jView : how to ?

[tintinux]

Hi

To try to show a small image on an AndroidModule, I used jView like this :

Code: Pascal  [Select][+][-]

1. procedure TAndroidModule1.jView1Draw(Sender: TObject; Canvas: jCanvas);
2.  
3. var
4.   Bitmap : jBitmap;
5.  
6. begin
7.   LogDebug('TEST2_DEBUG', 'jView1Draw BEGIN' );
8.   Canvas.PaintColor:= colbrBlack;
9.   Canvas.PaintStrokeWidth:= 3;
10.   Canvas.drawLine(10,10,30,30);
11.   // nothing visible if exit here
12.   BitMap := jBitMap.Create(Self);
13.   try
14.     BitMap.LoadFromFile ('\Tablet\Download\Picture 3.png');
15.     Canvas.drawBitmap( BitMap, 0,0, 100, 1 );
16.   finally
17.     BitMap.free;
18.   end;
19.   // nothing visible if exit here
20.   LogDebug('TEST2_DEBUG', 'jView1Draw END' );
21. end;  

I have added a jCanvas and linked the jView to it.
There is no error, but nothing is shown.
What am I missing ?

Something else : if I set any other color than colbrDefault, to jview1.backgroundColor  using the property editor, the application stops during jView1Draw and the log shows :

Code: [Select]

D/TEST2_DEBUG(29059): jView1Draw BEGIN

F/libc    (29059): Fatal signal 11 (SIGSEGV), code 1, fault addr 0x550000 in tid 29059 (org.lamw.test2)
Thanks for help


PS : are they working examples of simple drawing with Android Bridges components ?

[jmpessoa]

---->>About jView and jCanvas use:

Yes, please try this "demos":

AppCameraDemo

and

AppDemo1 [see form/unit8.pas  and form/unit9.pas]


NOTE:

To use/test any demo App you will need:

1. configure the project ".lpi" to match your system... [NDK path ...]

2. configure "build.xml"  to match your system...  [SDK and target ...]
3. configure  "AndroidManifest.xml"  android:targetSdkVersion=??
   to match your  "build.xml"


4. Lazarus IDE --> Run --> "build"   [to produce the pascal jni ".so"]
5. Connect your Device-PC  via usb ...
6. Lazarus IDE --> Run --> "[Lamw] Build Android Apk and Run"



Thank you!

[tintinux]

Hi

Thanks for your reply.

Unfortunately, the AppCameraDemo found in trunk doesn't compile.

Code: Pascal  [Select][+][-]

1. unit1.pas(159,11) Error: identifier idents no member "Orientation"
2.  

After I comment out the code,  it compiles...   but crashes at startup.

In logcat, I extracted 577 lines of Fatal Error... and didn't found the reason... 

Code: Pascal  [Select][+][-]

1. F/art     (32151): art/runtime/check_jni.cc:65] JNI DETECTED ERROR IN APPLICATION: JNI CallIntMethod called with pending exception 'java.lang.NoSuchMethodError' thrown in void com.example.appcamerademo.Controls.pAppOnCreate(android.content.Context, android.widget.RelativeLayout):-2
2.  
3. F/art     (32151): art/runtime/check_jni.cc:65]     in call to CallIntMethod
4.  
5. F/art     (32151): art/runtime/check_jni.cc:65]     from void com.example.appcamerademo.Controls.pAppOnCreate(android.content.Context, android.widget.RelativeLayout)
6.  
7. F/art     (32151): art/runtime/check_jni.cc:65] "main" prio=5 tid=1 Runnable
8.  
9. ....
10.  
11.  

And if I look into the source, event jView1Draw, I don't find any difference with my code...
Sure I'm blind....

Best regards

[jmpessoa]

Hello!

About:

unit1.pas(159,11) Error: identifier idents no member "Orientation"

Sorry... the onRotate event changed the signature. Please,
empty  the   "onRotate" and  re-create it!

and put a jBitmap component on form! 

not  BitMap := jBitMap.Create(Self)  !!!

[tintinux]

Hi

The compilation error is in the OnJNIPrompt event procedure.

Emptying or recreating the OnRotate event procedure changes nothing, and same if emptying or re-creating OnJNIPrompt.

Best regards

[jmpessoa]

Please, zip e send me your project:

unit1.pas , unit1.lfm and controls.lpr

[tintinux]

Hi

As I said earlier it is AppCameraDemo found in LAMW trunk.

