Android coding software interface

[Java] package cn. itcast. code; import android. app. activity; import android. OS. bundle; import android. view. viewGroup; import android. widget. linearLayout; import android. widget. textView; public class MainActivity extends Activity {/** Called when the activity is first created. * // @ Override public void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); LinearLayout linearLayout = new LinearLayout (this); LinearLayout. layoutParams layoutParams = new LinearLayout. layoutParams (ViewGroup. layoutParams. FILL_PARENT, ViewGroup. layoutParams. FILL_PARENT); TextView textView = new TextView (this); textView. setText (R. string. hello); textView. setId (34); LinearLayout. layoutParams textParams = new LinearLayout. layoutParams (ViewGroup. layoutParams. FILL_PARENT, ViewGroup. layoutParams. WRAP_CONTENT); linearLayout. addView (textView, textParams); setContentView (linearLayout, layoutParams );}}