String rasterPath = Environment.getExternalStorageDirectory().getPath() + "/raster/SM0803.tif";
FileRasterSource rasterSource=null;
try {
rasterSource = new FileRasterSource(rasterPath);
//rasterSource.project(mMapView.getSpatialReference());
// StretchParameters stretchParams = new StretchParameters.MinMaxStretchParameters();
// stretchParams.setGamma(2.0f);
//
// StretchRenderer renderer = new StretchRenderer();
// renderer.setStretchParameters(stretchParams);
// rasterLayer.setRenderer(renderer);
RasterLayer rasterLayer = new RasterLayer(rasterSource);
Envelope env = rasterLayer.getFullExtent();
double xmax=env.getXMax();
double xmin = env.getXMin();
double ymax = env.getYMax();
double ymin = env.getYMin();
mMapView.addLayer(rasterLayer);
Log.d(TAG, rasterSource.getFormat());
Log.d(TAG, String.valueOf(xmax)+","+String.valueOf(xmin)+","+String.valueOf(ymax)+","+String.valueOf(ymin));
} catch (IllegalArgumentException ie) {
Log.d(TAG, "null or empty path");
} catch (FileNotFoundException fe) {
Log.d(TAG, "raster file doesn't exist");
} catch (RuntimeException re) {
Log.d(TAG, "raster file can't be opened");
}rasterlayer cannot show! why?