Regards

[jmpessoa]

Hello  tintinux!

OK. I am trying to fix the "AppCameraDemo"


EDITED:  Done!!!

[tintinux]

Hi

After update LAMW and reinstalling new revision of packages (including AppCameraDemo), I get this error :

Code: [Select]

Messages, Hints: 2
Note: Duplicate unit "controls" in "controls", orphaned ppu "C:\lamw\trunk\demos\Eclipse\AppCameraDemo\obj\controls\controls.o"
Note: Duplicate unit "controls" in "LCLBase 1.5", ppu="C:\lamw\laz4android\lcl\units\arm-android\controls.ppu", source="C:\lamw\laz4android\lcl\controls.pp"
Compile Project, OS: android, CPU: arm, Target: C:\lamw\trunk\demos\Eclipse\AppCameraDemo\libs\armeabi\libcontrols.so: Success, Hints: 7
unit1.pas(38,45) Hint: Parameter "Canvas" not used
unit1.pas(88,3) Note: Local variable "dir" not used
unit1.pas(32,30) Hint: Parameter "intentData" not used
unit1.pas(9,31) Hint: Unit "And_jni_Bridge" not used in unit1
unit1.pas(10,5) Hint: Unit "Laz_And_Controls_Events" not used in unit1
controls.lpr(1141,34) Hint: Parameter "reserved" not used
controls.lpr(1157,37) Hint: Parameter "reserved" not used
Building APK... : Exit code 1, Errors: 1
Buildfile: C:\lamw\trunk\demos\Eclipse\AppCameraDemo\build.xml

-set-mode-check:

-set-debug-files:

-check-env:
 [checkenv] Android SDK Tools Revision 24.4.1
 [checkenv] Installed at C:\lamw\android-sdk-windows

-setup:
     [echo] Project Name: AppCameraDemo
  [gettype] Project Type: Application

-set-debug-mode:

-debug-obfuscation-check:

-pre-build:

-build-setup:
[getbuildtools] Using latest Build Tools: 23.0.3
     [echo] Resolving Build Target for AppCameraDemo...
[gettarget] Project Target:   Android 4.2.2
[gettarget] API level:        17
     [echo] ----------
     [echo] Creating output directories if needed...
    [mkdir] Created dir: C:\lamw\trunk\demos\Eclipse\AppCameraDemo\bin\res
    [mkdir] Created dir: C:\lamw\trunk\demos\Eclipse\AppCameraDemo\bin\rsObj
    [mkdir] Created dir: C:\lamw\trunk\demos\Eclipse\AppCameraDemo\bin\rsLibs
    [mkdir] Created dir: C:\lamw\trunk\demos\Eclipse\AppCameraDemo\bin\classes
    [mkdir] Created dir: C:\lamw\trunk\demos\Eclipse\AppCameraDemo\bin\dexedLibs
     [echo] ----------
     [echo] Resolving Dependencies for AppCameraDemo...
[dependency] Library dependencies:
[dependency] No Libraries
[dependency]
[dependency] ------------------
     [echo] ----------
     [echo] Building Libraries with 'debug'...
   [subant] No sub-builds to iterate on

-code-gen:
[mergemanifest] Merging AndroidManifest files into one.
[mergemanifest] Manifest merger disabled. Using project manifest only.
     [echo] Handling aidl files...
     [aidl] No AIDL files to compile.
     [echo] ----------
     [echo] Handling RenderScript files...
     [echo] ----------
     [echo] Handling Resources...
     [aapt] Generating resource IDs...
     [echo] ----------
     [echo] Handling BuildConfig class...
[buildconfig] Generating BuildConfig class.

-pre-compile:

