我将html文件传递为“file:///android_asset/WebApplication/index.html”.如何在android中检查此文件是否存在.
解决方法:
您可以尝试打开流,如果它失败,文件就不存在,如果它没有失败,文件应该在那里:
/**
* Check if an asset exists. This will fail if the asset has a size < 1 byte.
* @param context
* @param path
* @return TRUE if the asset exists and FALSE otherwise
*/
public static boolean assetExists(Context context, String path) {
boolean bAssetok = false;
try {
InputStream stream = context.getAssets().open(ASSET_BASE_PATH + path);
stream.close();
bAssetok = true;
} catch (FileNotFoundException e) {
Log.w("IoUtilities", "assetExists Failed: "+e.toString());
} catch (IOException e) {
Log.w("IoUtilities", "assetExists Failed: "+e.toString());
}
return bAssetok;
}