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POAndroid Cover flowview
 

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  1. POAndroid Cover flowview
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    <p>Hi i am developing application in Android.In that i am using the coverflow view for displaying the image.But the problem is its displaying on the center of screen.I need to display at the top of screen.Please help me i am new to Android.</p> <p>Code: My activity class</p> <pre><code> public class NewspaperCoverFlowActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Coverflow coverFlow; coverFlow = new Coverflow(this); coverFlow.setAdapter(new ImageAdapter(this)); ImageAdapter coverImageAdapter = new ImageAdapter(this); coverFlow.setAdapter(coverImageAdapter); coverFlow.setSpacing(2); coverFlow.setSelection(1, true); coverFlow.setAnimationDuration(1500); setContentView(coverFlow); } } Adapter Class: public class ImageAdapter extends BaseAdapter { int mGalleryItemBackground; private Context mContext; static final String URL="XXXXXXXXXXX"; String[] imageurl ; private FileInputStream fis; private Integer[] mImageIds = { R.drawable.ic_launcher, R.drawable.ic_launcher, R.drawable.ic_launcher, R.drawable.ic_launcher, R.drawable.ic_launcher }; private ImageView[] mImages; public ImageAdapter(Context c) { // System.out.println("Inside image cons"); mContext = c; getelement(); createReflectedImages(); // mImages = new ImageView[imageurl.length]; } public void getelement() { // System.out.println("Inside getelement"); // String[] itemsarray={}; // ArrayList&lt;HashMap&lt;String, String&gt;&gt; menuItems = new ArrayList&lt;HashMap&lt;String, String&gt;&gt;(); // ArrayList&lt;String&gt; menuItems = new ArrayList&lt;String&gt;(); TaplistingParser parser = new TaplistingParser(); String xml= parser.getXmlFromUrl(URL); Document doc=parser.getDomElement(xml); // System.out.println("sssss="+doc); NodeList nl=doc.getElementsByTagName("article"); imageurl = new String[nl.getLength()]; mImages = new ImageView[imageurl.length]; // System.out.println("len="+nl.getLength()); for(int i=0; i &lt; nl.getLength(); i++ ) { // System.out.println("Inside for"); // HashMap&lt;String, String&gt; map = new HashMap&lt;String, String&gt;(); Element e = (Element) nl.item(i); // map.put("SectionName", parser.getValue(e, "sectionname")); // System.out.println("b4 items="+parser.getValue(e, "sectionname")); // itemsarray[i] = parser.getValue(e, "sectionname"); // System.out.println("items="+itemsarray[i]); imageurl[i]=parser.getValue(e, "kickerimage"); // System.out.println("i am here..."+imageurl[i]); // menuItems.add(parser.getValue(e, "sectionname")); // menuItems.add(parser.getValue(e, "sectionname")); // System.out.println("menu="+menuItems); } // String[] itemsarray = menuItems.toArray(new String[menuItems.size()]); // String[] itemsarray = new String[menuItems.size()]; // itemsarray=menuItems.toArray(itemsarray); //// for(int j= 0;j &lt; itemsarray.length;j++ ) //// { //// Log.d("string is",(itemsarray[j])); //// } // return itemsarray; } public boolean createReflectedImages() { //The gap we want between the reflection and the original image final int reflectionGap = 4; int index = 0; // for (int imageId : imageurl) for(int i=0;i&lt;imageurl.length;i++) { // System.out.println("image="+imageurl[i]); // Bitmap originalImage = BitmapFactory.decodeResource(getResources(), // imageurl[i]); Bitmap originalImage = DownloadImage(imageurl[i]); int width = originalImage.getWidth(); int height = originalImage.getHeight(); //This will not scale but will flip on the Y axis Matrix matrix = new Matrix(); matrix.preScale(1, -1); //Create a Bitmap with the flip matrix applied to it. //We only want the bottom half of the image Bitmap reflectionImage = Bitmap.createBitmap(originalImage, 0, height/2, width, height/2, matrix, false); //Create a new bitmap with same width but taller to fit reflection Bitmap bitmapWithReflection = Bitmap.createBitmap(width , (height + height/2), Config.ARGB_8888); //Create a new Canvas with the bitmap that's big enough for //the image plus gap plus reflection Canvas canvas = new Canvas(bitmapWithReflection); //Draw in the original image canvas.drawBitmap(originalImage, 0, 0, null); //Draw in the gap Paint deafaultPaint = new Paint(); canvas.drawRect(0, height, width, height + reflectionGap, deafaultPaint); //Draw in the reflection canvas.drawBitmap(reflectionImage,0, height + reflectionGap, null); //Create a shader that is a linear gradient that covers the reflection Paint paint = new Paint(); LinearGradient shader = new LinearGradient(0, originalImage.getHeight(), 0, bitmapWithReflection.getHeight() + reflectionGap, 0x70ffffff, 0x00ffffff, TileMode.CLAMP); //Set the paint to use this shader (linear gradient) paint.setShader(shader); //Set the Transfer mode to be porter duff and destination in paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN)); //Draw a rectangle using the paint with our linear gradient canvas.drawRect(0, height, width, bitmapWithReflection.getHeight() + reflectionGap, paint); ImageView imageView = new ImageView(mContext); imageView.setImageBitmap(bitmapWithReflection); imageView.setLayoutParams(new Coverflow.LayoutParams(120,180)); imageView.setScaleType(ScaleType.MATRIX); mImages[index++] = imageView; } return true; } @Override public int getCount() { // TODO Auto-generated method stub return imageurl.length; } @Override public Object getItem(int position) { // TODO