TabActivity用的ActivityGroup和preferenceActivity孩子

问题描述

限时删除！！

我有一个TabActivity其中每个标签都有的ActivityGroup。在第一组的归属ActivityChild我有一个菜单选项，这给用户以打开preferences的选项。当我点击菜单preferences，我开始里面的ActivityGroup preferenceActivity，其中显示了第一个选项卡上的preferenceActivity。问题是，当我点击任何特定的preference有显示一个对话框（为的EditText preference）。我有以下异常：

  android.view.WindowManager $ BadTokenException：无法添加窗口 - 令牌android.app.LocalActivityManager$LocalActivityRecord@405d3a20
 

据我所知，这个问题是因为对话框由preferenceActivity显示使用了错误的情况下，但我不现在如何改变创造对话的环境。

初​​级讲座是我创建了preferenceActivity。

 公共类preferencesActivity扩展preferenceActivity实现OnShared preferenceChangeListener {
    @覆盖
    公共无效的onCreate（包savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout preferences）;
        加preferencesFromResource（R.xml preferences。）;
        共享preferences preFS = preferenceManager.getDefaultShared preferences（getApplicationContext（））;
        prefs.registerOnShared preferenceChangeListener（本）;
    }

    @覆盖
    公共无效onShared preferenceChanged（共享preferences共享preferences，字符串键）{

    }
}
 

我不希望创建自定义对话框。我想用preferenceActivity的机制这一点。下面是我使用添加到组中的code：

  I =新的意图（MyActivity.this，preferencesActivity.class）;
TabGroupActivity parentActivity =（TabGroupActivity）的getParent（）;
parentActivity.startChildActivity（preferencesActivity，我）;
 

任何想法？

解决方案

 这是非常普遍的问题对话框的选项卡中的主机。

其实活动范围内不足以显示一个对话框，在选项卡。


你必须使用你的GroupActivity进行对话的范围内加以无一例外启用
 

I have a TabActivity where each tab has ActivityGroup.On the home ActivityChild of the first group I have an menu option, which gives to the user the option to open preferences.When I click "Preferences" on menu, I start PreferenceActivity inside ActivityGroup, which shows PreferenceActivity on the first tab.The problem is when I click on any specific preference which has to show a Dialog (for EditTextPreference).I have the following exception:

android.view.WindowManager$BadTokenException: Unable to add window -- token android.app.LocalActivityManager$LocalActivityRecord@405d3a20

I understand that the problem is because Dialog to be shown by PreferenceActivity uses wrong context, BUT i don't now how change the context of created dialog.

Belows is the PreferenceActivity I've created.

public class PreferencesActivity extends PreferenceActivity  implements OnSharedPreferenceChangeListener{
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.preferences);
        addPreferencesFromResource(R.xml.preferences);
        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
        prefs.registerOnSharedPreferenceChangeListener(this);
    }

    @Override
    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,String key) {

    }
}

I don't want to create custom dialogs. I want to use the mechanism of PreferenceActivity for that.Below is the code that I'm using to add to group:

i = new Intent(MyActivity.this, PreferencesActivity.class);
TabGroupActivity parentActivity = (TabGroupActivity) getParent();
parentActivity.startChildActivity("PreferencesActivity", i);

Any ideas?

解决方案

This is very common problem with dialog's in Tab Host.

Actually the Activity context is not sufficient to show a Dialog in Tab.


You have to use the context of your GroupActivity for the dialog to be enabled without exception

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