これで確認
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.webkit.WebView;
public class StackOverFlowActivity extends Activity {
private Handler mHandler = new Handler();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
WebView view=(WebView)findViewById(R.id.webView1);
view.getSettings().setJavaScriptEnabled(true);
view.loadUrl("file:///android_asset/index.html");
view.addJavascriptInterface(new MyJavaScriptInterface(), "Android");
}
final class MyJavaScriptInterface
{
public void ProcessJavaScript(final String scriptname, final String args)
{
mHandler.post(new Runnable()
{
public void run()
{
String url="file:///android_asset/img.jpg";
webview.loadUrl("javascript:image(\""+url+"\")");
}
});
}
}
}
詳細については、Android webview に画像を追加しようとしています