保留android进度条或恢复进度条
保留android进度条或恢复进度条
提问于 2020-02-28 19:44:18
我想知道如何保持进度条的状态或从它停止的地方继续。让我解释一下，这是一个有进度条的计时器，当用户关闭活动或关闭活动时，计时器作为后台服务启动(计时器正常工作)，我希望当用户关闭活动或应用程序时，当他返回时，进度条将恢复到原来的位置。现在发生的情况是，当它返回到计时器时，进度条返回到零。下面是我的适配器代码，课程和计时器服务在这里发生
这是我保存进度条状态的方法
private static SharedPreferences.Editor pref;
private static int saveProgressBarState;
private static SharedPreferences getProgressBarState;
private CountDownTimer countDown(final long time, final ProgressBar lessonProgress, long originalTimerSize) {
final int timerLengthInSecond = (int) time / 1_000;
lessonProgress.setMax((int) originalTimerSize / 1_000);
return new CountDownTimer(time, 1000) {
@Override
public void onTick(long l) {
long secondRemaining = l / 1_000;
lessonProgress.setProgress((int) (timerLengthInSecond - secondRemaining));
//Getting progress of progress bar
saveProgressBarState = lessonProgress.getProgress();
}
@Override
public void onFinish() {
lessonProgress.setProgress(timerLengthInSecond);
}
};
}
//this method is called when onPause() is called on the activity
public static void runLessonTimerInBackground(Context context) {
pref = context.getSharedPreferences("LESSONPROGRESS", MODE_PRIVATE).edit();
pref.putInt("savedprogress", progressBarStateSave);
pref.apply();
}我希望获得保存的进度continue并恢复进度，然后继续进度
回答 1
Stack Overflow用户
回答已采纳
发布于 2020-02-28 20:56:21
您需要在您的onResume()中添加这些链接，我假设您可以在lesson的实际进度中调整并应用这些链接。
int lastProgress = pref.getInt("savedprogress", 0); //0 is default value
lessonProgress.setProgress(lastProgress); //this will set the progress
//here you might also need to do some other stuff related to your code and req
//you can also resume your lesson video from here, etc.如果你想在sharePref中保存多个课程进度，我建议你像这样保存进度
String progressPrefName = "savedProgress_" + lessonID; //here lessonID is lesson's unique ID
pref.putInt(progressPrefName, progressBarStateSave); // here pass the name which can be "savedProgress_1" referring to lesson with ID 1然后你就可以像这样得到它
String progressPrefName = "savedProgress_" + lessonID;
int lastProgress = pref.getInt(progressPrefName, 0); //0 is default value
lessonProgress.setProgress(lastProgress); //this will set the progress页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/60451046
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