1.
Create
a appwidget-provider xml name it as widget_badge_icon.xml and add it in xml
folder
2.
Create
a widget_badge_layout .xml as per need.
3.
Create
a receiver in manifest file.
4.
Create
BadgeNotificationWidget Class:
package com.example.testwidget;
import java.util.Timer;
import java.util.TimerTask;
import android.app.IntentService;
import android.appwidget.AppWidgetManager;
import android.content.ComponentName;
import android.content.Intent;
import android.util.Log;
import android.view.View;
import android.widget.RemoteViews;
/**
* BadgeService is a worker thread used to send the badge number as a broadcast
* message to change the app icon.
*
*
*/
public class BadgeService extends IntentService {
int count = 0;
Timer timer;
int randomNo = 10;
public BadgeService() {
super("BadgeService");
timer = new Timer();
}
/**
* This method is invoked on the worker thread with a request to process.
*/
@Override
protected void onHandleIntent(final Intent intent) {
RemoteViews remoteView = new RemoteViews(getApplicationContext()
.getPackageName(), R.layout.widget_badge_layout);
ComponentName componentName = new ComponentName(
getApplicationContext(), BadgeNotificationWidgetActivity.class);
AppWidgetManager appWidgetManager = AppWidgetManager
.getInstance(getApplicationContext());
Log.d("BadgeNotificationWidgetActivity", "BadgeService randomNo"
+ randomNo);
if (randomNo == 0) {
remoteView.setViewVisibility(R.id.badgeNum, View.GONE);
} else {
remoteView.setViewVisibility(R.id.badgeNum, View.VISIBLE);
}
remoteView.setTextViewText(R.id.badgeNum, String.valueOf(randomNo));
// apply changes to widget
appWidgetManager.updateAppWidget(componentName, remoteView);
}
}
package com.example.testwidget;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
protected void onStart() {
super.onStart();
startService(new Intent(this, BadgeService.class));
}
@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;
}
}
package com.example.testwidget;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.ComponentName;
import android.content.Context;
import android.util.Log;
import android.widget.RemoteViews;
public class BadgeNotificationWidgetActivity extends AppWidgetProvider {
}
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.testwidget"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="@drawable/image"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.testwidget.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>
<service android:name=".BadgeService" >
</service>
<receiver
android:name="com.example.testwidget.BadgeNotificationWidgetActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data
android:name="android.appwidget.provider"
android:resource="@xml/widget_badge_icon" />
</receiver>
</application>
</manifest>
badge_circle.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval" >
<corners android:radius="10dip" />
<solid android:color="#F00" />
<stroke
android:width="5dp"
android:color="#FFF" />
<padding
android:bottom="8dp"
android:left="10dp"
android:right="10dp"
android:top="8dp" />
</shape>
widget_badge_icon.xml
<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
android:initialLayout="@layout/widget_badge_layout"
android:minHeight="40dp"
android:minWidth="40dp"
android:updatePeriodMillis="30000" >
</appwidget-provider>
Following link contains source code Sample Source
