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我在片段中使用 CountDownTimer 有时 onFinish() 会抛出错误

附加错误消息和错误代码

public void onFinish()
{
    btnTimerStart.setText(getString(R.string.btn_restart));
    timer_display.setTextSize(45);
    timer_display.setText(getString(R.string.btn_complete));
}


java.lang.IllegalStateException: 
  at android.support.v4.app.Fragment.requireContext (Fragment.java:696)
  at android.support.v4.app.Fragment.getResources (Fragment.java:760)
  at android.support.v4.app.Fragment.getString (Fragment.java:782)
  at com.sinwho.timer.TimerFragment$11.onFinish (TimerFragment.java:751)
  at android.os.CountDownTimer$1.handleMessage (CountDownTimer.java:127)
  at android.os.Handler.dispatchMessage (Handler.java:106)
  at android.os.Looper.loop (Looper.java:214)
  at android.app.ActivityThread.main (ActivityThread.java:7050)
  at java.lang.reflect.Method.invoke (Native Method)
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:493)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:965)
4

1 回答 1

1

问题是您的getString()方法无法获取context. 使用 . 给他们上下文getActivity()。尝试这个：

public void onFinish()
{
    btnTimerStart.setText(getActivity().getString(R.string.btn_restart));
    timer_display.setTextSize(45);
    timer_display.setText(getActivity().getString(R.string.btn_complete));
}

希望你的问题能得到解决。

于 2019-10-12T12:03:42.067 回答