设置界面的显示时间

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
new Handler().postDelayed(new Runnable() {

@Override
public void run() {
Intent mainIntent = new Intent(MainActivity.this,
ShowActivity.class);
startActivity(mainIntent);
finish();
}
}, 2000);

}