Question

我有一个活动并且有进度条的计时器初始启动，并且该活动中有一个广播接收器，如果网络被禁用，它将检测网络状态变化。我想停止计时器和进度条，当再次启用网络时，我想从计时器和进度条停止的地方恢复。我怎么能这样做，请告诉。

代码： -

private final BroadcastReceiver m_InternetChecker = new BroadcastReceiver() {/*Receiver to check Network state*/
    @Override
    public void onReceive(Context context, Intent intent) {

        init();

    }
};

@SuppressWarnings("deprecation")
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.otp_auto_verified);
    /*Registering Broadcast receiver*/
    IntentFilter m_internetFilter = new IntentFilter();// creating object of Intentfilter class user for defining permission
    m_internetFilter.addAction("android.net.conn.CONNECTIVITY_CHANGE");// action to check Internet connection
    getApplicationContext().registerReceiver(m_InternetChecker, m_internetFilter);// register receiver....

}
@SuppressLint("SetTextI18n")
private void init() {// initialize view controls
    if (NetworkUtil.isConnected(getApplicationContext())) {
        m_AlertDialog.dismiss();
        //Initialize a new CountDownTimer instance
        long m_MillisInFuture = 30000;// timer value
        long m_CountDownInterval = 1000;// timer break up
        m_oTimer = new CountDownTimer(m_MillisInFuture, m_CountDownInterval) {
            public void onTick(long millisUntilFinished) {
                millis = millisUntilFinished;
                @SuppressLint("DefaultLocale") String hms = String.format("%02d:%02d", TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished),
                        TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) -
                                TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished)));
                System.out.println(hms);
                tv.setText(hms);
                //Another one second passed
                //Each second ProgressBar progress counter added one

                m_n_ProgressStatus += 1;
                m_timerProgress.setProgress(m_n_ProgressStatus);
            }

            public void onFinish() {// when timer finished
            /*This is new change ....check if app is in backround or foreground*/
            /*if app is in background*/
                if (NetworkUtil.isAppIsInBackground(getApplicationContext())) {
                    System.out.println("In Background");
                    Intent i = new Intent(COtpAutoVerificationScreen.this, COtpManualVerificationScreen.class);
                    startActivity(i);
                    finish();
                } else {
                    System.out.println("In Foreground");
                    CSnackBar.getInstance().showSnackBarError(findViewById(R.id.mainLayout), "Otp not found", getApplicationContext());
                    new Handler().postDelayed(new Runnable() {
                        @Override
                        public void run() {
                            Intent i = new Intent(COtpAutoVerificationScreen.this, COtpManualVerificationScreen.class);
                            startActivity(i);
                            finish();
                        }
                    }, 3500);
                }
            }
        }.start();// start timer
        // retreive progress bar count........
        int progressBarMaximumValue = (int) (m_MillisInFuture / m_CountDownInterval);
        //Set ProgressBar maximum value
        //ProgressBar range (0 to maximum value)

        m_timerProgress.setMax(progressBarMaximumValue);

    } else {
        m_oTimer.cancel();
        m_n_ProgressStatus = 0;
        m_AlertDialog.show();
    }

}

Answer 1

您实际上是在onTick（long）函数中更新进度条。因此，一旦计时器暂停，进度条也是相同的。不幸的是，我找不到任何暂停它的方法。

我会在onTick处理程序中添加一些东西，以便在类变量中保存计时器的进度，例如剩下的毫秒数。

然后一旦网络被禁用，您可以调用计时器的cancel（）并保存毫秒左右的值和进度条状态（值）。

一旦启用网络活动，就会创建一个新的计时器，并保留剩余的毫秒数。

如何在android中暂停和恢复计时器和进度条？

1 个答案: