Upgrade to current times

.gitignore

@@ -0,0 +1,14 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx

app/.gitignore

@@ -0,0 +1 @@
+/build

app/build.gradle

@@ -0,0 +1,29 @@
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 29
+    buildToolsVersion "29.0.2"
+    defaultConfig {
+        applicationId "org.instk.demo_1001"
+        minSdkVersion 14
+        targetSdkVersion 29
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'com.googlecode.efficient-java-matrix-library:ejml:0.21'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+}

app/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/org/instk/demo_1001/ExampleInstrumentedTest.java

@@ -0,0 +1,27 @@
+package org.instk.demo_1001;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+
+        assertEquals("org.instk.demo_1001", appContext.getPackageName());
+    }
+}

app/src/main/AndroidManifest.xml

@@ -0,0 +1,29 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="org.instk.demo_1001">
+
+    <uses-feature
+        android:glEsVersion="0x00020000"
+        android:required="true" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme" >
+        <activity
+            android:name=".MainActivity"
+            android:configChanges="keyboard|keyboardHidden|orientation|screenSize"
+            android:label="@string/app_name"
+            android:screenOrientation="landscape">
+            <intent-filter>
+                <!-- Using data in MainActivity activity, make icon vanish-->
+                <!--data android:scheme="project"/-->
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

src/org/instk/demo_1001/main.java → app/src/main/java/org/instk/demo_1001/MainActivity.java

@@ -25,7 +25,7 @@
 import android.widget.LinearLayout;
 import android.widget.TextView;
 
-public class main extends Activity implements OnClickListener, SensorEventListener{
+public class MainActivity extends Activity implements OnClickListener, SensorEventListener{
 
 	private final float N2S=1000000000f;
 
@@ -73,7 +73,7 @@ public class main extends Activity implements OnClickListener, SensorEventListen
 	float[] vr_b=new float[3];
 	float[] mx_a=new float[9];
 
-	public main() {
+	public MainActivity() {
 		mCube=new MyCube(INIPos, INICbn);
 		mINS=new INS(INIPos, INIVel, INICbn);
 		mKalman=new Kalman();