TimePickerDialog 取消按钮

Question

我有一个活动 - TimePickerActivity - 它创建了一个 TimePickerDialog。我有一个 onTimeSetListener 响应 Set 按钮，在该按钮结束时它调用 finish() 并返回到调用 TimePickerActivity 的活动。如果单击取消按钮，我希望它完成并返回，但找不到任何方法来执行此操作。我已经用谷歌搜索并尝试了几个建议，但它们似乎都不起作用。有什么简单的方法可以做到这一点吗？

Answer 1

只需将onCancelListener 传递给TimePicker.setOnCancelListener()

编辑：在 Ron 的实现问题之后，我决定实际测试自己的代码（我只是查看 API 来回答），我发现即使代码是正确的（我想你有一个我的代码编译正常时某处的错字），当单击取消按钮时，它没有按预期响应......

似乎当您单击cancel 按钮时，对话框不会调用触发OnCancelListener 的cancel() 方法，因为这似乎很明显，但是dismiss() 方法会触发OnDismissListener，好诡异……

所以这段代码对我来说很好用：

TimePickerDialog.OnTimeSetListener mTimeSetListener = new OnTimeSetListener() {
    public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
        //time set stuff
    }
};
TimePickerDialog myTPDialog = new TimePickerDialog(this,mTimeSetListener,0,0,false);
myTPDialog.setOnDismissListener(new OnDismissListener() {
    public void onDismiss(DialogInterface dialog) {
        // Cancel code here
    }
});
myTPDialog.show();

所有感谢 this 所以回答...

Answer 2

我是这样做的：

TimePickerDialog tp = new TimePickerDialog(this, mTimeSetListener, 0, 0, false);
tp.setButton(DialogInterface.BUTTON_NEGATIVE, "Cancel", new DialogInterface.OnClickListener() {
    public void onClick(DialogInterface dialog, int which)
    {
        if (which == DialogInterface.BUTTON_NEGATIVE)
        {
            tbTimer.setChecked(false);
        }
    }
});

Answer 3

TimePickerDialog.OnTimeSetListener timePickerListener = new TimePickerDialog.OnTimeSetListener() {
    @Override
    public void onTimeSet(TimePicker view, int hour, int minute) {
            //ok button clicked 
    }
};

Calendar c = Calendar.getInstance();
int now_hour = c.get(Calendar.HOUR_OF_DAY);
int now_minutes = c.get(Calendar.MINUTE);

final TimePickerDialog timePickerDialog = new TimePickerDialog(this, timePickerListener, now_hour, now_minutes + 1, false);

timePickerDialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
    @Override
    public void onCancel(DialogInterface dialog) {
        //cancel button clicked
    }
});

timePickerDialog.show();

Answer 4

我的解决方案基于@maid450 的回答、@Fortega 的评论以及 OnDismissListener 在显示时间选择器对话框时的任何点击被调用（通常在最后一回合）这一事实。

private int timeSetStatus; // A clicked button result.

...

timeSetStatus = 0;
final Calendar calendar = Calendar.getInstance();
final TimePickerDialog dialog = new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {
    @Override
    public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
        calendar.set(Calendar.HOUR_OF_DAY, hourOfDay);
        calendar.set(Calendar.MINUTE, minute);
        calendar.set(Calendar.SECOND, 0);

        timeSetStatus = 1;
        // Other actions.
    }
}, calendar.get(Calendar.HOUR_OF_DAY), 0, true);
dialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
    @Override
    public void onCancel(DialogInterface dialog) {
        timeSetStatus = 2;
        // Actions on clicks outside the dialog.
    }
});
dialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
    @Override
    public void onDismiss(DialogInterface dialog) {
        if (timeSetStatus == 0) {
            // Actions on Cancel button click.
        }
    }
});
dialog.show();

Answer 5

我刚刚覆盖（kotlin 示例代码）

override fun onCancel(dialog: DialogInterface?) {
   super.onCancel(dialog)
   callback?.onCancelClick()
}

DialogFragment 中的方法并调用了我的界面的 onCancelClick：

interface SetAlarmTimeListener: TimePickerDialog.OnTimeSetListener {
    fun onCancelClick()
}

Answer 6

终于有一个正在运行的解决方案...

在类中声明一个布尔变量，如下所示：

private boolean isTimeSelected;

然后点击按钮调用以下方法：

public void onButtonClicked() {
    TimePickerDialog timePickerDialog = new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {
        @Override
        public void onTimeSet(TimePicker timePicker, int selectedHour, int selectedMinute) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP || isTimeSelected) {
                lastSelectedHour = selectedHour;
                lastSelectedMinute = selectedMinute;
                // perform OK button tasks
            }
        }
    }, lastSelectedHour, lastSelectedMinute, true);

    timePickerDialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
        @Override
        public void onCancel(DialogInterface dialogInterface) {
            // perform CANCEL button tasks
        }
    });

    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
        timePickerDialog.setButton(DialogInterface.BUTTON_POSITIVE, "OK", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialogInterface, int which) {
                if (which == DialogInterface.BUTTON_POSITIVE) {
                    isTimeSelected = true;
                }
            }
        });

        timePickerDialog.setButton(DialogInterface.BUTTON_NEGATIVE, "CANCEL", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialogInterface, int which) {
                if (which == DialogInterface.BUTTON_NEGATIVE) {
                    isTimeSelected = false;
                }
            }
        });

        timePickerDialog.setCancelable(false);
        timePickerDialog.setTitle("Select Time");
    }
    timePickerDialog.show();
}