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copied!<p>Here is how i ended up doing it. I used the Content:// protocol and set up a contentprovider to handle returning a file descriptor to the system</p> <p>Here is my fileContentProvider:</p> <pre><code>import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import org.apache.commons.io.IOUtils; import android.content.ContentProvider; import android.content.ContentValues; import android.database.Cursor; import android.net.Uri; import android.os.ParcelFileDescriptor; import android.util.Log; public class FileContentProvider extends ContentProvider { @Override public ParcelFileDescriptor openFile(Uri uri, String mode) { Log.d("FileContentProvider","fetching: " + uri); ParcelFileDescriptor parcel = null; String fileNameRequested = uri.getLastPathSegment(); String[] name=fileNameRequested.split("\\."); String prefix=name[0]; String suffix=name[1]; // String path = getContext().getFilesDir().getAbsolutePath() + "/" + uri.getPath(); //String path=file:///android_asset/"+Consts.FILE_JAVASCRIPT+" /*check if this is a javascript file*/ if(suffix.equalsIgnoreCase("js")){ InputStream is = null; try { is = getContext().getAssets().open("www/"+Consts.FILE_JAVASCRIPT); } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } File file = stream2file(is,prefix,suffix); try { parcel = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY); } catch (FileNotFoundException e) { Log.e("FileContentProvider", "uri " + uri.toString(), e); } } return parcel; } /*converts an inputstream to a temp file*/ public File stream2file (InputStream in,String prefix,String suffix) { File tempFile = null; try { tempFile = File.createTempFile(prefix, suffix); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } tempFile.deleteOnExit(); FileOutputStream out = null; try { out = new FileOutputStream(tempFile); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } try { IOUtils.copy(in, out); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return tempFile; } @Override public boolean onCreate() { return true; } @Override public int delete(Uri uri, String s, String[] as) { throw new UnsupportedOperationException("Not supported by this provider"); } @Override public String getType(Uri uri) { throw new UnsupportedOperationException("Not supported by this provider"); } @Override public Uri insert(Uri uri, ContentValues contentvalues) { throw new UnsupportedOperationException("Not supported by this provider"); } @Override public Cursor query(Uri uri, String[] as, String s, String[] as1, String s1) { throw new UnsupportedOperationException("Not supported by this provider"); } @Override public int update(Uri uri, ContentValues contentvalues, String s, String[] as) { throw new UnsupportedOperationException("Not supported by this provider"); } } </code></pre> <p>in the manifest i defined the provider:</p> <pre><code><provider android:name="com.example.mypackage.FileContentProvider" android:authorities="com.example.fileprovider" /> </code></pre> <p>Here is the javascript o inject into the webview:</p> <pre><code>webView.loadUrl("javascript:(function() { " + "var script=document.createElement('script'); " + " script.setAttribute('type','text/javascript'); " + " script.setAttribute('src', 'content://com.example.fileprovider/myjavascriptfile.js'); " /* + " script.onload = function(){ " + " test(); " + " }; " */ + "document.body.appendChild(script); " + "})();"); </code></pre> <p>and here is the myjavascriptfile.js (as an example):</p> <pre><code> function changeBackground(color) { document.body.style.backgroundColor = color; </code></pre> <p>}</p>

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