Creating Shared Preferences in android.....

Creating Shared Preferences in android.....

   December 17, 2014       Unknown

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This article shows how to create SharedPreferences in android.

import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;

public class MyPreferences {
    public static boolean putInt(Context activity,String key,int value){
        SharedPreferences sharedPreferences = activity.getSharedPreferences("pref", Activity.MODE_PRIVATE);
        SharedPreferences.Editor editor = sharedPreferences.edit();
        editor.putInt(key, value);
        editor.commit();                      
        return true;      
    }
 
    public static int getInt(Context activity,String key,int defaultValue){
        SharedPreferences sharedPreferences = activity.getSharedPreferences("pref", Activity.MODE_PRIVATE);
        int temp = sharedPreferences.getInt(key, defaultValue);
        return temp;      
    }
 
    public static boolean putString(Context activity, String key, String value)
    {
    SharedPreferences sharedPreferences = activity.getSharedPreferences("pref", Activity.MODE_PRIVATE);
        SharedPreferences.Editor editor = sharedPreferences.edit();
        editor.putString(key, value);
        editor.commit();                      
        return true;         }
 
    public static String getString(Context activity,String key,String defaultValue){
        SharedPreferences sharedPreferences = activity.getSharedPreferences("pref", Activity.MODE_PRIVATE);
        String temp = sharedPreferences.getString(key, defaultValue);
        return temp;      
    }
 
    public static boolean putLong(Context activity, String key, long value)
    {
    SharedPreferences sharedPreferences = activity.getSharedPreferences("pref", Activity.MODE_PRIVATE);
        SharedPreferences.Editor editor = sharedPreferences.edit();
        editor.putLong(key, value);
        editor.commit();
return true;         }
 
    public static long getLong(Context activity,String key,long defaultValue){
        SharedPreferences sharedPreferences = activity.getSharedPreferences("pref", Activity.MODE_PRIVATE);
        long temp = sharedPreferences.getLong(key, defaultValue);
        return temp;      
    }
 
}

By implementing above code you can easily Create SharedPreferences.

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Creating notification in android.....

Creating notification in android.....

   December 04, 2014       Unknown

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This article shows how to create notification in android.

public MyNotification(Context ctx){

super();

this.ctx=ctx;

String ns = Context.NOTIFICATION_SERVICE;

NotificationManager mNotificationManager = (NotificationManager) ctx.getSystemService(ns);

long when = System.currentTimeMillis();

Notification.Builder builder = new Notification.Builder(ctx);

notification=builder.getNotification();

notification.when=when;

notification.icon=R.drawable.mp3_icon;

remoteViews=new RemoteViews(ctx.getPackageName(),                        R.layout.service_layout);

notification.contentView = remoteViews;

notification.flags |= Notification.FLAG_AUTO_CANCEL;

mNotificationManager.notify(5, notification);

}

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Creating Custom views in a PreferenceActivity in android...

Creating Custom views in a PreferenceActivity in android...

   December 03, 2014       Unknown

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This article shows how to add custom view in PreferenceActivity in android.

Create main.xml, the only necessary view is a ListView, with id: android:id="@android:id/list".

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

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

        android:orientation="vertical" android:layout_width="fill_parent"

        android:layout_height="fill_parent" android:weightSum="1">

        <ListView 

            android:id="@android:id/list" 

            android:layout_weight="1"

            android:layout_width="fill_parent"

                android:layout_height="0dp">

        </ListView>

        <TextView

        android:id="@+id/textView"

        android:layout_width="match_parent"

        android:layout_height="wrap_content" />

</LinearLayout>

Create CustomPreferenceActivity.java

public class CustomPreferenceActivity extends PreferenceActivity {

        @Override

        protected void onCreate(Bundle savedInstanceState) {

                super.onCreate(savedInstanceState);

                setContentView(R.layout.main);

                addPreferencesFromResource(R.xml.settings);

               

                //setup any other views that you have

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

textView.setText("View Added");

        }

}

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Handling Looper.prepare() in android.....

Handling Looper.prepare() in android.....

   September 28, 2014       Unknown

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This article shows how to handle Looper.prepare() in android.

