致命異常主Android應用

Question

我目前正在開發一款Android應用。當我點擊菜單時，菜單出現，但如果你選擇「首選項」，它會崩潰。如果你點擊「新建」，它工作正常。我不知道發生了什麼事。我對Android應用程序開發和eclipse IDE不熟悉，因此任何幫助。這裏是logcat的：

11-14 12:14:44.665: E/AndroidRuntime(392): FATAL EXCEPTION: main 
11-14 12:14:44.665: E/AndroidRuntime(392): java.util.UnknownFormatConversionException: Conversion: r 
11-14 12:14:44.665: E/AndroidRuntime(392): at java.util.Formatter$FormatToken.unknownFormatConversionException(Formatter.java:1420) 
11-14 12:14:44.665: E/AndroidRuntime(392): at java.util.Formatter$FormatToken.checkFlags(Formatter.java:1357) 
11-14 12:14:44.665: E/AndroidRuntime(392): at java.util.Formatter.transform(Formatter.java:1463) 
11-14 12:14:44.665: E/AndroidRuntime(392): at java.util.Formatter.doFormat(Formatter.java:1102) 
11-14 12:14:44.665: E/AndroidRuntime(392): at java.util.Formatter.format(Formatter.java:1063) 
11-14 12:14:44.665: E/AndroidRuntime(392): at java.util.Formatter.format(Formatter.java:1032) 
11-14 12:14:44.665: E/AndroidRuntime(392): at java.lang.String.format(String.java:2104) 
11-14 12:14:44.665: E/AndroidRuntime(392): at java.lang.String.format(String.java:2078) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.preference.ListPreference.getSummary(ListPreference.java:152) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.preference.Preference.onBindView(Preference.java:500) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.preference.Preference.getView(Preference.java:450) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.preference.PreferenceGroupAdapter.getView(PreferenceGroupAdapter.java:221) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.widget.AbsListView.obtainView(AbsListView.java:1949) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.widget.ListView.measureHeightOfChildren(ListView.java:1228) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.widget.ListView.onMeasure(ListView.java:1139) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.view.View.measure(View.java:10828) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4351) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1284) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.widget.LinearLayout.measureVertical(LinearLayout.java:613) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.widget.LinearLayout.onMeasure(LinearLayout.java:519) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.view.View.measure(View.java:10828) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4351) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1284) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:956) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.widget.LinearLayout.onMeasure(LinearLayout.java:521) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.view.View.measure(View.java:10828) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4351) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1284) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.widget.LinearLayout.measureVertical(LinearLayout.java:613) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.widget.LinearLayout.onMeasure(LinearLayout.java:519) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.view.View.measure(View.java:10828) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4351) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.widget.FrameLayout.onMeasure(FrameLayout.java:267) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.view.View.measure(View.java:10828) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4351) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.widget.FrameLayout.onMeasure(FrameLayout.java:267) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.view.View.measure(View.java:10828) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4351) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1284) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.widget.LinearLayout.measureVertical(LinearLayout.java:613) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.widget.LinearLayout.onMeasure(LinearLayout.java:519) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.view.View.measure(View.java:10828) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4351) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.widget.FrameLayout.onMeasure(FrameLayout.java:267) 
11-14 12:14:44.665: E/AndroidRuntime(392): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:1890) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.view.View.measure(View.java:10828) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.view.ViewRoot.performTraversals(ViewRoot.java:884) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.view.ViewRoot.handleMessage(ViewRoot.java:2003) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.os.Handler.dispatchMessage(Handler.java:99) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.os.Looper.loop(Looper.java:132) 
11-14 12:14:44.665: E/AndroidRuntime(392): at android.app.ActivityThread.main(ActivityThread.java:4025) 
11-14 12:14:44.665: E/AndroidRuntime(392): at java.lang.reflect.Method.invokeNative(Native Method) 
11-14 12:14:44.665: E/AndroidRuntime(392): at java.lang.reflect.Method.invoke(Method.java:491) 
11-14 12:14:44.665: E/AndroidRuntime(392): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841) 
11-14 12:14:44.665: E/AndroidRuntime(392): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599) 
11-14 12:14:44.665: E/AndroidRuntime(392): at dalvik.system.NativeStart.main(Native Method) 

這裏是被稱爲在崩潰的時間的方法：

/** when menu button option selected */ 
@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    switch (item.getItemId()) { 
    case R.id.menu_options: 
     startActivity(new Intent(this, WordSearchPreferences.class)); 
     return true; 
    case R.id.menu_new: 
     control.newWordSearch(); 
     return true; 
    }return super.onOptionsItemSelected(item); 
} 

這是用於此中的preferences.xml：

<?xml version="1.0" encoding="utf-8"?> 
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"> 
    <ListPreference android:key="@string/prefs_size" 
    android:title="@string/size" android:defaultValue="10" 
    android:summary="@string/prefs_size_summary" 
    android:entryValues="@array/sizes_list_values" 
    android:entries="@array/sizes_list_labels" /> 
<ListPreference android:key="@string/prefs_category" 
    android:title="@string/category" android:defaultValue="@string/RANDOM" 
    android:summary="@string/prefs_category_summary" 
    android:entryValues="@array/categories_list_values" 
    android:entries="@array/categories_list_labels" /> 
<ListPreference android:key="@string/prefs_touch_mode" 
    android:title="@string/input_type" android:defaultValue="@string/DRAG" 
    android:summary="@string/prefs_touch_mode_summary" 
    android:entryValues="@array/touch_mode_list_values" 
    android:entries="@array/touch_mode_list_labels" /> 
<ListPreference android:key="@string/PREFS_THEME" 
    android:title="@string/THEME" android:defaultValue="@string/THEME_ORIGINAL" 
    android:summary="@string/PREFS_THEME_SUMMARY" 
    android:entryValues="@array/THEME_VALUES" 
    android:entries="@array/THEME_LABELS" /> 
</PreferenceScreen> 

Answer 1

ListPreference使用String.format()生成首選項摘要，因此您可以通過%s混合首選項本身的數據。您似乎在使用%或描述中的一些令人困惑的內容String.format()。確保@string/prefs_size_summary和其他值具有適合String.format()的行爲。

此外，通常您不使用字符串資源android:key，因爲您不會翻譯您的首選項鍵。只有將字符串資源用於實際要翻譯的內容。