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हाय मैं वर्तमान में परीक्षण हूँ एंड्रॉयड coverflow मैं यूआरएल से छवियों को मिलता है और coverflow में प्रदर्शित करने की कोशिश की मैं सफलतापूर्वक छवियों को डाउनलोड किया है, लेकिन में डाल सकते बिटमैप यहाँ कोड है जो मैं करने की कोशिश की ...coverflow एंड्रॉयड: कैसे coverflow में एक यूआरएल से छवियों को प्राप्त करने के लिए
package com.example.coverflow;
import java.io.FileInputStream;
import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.LinearGradient;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Shader.TileMode;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.Toast;
import android.widget.ImageView.ScaleType;
import com.example.coverflow.CoverAdapterView.OnItemClickListener;
public class CoverFlowExample 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);
coverImageAdapter.createReflectedImages();
coverFlow.setAdapter(coverImageAdapter);
coverFlow.setSpacing(-15);
coverFlow.setSelection(8, true);
setContentView(coverFlow);
coverFlow.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(CoverAdapterView<?> parent, View view,
int position, long id) {
// TODO Auto-generated method stub
Log.v("possition ", " this position :"+position);
Toast.makeText(getApplicationContext(), "position "+position, Toast.LENGTH_SHORT).show();
}
});
// Use this if you want to use XML layout file
// setContentView(R.layout.main);
// coverFlow = (CoverFlow) findViewById(R.id.coverflow);
}
public class ImageAdapter extends BaseAdapter {
int mGalleryItemBackground;
private Context mContext;
private FileInputStream fis;
//public Integer[] mImageIds ;
private Integer[] mImageIds ={1,2,3,4,5};
/*private Integer[] mImageIds = { R.drawable.kasabian_kasabian,
R.drawable.killers_day_and_age, R.drawable.garbage_bleed_like_me,
R.drawable.death_cub_for_cutie_the_photo_album,
R.drawable.kasabian_kasabian, R.drawable.kasabian_kasabian,
R.drawable.killers_day_and_age,
R.drawable.garbage_bleed_like_me,
R.drawable.massive_attack_collected,
R.drawable.kasabian_kasabian, R.drawable.kasabian_kasabian,
R.drawable.kasabian_kasabian
};*/
public int getCount2()
{
for(int i=0;i<5;i++)
{
ImageView imageView = new ImageView(mContext);
URL url;
try {
url = new URL("http://www.psdgraphics.com/file/retro-tv-icon.jpg");
Bitmap bmp = BitmapFactory.decodeStream(url.openConnection().getInputStream());
imageView.setImageBitmap(bmp);
imageView.setId(i);
//mImageIds[i]=i;
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return mImageIds.length;
}
private ImageView[] mImages;
public ImageAdapter(Context c) {
mContext = c;
mImages = new ImageView[getCount2()];
}
public boolean createReflectedImages() {
// The gap we want between the reflection and the original image
final int reflectionGap = 4;
int index = 0;
for (final int imageId : mImageIds) {
// Bitmap originalImage = BitmapFactory.decodeResource(
// getResources(), imageId);
URL url;
Bitmap originalImage= null;
try {
url = new URL("http://image10.bizrate-images.com/resize?sq=60&uid=2216744464");
originalImage = BitmapFactory.decodeStream(url.openConnection().getInputStream());
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
int width = originalImage.getWidth();
int height = originalImage.getHeight();
Log.v("width:",""+width+","+height);
// This will not scale but will flip on the Y axis
Matrix matrix = new Matrix();
matrix.preScale(1, -1);
Log.v("errer her", "aftr originalImage");
// 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);
Log.v("errer her", "aftr reflectionImage");
// 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);
Log.v("errer her", "aftr drawrect");
ImageView imageView = new ImageView(mContext);
imageView.setImageBitmap(bitmapWithReflection);
imageView.setLayoutParams(new CoverFlow.LayoutParams(120, 180));
imageView.setScaleType(ScaleType.MATRIX);
mImages[index++] = imageView;
}
return true;
}
public int getCount() {
// Log.v("getCoutn(int count)", "" + mImageIds.length);
return mImageIds.length;
}
public Object getItem(int position) {
// Log.v("getItem(int position)", "" + position);
return position;
}
public long getItemId(int position) {
// Log.v("getItemID(int position)", "" + position);
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
// Use this code if you want to load from resources
// ImageView i = new ImageView(mContext);
// i.setImageResource(mImageIds[position]);
// i.setLayoutParams(new CoverFlow.LayoutParams(130, 130));
// i.setScaleType(ImageView.ScaleType.MATRIX);
// return i;
// Log.v("getview int position mImages", ""+position);
ImageView imageView = new ImageView(mContext);
URL url;
try {
url = new URL("http://image10.bizrate-images.com/resize?sq=60&uid=2216744464");
Bitmap bmp = BitmapFactory.decodeStream(url.openConnection().getInputStream());
imageView.setImageBitmap(bmp);
imageView.setId(position);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return imageView;
//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) */
Log.v("getScale float ", " " + focused + " " + offset);
return Math.max(0, 1.0f/(float) Math.pow(2, Math.abs(offset)));
}
// View v=getView(position, convertView, parent);
}
}
आपको 'getView' में छवि को डीकोड नहीं करना चाहिए या फिर इसे कैश करना चाहिए। – Blundell
कोई भी पुनर्नवीनीकरण? लेकिन मेरी परियोजना में जो ठीक काम कर रहा है ... कृपया मुझे सुझाव दें –
आप स्मृति त्रुटि से बाहर निकल सकते हैं, और यह आइटम की एक बड़ी सूची पर भी लग सकता है – Blundell