所以，我正在使用 https://github.com/harism/android_page_curl，这个项目实现了curl创建书的功能。但是我想在直接从网络流式传输图像时实现同样的效果，显然是以异步方式。
但后来我需要一个OpenGL , progress bar相同的。但是我没有任何知识OPENGL，所以我该如何调整这段代码并实现我想要的功能。
另外，看看这个问题，更清楚地了解我想要实现的目标......
package fi.harism.curl;
public class CurlActivity extends Activity {
private CurlView mCurlView;
Button btn;
private AQuery aq;
Drawable d =null;
TextView mText;
List<String> data;
MediaPlayer mPlayer;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
int index = 0;
if (getLastNonConfigurationInstance() != null) {
index = (Integer) getLastNonConfigurationInstance();
}
mCurlView = (CurlView) findViewById(R.id.curl);
mCurlView.setPageProvider(new PageProvider());
mCurlView.setSizeChangedObserver(new SizeChangedObserver());
mCurlView.setCurrentIndex(index);
mCurlView.setBackgroundColor(Color.GREEN);
}
@Override
public void onPause() {
super.onPause();
mCurlView.onPause();
}
@Override
public void onResume() {
super.onResume();
mCurlView.onResume();
}
@Override
public Object onRetainNonConfigurationInstance() {
return mCurlView.getCurrentIndex();
}
/**
* Bitmap provider.
*/
private class PageProvider implements CurlView.PageProvider {
private String[] mBitmapStrings={"http://myserver.com/image/img%20p1.png",
"http://myserver.com/image/img%20p2.png",
"http://myserver.com/image/img%20p3.png",
"http://myserver.com/image/img%20p4.png"};
@Override
public int getPageCount() {
return mBitmapStrings.length;
}
private Bitmap loadBitmap(int width, int height, int index) throws MalformedURLException, IOException {
Bitmap b = Bitmap.createBitmap(width, height,
Bitmap.Config.ARGB_8888);
b.eraseColor(0xFFFFFFFF);
Canvas c = new Canvas(b);
if(index==mBitmapStrings.length)
{
index=0;
}
Drawable d = new BitmapDrawable(drawable_from_url(mBitmapStrings[index]));
int margin = 7;
int border = 3;
Rect r = new Rect(margin, margin, width - margin, height - margin);
int imageWidth = r.width() - (border * 2);
int imageHeight = imageWidth * d.getIntrinsicHeight()
/ d.getIntrinsicWidth();
if (imageHeight > r.height() - (border * 2)) {
imageHeight = r.height() - (border * 2);
imageWidth = imageHeight * d.getIntrinsicWidth()
/ d.getIntrinsicHeight();
}
r.left += ((r.width() - imageWidth) / 2) - border;
r.right = r.left + imageWidth + border + border;
r.top += ((r.height() - imageHeight) / 2) - border;
r.bottom = r.top + imageHeight + border + border;
Paint p = new Paint();
p.setColor(0xFFC0C0C0);
c.drawRect(r, p);
r.left += border;
r.right -= border;
r.top += border;
r.bottom -= border;
d.setBounds(r);
d.draw(c);
return b;
}
@Override
public void updatePage(CurlPage page, int width, int height, int index) {
Bitmap front;
try {
front = loadBitmap(width, height, index);
page.setTexture(front, CurlPage.SIDE_FRONT);
page.setColor(Color.rgb(180, 180, 180), CurlPage.SIDE_BACK);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
/**
* CurlView size changed observer.
*/
private class SizeChangedObserver implements CurlView.SizeChangedObserver {
@Override
public void onSizeChanged(int w, int h) {
/*if (w > h) {
mCurlView.setViewMode(CurlView.SHOW_TWO_PAGES);
mCurlView.setMargins(.1f, .05f, .1f, .05f);
} else {*/
mCurlView.setViewMode(CurlView.SHOW_ONE_PAGE);
//mCurlView.setMargins(.1f, .1f, .1f, .1f);
mCurlView.setMargins(0,0,0,0);
//}
}
}
Bitmap drawable_from_url(String url) throws java.net.MalformedURLException, java.io.IOException {
Bitmap x;
HttpURLConnection connection = (HttpURLConnection)new URL(url) .openConnection();
connection.setRequestProperty("User-agent","Mozilla/4.0");
connection.connect();
InputStream input = connection.getInputStream();
x = BitmapFactory.decodeStream(input);
return x;
}
}
- - 编辑 - -
另外，我正在使用 android-query 库进行异步图像/文件加载。如果从网络上流式传输图像，是否可以将它与这个项目一起使用。如何？