如何截取当前 MapView 的屏幕截图？

Question

我有两个按钮和一个 mapView。当我按下其中一个按钮时，我想保存 MapView 的视图。

任何人都知道我该如何做到这一点？

Answer 1

您必须向按钮添加一个侦听器（您应该知道这是如何完成的）并在该侦听器中执行以下操作：

boolean enabled = mMapView.isDrawingCacheEnabled();
mMapView.setDrawingCacheEnabled(true);
Bitmap bm = mMapView.getDrawingCache();

/* now you've got the bitmap - go save it */

File path = Environment.getExternalStorageDirectory();
path = new File(path, "Pictures");
path.mkdirs();  // make sure the Pictures folder exists.
File file = new File(path, "filename.png");
BufferedOutputStream outStream = new BufferedOutputStream(new FileOutputStream(file));
boolean success = bm.compress(CompressFormat.PNG, 100, outStream);
outStream.flush();
outStream.close();

mMapView.setDrawingCacheEnabled(enabled);   // reset to original value

为了让图像立即显示在图库中，您必须像这样通知 MediaScanner 新图像：

if (success) {
    MediaScannerClientProxy client = new MediaScannerClientProxy(file.getAbsolutePath(), "image/png");
    MediaScannerConnection msc = new MediaScannerConnection(this, client);
    client.mConnection = msc;
    msc.connect();
}