-compile:
    [javac] Compiling 4 source files to C:\lamw\trunk\demos\Eclipse\AppCameraDemo\bin\classes
    [javac] warning: [options] source value 1.5 is obsolete and will be removed in a future release
    [javac] warning: [options] target value 1.5 is obsolete and will be removed in a future release
    [javac] warning: [options] To suppress warnings about obsolete options, use -Xlint:-options.
    [javac] C:\lamw\trunk\demos\Eclipse\AppCameraDemo\src\com\example\appcamerademo\App.java:234: error: cannot find symbol
    [javac]         case KeyEvent.KEYCODE_BRIGHTNESS_DOWN:
    [javac]                      ^
    [javac]   symbol:   variable KEYCODE_BRIGHTNESS_DOWN
    [javac]   location: class KeyEvent
    [javac] C:\lamw\trunk\demos\Eclipse\AppCameraDemo\src\com\example\appcamerademo\App.java:238: error: cannot find symbol
    [javac]         case KeyEvent.KEYCODE_BRIGHTNESS_UP:
    [javac]                      ^
    [javac]   symbol:   variable KEYCODE_BRIGHTNESS_UP
    [javac]   location: class KeyEvent
    [javac] Note: C:\lamw\trunk\demos\Eclipse\AppCameraDemo\src\com\example\appcamerademo\Controls.java uses or overrides a deprecated API.
    [javac] Note: Recompile with -Xlint:deprecation for details.
    [javac] Note: C:\lamw\trunk\demos\Eclipse\AppCameraDemo\src\com\example\appcamerademo\Controls.java uses unchecked or unsafe operations.
    [javac] Note: Recompile with -Xlint:unchecked for details.
    [javac] 2 errors
    [javac] 3 warnings

BUILD FAILED
C:\lamw\android-sdk-windows\tools\ant\build.xml:716: The following error occurred while executing this line:
C:\lamw\android-sdk-windows\tools\ant\build.xml:730: Compile failed; see the compiler error output for details.

Total time: 5 seconds
Panic: tool stopped with exit code 1. Use context menu to get more information.
Exception, Errors: 1
Fatal: [Exception] Failed: Cannot build APK!
Thanks for help !

[jmpessoa]

Hi!

the errors are here:

C:\lamw\trunk\demos\Eclipse\AppCameraDemo\src\com\example\appcamerademo\App.java:234: error: cannot find symbol

    [javac]         case KeyEvent.KEYCODE_BRIGHTNESS_DOWN:
    [javac]                      ^
    [javac]   symbol:   variable KEYCODE_BRIGHTNESS_DOWN
    [javac]   location: class KeyEvent

C:\lamw\trunk\demos\Eclipse\AppCameraDemo\src\com\example\appcamerademo\App.java:238: error: cannot find symbol

    [javac]         case KeyEvent.KEYCODE_BRIGHTNESS_UP:
    [javac]                      ^
    [javac]   symbol:   variable KEYCODE_BRIGHTNESS_UP
    [javac]   location: class KeyEvent

1. you could be compiling with an old sdk ....

2.  You can go to "App.java"  [...\src\...] and comment  these lines:

      /*
        case KeyEvent.KEYCODE_BRIGHTNESS_DOWN:
            controls.jAppOnKeyDown(c,keyCode,KeyEvent.keyCodeToString(keyCode));
            return true;
           
        case KeyEvent.KEYCODE_BRIGHTNESS_UP:
            controls.jAppOnKeyDown(c,keyCode,KeyEvent.keyCodeToString(keyCode));
            return true;
      */

[tintinux]

Hi

Yes, I use an old version of SDK (and other libraries), as specified in the installation wiki

If a newer works, I will upgrade, and then update the wiki : which one have you installed ?

Could you check also the other tools against your installation ?

Thanks

[jmpessoa]

Hi!

    KeyEvent.KEYCODE_BRIGHTNESS_DOWN
    KeyEvent.KEYCODE_BRIGHTNESS_UP

Need android 4.3 [api 18]  ....

But go to Android 4.4 [api 19] !!!

[tintinux]

Hi jmpessoa !

Since you removed the java code to allow AppCameraDemo to work with API 17, I will upgrade later and save time...

In the latest svn version the button is hidden by the TextView, at least on small screens.

I have made small changes to fix this, and also to restore a good layout after 2 rotations (portrait -> landscape -> portrait). Modified sources are attached.

Best regards

[jmpessoa]

Ok. fixed!

Thank you!

[tintinux]

Hi

I can draw on the Canvas of a JView, but I'd like to save the drawing in memory to be able to restore it partially later.

With the Windows or Linux Lazarus components (TPaintBox, TBitMap,...) I can do this easily with something like :

Code: Pascal  [Select][+][-]

1.  // SourceBitMap and DestBitMap are 2 TBitMap instanciated and set to the same size
2. SourceBitMap.Canvas.Draw ( 0, 0, DestBitMap );

How is this possible with LAMW jView ?

I have read about the Java technique, it requires to create a new Bitmap object and set it to the View.  This doesn't look possible with Lazarus components, or I do not find how.

Thanks for help.

PS : I found nothing in AppCameraDemo about this