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public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ProgressDialog pDialog = ProgressDialog
.show(this, "请稍等", "正在登录", false);
try {
Thread.sleep(3000); // wait(3000); }
} catch (InterruptedException e) {
} finally {
pDialog.dismiss();
}