Add a widget that allows the post code to be shown on the home screen

src/main/AndroidManifest.xml

@@ -9,6 +9,14 @@
 <category android:name="android.intent.category.LAUNCHER"></category>
 </intent-filter>
 </activity>
+        <receiver android:name="PostcodeAppWidgetProvider">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE"/>
+            </intent-filter>
+            <meta-data
+                    android:name="android.appwidget.provider"
+                    android:resource="@xml/postcode_appwidget_info"/>
+        </receiver>
 </application>
     <uses-sdk android:minSdkVersion="11" />
 

src/main/java/net/tevp/postcode/PostcodeAppWidgetProvider.java

@@ -0,0 +1,117 @@
+package net.tevp.postcode;
+
+import android.app.Activity;
+import android.app.PendingIntent;
+import android.appwidget.AppWidgetManager;
+import android.appwidget.AppWidgetProvider;
+import android.content.ClipData;
+import android.content.ClipboardManager;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.location.Location;
+import android.opengl.Visibility;
+import android.os.Build;
+import android.view.View;
+import android.widget.RemoteViews;
+import android.widget.Toast;
+
+import java.text.DateFormat;
+
+import static android.os.Build.VERSION.SDK_INT;
+
+public class PostcodeAppWidgetProvider extends AppWidgetProvider implements PostcodeListener {
+
+    private static final String ACTION_UPDATE_AND_OPEN = "ACTION_UPDATE_AND_OPEN";
+    private static final String POSTCODE_PREFERENCE_NAME = "Postcode";
+    private static final String LAST_POSTCODE_PREFERENCE_KEY = "lastPostcode";
+
+    private final PostcodeBackend pb = new PostcodeBackend();
+    private long lastLocationUpdateTime;
+    private Context context;
+
+    @Override
+    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
+        pb.getPostcode(context, this, true);
+        this.context = context;
+    }
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        super.onReceive(context, intent);
+        if(intent.getAction() == null)   {
+            if(SDK_INT > Build.VERSION_CODES.HONEYCOMB) {
+                ClipboardManager manager = (ClipboardManager) context.getSystemService(Context.CLIPBOARD_SERVICE);
+                if (manager != null) {
+                    String lastPostcode = context.getSharedPreferences(POSTCODE_PREFERENCE_NAME, Activity.MODE_PRIVATE).getString(LAST_POSTCODE_PREFERENCE_KEY,"");
+                    Toast.makeText(context, "Copied '"+lastPostcode+"' to clipboard ", Toast.LENGTH_SHORT).show();
+                    manager.setPrimaryClip(ClipData.newPlainText("Postcode", lastPostcode));
+                }
+            }
+        } else if (intent.getAction().equals(ACTION_UPDATE_AND_OPEN)) {
+            this.context = context;
+            pb.getPostcode(context, this, true);
+            context.startActivity(new Intent(context,Postcode.class));
+        }
+    }
+
+    @Override
+    public void postcodeChange(final String postcode) {
+        final ComponentName thisWidget = new ComponentName(context, PostcodeAppWidgetProvider.class);
+        final AppWidgetManager manager = AppWidgetManager.getInstance(context);
+        final RemoteViews views = buildRemoteViews(context,postcode);
+        views.setOnClickPendingIntent(R.id.postcodewidget,createUpdatePendingIntent(manager.getAppWidgetIds(thisWidget), true));
+        views.setOnClickPendingIntent(R.id.refresh, createUpdatePendingIntent(manager.getAppWidgetIds(thisWidget), false));
+
+        if(SDK_INT > 11) {
+            views.setOnClickPendingIntent(R.id.copy, createCopyPendingIntent(manager.getAppWidgetIds(thisWidget)));
+            views.setViewVisibility(R.id.copy, View.VISIBLE);
+        }
+        views.setViewVisibility(R.id.refresh, View.VISIBLE);
+        manager.updateAppWidget(thisWidget, views);
+        SharedPreferences pref = context.getSharedPreferences(POSTCODE_PREFERENCE_NAME, Activity.MODE_PRIVATE);
+        SharedPreferences.Editor editor = pref.edit();
+        editor.putString(LAST_POSTCODE_PREFERENCE_KEY, postcode);
+        editor.commit();
+    }
+
+    private PendingIntent createUpdatePendingIntent(final int[] widgetIds, boolean showPostcodeApp) {
+        final Intent update = new Intent(context, PostcodeAppWidgetProvider.class);
+        if(showPostcodeApp) {
+            update.setAction(ACTION_UPDATE_AND_OPEN);
+        }
+        else{
+            update.setAction(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
+        }
+
+        update.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, widgetIds);
+        return PendingIntent.getBroadcast(context,0,update,0);
+    }
+
+    private PendingIntent createCopyPendingIntent(final int[] widgetIds) {
+        final Intent update = new Intent(context, PostcodeAppWidgetProvider.class);
+        update.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, widgetIds);
+        return PendingIntent.getBroadcast(context,0,update,0);
+    }
+
+    @Override
+    public void updatedLocation(final Location location) {
+        lastLocationUpdateTime = location.getTime();
+    }
+
+    @Override
+    public void locationFindFail() {
+    }
+
+    @Override
+    public void postcodeLookupFail() {
+    }
+
+    private RemoteViews buildRemoteViews(final Context context,final String postCode) {
+        final RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.appwidget);
+        views.setTextViewText(R.id.postcode, postCode);
+        views.setTextViewText(R.id.time, DateFormat.getTimeInstance(DateFormat.SHORT).format(lastLocationUpdateTime));
+        return views;
+    }
+}

