#Region Project Attributes
#ApplicationLabel: B4A Example
#VersionCode: 1
#VersionName:
'SupportedOrientations possible values: unspecified, landscape or portrait.
#SupportedOrientations: unspecified
#CanInstallToExternalStorage: False
#End Region
#Region Activity Attributes
#FullScreen: False
#IncludeTitle: True
#End Region
Sub Process_Globals
'These global variables will be declared once when the application starts.
'These variables can be accessed from all modules.
End Sub
Sub Globals
'These global variables will be redeclared each time the activity is created.
'These variables can only be accessed from this module.
Private NativeMe As JavaObject
End Sub
Sub Activity_Create(FirstTime As Boolean)
'Do not forget to load the layout file created with the visual designer. For example:
'Activity.LoadLayout("Layout1")
If FirstTime Then
NativeMe.InitializeContext
End If
Dim bmp As Bitmap
bmp.InitializeMutable(100, 100)
Dim arrData() As Byte
arrData = NativeMe.RunMethod("getBytesFromBitMap", Array As Object(bmp, 1))
Log(arrData.Length)
End Sub
Sub Activity_Resume
End Sub
Sub Activity_Pause (UserClosed As Boolean)
End Sub
#If Java
import android.graphics.Bitmap;
public static byte[] getBytesFromBitMap(Bitmap bitmap, int mode) {
int width = bitmap.getWidth();
int height = bitmap.getHeight();
int[] pixels = new int[width*height];
if(mode == 0 || mode == 1){
byte[] res = new byte[width*height/8 + 5*height/8];
bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
for(int i = 0; i < height/8; i++){
res[0 + i*(width+5)] = 0x1b;
res[1 + i*(width+5)] = 0x2a;
res[2 + i*(width+5)] = (byte) mode;
res[3 + i*(width+5)] = (byte) (width%256);
res[4 + i*(width+5)] = (byte) (width/256);
for(int j = 0; j < width; j++){
byte gray = 0;
for(int m = 0; m < 8; m++){
int clr = pixels[j + width*(i*8+m)];
int red = (clr & 0x00ff0000) >> 16;
int green = (clr & 0x0000ff00) >> 8;
int blue = clr & 0x000000ff;
gray = (byte) ((RGB2Gray(red, green, blue)<<(7-m))|gray);
}
res[5 + j + i*(width+5)] = gray;
}
}
return res;
}else if(mode == 32 || mode == 33){
byte[] res = new byte[width*height/8 + 5*height/24];
bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
for(int i = 0; i < height/24; i++){
res[0 + i*(width*3+5)] = 0x1b;
res[1 + i*(width*3+5)] = 0x2a;
res[2 + i*(width*3+5)] = (byte) mode;
res[3 + i*(width*3+5)] = (byte) (width%256);
res[4 + i*(width*3+5)] = (byte) (width/256);
for(int j = 0; j < width; j++){
for(int n = 0; n < 3; n++){
byte gray = 0;
for(int m = 0; m < 8; m++){
int clr = pixels[j + width*(i*24 + m + n*8)];
int red = (clr & 0x00ff0000) >> 16;
int green = (clr & 0x0000ff00) >> 8;
int blue = clr & 0x000000ff;
gray = (byte) ((RGB2Gray(red, green, blue)<<(7-m))|gray);
}
res[5 + j*3 + i*(width*3+5) + n] = gray;
}
}
}
return res;
}else{
return new byte[]{0x0A};
}
}
private static byte RGB2Gray(int r, int g, int b) {
return (false ? ((int) (0.29900 * r + 0.58700 * g + 0.11400 * b) > 200)
: ((int) (0.29900 * r + 0.58700 * g + 0.11400 * b) < 200)) ? (byte) 1 : (byte) 0;
}
#End If
