AlertDialog显示时间
import java.text.SimpleDateFormat;import java.util.Date;import android.app.Activity;import android.app.AlertDialog;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class main extends Activity implements OnClickListener{ /** Called when the activity is first created. */ private Button btnshowDate; private Button btnshowTime; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); btnshowDate=(Button)findViewById(R.id.btnShowDate); btnshowTime=(Button)findViewById(R.id.btnShowTime); btnshowDate.setOnClickListener(this); btnshowTime.setOnClickListener(this); } @Override public void onClick(View v) { // TODO Auto-generated method stub switch(v.getId()){ case R.id.btnShowDate: { SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd"); showDialog("当前日期", sdf.format(new Date())); break; } case R.id.btnShowTime: { SimpleDateFormat sdf=new SimpleDateFormat("HH:mm；ss"); showDialog("当前时间", sdf.format(new Date())); break; } } }private void showDialog(String title,String msg){ AlertDialog.Builder builder=new AlertDialog.Builder(this); builder.setIcon(android.R.drawable.ic_dialog_info); builder.setTitle(title); builder.setMessage(msg); builder.setPositiveButton("确定", null); builder.create().show(); Intent intent;}}?