Show Toast inside Thread by using UiThread.

new Thread() {
        @Override
        public void run() {
               try {
                     // code runs in a thread
                     runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                dialog.dismiss();
                            }
                     });
               } catch (final Exception ex) {
                   Log.i("---","Exception in thread");
               }
        }
 }.start();

This will avoid Looper.prepare() in android.

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Installing & Uninstalling Home Screen Shortcut.....

Installing & Uninstalling Home Screen Shortcut.....

   September 03, 2014       Unknown

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This Article shows to create installing & uninstalling home screen shortcut.

1- Create method for adding shortcut to home screen(addShortcut()).

private void addShortcut() {

Intent shortcut = new Intent(this, MainActivity.class);

shortcut.setAction(Intent.ACTION_MAIN);

Intent add = new Intent();

add.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcut);

add.putExtra(Intent.EXTRA_SHORTCUT_NAME, "Your Activity Name");

add.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, Intent.ShortcutIconResource.fromContext(this, R.drawable.ic_launcher));

add.setAction("com.android.launcher.action.INSTALL_SHORTCUT");

sendBroadcast(add);

    }

2- Create method for removing shortcut from home screen(removeShortcut()).

private void removeShortcut() {

Intent shortcut = new Intent(this, MainActivity.class);

shortcut.setAction(Intent.ACTION_MAIN);

Intent add = new Intent();

add.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcut);

add.putExtra(Intent.EXTRA_SHORTCUT_NAME, "Your Activity Name");

add.setAction("com.android.launcher.action.UNINSTALL_SHORTCUT");

sendBroadcast(add);

    }

3- Add following permissions to Manifest.xml.

<uses-permission        android:name="com.android.launcher.permission.INSTALL_SHORTCUT" />

<uses-permission          android:name="com.android.launcher.permission.UNINSTALL_SHORTCUT" />

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Creating SimpleAdapter for ListView in Android.....

Creating SimpleAdapter for ListView in Android.....

   August 14, 2014       Unknown

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This Article shows to create SimpleAdapter for ListView in Android.

1- Create row xml for ListView(row.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="wrap_content"
     android:orientation="vertical">
     <TextView android:id="@+id/text1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"/>
     <TextView android:id="@+id/text2"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_weight="1"/>
     <TextView android:id="@+id/text3"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_weight="1"/>
</LinearLayout>

2- Create ListActivity(MainActivity.java).

import java.util.ArrayList;

import java.util.HashMap;

import android.app.ListActivity;

import android.os.Bundle;

import android.widget.SimpleAdapter;

public class Abc extends ListActivity { 

@Override

protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

ArrayList<HashMap<String, String>> list =

                  new ArrayList<HashMap<String, String>>();

String[] from = new String[] {"Text1", "Text2", "Text3"};

int[] to = new int[] {R.id.text1, R.id.text2, R.id.text3};

for(int i=0; i<3; i++) {

HashMap<String,String> map = new HashMap<String, String>();

//initialize row data

map.put(from[i], "Text" + i);

list.add(map);

}

setListAdapter(new SimpleAdapter(this, list, R.layout.row, from, to));

}

}

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Creating ListActivity & BaseAdapter in Android.....

Creating ListActivity & BaseAdapter in Android.....

   August 07, 2014       Unknown

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This article shows to create ListActivity & BaseAdapter in Android.

1- Create BaseAdapter for ListActivity(MyAdapter.java).

import android.app.Activity;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.TextView;

public class MyAdapter extends BaseAdapter {

private Activity activity;

private String[] str;

public MyAdapter(Activity c, String[] str)

{

this.activity = c;

this.str = str;

}

@Override

public int getCount() {

// TODO Auto-generated method stub

return (str.length);

}

@Override

public Object getItem(int arg0) {

// TODO Auto-generated method stub

return str[arg0];

}

@Override

public long getItemId(int arg0) {

// TODO Auto-generated method stub

return arg0;

}

@Override

public View getView(int arg0, View arg1, ViewGroup arg2) {

// TODO Auto-generated method stub

TextView txtView;

if(arg1 == null)

{

        txtView= new TextView(activity);

txtView.setPadding(15,15,15,15);

}

else

txtView= (TextView) arg1;

txtView.setText(str[arg0].toString());

txtView.setTextSize(20);

return txtView;

}

}

2- Create ListActivity(MainActivity.java).

import android.app.ListActivity;

import android.os.Bundle;

public class MainActivity extends ListActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

setListAdapter(new MyAdapter(this, new String[]{"Android", "PHP", "ASP.NET", "iPhone"}));

}

}

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Creating animated dialog in android…..

