卷页从左到右的android
因此,我使用harism,https://github.com/harism/android_page_curl使用页面卷曲,并且已经成功实现了通过网络流式传输加载图像的功能。 但是,当我翻转回到之前的图像或页面时,由于图像没有以正确的索引进入,所以无法实现。 即他们没有适当的清爽。 我无法弄清楚这一点。
这是我将图片加载到PageProvider
private class PageProvider implements CurlView.PageProvider {
@Override
public int getPageCount() {
return data1.size()-1;
}
private Bitmap loadBitmap(int width, int height, final int index) throws MalformedURLException, IOException {
Bitmap b = Bitmap.createBitmap(width, height,Bitmap.Config.ARGB_8888);
b.eraseColor(0xFFFFFFFF);
Canvas c = new Canvas(b);
System.out.println("value of current page index "+mCurlView.getCurrentIndex()+" and index is "+index);
System.out.println("url forward");
aq.ajax(data1.get(index+1), Bitmap.class,0, new AjaxCallback<Bitmap>() {
@Override
public void callback(String url, Bitmap object, AjaxStatus status) {
if(object!=null)
try {
System.out.println("url image downloaded "+url);
y=object;
aq.ajax(data1.get(index).replace(".png", ".mp3"), File.class,0,new AjaxCallback<File>() {
@Override
public void callback(String url, File object, AjaxStatus status) {
System.out.println("url sound downloaded "+url);
try {
if(object!=null)
{
FileInputStream inputStream = new FileInputStream(object);
if(index>0)
{
mPlayer.stop();
mPlayer.reset();
}
prepareMediaPlayer(inputStream.getFD());
inputStream.close();
}
}
catch (Exception e) {}
}
});
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
d = new BitmapDrawable(getResources(),y);
if(y!=null)
{
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);
}
//}
if(y==null)
return null;
else
return b;
}
@Override
public void updatePage(CurlPage page, final int width, final int height, final int index) {
Bitmap front = null;
System.out.println("motion / index value /countIteration / size of map "+motionDirection+"/"+index+"/"+countIteration+"/"+imageFilexxSm.size());
try {
front=loadBitmap(width, height,index);
if(front!=null)
{
page.setTexture(front, CurlPage.SIDE_FRONT);
page.setColor(Color.rgb(180, 180, 180), CurlPage.SIDE_BACK);
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}}}
另外我试图使用CurlView类中提供的getCurrentIndex
方法设置索引,但它甚至不起作用。 已发现索引正确传递,但位图不会刷新。
更清楚的问题是:
当我向前移动即第1,2,3,4,5 ...时,图像和声音都能正常工作,但是当我做反向第5,第4,第3,第2,第1时,只有第5到第4个卷曲是正确的,但是,第三,第二和第一次出现故障。 这是为什么发生?
hm ... harism的curlpage具有加载图片时翻转页面的行为,例如,如果您将页面从0翻转为1,curlpage将为页面1和页面2加载图像,并且如果您翻转页面5,curlpage会加载图像对于第5页和第6页,但如果您翻回第4页,curlpage将为第4页,第3页和第2页加载图像。
当onTouch ACTION.MOVE
时触发loadImage()
,因此在移动/翻页之前必须准备好图像,否则页面将变为空,必须通过调用CurlView类中的updatePage()
方法手动加载。
对于getCurrentIndex()
您可以在CurlView类的startCurl()
和updatePage()
方法中检查它。
我希望如果使用具有harism页面卷曲的图像加载库,这将节省一些人的时间。
因此,大量的研究后,我发现,我用的是imageloading库(aquery)
得到了方法,即getCachedImage(String url)
getCachedFile(String url)
不上线工作,并返回null
,如果该文件是不已经缓存到任何存储(SD卡,缓存目录) 。
这段代码实际上是为我做的,
private class PageProvider implements CurlView.PageProvider {
@Override
public int getPageCount() {
return data1.size()-1;
}
private Bitmap loadBitmap(int width, int height, final int index) throws MalformedURLException, IOException {
Bitmap b = Bitmap.createBitmap(width, height,Bitmap.Config.ARGB_8888);
b.eraseColor(0xFFFFFFFF);
Canvas c = new Canvas(b);
System.out.println(" Index is : "+index+" Curl state : "+CurlActivity.motionDirection);
if(index==data1.size())
{
lastPage=false;
}
else
{
lastPage=true;
}
if(CurlActivity.motionDirection==11)
{
y=aq.getCachedImage(data1.get(index));
f=aq.getCachedFile(data1.get(index+1).replace(".png", ".mp3"));
if(f!=null)
{
FileInputStream inputStream = new FileInputStream(f);
if(index>0)
{
mPlayer.stop();
mPlayer.reset();
}
prepareMediaPlayer(inputStream.getFD());
inputStream.close();
}
}
else
{
y=aq.getCachedImage(data1.get(index));
if(jump==0)
{
f=aq.getCachedFile(data1.get(index).replace(".png", ".mp3"));
}
else
{
f=aq.getCachedFile(data1.get(index+1).replace(".png", ".mp3"));
}
if(y!=null&&f!=null)
{
FileInputStream inputStream = new FileInputStream(f);
if(index>0)
{
mPlayer.stop();
mPlayer.reset();
}
prepareMediaPlayer(inputStream.getFD());
inputStream.close();
}
else if(y!=null && f == null)
{
duration=1000;
}
else
{
aq.progress(R.id.progress).ajax(data1.get(index+1), Bitmap.class,0, new AjaxCallback<Bitmap>() {
@Override
public void callback(final String urlimg, final Bitmap object1, AjaxStatus status) {
if(object1!=null)
try {
y=object1;
aq.ajax(data1.get(index).replace(".png", ".mp3"), File.class,0,new AjaxCallback<File>() {
@Override
public void callback(String url, File object, AjaxStatus status) {
System.out.println("url sound downloaded "+url+status.getCode());
try {
if(object!=null||status.getCode()==404)
{
FileInputStream inputStream = new FileInputStream(object);
if(index>0)
{
mPlayer.stop();
mPlayer.reset();
}
prepareMediaPlayer(inputStream.getFD());
inputStream.close();
}
}
catch (Exception e) {}
}
});
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
}
d = new BitmapDrawable(getResources(),y);
if(y!=null)
{
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, final int width, final int height, final int index) {
mPlayer.stop();
mPlayer.reset();
Bitmap front = null;
try {
front=loadBitmap(width, height,index);
if(front!=null)
{
page.setTexture(front, CurlPage.SIDE_FRONT);
page.setColor(Color.rgb(180, 180, 180), CurlPage.SIDE_BACK);
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
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