我正在创建一个时间跟踪应用程序,并希望有一个可以启动/暂停/重置的秒表。当我按下“结束日期并保存”按钮时,我希望应用程序在下面的TevtView中显示经过的小时/分钟/秒。它确实如此,但只有一秒钟,然后它就消失了。我哪里出错了?
我尝试创建一个仅用于更新 TextView 的新方法,但当时它根本不显示。如果有帮助,我必须用于此项目的最低SDK版本是23。
public void stopAndSaveChronometer(View v) {
if (running) {
chronometer.stop();
running = false;
time = SystemClock.elapsedRealtime() - chronometer.getBase();
h = (int) (time / 3600000);
m = (int) (time - h * 3600000) / 60000;
s = (int) (time - h * 3600000 - m * 60000) / 1000;
Intent secondsIntent = new Intent(this,
trackTodayActivity.class).putExtra("saved seconds", s);
startActivity(secondsIntent);
Intent minsIntent = new Intent(this,
trackTodayActivity.class).putExtra("saved mins", m);
startActivity(minsIntent);
Intent hoursIntent = new Intent(this,
trackTodayActivity.class).putExtra("saved hours", h);
startActivity(hoursIntent);
Bundle extras = getIntent().getExtras();
if (extras != null) {
seconds = extras.getInt("saved seconds", s);
minutes = extras.getInt("saved minutes", m);
hours = extras.getInt("saved hours", h);
}
// set up Strings to hold the times (already initialised as global variables)
printseconds = Integer.toString(s);
printminutes = Integer.toString(m);
printhours = Integer.toString(h);
// set up String to display in TextView (already initialised as global variable)
displayTheTime = (printhours + " hours, ")
+ (printminutes + " minutes, ")
+ (printseconds + " seconds");
// display the times in the Textview
showMyTime = (TextView) findViewById(R.id.printsavedTime);
showMyTime.setText(displayTheTime);
}
}
}
HUWWW
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