Creating animated dialog in android…..

   August 06, 2014       Unknown

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This article shows you to create animated dialog in android.

1- Create anim folder inside resoures(res).

2- Create xml for slide in dialog(slide_in.xml) in anim.

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

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

    android:duration="500"

    android:fromYDelta="100%p"

    android:toYDelta="0%p" />

3- Create xml for slide out dialog(slide_out.xml) in anim.

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

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

    android:duration="500"

    android:fromYDelta="0%p"

    android:toYDelta="100%p" />

4- Create style for animation in styles.xml.

<style name="DialogAnimation">

        <item name="android:windowEnterAnimation">@anim/slide_in</item>

        <item name="android:windowExitAnimation">@anim/slide_out</item>

</style>

<style name="AnimatedDialogTheme" parent="@android:style/Theme.Panel">

        <item name="android:windowAnimationStyle">@style/DialogAnimation</item>

</style>

5- In Java file initialize dialog as-

//Use try catch to avoid Exception in lower api devices

try {

dialog = new Dialog(this, R.style.AnimatedDialogTheme);

} catch(Exception ex) {

dialog = new Dialog(this);

}

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Creating custom toast using xml.....

Creating custom toast using xml.....

   August 05, 2014       Unknown

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This article shows you to create custom toast in android.

1- Create xml for Toast(toast.xml).

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:id="@+id/toast_layout_root"
              android:orientation="horizontal"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:padding="8dp"
              android:background="@drawable/image"
              >    
    <TextView android:id="@+id/text"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:text=""
              android:textColor="#000"
              android:textSize="20sp"
              />   
</LinearLayout>

2- Create Activity Class(MainActivity.java).

import android.app.Activity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {

private TextView textview;

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button pressMe = (Button) findViewById(R.id.button1);
pressMe.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
showCustomToast("Hey! I'm Toast.");
}
});
}

protected void showCustomToast(String msg) {
// TODO Auto-generated method stub
LayoutInflater inflater = getLayoutInflater();
View layout = inflater.inflate(R.layout.toast_layout,(ViewGroup)                                         findViewById(R.id.toast_layout_root));
textview = (TextView) layout.findViewById(R.id.text);
textview.setText("" + text);
Toast toast = new Toast(this);
toast.setGravity(Gravity.CENTER_VERTICAL, 0, 0);/* Replace (0,0) to corresponding (x,y) to set position of toast.*/
toast.setView(layout);
toast.setDuration(Toast.LENGTH_SHORT);
toast.show();
}
}

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Creating custom dialog using xml.....

Creating custom dialog using xml.....

   August 05, 2014       Unknown

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This tutorial show you how to create a custom dialog in Android.

          1-  Create activity & custom dialog layout xml file.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:gravity="center" >

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Press me!" />

</LinearLayout>

custom_dialog.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >


    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hey! I'm Dialog."
        android:textAppearance="?android:attr/textAppearanceLarge" />


    <Button
        android:id="@+id/but"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Press Me!" />


</LinearLayout>

2-  Create Activity Class.

MainActivity.java

package com.example.customdialog;

import android.app.Activity;

import android.app.Dialog;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

public class MainActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

Button pressMe = (Button) findViewById(R.id.button1);

pressMe.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

showCustomDialog();

}

});

}

protected void showCustomDialog() {

// TODO Auto-generated method stub

final Dialog dialog = new Dialog(this);

dialog.setTitle("Custom Dialog");

dialog.setContentView(R.layout.custom_dialog);

Button button = (Button) dialog.findViewById(R.id.but);

button.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

dialog.dismiss();

}

});

dialog.show();

}

}

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