CODEWITHSUNDEEP
android
ringkjob
ringkjob

Reputation: 193

Opening custom dialog from SettingsFragment

I'm trying to follow the Android API guide on Settings, more specifically I'm trying to create this number picker dialog by following this part of the text. But I can't get it to work. When I press the preference that's supposed to launch the custom dialog, nothing happens. I assume I have to call something somewhere, but I can't figure out how.

Here's my MainActivity.java:

public class MainActivity extends Activity {

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

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

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case R.id.menu_settings_fragment:
        // Display the fragment as the main content
        Intent i = new Intent();
        i.setClass(this, SettingsActivity.class);
        startActivityForResult(i, 0);
        return true;
    default:
        return super.onOptionsItemSelected(item);
    }
} 
}

And it launches SettingsActivity.java nicely. SettingsActivity.java:

public class SettingsActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Display the fragment as the main content.
    getFragmentManager().beginTransaction()
            .replace(android.R.id.content, new SettingsFragment()).commit();
}
}

Goes to SettingsFragment.java:

public class SettingsFragment extends PreferenceFragment {

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Load the preferences from an XML resource
    addPreferencesFromResource(R.xml.preferences);
}
}

Which launches preferences.xml:

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >

    <PreferenceCategory
        android:key="pref_key_category_settings"
        android:title="@string/pref_category1_title" >
        <CheckBoxPreference
            android:defaultValue="true"
            android:key="pref_checkbox"
            android:summary="@string/pref_checkbox_summ"
            android:title="@string/pref_sync" />
        <CheckBoxPreference
            android:defaultValue="true"
            android:key="pref_checkbox_choose_int"
            android:summary="@string/pref_checkbox_choose_string_summ"
            android:title="@string/pref_choose_string" />

        <Preference
            android:dependency="pref_checkbox_choose_int"
            android:key="pref_key_num_scroller"
            android:summary="@string/pref_num_scroller_summ"
            android:title="@string/pref_num_scroller"/>
    </PreferenceCategory>

</PreferenceScreen>

As I said: nothing happens when I click pref_key_num_scroller.

I have no idea on how to call NumberPickerPreference.java:

public class NumberPickerPreference extends DialogPreference {

public NumberPickerPreference(Context context, AttributeSet attrs) {
    super(context, attrs);

    setDialogLayoutResource(R.layout.numberpicker_dialog);
    setPositiveButtonText(android.R.string.ok);
    setNegativeButtonText(android.R.string.cancel);
}
}

Upvotes: 1

Views: 1793

Answers (1)

ekholm
ekholm

Reputation: 2573

Change Preference to NumberPickerPreference in your XML, using its fully qualified name:

<com.something.settings.NumberPickerPreference 
    android:dependency="pref_checkbox_choose_int"
    android:key="pref_key_num_scroller"
    android:summary="@string/pref_num_scroller_summ"
    android:title="@string/pref_num_scroller"/>

Upvotes: 2

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