src/main/res/drawable/copy_button_background.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <bitmap android:tint="#000" android:src="@drawable/copy" />
+    </item>
+</layer-list>

src/main/res/drawable/refresh_button_background.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <bitmap android:tint="#000" android:src="@android:drawable/stat_notify_sync_noanim" />
+    </item>
+</layer-list>

src/main/res/layout/appwidget.xml

@@ -0,0 +1,72 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/postcodewidget"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="8dp">
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/app_name"
+        style="@style/widget_title_background"/>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical"
+        android:background="#FFF"
+        android:padding="4dp">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal">
+
+            <Button
+                android:visibility="invisible"
+                android:id="@+id/copy"
+                android:layout_width="25dp"
+                android:layout_height="25dp"
+                android:gravity="center"
+                android:layout_marginRight="5dp"
+                android:background="@drawable/copy_button_background" />
+
+            <TextView
+                android:id="@+id/postcode"
+                style="@style/widget_postcode"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center_vertical"
+                android:text="@string/locating"
+                android:textColor="@android:color/black" />
+
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal">
+
+            <Button
+                android:visibility="invisible"
+                android:id="@+id/refresh"
+                android:layout_width="25dp"
+                android:layout_height="25dp"
+                android:gravity="center"
+                android:layout_marginRight="5dp"
+                android:background="@drawable/refresh_button_background"/>
+
+            <TextView
+                android:id="@+id/time"
+                style="@style/widget_postcode"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center_vertical"
+                android:textColor="#444" />
+
+        </LinearLayout>
+    </LinearLayout>
+</LinearLayout>

src/main/res/values/dimens.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <dimen name="widget_padding">8dp</dimen>
+    <dimen name="button_width">50dp</dimen>
+    <dimen name="button_height">50dp</dimen>
+</resources>

src/main/res/values/strings.xml

@@ -2,4 +2,7 @@
 <resources>
 
     <string name="app_name">Postcode</string>
+    <string name="locating">Locating</string>
+    <string name="updating">Updating</string>
+    <string name="lookup_fail">Lookup Failed</string>
 </resources>

src/main/res/values/styles.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="widget_postcode">
+        <item name="android:textSize">20sp</item>
+    </style>
+
+    <style name="widget_title_background">
+        <item name="android:background">#F00</item>
+        <item name="android:textColor">#FFF</item>
+        <item name="android:paddingLeft">8dp</item>
+    </style>
+</resources>

src/main/res/xml/postcode_appwidget_info.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+                    android:minWidth="150dp"
+                    android:minHeight="50dp"
+                    android:updatePeriodMillis="1800000"
+                    android:widgetCategory="home_screen|keyguard"
+                    android:initialLayout="@layout/appwidget"
+                    android:initialKeyguardLayout="@layout/appwidget"
+                    android:previewImage="@drawable/preview"/>