Simplify down a bit

.gitignore

@@ -2,4 +2,5 @@
 *.class
 *.dex
 *.jks
+*.apk.idsig
 R.java

AndroidManifest.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
- package="coffee.source.helloworld"
+ package="helloworld"
  versionCode="0"
  versionName="0">
     <uses-sdk android:minSdkVersion="19"/>

HelloWorld.java

@@ -1,12 +1,22 @@
-package coffee.source.helloworld;
-
+import helloworld.R;
 import android.app.Activity;
 import android.os.Bundle;
 import android.widget.TextView;
+import java.net.HttpURLConnection;
+import java.net.URL;
 
 public class HelloWorld extends Activity {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
+
+        try {
+            URL url = new URL("https://slcl.privatedns.org");
+
+            HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
+        } catch (Exception e) {
+            //TODO: handle exception
+        }
+
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 

Makefile

@@ -1,48 +1,55 @@
-ANDROIDSDK=/usr/lib/android-sdk/build-tools/debian
-PLATFORM=/usr/lib/android-sdk/platforms/android-23/android.jar
-MINSDK=19
-APP=src/coffee/source/helloworld
+.POSIX:
 
-CLASSES=$(patsubst %.java,%.class,$(wildcard $(APP)/*.java))
+PROJECT = helloworld
+ANDROIDSDK = /usr/lib/android-sdk
+DX = $(ANDROIDSDK)/build-tools/debian/dx
+PLATFORM = $(ANDROIDSDK)/platforms/android-23/android.jar
+OBJECTS = \
+	HelloWorld.class
+RESOURCES = \
+	res/layout/activity_main.xml
+R = helloworld/R.java
 
 # Resources:
 # https://www.hanshq.net/command-line-android.html
 
-helloworld.apk: helloworld.aligned.apk keystore.jks
-	apksigner sign --ks keystore.jks --ks-key-alias androidkey --ks-pass pass:android --key-pass pass:android --out $@ $<
+$(PROJECT).apk: $(PROJECT).aligned.apk keystore.jks
+	apksigner sign \
+		--ks keystore.jks \
+		--ks-key-alias androidkey \
+		--ks-pass pass:android \
+		--key-pass pass:android \
+		--out $@ $<
 
 keystore.jks:
-	keytool -genkeypair -keystore $@ -alias androidkey -validity 10000 -keyalg RSA -keysize 2048 -storepass android -keypass android
+	keytool \
+		-genkeypair \
+		-keystore $@ \
+		-alias androidkey \
+		-validity 10000 \
+		-keyalg RSA \
+		-keysize 4096 \
+		-storepass android \
+		-keypass android
 
-helloworld.aligned.apk: helloworld.unsigned.apk
+$(PROJECT).aligned.apk: $(PROJECT).unsigned.apk
 	zipalign -f -p 4 $< $@
 
-helloworld.unsigned.apk: dex/classes.dex AndroidManifest.xml
-	aapt package -f -v -F $@ -I $(PLATFORM) -M AndroidManifest.xml -S res dex
+$(PROJECT).unsigned.apk: dex/classes.dex AndroidManifest.xml
+	aapt package -f -F $@ -I $(PLATFORM) -M AndroidManifest.xml -S res dex
 
-dex/classes.dex: $(CLASSES)
-	[ -e dex ] || mkdir dex
-	$(ANDROIDSDK)/dx --dex --verbose --min-sdk-version=$(MINSDK) --output=$@ src
+dex/classes.dex: $(OBJECTS) AndroidManifest.xml
+	mkdir -p dex
+	$(DX) --dex --output=$@ $(OBJECTS)
 
-$(APP)/HelloWorld.class: $(APP)/*.java $(APP)/R.java
-	javac -bootclasspath $(PLATFORM) -classpath src -source 1.7 -target 1.7 $^
+$(OBJECTS): $(OBJECTS:.class=.java) $(R)
+	javac -bootclasspath $(PLATFORM) -source 1.7 *.java
 
-$(APP)/R.java: AndroidManifest.xml res/*
-	aapt package -f -m -J src -S res -M AndroidManifest.xml -I $(PLATFORM)
+$(R): AndroidManifest.xml $(RESOURCES)
+	aapt package -f -m -S res -M AndroidManifest.xml -I $(PLATFORM) -J .
 
 clean:
-	rm -vf	$(APP)/R.java \
-		$(APP)/*.class \
-		*.unsigned.apk \
-		*.aligned.apk \
-		dex/*.dex
+	rm -f $(R) *.java.class *.unsigned.apk *.aligned.apk *.apk.idsig dex/*.dex
 
 distclean: clean
-	[ ! -d dex ] || rmdir dex
-	rm -vf *.apk
-
-squeaky-clean: distclean
-	@echo 'Warning! This will remove your signing keys!'
-	@echo 'You have 5 seconds to press CTRL-C'
-	@sleep 5
-	rm -vf *.jks
+	rm -rf dex/ *.apk keystore.jks