package android.com.youtube; import android.app.Activity;import android.content.Intent;import android.net.Uri;import android.os.Bundle;import android.view.Window;import android.view.WindowManager; public class YoutubeActivity extends Activity?12    {      public void onCreate(Bundle savedInstanceState)?123456789101112131415161718    {                 super.onCreate(savedInstanceState);        setContentView(R.layout.main);        Uri uri = Uri.parse("http://www.cnblogs.com/chen-lhx/");        Intent it = new Intent(Intent.ACTION_VIEW, uri);        it.setData(uri);         it.setAction( Intent.ACTION_VIEW);         it.setClassName("com.android.browser","com.android.browser.BrowserActivity");         YoutubeActivity.this.startActivity(it);    }         public void onRestart(){         finish();         System.exit(0);    }  }