Starting with a clean project created with:
android create project -n something -t android-7 -p something -k com.example.something -a Something
When I run ant debug install and open the application in my emulator, I see (as expected)
Here’s where it goes bad. I now change something trivial in the application. In this example, I’m going to remove the setContentView call from the main activity so it looks like this:
package com.example.something;
import android.app.Activity;
import android.os.Bundle;
public class Something extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.main); REMOVED
}
}
Now I rebuild the application with ant debug install and run it in the emulator. I see this:
This is wrong. I just removed the text with my previous edit. If I do ant clean before ant debug install, I get the expected result:
I don’t want to have to run ant clean before each time I run ant debug install. How can I make ant actually rebuild the program without running ant clean each time?
Details:
Here’s the output from the inital ant debug install:
$ ant debug install
Buildfile: /home/x/android/something/build.xml
-set-mode-check:
-set-debug-files:
-set-debug-mode:
-debug-obfuscation-check:
-setup:
[echo] Gathering info for something...
[setup] Android SDK Tools Revision 16
[setup] Project Target: Android 2.1
[setup] API level: 7
[setup]
[setup] ------------------
[setup] Resolving library dependencies:
[setup] No library dependencies.
[setup]
[setup] ------------------
[setup]
[setup] WARNING: No minSdkVersion value set. Application will install on all Android versions.
-build-setup:
[echo] Creating output directories if needed...
[mkdir] Created dir: /home/x/android/something/bin
[mkdir] Created dir: /home/x/android/something/bin/res
[mkdir] Created dir: /home/x/android/something/gen
[mkdir] Created dir: /home/x/android/something/bin/classes
-pre-build:
-code-gen:
[echo] ----------
[echo] Handling aidl files...
[aidl] No AIDL files to compile.
[echo] ----------
[echo] Handling RenderScript files...
[renderscript] No RenderScript files to compile.
[echo] ----------
[echo] Handling Resources...
[aapt] Generating resource IDs...
-pre-compile:
-compile:
[javac] Compiling 2 source files to /home/x/android/something/bin/classes
-post-compile:
-obfuscate:
-dex:
[dex] Converting compiled files and external libraries into /home/x/android/something/bin/classes.dex...
-crunch:
[crunch] Crunching PNG Files in source dir: /home/x/android/something/res
[crunch] To destination dir: /home/x/android/something/bin/res
[crunch] Crunched 0 PNG files to update cache
-package-resources:
[aapt] Creating full resource package...
-package:
[apkbuilder] Current build type is different than previous build: forced apkbuilder run.
[apkbuilder] Creating something-debug-unaligned.apk and signing it with a debug key...
-do-debug:
[zipalign] Running zip align on final apk...
[echo] Debug Package: /home/x/android/something/bin/something-debug.apk
debug:
[propertyfile] Creating new property file: /home/x/android/something/bin/build.prop
[propertyfile] Updating property file: /home/x/android/something/bin/build.prop
[propertyfile] Updating property file: /home/x/android/something/bin/build.prop
[propertyfile] Updating property file: /home/x/android/something/bin/build.prop
install:
[echo] Installing /home/x/android/something/bin/something-debug.apk onto default emulator or device...
[exec] 66 KB/s (4410 bytes in 0.065s)
[exec] pkg: /data/local/tmp/something-debug.apk
[exec] Success
BUILD SUCCESSFUL
Total time: 5 seconds
Here’s the output from the second ant debug install after the edit:
$ ant debug install
Buildfile: /home/x/android/something/build.xml
-set-mode-check:
-set-debug-files:
-set-debug-mode:
-debug-obfuscation-check:
-setup:
[echo] Gathering info for something...
[setup] Android SDK Tools Revision 16
[setup] Project Target: Android 2.1
[setup] API level: 7
[setup]
[setup] ------------------
[setup] Resolving library dependencies:
[setup] No library dependencies.
[setup]
[setup] ------------------
[setup]
[setup] WARNING: No minSdkVersion value set. Application will install on all Android versions.
-build-setup:
[echo] Creating output directories if needed...
-pre-build:
-code-gen:
[echo] ----------
[echo] Handling aidl files...
[aidl] No AIDL files to compile.
[echo] ----------
[echo] Handling RenderScript files...
[renderscript] No RenderScript files to compile.
[echo] ----------
[echo] Handling Resources...
[aapt] No changed resources. R.java and Manifest.java untouched.
-pre-compile:
-compile:
[javac] Compiling 1 source file to /home/x/android/something/bin/classes
-post-compile:
-obfuscate:
-dex:
[dex] No new compiled code. No need to convert bytecode to dalvik format.
-crunch:
[crunch] Crunching PNG Files in source dir: /home/x/android/something/res
[crunch] To destination dir: /home/x/android/something/bin/res
[crunch] Crunched 0 PNG files to update cache
-package-resources:
[aapt] No changed resources or assets. something.ap_ remains untouched
-package:
[apkbuilder] No changes. No need to create apk.
-do-debug:
[zipalign] No changes. No need to run zip-align on the apk.
[echo] Debug Package: /home/x/android/something/bin/something-debug.apk
debug:
[propertyfile] Updating property file: /home/x/android/something/bin/build.prop
[propertyfile] Updating property file: /home/x/android/something/bin/build.prop
[propertyfile] Updating property file: /home/x/android/something/bin/build.prop
[propertyfile] Updating property file: /home/x/android/something/bin/build.prop
install:
[echo] Installing /home/x/android/something/bin/something-debug.apk onto default emulator or device...
[exec] 88 KB/s (4410 bytes in 0.048s)
[exec] pkg: /data/local/tmp/something-debug.apk
[exec] Success
BUILD SUCCESSFUL
Total time: 3 seconds
Notice that the -dex, -package, and -debug steps all seem to think that I didn’t change anything.
I’ve just downgraded to SDK r15 — there’s no such bug in it.
Downloads are still there:
http://dl.google.com/android/android-sdk_r15-linux.tgz
http://dl.google.com/android/android-sdk_r15-windows.zip
http://dl.google.com/android/installer_r15-windows.exe
http://dl.google.com/android/android-sdk_r15-macosx.zip
Most relevant issue in android’s bugtracker for SDK r16 bug:
http://code.google.com/p/android/issues/detail?id=23141