I mean that there is nothing about the implementation of the gallery widget that requires it be in the framework. You can implement the exact same thing in your app, and make it behave however you want. You can start by copying the code from the framework (though this will probably require some tweaking to get it to use only SDK APIs).
On Mon, Sep 20, 2010 at 1:44 AM, Navaneeth <[email protected]> wrote: > 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 > > > > > -- > > > You received this message because you are subscribed to the Google > > > Groups "Android Developers" group. > > > To post to this group, send email to > [email protected] > > > To unsubscribe from this group, send email to > > > [email protected]<android-developers%[email protected]> > <android-developers%[email protected]<android-developers%[email protected]> > > > > > For more options, visit this group at > > >http://groups.google.com/group/android-developers?hl=en > > > > -- > > 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. > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected]<android-developers%[email protected]> > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- 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. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
