这是我在src中的.java文件:
package com.wao.texttime;
import java.util.Calendar;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class TextTime extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
TextView textView = (TextView) findViewById(R.id.TextView01);
Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(System.currentTimeMillis());
cal.set(Calendar.HOUR_OF_DAY, 6);
cal.set(Calendar.MINUTE, 15);
cal.set(Calendar.SECOND, 0);
long vask_1 = cal.getTimeInMillis();
cal.set(Calendar.HOUR_OF_DAY, 10);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
long vask_2 = cal.getTimeInMillis();
cal.set(Calendar.HOUR_OF_DAY, 14);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
long vask_3 = cal.getTimeInMillis();
cal.set(Calendar.HOUR_OF_DAY, 16);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
long vask_4 = cal.getTimeInMillis();
cal.set(Calendar.HOUR_OF_DAY, 19);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
long vask_5 = cal.getTimeInMillis();
long now = System.currentTimeMillis();
if(now > vask_1 && now < vask_2)
{
textView.setText("5");
}
else if(now > vask_2 && now < vask_3)
{
textView.setText("1");
}
else if(now > vask_3 && now < vask_4)
{
textView.setText("2");
}
else if(now > vask_4 && now < vask_5)
{
textView.setText("3");
}
}
}
我被告知我可以使用OnResume重新加载当前时间来更新TextView中的文本。但是,我不知道如何在文件中使用它。你有什么建议吗?
答案 0 :(得分:2)
在}
方法的结束onCreate
之后,添加以下内容:
@Override
protected void onResume(){
super.onResume();
// code to update the date here
}
您还必须在TextView
方法之外移动onCreate
的声明,或者至少您可能想要。为此,请在onCreate
方法之前添加如下所示的行:
private TextView textView;
然后在你的onCreate
中,你只需要这个:
textView = (TextView) findViewById(R.id.TextView01);
然后,您也可以通过textView
方法访问onResume
。
希望有所帮助。