Create TemperatureWidget class and register with Temperature sensor intend
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package com.javaorigin.widget;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.widget.RemoteViews;
package com.javaorigin.widget;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.widget.RemoteViews;
public class TemperatureWidget extends AppWidgetProvider {
double temp=0;
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
context.getApplicationContext().registerReceiver(this,new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
updateUI(context) ;
}
@Override
public void onReceive(Context context, Intent intent) {
temp=intent.getIntExtra("temperature", 0)/10.0D;
updateUI(context) ;
super.onReceive(context, intent);
}
private void updateUI(Context context) {
RemoteViews thisViews = new RemoteViews(context.getApplicationContext() .getPackageName(), R.layout.widget_layout);
thisViews.setTextViewText(R.id.update, temp + "");
ComponentName thisWidget = new ComponentName(context,TemperatureWidget.class);
AppWidgetManager.getInstance(context).updateAppWidget(thisWidget,thisViews);
}
}
Create widget_layout.xml under res/layout folder
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="8dip"
android:background="@drawable/myshape" >
<TextView
android:id="@+id/update"
style="@android:style/TextAppearance.Medium"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:gravity="center_horizontal|center_vertical"
android:layout_margin="4dip"
android:text="Static Text" >
</TextView>
</LinearLayout>
Create myshape.xml under res/drawable folder
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" >
<stroke
android:width="2dp"
android:color="#FFFFFFFF" />
<gradient
android:angle="225"
android:endColor="#DD2ECCFA"
android:startColor="#DD000000" />
<corners
android:bottomLeftRadius="7dp"
android:bottomRightRadius="7dp"
android:topLeftRadius="7dp"
android:topRightRadius="7dp" />
</shape>
Create widget_info.xml under res/xml folder
,We can create this xml file using " File-->New --> Android xml file " menu with resource type is AppWidget Provider option ,then set attribute
android:widgetCategory="keyguard|home_screen"
<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
android:initialLayout="@layout/widget_layout"
android:minHeight="20dp"
android:minWidth="20dp"
android:updatePeriodMillis="30000" android:widgetCategory="keyguard|home_screen">
</appwidget-provider>
Configure android manifest xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.javaorigin.widget"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<receiver android:name="TemperatureWidget" >
<intent-filter >
<action
android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data
android:name="android.appwidget.provider"
android:resource="@xml/widget_info" />
</receiver>
</application>
</manifest>
