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PODialogPreference force close
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  1. PODialogPreference force close
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    copied!<p>For a school project, I'm building an application using <code>PreferenceScreen</code>s as a framework.<br> I've created 2 new classes to suit my needs: <code>SeekBarDialogPreference</code> (designed to handle volumes and brightness) and <code>DigitalPreference</code> (for everything else).</p> <pre><code>class SeekBarDialogPreference extends DialogPreference { static HashMap&lt;String, Integer&gt; maxValues = new HashMap&lt;String, Integer&gt;(6); AudioManager am = (AudioManager) APP.getContext().getSystemService(Context.AUDIO_SERVICE); View views = new View(APP.getContext()); SeekBar sb; CheckBox cb; @Override protected void onBindDialogView(View view) { sb = (SeekBar) views.findViewById(R.id.seekbar); cb = (CheckBox) views.findViewById(R.id.unchanged_check); sb.setMax(maxValues.get(this.getKey())); super.onBindDialogView(view); } @Override protected void onDialogClosed(boolean positiveresult) { super.onDialogClosed(positiveresult); if (positiveresult) { Editor editor = getEditor(); editor.putInt(this.getKey(), cb.isChecked() ? -1 : sb.getProgress()); editor.commit(); } } void show() { onClick(); } } </code></pre> <p>and the DigitalPreference</p> <pre><code>public class DigitalPreference extends ListPreference{ void show(){ onClick(); } </code></pre> <p>Here's the unifying TopPage, which is the main page</p> <pre><code>public class TopPage extends PreferenceActivity { @Override public void onCreate(Bundle allthethings) { super.onCreate(allthethings); Map&lt;String, ?&gt; shareprefs = PreferenceManager.getDefaultSharedPreferences(this).getAll(); addPreferencesFromResource(R.xml.prefs); } @Override public void onStart() { getPrefs(); } private SeekBarDialogPreference makeSeekBar(Preference pref) { return (SeekBarDialogPreference) findPreference(pref.getKey()); } private DigitalPreference makeDigital(Preference pref) { return (DigitalPreference) findPreference(pref.getKey()); } private void setClickListener(Preference preference, final boolean isSeekBar) { preference.setOnPreferenceClickListener(new OnPreferenceClickListener() { public boolean onPreferenceClick(Preference pref) { if (isSeekBar) { makeSeekBarDialogPreference(pref).show(); } else { makeDigitalPreference(pref).show(); } return true; } }); } public void getPrefs() { SeekBarDialogPreference Ringvolume_preference = (SeekBarDialogPreference) findPreference("Ringvolume_preference"); setClickListener(Ringvolume_Preference, true); //Instantiated each Preference and attached a ClickListener to each } </code></pre> <p>I have all of the preferences declared in res/xml/prefs.xml. Now whenever I run the app, I get an immediate force close. I suspect there's something wrong with my Manifest:</p> <pre><code>&lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.gobernador" android:versionCode="1" android:versionName="0.1"&gt; &lt;uses-sdk android:minSdkVersion="5" android:targetSdkVersion="10"/&gt; &lt;application android:label="@string/app_name" android:name="APP"&gt; &lt;activity android:name=".TopPage" android:label="@string/app_name"&gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.MAIN" /&gt; &lt;category android:name="android.intent.category.LAUNCHER" /&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;/application&gt; &lt;/manifest&gt; </code></pre> <p>I've referenced <a href="https://stackoverflow.com/questions/5516022/android-launch-a-custom-preference-from-a-preferenceactivity">Android: launch a custom Preference from a PreferenceActivity</a>, among other stackoverflow questions, but I haven't been able to work out the problem.</p> <p>If someone could shepherd me in the right direction, you would be getting me out of a huge rut. Thanks!</p> <p>EDIT: After swimming through the logcat, I found an exception thrown in my prefs.xml file.</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" android:title="Settings"&gt; &lt;PreferenceScreen android:title="Volumes" android:summary="Ring, Notification, System, etc."&gt; &lt;com.gobernador.SeekBarDialogPreference android:key="Ringvolume_preference" android:title="Ring Volume" android:summary="" android:dialogLayout="@layout/seekbar_layout"/&gt; &lt;com.gobernador.SeekBarDialogPreference android:key="Notifyvolume_preference" android:title="Notification Volume" android:summary="" android:dialogLayout="@layout/seekbar_layout"/&gt; ... and so on </code></pre> <p>where it tries to access the <code>SeekBarDialogPreference</code>. Why isn't it working?</p> <p>EDIT: The Exception being thrown is a <code>NoSuchMethodException: SeekBarDialogPreference(Context,AttributeSet)</code>. I defined that method, what did I miss?</p>
 

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