运行android-cmd.bat,使用cd命令切换到samples/hello-jni目录下,

运行android update project -p . -s,会生成build.xml文件,用于ant命令,要注意的是,编译的时候会发生错误,提示:

Error: The project either has no target set or the target is invalid.

Please provide a --target to the 'android.bat update' command.

这个时候,可以使用android list targets命令来查看当前系统中的android模拟器,我有两个,如下:

I:\android\android-ndk-r7c\samples\native-activity>android.bat list targets

Available Android targets:

----------

id: 1 or "android-8"

     Name: Android 2.2

     Type: Platform

     API level: 8

     Revision: 1

     Skins: HVGA, QVGA, WQVGA400, WQVGA432, WVGA800 (default), WVGA854

     ABIs : armeabi

----------

id: 2 or "android-10"

     Name: Android 2.3.3

     Type: Platform

     API level: 10

     Revision: 2

     Skins: HVGA, QVGA, WQVGA400, WQVGA432, WVGA800 (default), WVGA854

     ABIs : armeabi

如果没有的话,需要使用SDK的AVD Manager来创建一个就可以了.而我使用的是android 2.3.3的模拟器,所以我的编译命令是:

I:\android\android-ndk-r7c\samples\native-activity>android update project -p . -

t android-10 -s

Updated and renamed default.properties to project.properties

Updated local.properties

No project name specified, using Activity name 'NativeActivity'.

If you wish to change it, edit the first line of build.xml.

Added file I:\android\android-ndk-r7c\samples\native-activity\build.xml

Added file I:\android\android-ndk-r7c\samples\native-activity\proguard.cfg

从上面看出,已经生成了build.xml文件了.

 

运行ant debug命令,输出如下:

I:\android\android-ndk-r7c\samples\hello-jni>ant debug

Buildfile: I:\android\android-ndk-r7c\samples\hello-jni\build.xml

-set-mode-check:

-set-debug-files:

-set-debug-mode:

-debug-obfuscation-check:

-setup:

     [echo] Gathering info for HelloJni...

    [setup] Android SDK Tools Revision 16

    [setup] Project Target: Android 2.2

    [setup] API level: 8

    [setup]

    [setup] ------------------

    [setup] Resolving library dependencies:

    [setup] No library dependencies.

    [setup]

    [setup] ------------------

    [setup]

    [setup] WARNING: Attribute minSdkVersion in AndroidManifest.xml (3) is lower

 than the project target API level (8)

-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] Found Deleted Target File

     [aapt] Generating resource IDs...

-pre-compile:

-compile:

    [javac] Compiling 2 source files to I:\android\android-ndk-r7c\samples\hello

-jni\bin\classes

-post-compile:

-obfuscate:

-dex:

      [dex] Converting compiled files and external libraries into I:\android\and

roid-ndk-r7c\samples\hello-jni\bin\classes.dex...

-crunch:

   [crunch] Crunching PNG Files in source dir: I:\android\android-ndk-r7c\sample

s\hello-jni\res

   [crunch] To destination dir: I:\android\android-ndk-r7c\samples\hello-jni\bin

\res

   [crunch] Crunched 0 PNG files to update cache

-package-resources:

     [aapt] Creating full resource package...

     [aapt] Warning: AndroidManifest.xml already defines debuggable (in

chemas.android.com/apk/res/android); using existing value in manifest.

-package:

[apkbuilder] Current build type is different than previous build: forced apkbuil

der run.

[apkbuilder] Creating HelloJni-debug-unaligned.apk and signing it with a debug k

ey...

-do-debug:

 [zipalign] Running zip align on final apk...

     [echo] Debug Package: I:\android\android-ndk-r7c\samples\hello-jni\bin\Hell

oJni-debug.apk

debug:

[propertyfile] Creating new property file: I:\android\android-ndk-r7c\samples\he

llo-jni\bin\build.prop

[propertyfile] Updating property file: I:\android\android-ndk-r7c\samples\hello-

jni\bin\build.prop

[propertyfile] Updating property file: I:\android\android-ndk-r7c\samples\hello-

jni\bin\build.prop

[propertyfile] Updating property file: I:\android\android-ndk-r7c\samples\hello-

jni\bin\build.prop

BUILD SUCCESSFUL

Total time: 5 seconds

从上面,可以看出,生成了HelloJni-debug.apk,那么使用adb命令安装到当前的虚拟机上就可以了.

运行adb install bin/HelloJni-debug.apk命令,如果出现:error: device not found,说明你的android模拟器尚未start.

运行后,出现如下提示:

185 KB/s (85934 bytes in 0.453s)

        pkg: /data/local/tmp/HelloJni-debug.apk

Success