Note

1.Twitter Bootstrap Responsive Background-Image inside Div

background-size:100% auto;

2.Specify the painting area of the background or background only content

div { background-clip: content-box; }

3.NetworkOnMainThreadException:

if (android.os.Build.VERSION.SDK_INT >= 11) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}