I want draw bmp file on my own soft-keyboard. Soft keyboard working
successully.
My Draw class:
public class Keyboard_Draw extends SurfaceView implements
SurfaceHolder.Callback {
public Keyboard_Thread mKeyb_Thread;private SurfaceHolder mHolder;private
static final String TAG = "Sample::Keyboard_Draw";
public Keyboard_Draw(Context context) {
super(context);
Log.i(TAG, "Initialize class");
try {
mHolder = getHolder();
mHolder.addCallback(this);
mKeyb_Thread = new Keyboard_Thread(getContext(), mHolder);
} catch (Exception e) {
Log.e(TAG, "Failed to initialize " + e);
}}
Keyboard_Thread - it's thread for drawing:
public class Keyboard_Thread extends Thread {...
public Keyboard_Thread(Context context, SurfaceHolder surfaceHolder) {...public
void draw() {
try {
Paint shadow = new Paint();
shadow.setColor(0xBBFF0000);
Bitmap bmp;
bmp = bitmap;
canvas = surfaceHolder.lockCanvas();
synchronized (surfaceHolder) {
if (canvas != null) {
Log.i(TAG, "drawing on Keyboard");
canvas.drawBitmap(bmp,left,top, shadow);
}
}
if (canvas != null) {
surfaceHolder.unlockCanvasAndPost(canvas);
}
bmp.recycle();
} catch (Exception e) {
Log.e(TAG, "Failed to draw. Exception thrown: "
+ e);
}
}
When i debugging, canvas already=null. What's wrong?
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