package com.calls.only;
import java.util.Calendar;
import android.app.Dialog;
import android.app.TimePickerDialog;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.widget.TimePicker;


public class TimePickerFragment extends DialogFragment
                            implements TimePickerDialog.OnTimeSetListener {

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        // Use the current time as the default values for the picker
        final Calendar c = Calendar.getInstance();
        int hour = c.get(Calendar.HOUR_OF_DAY);
        int minute = c.get(Calendar.MINUTE);

        // Create a new instance of TimePickerDialog and return it
        return new TimePickerDialog(getActivity(), this, hour, minute, false);
    }

    public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
        // Do something with the time chosen by the user
    }
}

package com.calls.only;


import java.util.Calendar;
import java.util.TimeZone;
import android.os.Bundle;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.DialogFragment;
import android.view.Menu;
import android.view.View;
import android.widget.RadioButton;
import android.widget.TextView;

public class MainActivity extends FragmentActivity {

public void InputStartTime(View v) {
    DialogFragment newFragment = new TimePickerFragment();
    newFragment.show(getSupportFragmentManager(), "timePicker");

}

private TimePickerDialog.OnTimeSetListener mTimeSetListener =
        new TimePickerDialog.OnTimeSetListener() {
                    //Overriding onTimeSet causes an error, see below
            public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
               Log.i("TimePicker", "Time picker set!");
            }
        };

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.activity_main, menu);
    return true;
}
}

我没有从日志中看到onTimeset方法

好吧，因为创建时TimePickerDialog，您将片段提供为OnTimeSetListener：

return new TimePickerDialog(getActivity(), this, hour, minute, false);
                                             ^

换句话说：您看不到log语句，因为mTimeSetListener活动中的变量永远不会设置为片段中创建的对话框的侦听器。

您可以通过将片段附加的活动投射到上来轻松解决此问题MainActivity，或者，如果您更喜欢可重用的内容，可以通过接口回调它。在这种情况下，您可以重用该OnTimeSetListener接口，但也可以设置自己的接口，例如，将一个Calendar对象而不是原始的小时/分钟值传递回活动。

在最基本的形式下，它看起来像这样：

public class TimePickerFragment extends DialogFragment {

    @Override public Dialog onCreateDialog(Bundle savedInstanceState) {
        // ... omitted

        if (!(getActivity() instanceof OnTimeSetListener)) throw new IllegalStateException("Activity should implement OnTimeSetListener!");
        OnTimeSetListener timeSetListener =  (OnTimeSetListener) getActivity();

        // Create a new instance of TimePickerDialog and return it
        return new TimePickerDialog(getActivity(), timeSetListener, hour, minute, false);
    }
}

然后让您MainActivity实现相同的接口，而不是使用匿名内部类：

public class MainActivity extends FragmentActivity implements TimePickerDialog.OnTimeSetListener {

    @Override public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
        Log.i("TimePicker", "Time picker set!");
    }
}

---

更新：
如评论中所述，要启用对多个选择器的支持，您有几种选择。一种是跟踪托管活动中显示的对话框。如果只需要区分两个选择器，则布尔值会很好用，否则枚举将是实现两个以上状态的合适方法。您将要确保在配置更改期间保留此信息…

但是，我希望做的是能够onTimeSet(...)通过为每个选择器提供一个ID来识别返回结果的来源。然后将该id包含在结果中，以便我们可以知道它的来源。我将在下面概述总体思路：

public class TimePickerFragment extends DialogFragment implements OnTimeSetListener {

    private int mId;
    private TimePickerDialogListener mListener;

    private static TimePickerFragment newInstance(int id) {
        Bundle args = new Bundle();
        args.putInt("picker_id", id);
        TimePickerFragment fragment = new TimePickerFragment();
        fragment.setArguments(args);
        return fragment;
    }

    @Override public Dialog onCreateDialog(Bundle savedInstanceState) {
        // ... omitted

        mId = getArguments().getInt("picker_id");
        mListener = getActivity() instanceof TimePickerDialogListener ? (TimePickerDialogListener) getActivity() : null;

        // Create a new instance of TimePickerDialog and return it
        return new TimePickerDialog(getActivity(), this, hour, minute, false);
    }

    @Override public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
        if (mListener != null) mListener.onTimeSet(mId, view, hourOfDay, minute);
    }

    public static interface TimePickerDialogListener {
        public void onTimeSet(int id, TimePicker view, int hourOfDay, int minute);
    }

}

上面我们进行了更改，就是将对话框本身注册为OnTimeSetListener，然后TimePickerDialogListener如果托管活动实现了该接口，它将通过传递数据。这就是我们下一步需要做的。另外，请注意，我添加了一个静态便捷方法来创建一个TimePickerFragment带有id
的新方法。该值将被设置为片段的参数，以确保它成为片段状态的一部分，因此您不必担心自己进行配置更改-框架将为您完成此操作。

因此，让我们进行更改MainActivity以实现我们的自定义界面，并使用以下newInstance方法：

public class MainActivity extends FragmentActivity implements TimePickerFragment.TimePickerDialogListener {

    private static final int START_TIME_PICKER_ID = 1;
    private static final int END_TIME_PICKER_ID = 2;

    public void InputStartTime(View v) {
        // supply the appropriate id - I'm assuming you'll be adding an InputEndTime method somewhere that will then supply END_TIME_PICKER_ID 
        DialogFragment newFragment = TimePickerFragment.newInstance(START_TIME_PICKER_ID);
        newFragment.show(getSupportFragmentManager(), "timePicker");
    }

    @Override public void onTimeSet(int id, TimePicker view, int hourOfDay, int minute) {
        Log.i("TimePicker", "Time picker set from id " + id + "!");

        // here you can compare the id value to figure out what picker this data came from
    }
}

最后一点：我直接在浏览器中输入了此信息，因此请注意任何明显的错别字。