├── .gitignore
├── res
    ├── drawable-xhdpi
    │   └── icon.png
    └── layout
    │   └── activity_main.xml
├── README.md
├── src
    └── pl
    │   └── czak
    │       └── handbuilt
    │           └── MainActivity.java
├── AndroidManifest.xml
└── Makefile


/.gitignore:
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1 | build
2 | 


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/res/drawable-xhdpi/icon.png:
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https://raw.githubusercontent.com/czak/handbuilt-android-project/HEAD/res/drawable-xhdpi/icon.png


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/README.md:
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1 | # handbuilt-android-project
2 | 
3 | This is a companion project to my blog post [Jack, Jill & building Android apps by hand](http://czak.pl/2016/05/31/handbuilt-android-project.html).
4 | 
5 | I'm exploring building an Android app "by hand" (i.e. without and IDE or Gradle even).
6 | 
7 | For the tl;dr version, see the [Makefile](Makefile)
8 | 


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/res/layout/activity_main.xml:
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 1 | <?xml version="1.0" encoding="utf-8"?>
 2 | <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3 |               android:layout_width="match_parent"
 4 |               android:layout_height="match_parent">
 5 | 
 6 |     <ImageView
 7 |         android:id="@+id/image"
 8 |         android:layout_width="200dp"
 9 |         android:layout_height="200dp"
10 |         android:layout_gravity="center" />
11 | 
12 | </FrameLayout>
13 | 


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/src/pl/czak/handbuilt/MainActivity.java:
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 1 | package pl.czak.handbuilt;
 2 | 
 3 | import android.app.Activity;
 4 | import android.os.Bundle;
 5 | import android.widget.ImageView;
 6 | 
 7 | import com.squareup.picasso.Picasso;
 8 | 
 9 | public class MainActivity extends Activity
10 | {
11 |     @Override
12 |     public void onCreate(Bundle savedInstanceState) {
13 |         super.onCreate(savedInstanceState);
14 |         setContentView(R.layout.activity_main);
15 | 
16 |         ImageView imageView = (ImageView) findViewById(R.id.image);
17 |         Picasso.with(this).load("http://i.imgur.com/DvpvklR.png").into(imageView);
18 |     }
19 | }
20 | 


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/AndroidManifest.xml:
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 1 | <?xml version="1.0" encoding="utf-8"?>
 2 | <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3 |     package="pl.czak.handbuilt" >
 4 | 
 5 |     <uses-sdk android:minSdkVersion="N"
 6 |               android:targetSdkVersion="N" />
 7 | 
 8 |     <uses-permission android:name="android.permission.INTERNET" />
 9 | 
10 |     <application android:label="Handbuilt"
11 |                  android:icon="@drawable/icon">
12 |         <activity android:name="pl.czak.handbuilt.MainActivity" >
13 |             <intent-filter>
14 |                 <action android:name="android.intent.action.MAIN" />
15 |                 <category android:name="android.intent.category.LAUNCHER" />
16 |             </intent-filter>
17 |         </activity>
18 |     </application>
19 | 
20 | </manifest>
21 | 


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/Makefile:
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  1 | # Environment variables
  2 | ANDROID_HOME ?=
  3 | 
  4 | # Build tools & SDK versions
  5 | build_tools := 24.0.0-preview
  6 | target      := android-n
  7 | 
  8 | # Variables
  9 | project     := handbuilt
 10 | package     := pl.czak.handbuilt
 11 | 
 12 | src_dir     := src
 13 | res_dir     := res
 14 | 
 15 | lib_dir     := build/libraries
 16 | gen_dir     := build/generated
 17 | int_dir     := build/intermediate
 18 | out_dir     := build/output
 19 | 
 20 | sources     := $(shell find $(src_dir) -name '*.java')
 21 | resources   := $(shell find $(res_dir) -type f)
 22 | generated   := $(gen_dir)/pl/czak/handbuilt/R.java
 23 | libraries   := $(lib_dir)/com/squareup/picasso/picasso/2.5.2/picasso-2.5.2.jar
 24 | 
 25 | # Final zipaligned APK
 26 | $(out_dir)/$(project).apk: $(out_dir)/$(project)-unaligned.apk
 27 | 	@echo -n Zipaligning...
 28 | 	@zipalign -f 4 $< $@
 29 | 	@echo Done.
 30 | 
 31 | # Packaging the APK
 32 | $(out_dir)/$(project)-unaligned.apk: $(out_dir) AndroidManifest.xml $(resources) $(int_dir)/classes.dex
 33 | 	@echo -n Packaging...
 34 | 	@aapt package -f \
 35 | 		-M AndroidManifest.xml \
 36 | 		-I $(ANDROID_HOME)/platforms/$(target)/android.jar \
 37 | 		-S $(res_dir) \
 38 | 		-F $@
 39 | 	@cd $(int_dir) && aapt add $(abspath $@) classes.dex > /dev/null
 40 | 	@echo Done.
 41 | 	@echo -n Signing the APK...
 42 | 	@jarsigner -verbose \
 43 | 		-keystore ~/.android/debug.keystore \
 44 | 		-storepass android \
 45 | 		-keypass android \
 46 | 		$@ \
 47 | 		androiddebugkey \
 48 | 		> /dev/null
 49 | 	@echo Done.
 50 | 
 51 | # Compilation & dexing w/ Jack
 52 | $(int_dir)/classes.dex: $(int_dir) $(sources) $(generated) $(libraries)
 53 | 	@echo -n Compiling with Jack...
 54 | 	@java -jar $(ANDROID_HOME)/build-tools/$(build_tools)/jack.jar \
 55 | 		--classpath $(ANDROID_HOME)/platforms/$(target)/android.jar \
 56 | 		$(foreach lib,$(libraries),--import $(lib)) \
 57 | 		--output-dex $(int_dir) \
 58 | 		$(sources) $(generated)
 59 | 	@echo Done.
 60 | 
 61 | # Generating R.java based on the manifest and resources
 62 | $(generated): $(gen_dir) AndroidManifest.xml $(resources)
 63 | 	@echo -n Generating R.java... 
 64 | 	@aapt package -f \
 65 | 		-M AndroidManifest.xml \
 66 | 		-I $(ANDROID_HOME)/platforms/$(target)/android.jar \
 67 | 		-S $(res_dir) \
 68 | 		-J $(gen_dir) \
 69 | 		-m
 70 | 	@echo Done.
 71 | 
 72 | # Fetching dependencies from Maven Central
 73 | $(libraries):
 74 | 	@echo -n Fetching dependency $(notdir $@)... 
 75 | 	@curl --silent \
 76 | 		    --location \
 77 |         --output $@ \
 78 |         --create-dirs \
 79 |         http://search.maven.org/remotecontent?filepath=$(subst $(lib_dir)/,,$@)
 80 | 	@echo Done.
 81 | 
 82 | # Subfolders in build/
 83 | $(gen_dir) $(out_dir) $(int_dir):
 84 | 	@mkdir -p $@
 85 | 
 86 | .PHONY: clean
 87 | clean:
 88 | 	rm -rf build
 89 | 
 90 | .PHONY: install
 91 | install: $(out_dir)/$(project).apk
 92 | 	adb install -r $<
 93 | 
 94 | .PHONY: uninstall
 95 | uninstall:
 96 | 	adb uninstall $(package)
 97 | 
 98 | .PHONY: run
 99 | run:
100 | 	adb shell am start $(package)/.MainActivity
101 | 


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