為什么打不開
import java.util.Calendar;
import android.app.Activity;
import android.os.Bundle;
import android.widget.DatePicker;
import android.widget.TimePicker;
public class MainActivity extends Activity {
private DatePicker datepicker;
private TimePicker timepicker;
private int year;
private int month;
private int day;
private int hour;
private int minute;
//獲取當(dāng)前時(shí)間的類
private Calendar cal;
? ? @Override
? ? protected void onCreate(Bundle savedInstanceState) {
? ? ? ? super.onCreate(savedInstanceState);
? ? ? ? setContentView(R.layout.main_activity);
? ? ? ? //獲取日歷的一個(gè)對(duì)象
? ? ? ? cal = Calendar.getInstance();
? ? ? ? year = cal.get(Calendar.YEAR);
? ? ? ? //月份從0月開始
? ? ? ? month = cal.get(Calendar.MONTH) +1;
? ? ? ? day = cal.get(Calendar.DAY_OF_MONTH);
? ? ? ? hour = cal.get(Calendar.HOUR_OF_DAY);
? ? ? ? minute = cal.get(Calendar.MINUTE);
? ? ? ? setTitle(year+month+day+hour+minute);
? ? }
}
是因?yàn)槟睦锊灰粯訂?,在手機(jī)上運(yùn)行,點(diǎn)開就閃一下就退了
2016-10-13
是你的代碼沒(méi)有和視圖用findViewById綁定
2016-08-19
問(wèn)題解決沒(méi)??
2015-07-18
初步估計(jì)是你setContentView(R.layout.main_activity);這里沒(méi)有改成main。還不行把你的報(bào)錯(cuò)信息貼出來(lái)
2015-07-14
?setTitle(year+"-"+month+"-"+day+"-"+hour+"-"+minute);,你setTitle里面這幾個(gè)變量都是Int,加起來(lái)還是int,setTile()里面應(yīng)該是String,肯定報(bào)錯(cuò)的