Auto-generated method stub return imageurl[position]; } @Override public long getItemId(int position) { // TODO Auto-generated method stub return position; } public View getView(int position, View convertView, ViewGroup parent) { //Use this code if you want to load from resources // DownloadImage(imageurl[position]); Bitmap bit = DownloadImage(imageurl[position]); ImageView i = new ImageView(mContext); i.setImageBitmap(bit); // i.setImageResource(imageurl[position]); i.setLayoutParams(new Coverflow.LayoutParams(170, 170)); i.setScaleType(ImageView.ScaleType.CENTER_INSIDE); //Make sure we set anti-aliasing otherwise we get jaggies BitmapDrawable drawable = (BitmapDrawable) i.getDrawable(); drawable.setAntiAlias(true); return i; //return mImages[position]; } /** Returns the size (0.0f to 1.0f) of the views * depending on the 'offset' to the center. */ public float getScale(boolean focused, int offset) { /* Formula: 1 / (2 ^ offset) */ return Math.max(0, 1.0f / (float)Math.pow(2, Math.abs(offset))); } Bitmap bitmap = null; private Bitmap DownloadImage(String URL) { // System.out.println("image inside="+URL); InputStream in = null; try { in = OpenHttpConnection(URL); bitmap = BitmapFactory.decodeStream(in); in.close(); } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } // System.out.println("image last"); return bitmap; } private InputStream OpenHttpConnection(String urlString) throws IOException { InputStream in = null; int response = -1; URL url = new URL(urlString); URLConnection conn = url.openConnection(); if (!(conn instanceof HttpURLConnection)) throw new IOException("Not an HTTP connection"); try{ HttpURLConnection httpConn = (HttpURLConnection) conn; httpConn.setAllowUserInteraction(false); httpConn.setInstanceFollowRedirects(true); httpConn.setRequestMethod("GET"); httpConn.connect(); response = httpConn.getResponseCode(); if (response == HttpURLConnection.HTTP_OK) { in = httpConn.getInputStream(); } } catch (Exception ex) { throw new IOException("Error connecting"); } return in; } } </code></pre> <p>Coverflow class:</p> <pre><code> public class Coverflow extends Gallery { private Camera mCamera = new Camera(); private int mMaxRotationAngle = 60; private int mMaxZoom = -120; private int mCoveflowCenter; public Coverflow(Context context) { super(context); this.setStaticTransformationsEnabled(true); } public Coverflow(Context context, AttributeSet attrs) { super(context, attrs); this.setStaticTransformationsEnabled(true); } public Coverflow(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); this.setStaticTransformationsEnabled(true); } public int getMaxRotationAngle() { return mMaxRotationAngle; } public void setMaxRotationAngle(int maxRotationAngle) { mMaxRotationAngle = maxRotationAngle; } public int getMaxZoom() { return mMaxZoom; } public void setMaxZoom(int maxZoom) { mMaxZoom = maxZoom; } private int getCenterOfCoverflow() { return (getWidth() - getPaddingLeft() - getPaddingRight()) / 2 + getPaddingLeft(); } private static int getCenterOfView(View view) { return view.getLeft() + view.getWidth() / 2; } protected boolean getChildStaticTransformation(View child, Transformation t) { final int childCenter = getCenterOfView(child); final int childWidth = child.getWidth() ; int rotationAngle = 0; t.clear(); t.setTransformationType(Transformation.TYPE_MATRIX); if (childCenter == mCoveflowCenter) { transformImageBitmap((ImageView) child, t, 0); } else { rotationAngle = (int) (((float) (mCoveflowCenter - childCenter)/ childWidth) * mMaxRotationAngle); if (Math.abs(rotationAngle) &gt; mMaxRotationAngle) { rotationAngle = (rotationAngle &lt; 0) ? -mMaxRotationAngle : mMaxRotationAngle; } transformImageBitmap((ImageView) child, t, rotationAngle); } return true; } protected void onSizeChanged(int w, int h, int oldw, int oldh) { mCoveflowCenter = getCenterOfCoverflow(); super.onSizeChanged(w, h, oldw, oldh); } private void transformImageBitmap(ImageView child, Transformation t, int rotationAngle) { mCamera.save(); final Matrix imageMatrix = t.getMatrix();; final int imageHeight = child.getLayoutParams().height;; final int imageWidth = child.getLayoutParams().width; final int rotation = Math.abs(rotationAngle); mCamera.translate(0.0f, 0.0f, 100.0f); //As the angle of the view gets less, zoom in if ( rotation &lt; mMaxRotationAngle ) { float zoomAmount = (float) (mMaxZoom + (rotation * 1.5)); mCamera.translate(0.0f, 0.0f, zoomAmount); } mCamera.rotateY(rotationAngle); mCamera.getMatrix(imageMatrix); imageMatrix.preTranslate(-(imageWidth/2), -(imageHeight/2)); imageMatrix.postTranslate((imageWidth/2), (imageHeight/2)); mCamera.restore(); } } </code></pre>
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    1. USuser1893896
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    1. COimageView.setLayoutParams(new Coverflow.LayoutParams(120,180)); try to change its values and then check
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      1. POAndroid Cover flowview
      1. USUsman Kurd
    2. COthanks Usman Kurd.I changed those value into(10,10).Now also it display in same position.Lightly changed in image that it.
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      1. POAndroid Cover flowview
      1. USuser1893896
    3. COTry the same with i.setLayoutParams(new Coverflow.LayoutParams(170, 170));
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      1. POAndroid Cover flowview
      1. USUsman Kurd
 

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