrayList;

import java.util.List;

import android.app.AlertDialog;

import android.app.ListActivity;

import android.content.Context;

import android.content.DialogInterface;

import android.content.Intent;

import android.net.ConnectivityManager;

import android.net.NetworkInfo;

import android.net.Uri;

import android.os.Bundle;

import android.os.Environment;

import android.util.Log;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.ListView;

import android.widget.TextView;

import android.widget.Toast;

public class act_main extends ListActivity {

Button btn_select,btn_print;

ListView list;

TextView Sel_item;

private List<String> item = null;

private List<String> path = null;

private String root="/";

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.act_main);

init();

btn_select.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

getDir(root);

}

});

btn_print.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

if (isNetworkAvailable() == false) {

                 Toast.makeText(act_main.this,

                               "Network connection not available, Please try later",

                               Toast.LENGTH_SHORT).show();

          } else {

                 File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath() +                                      Sel_item.getText().toString());

                 Intent printIntent = new Intent(act_main.this, PrintDialogActivity.class);

                 printIntent.setDataAndType(Uri.fromFile(file), "application/pdf");

                 printIntent.putExtra("title", "Android print demo");

                 startActivity(printIntent);

          }

}

});

}

private void init() {

// TODO Auto-generated method stub

btn_select=(Button)findViewById(R.id.btn_select);

Sel_item=(TextView)findViewById(R.id.Sel_item);

btn_print=(Button)findViewById(R.id.btn_print);

}

private void getDir(String dirPath)

{

Sel_item.setText("Location: " + dirPath);

item = new ArrayList<String>();

path = new ArrayList<String>();

File f = new File(dirPath);

File[] files = f.listFiles();

if(!dirPath.equals(root))

{

item.add(root);

path.add(root);

item.add("../");

path.add(f.getParent());

}

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

{

File file = files[i];

path.add(file.getPath());

if(file.isDirectory())

item.add(file.getName() + "/");

else

item.add(file.getName());

}

ArrayAdapter<String> fileList = new ArrayAdapter<String>(this, R.layout.row, item);

setListAdapter(fileList);

}

protected void onListItemClick(ListView l, View v, int position, long id) {

File file = new File(path.get(position));

if (file.isDirectory())

{

if(file.canRead())

getDir(path.get(position));

else

{

new AlertDialog.Builder(this)

.setIcon(R.drawable.ic_launcher)

.setTitle("[" + file.getName() + "] folder can't be read!")

.setPositiveButton("OK", 

new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

// TODO Auto-generated method stub

}

}).show();

}

}

else

{

Sel_item.setText(/*path.get(position)+"" +*/ "/"+file.getName());

Sel_item.setTextSize(20);

Log.v("/xyz.pdf", file.getName());

new AlertDialog.Builder(this)

.setIcon(R.drawable.ic_launcher)

.setTitle("["+path.get(position)+"" + file.getName() + "]")

.setPositiveButton("OK", 

new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

// TODO Auto-generated method stub

}

}).show();

}

}

    public boolean isNetworkAvailable() {

        ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);

        NetworkInfo networkInfo = cm.getActiveNetworkInfo();

        // if no network is available networkInfo will be null

        // otherwise check if we are connected

        if (networkInfo != null && networkInfo.isConnected()) {

               Log.e("Network Testing", "***Available***");

               return true;

        }

        Log.e("Network Testing", "***Not Available***");

        return false;

 }

}

********************************************************************************

PrintDialogActivity.java

package com.manish.googleprintdemo;

import android.annotation.SuppressLint;

import android.app.Activity;

import android.content.ActivityNotFoundException;

import android.content.ContentResolver;

import android.content.Intent;

import android.os.Bundle;

import android.util.Base64;

import android.webkit.WebSettings;

import android.webkit.WebView;

import android.webkit.WebViewClient;

import java.io.ByteArrayOutputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.InputStream;

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;

  @SuppressLint("JavascriptInterface") @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)");

      }

    }

  }

}

********************************************************************************