Windows 7 OS, how to debug NDK Hello-jni sample Program



2. first, it needs to be clear that there is no need CygWin .

3. in the ADT installed in NDK Plugins

   Help | Install New software ... menu, and then from http://dl-ssl.google.com/android/eclipse/ installation androidnative Development Tools .

5. < P style= "Color:rgb (0,0,0); font-family: ' Calibri ', ' Sans-serif '; font-size:11pt; Font-style:normal; Font-weight:normal; margin-top:0in; Margin-bottom:0pt "> Then, window | Preferences menu, confirm android Below is a option

7. < P style= "Color:rgb (0,0,0); font-family: ' Calibri ', ' Sans-serif '; font-size:11pt; Font-style:normal; Font-weight:normal; margin-top:0in; Margin-bottom:0pt "> c/c++ | Build | Environment "Ndk_debug" Span lang= "ZH-CN" style= "Font-family:simsun" "Environment variable and set its value to 1

9. < P style= "Color:rgb (0,0,0); font-family: ' Calibri ', ' Sans-serif '; font-size:11pt; Font-style:normal; Font-weight:normal; margin-top:0in; Margin-bottom:0pt ">eclipse import come in hello JNI Sample

10. then, right-click Hello JNI Project , Android Tools > addnative Support, then, accept the default Hello-jni Library .

11. Eclipse will report " Method Newstringutf () could not being resolved "error. Please refer to http://stackoverflow.com/questions/15899813/eclipse-method-newstringutf-could-not-be-resolved to eliminate it.

    go to the project ' s Properties, C + + general Code Analysis.click," Use Project Settings " radio button (or "Configureworkspace Settings ..." button). Disable (uncheck) the "Method Cannotbe resolved" checkbox. Click "Apply," "OK." Then Foryour project, refresh, clean, refresh, build.

13. < P style= "Color:rgb (0,0,0); font-family: ' Calibri ', ' Sans-serif '; font-size:11pt; Font-style:normal; Font-weight:normal; margin-top:0in; Margin-bottom:0pt "> run | Debug as androidapplication hello JNI App

15. start a command-line window and go to Hello JNI directory. Then, run the "ndk-gdb--start--verbose" command.

16. Then , set breakpoints in gdb and run other debug commands

    (gdb) b hello-jni.c:62

    No symbol table is loaded. Use the "file" command.

    Breakpoint 1 (hello-jni.c:62) pending.

    (GDB) C

    Continuing.

    Exception in thread Thread-3:

    Traceback (most recent Calllast):

    File "C:\Python34\lib\threading.py", line 920, In_bootstrap_inner

    Self.run ()

    File "C:\Python34\lib\threading.py", line 868, in run

    self._target (*self._args, **self._kwargs)

    File "C:\Users\Qingxu_Li\AppData\Local\Android\android-ndk-r10d\ndk-gdb.py", L

    Ine 353, in Async_stderr

    output_fn (line.replace (' \ R ', '). replace (' \ n ', ') ')

    typeerror:expected Bytes,bytearray or Buffer compatible object

    Breakpoint 1,java_com_example_hellojni_hellojni_stringfromjni (

    env=0x41c77e00, thiz=0xd2e00019) atjni/hello-jni.c:62

    *env->newstringutf (env, "Hello from JNI! ) Compiled with AB

    I "ABI". ");

    (GDB) bt

    #0 java_com_example_hellojni_hellojni_stringfromjni (env=0x41c77e00,

    thiz=0xd2e00019) at jni/hello-jni.c:62

    #1 0x40b81550 in?? ()

    #2 0x40b81550 in?? ()

    BackTrace Stopped:previousframe identical to this frame (corrupt stack?)

    (GDB) frame

    #0 java_com_example_hellojni_hellojni_stringfromjni (env=0x41c77e00,

    thiz=0xd2e00019) at jni/hello-jni.c:62

    *env->newstringutf (env, "Hello from JNI! ) Compiled with AB

    I "ABI". ");

    (GDB)

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Windows 7 OS, how to debug NDK Hello-jni sample Program