我想创建一个自定义适配器的Cover Flow（图片查看缩略图，文本查看标题，进度条表示了一定的进展..）。
所有的例子或Cover Flow功能部件的实现是基于画廊（巫支持图像的集合，只）。
是否有任何提示，想法，可以帮助我吗？
谢谢 ：）
Answer 1:
这是相当容易做到的; 您可以使用相同的适配器与例如列表视图。 扩展BaseAdapter ，使用ViewHolder模式，并在返回的膨胀视图
public View getView(int position, View convertView, ViewGroup parent) {
方法。 但是，你应该改变
transformImageBitmap(THIS child, Transformation t, int rotationAngle)
至
transformImageBitmap(View child, Transformation t, int rotationAngle)
在CoverFlow.java否则你会得到ClassCastExceptions 。
Answer 2:
您可以使用懒人适配器做到这一点。 你必须创建在图像加载器类的解码文件的反射图像。 接下来，你必须从你的自定义适配器类的getview方法返回一个图像视图。
下面是示例代码：
In main activity:
CoverFlow coverflow=(CoverFlow)findViewById(R.id.yourcoverflowid);
coverflow.setAdapter(new customadapter(getActivity(),list,imagesize));
In getview method of custom adapter:
ImageView i=new ImageView(activity);
imageLoader.DisplayImage(data.get(position).getimage(),i);
i.setPadding(0,5,0,0);
i.setLayoutParams(new CoverFlow.LayoutParams(width,height));
i.setScaleType(ImageView.ScaleType.MATRIX);
return i;
In decodefile method of imageloader class
尝试{最终诠释reflectionGap = 4;
Bitmap originalImage;
BitmapFactory.Options o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
FileInputStream stream1=new FileInputStream(f);
originalImage=BitmapFactory.decodeStream(stream1);
stream1.close();
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);
return bitmapWithReflection;
Answer 3:
如果你想从蜂窝比其所有可能的观点，您可以通过使用方法View.setRotationY（rotationangle）转动意见的CoverFlow。
Answer 4:
我使用的解决办法可能不是你所需要的。 然而，这是我能想出的......我把我想做的事情在LinearLayout ，然后将其转换为Bitmap ：
LayoutInflater inflater = (LayoutInflater) ClassifiedActivity.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
LinearLayout layout = (LinearLayout) inflater.inflate(R.layout.my_layout_as_imageview,
null);
layout.setBackgroundResource(R.drawable.stub);
layout.setDrawingCacheEnabled(true);
layout.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
layout.layout(0, 0, layout.getMeasuredWidth(), layout.getMeasuredHeight());
layout.buildDrawingCache(true);
Bitmap b = Bitmap.createBitmap(layout.getDrawingCache());
layout.setDrawingCacheEnabled(false); // clear drawing cache
ImageView iv= (ImageView) findViewById(R.id.imageView1);
iv.setImageBitmap(b);
我的布局XML看起来是这样的：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="@+id/textView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Medium Text" />
</LinearLayout>
这个答案对我的帮助转化LinearLayout为Bitmap 。
文章来源: Coverflow with custom adapter
