Version 1.0.0

.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="src" path="gen"/>
+	<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/>
+	<classpathentry exported="true" kind="con" path="com.android.ide.eclipse.adt.LIBRARIES"/>
+	<classpathentry exported="true" kind="con" path="com.android.ide.eclipse.adt.DEPENDENCIES"/>
+	<classpathentry kind="output" path="bin/classes"/>
+</classpath>

.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>TactileClock</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.PreCompilerBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.ApkBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>com.android.ide.eclipse.adt.AndroidNature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="de.eric_scheibler.tactileclock"
+    android:versionCode="1"
+    android:versionName="1.0.0" >
+
+    <uses-sdk
+        android:minSdkVersion="14"
+        android:targetSdkVersion="23" />
+
+    <!-- permissions -->
+    <uses-permission android:name="android.permission.VIBRATE" />
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/AppTheme" >
+
+        <activity
+            android:name=".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=".TactileClockService" />
+
+        <receiver
+            android:name=".ScreenReceiver" >
+            <intent-filter>
+                <action android:name="android.intent.action.BOOT_COMPLETED" />
+            </intent-filter>
+        </receiver>
+
+    </application>
+
+</manifest>

CHANGES

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+v1.0.0: 2016.05.03:
+- initial release.
+

README.md

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+TactileClock
+============
+
+This Android app vibrates the current time when the display is locked and the power button is
+pressed twice in a row with a delay between 500 and 1500 milliseconds. It is started automatically
+after booting is finished. Android version >= 4.0 is supported.
+
+The time is processed digit by digit. Vibration Pattern: short = 1, long = 5.
+
+Examples:
+
+- 02:11 = short . short ... short ..  short
+- 10:53 = short .. long . long ... long .. short . short .  short
+
+This app is also available in the [Play Store](https://play.google.com/store/apps/details?id=de.eric_scheibler.tactileclock&hl=en).
+

project.properties

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+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file must be checked in Version Control Systems.
+#
+# To customize properties used by the Ant build system edit
+# "ant.properties", and override values to adapt the script to your
+# project structure.
+#
+# To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
+#proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
+
+# Project target.
+target=android-23

res/layout/activity_main.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin" >
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical" >
+
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:focusable="true"
+            android:text="@string/labelApplicationDescription1" />
+
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="5dp"
+            android:focusable="true"
+            android:text="@string/labelApplicationDescription2" />
+
+        <Switch
+            android:id="@+id/buttonTimeFormat"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="20dp"
+            android:text="@string/buttonTimeFormat" />
+
+    </LinearLayout>
+</ScrollView>

res/values-de/strings.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <string name="app_name">TactileClock</string>
+    <string name="labelApplicationDescription1">Diese App gibt die aktuelle Uhrzeit als
+        Vibrationspattern aus. Dazu muss das Display abgeschaltet sein und der Power-Button zweimal
+        kurz hintereinander betätigt werden (Interwall von 500 bis 1500 Millisekunden). Die App
+        startet automatisch nach dem Booten des Geräts.</string>
+    <string name="labelApplicationDescription2">Die Uhrzeit wird Ziffer für Ziffer
+        verarbeitet.\nVibrationspattern: kurz = 1, lang = 5\n\nBeispiele:\n- 02:11 = kurz . kurz ...
+        kurz .. kurz\n- 10:53 = kurz .. lang . lang ... lang .. kurz . kurz . kurz</string>
+    <string name="buttonTimeFormat">Zeitformat: 24 Stunden</string>
+
+</resources>

res/values/dimens.xml

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+<resources>
+
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <dimen name="activity_vertical_margin">16dp</dimen>
+
+</resources>

res/values/strings.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <string name="app_name">TactileClock</string>
+    <string name="labelApplicationDescription1">This app vibrates the current time when the display
+        is locked and the power button is pressed twice in a row with a delay between 500 and 1500
+        milliseconds. It is started automatically after booting is finished.</string>
+    <string name="labelApplicationDescription2">The time is processed digit by digit.\nVibration
+        Pattern: short = 1, long = 5\n\nExamples:\n- 02:11 = short . short ... short ..
+        short\n- 10:53 = short .. long . long ... long .. short . short .  short</string>
+    <string name="buttonTimeFormat">Time format: 24 hours</string>
+
+</resources>

res/values/styles.xml

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+<resources>
+
+    <!-- Base application theme -->
+    <style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar">
+        <!-- default font size -->
+        <item name="android:textSize">22sp</item>
+    </style>
+
+</resources>

src/de/eric_scheibler/tactileclock/MainActivity.java

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+package de.eric_scheibler.tactileclock;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.content.SharedPreferences.Editor;
+import android.os.Bundle;
+import android.preference.PreferenceManager;
+import android.text.format.DateFormat;
+import android.widget.CompoundButton;
+import android.widget.Switch;
+
+public class MainActivity extends Activity {
+
+	@Override protected void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+		setContentView(R.layout.activity_main);
+
+        // set 24 hour format option on first application start based on user selection
+        SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(this);
+        if (! settings.contains(TactileClockService.TWENTY_FOUR_HOUR_FORMAT_KEY)) {
+            store24HourFormatOption(DateFormat.is24HourFormat(this));
+        }
+
+        // toggle button to switch between 12 and 24 hour format
+        Switch buttonTimeFormat = (Switch) findViewById(R.id.buttonTimeFormat);
+        buttonTimeFormat.setChecked(
+                settings.getBoolean(TactileClockService.TWENTY_FOUR_HOUR_FORMAT_KEY, true));
+        buttonTimeFormat.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+            @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+                store24HourFormatOption(isChecked);
+            }
+        });
+
+        // start service
+        Intent intent = new Intent(this, TactileClockService.class);
+        startService(intent);
+	}
+
+    private void store24HourFormatOption(boolean checked) {
+        SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(this);
+        Editor editor = settings.edit();
+        editor.putBoolean(TactileClockService.TWENTY_FOUR_HOUR_FORMAT_KEY, checked);
+        editor.commit();
+    }
+
+}

src/de/eric_scheibler/tactileclock/ScreenReceiver.java

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+package de.eric_scheibler.tactileclock;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+
+public class ScreenReceiver extends BroadcastReceiver {
+
+    @Override public void onReceive(Context context, Intent intent) {
+        if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)
+                || intent.getAction().equals(Intent.ACTION_SCREEN_ON)
+                || intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
+            Intent i = new Intent(context, TactileClockService.class);
+            if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
+                i.putExtra("screenOn", true);
+            } else {
+                i.putExtra("screenOn", false);
+            }
+            context.startService(i);
+        }
+    }
+
+}