Thanks Dianne,
But i dint understand what you meant by this :
"but it is entirely implementable with the SDK.". Could you please
explain.
I also want to know whether the approach i am following is correct one
or is there a better approach.
So far i have tried to draw a curved line and was able to place some
text(not TextViews) along the path at specific intervals.
I was also able to place a drawable on the center Text.
The things to be implemented are :
a) Give click property to every text along the path
b) update the list of text with the new list on UP or DOWN key press.
The problem i am facing right now is :
a) the onDraw is getting called in an infinte loop. (I tried to set a
flag but then it is drawing and in the next instant the screen gets
cleared)
b) i am not getting the onKey functionalities.
Please find my code below :
package com.android.mygallery;
import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.PathMeasure;
import android.graphics.PixelFormat;
import android.graphics.PointF;
import android.graphics.RectF;
import android.graphics.Matrix.ScaleToFit;
import android.graphics.Paint.Style;
import android.graphics.Path.Direction;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.view.View.OnKeyListener;
import android.widget.Gallery;
import android.widget.ImageView.ScaleType;
public class MyCurvedGallery extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
getWindow().setFormat(PixelFormat.TRANSPARENT);
myView view = new myView(this);
view.requestLayout();
setContentView(view);
}
class myView extends View implements OnKeyListener{
private Paint myPaint;
boolean completeFlag = false;
public myView(Context context) {
super(context);
myPaint = new Paint();
myPaint.setAntiAlias(true);
myPaint.setStyle(Style.STROKE);
myPaint.setStrokeWidth(2);
myPaint.setColor(Color.WHITE);
myPaint.setTextSize(30);
this.setOnKeyListener(this);
}
protected void onDraw(Canvas canvas) {
canvas.drawColor(Color.BLACK);
PointF mPoint1 = new PointF(600, 30);
PointF mPoint2 = new PointF(2500, 700);
PointF mPoint3 = new PointF(300, 1070);
Path myPath = new Path();
Path myPath2 = new Path();
Matrix m = new Matrix();
myPath = buildPath(mPoint1, mPoint2);
myPath2 = buildPath(mPoint2, mPoint3);
myPath2.addPath(myPath);
Bitmap myBitmap =
BitmapFactory.decodeResource(this.getResources(),
R.drawable.selector3);
int width = myBitmap.getWidth();
int height = myBitmap.getHeight();
int newWidth = 350;
int newHeight = 200;
float scaleWidth = ((float) newWidth) / width;
float scaleHeight = ((float) newHeight) / height;
m.postScale(scaleWidth, scaleHeight);
m.postRotate(51);
Bitmap resizedBitmap = Bitmap.createBitmap(myBitmap, 0,
0, width,
height, m, true);
// if(completeFlag == false)
drawBitmapAlongPath(myPath2, resizedBitmap,
canvas, m);
invalidate();
}
private Path buildPath(PointF mPointa, PointF mPointb) {
Path myPath = new Path();
myPath.moveTo(1300, 30);
myPath.quadTo(mPointa.x, mPointa.y, mPointb.x,
mPointb.y);
return myPath;
}
void drawBitmapAlongPath(Path myPath, Bitmap myBitmap, Canvas
canvas,
Matrix m) {
PathMeasure meas = new PathMeasure(myPath, false);
final int length = (int) meas.getLength();
final int advance = 250;
int distance = 0;
final int flags = PathMeasure.POSITION_MATRIX_FLAG
| PathMeasure.TANGENT_MATRIX_FLAG;
int i = 1;
while (distance < length) {
meas.getMatrix(distance, m, flags);
float myMatrixArray[] = new float[9];
m.getValues(myMatrixArray);
if (4 == i) {
float [] myArray =
{0.5f,0.5f,myMatrixArray[2]-100,-0.5f,
0.5f,myMatrixArray[5]-10,0,0,1};
Matrix src = new Matrix();
src.setValues(myArray);
m.set(src);
canvas.drawBitmap(myBitmap, m, myPaint);
}
canvas.drawText("Position - " + i++,
myMatrixArray[2],
myMatrixArray[5], myPaint);
distance += advance;
}
completeFlag = true;
}
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
System.out.println("MyCurvedGallery.onKey()");
switch (keyCode) {
case KeyEvent.ACTION_UP:
System.out.println("MyCurvedGallery.onKey().ACTION_UP");
break;
case KeyEvent.ACTION_DOWN:
System.out.println("MyCurvedGallery.onKey().ACTION_DOWN");
break;
default:
break;
}
return false;
}
}
}
Please help.
Thanks & Regards,
Sen
On Sep 20, 1:11 am, Dianne Hackborn <[email protected]> wrote:
> I'd suggest taking the platform's code for the gallery and modifying it to
> do what you want. You'll need to tweak some things to be able to build it
> against the SDK, but it is entirely implementable with the SDK.
>
>
>
> On Sun, Sep 19, 2010 at 8:03 AM, Navaneeth <[email protected]> wrote:
> > Hi All,
> > Is it possible to change the default arrangement of the Android
> > Gallery? What i meant is can we make the Gallery in a curved path,
> > where the images will be along the curved path and the same time it
> > has all the properties of the Android gallery(which appears to be
> > center locked and horizontal right now..)?
>
> > If possible, please tell me your ideas. All ideas are welcome.
>
> > Thanks & Regards,
> > Sen
>
> > --
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> > To unsubscribe from this group, send email to
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>
> --
> Dianne Hackborn
> Android framework engineer
> [email protected]
>
> Note: please don't send private questions to me, as I don't have time to
> provide private support, and so won't reply to such e-mails. All such
> questions should be posted on public forums, where I and others can see and
> answer them.
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