如果您的活动内容太多并且显示非常长的ui,例如包含ListView或WebView,
如何在长图像中获取包含整个内容的屏幕截图?
答案 0 :(得分:1)
我认为此链接中的答案可以帮助您:
How to convert all content in a scrollview to a bitmap?
我在上面的链接中混合了两个答案,为您制作一段优化的代码:
private void takeScreenShot()
{
View u = ((Activity) mContext).findViewById(R.id.scroll);
HorizontalScrollView z = (HorizontalScrollView) ((Activity) mContext).findViewById(R.id.scroll);
int totalHeight = z.getChildAt(0).getHeight();
int totalWidth = z.getChildAt(0).getWidth();
Bitmap b = getBitmapFromView(u,totalHeight,totalWidth);
//Save bitmap
String extr = Environment.getExternalStorageDirectory()+"/Folder/";
String fileName = "report.jpg";
File myPath = new File(extr, fileName);
FileOutputStream fos = null;
try {
fos = new FileOutputStream(myPath);
b.compress(Bitmap.CompressFormat.JPEG, 100, fos);
fos.flush();
fos.close();
MediaStore.Images.Media.insertImage(mContext.getContentResolver(), b, "Screen", "screen");
}catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static Bitmap getBitmapFromView(View view, int totalHeight, int totalWidth) {
int height = Math.min(MAX_HEIGHT, totalHeight);
float percent = height / (float)totalHeight;
Bitmap canvasBitmap = Bitmap.createBitmap((int)(totalWidth*percent),(int)(totalHeight*percent), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(canvasBitmap);
Drawable bgDrawable = view.getBackground();
if (bgDrawable != null)
bgDrawable.draw(canvas);
else
canvas.drawColor(Color.WHITE);
canvas.save();
canvas.scale(percent, percent);
view.draw(canvas);
canvas.restore();
return canvasBitmap;
}
答案 1 :(得分:1)
尝试使用这个, 将您的视图传递给此功能,
public Bitmap getBitmapFromView(View view) {
// Define a bitmap with the same size as the view
Bitmap returnedBitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.RGB_565);
// Bind a canvas to it
Canvas canvas = new Canvas(returnedBitmap);
// Get the view's background
Drawable bgDrawable = view.getBackground();
if (bgDrawable != null)
// has background drawable, then draw it on the canvas
bgDrawable.draw(canvas);
else
// does not have background drawable, then draw white background on
// the canvas
canvas.drawColor(Color.WHITE);
// draw the view on the canvas
view.draw(canvas);
// return the bitmap
return returnedBitmap;
}
此函数将返回位图,您可以按照自己的方式使用它。
答案 2 :(得分:0)
您可以轻松地将布局转换为“位图图像”
protected Bitmap ConvertToBitmap(LinearLayout layout) {
layout.setDrawingCacheEnabled(true);
layout.buildDrawingCache();
Bitmap bitmap = layout.getDrawingCache();
return bitmap;
}