Address lint security issues

src/googleplay/AndroidManifest.xml

@@ -138,6 +138,7 @@
                 android:value=".dashclock.DashClockSettings" />
         </service>
 
+        <!--suppress AndroidLintExportedPreferenceActivity -->
         <activity android:name=".dashclock.DashClockSettings"
             android:label="@string/app_name"
             android:exported="true" />

src/main/AndroidManifest.xml

@@ -198,12 +198,13 @@
             android:theme="@style/Tasks" />
 
         <!-- Activity that configures widget -->
+        <!--suppress AndroidLintExportedPreferenceActivity -->
         <activity
             android:name=".widget.WidgetConfigActivity"
             android:taskAffinity=""
             android:label="@string/widget_settings"
             android:excludeFromRecents="true"
-            android:theme="@style/TranslucentDialog">
+            android:theme="@style/Tasks" >
             <intent-filter>
                 <action android:name="android.appwidget.action.APPWIDGET_CONFIGURE" />
             </intent-filter>

src/main/java/com/todoroo/astrid/calls/PhoneStateChangedReceiver.java

@@ -41,6 +41,10 @@ public class PhoneStateChangedReceiver extends InjectingBroadcastReceiver {
     public void onReceive(final Context context, Intent intent) {
         super.onReceive(context, intent);
 
+        if (!intent.getAction().equals(TelephonyManager.ACTION_PHONE_STATE_CHANGED)) {
+            return;
+        }
+
         if (!preferences.fieldMissedPhoneCalls()) {
             preferences.clear(PREF_LAST_INCOMING_NUMBER);
             return;

src/main/java/org/tasks/receivers/BootCompletedReceiver.java

@@ -19,6 +19,10 @@ public class BootCompletedReceiver extends InjectingBroadcastReceiver {
     public void onReceive(Context context, Intent intent) {
         super.onReceive(context, intent);
 
+        if (!intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
+            return;
+        }
+
         Timber.d("onReceive(context, %s)", intent);
 
         backgroundScheduler.scheduleEverything();

src/main/java/org/tasks/receivers/MyPackageReplacedReceiver.java

@@ -19,6 +19,10 @@ public class MyPackageReplacedReceiver extends InjectingBroadcastReceiver {
     public void onReceive(Context context, Intent intent) {
         super.onReceive(context, intent);
 
+        if (!intent.getAction().equals(Intent.ACTION_MY_PACKAGE_REPLACED)) {
+            return;
+        }
+
         Timber.d("onReceive(context, %s)", intent);
 
         backgroundScheduler.scheduleEverything();