TimePicker NullPointerException异常的ICS [英] TimePicker NullPointerException on ICS

问题描述

好了，所以我刚换我的 TimePickerDialog 到 TimePicker 控件直接显示在我工作的活动因为客户的需求。

Alright so I just switched my TimePickerDialog to a TimePicker widget directly visible in the Activity I'm working on because of customer demand.

现在的问题是，当我preSS任何在所述箭头 TimePicker ，我得到一个NullPointerException异常。

The problem is when I press any of the arrows on said TimePicker, I get a NullPointerException.

只是为了澄清，没有code什么那么连接到 TimePicker 除了此行的的onCreate（）我的活动方法：

Just to clarify, no code what so ever is attached to the TimePicker except this line in the onCreate() method of my Activity:

（（TimePicker）findViewById（R.id.time_picker））setIs24HourView（真）;

我发现这个帖子在谷歌关于这个问题的论坛，但没有太大的帮助。

I found this post on the Google Forums regarding this issue, but not much help.

这是我的错误日志，我黯然不认为这将是多大的帮助，但。

Here's my error log, I sadly don't think it'll be much help though.

这个问题只在ICS（Android的4.0 +）测试时出现。有没有人能够解决这个问题？

This issue only appears when testing in ICS (Android 4.0 +). Has anyone been able to work around this issue ?

推荐答案

只是写了一个示例应用程序，也没有错误的Galaxy SIII发现（4.0）：

Just wrote a sample application and no error found in Galaxy SIII (4.0):

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.TimePicker;
import android.widget.TimePicker.OnTimeChangedListener;

public class TimePickerTestActivity extends Activity implements OnTimeChangedListener{

    private TimePicker tpTime = null;
    private TextView tvTime = null;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        tvTime = (TextView)this.findViewById(R.id.tv_time);

        tpTime = (TimePicker)this.findViewById(R.id.tp_time);
        tpTime.setIs24HourView(Boolean.TRUE);
        tpTime.setOnTimeChangedListener(this);

    }
    public void onTimeChanged(TimePicker tp, final int hrOfDay, final int min) {
        if(tp.equals(tpTime)){
            tvTime.post(new Runnable(){

                public void run() {
                    tvTime.setText(hrOfDay+":"+min);
                }

            });
        }
    }
}

和布局的xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout   xmlns:android="http://schemas.android.com/apk/res/android"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:orientation="vertical" >

    <TimePicker android:id="@+id/tp_time"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content" />

    <TextView   android:id="@+id/tv_time"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content" />
</LinearLayout>

供参考： http://developer.android.com/reference/android/空间/ TimePicker.html

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