好的，所以我试图在嵌套在AppCompatActivity中的F4中充气DialogPreference。每当我尝试访问活动主持人PreferenceFragment时，就会发生此错误。
PreferenceFragment这是我的DialogPreferenceClass
01-14 09:40:37.002 29689-29689/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.santinocampos.android.count, PID: 29689
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.santinocampos.android.count/com.myname.android.count.Settings.SettingsActivity}: android.view.InflateException: Binary XML file line #16: Binary XML file line #4: Error inflating class (not found)com.santinocampos.android.count.Settings.OptionDialogPreference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: android.view.InflateException: Binary XML file line #16: Binary XML file line #4: Error inflating class (not found)com.santinocampos.android.count.Settings.OptionDialogPreference
at android.view.LayoutInflater.inflate(LayoutInflater.java:539)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:276)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
at com.santinocampos.android.count.Settings.SettingsActivity.onCreate(SettingsActivity.java:20)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: android.view.InflateException: Binary XML file line #4: Error inflating class (not found)com.santinocampos.android.count.Settings.OptionDialogPreference
at android.support.v7.preference.PreferenceInflater.createItemFromTag(PreferenceInflater.java:300)
at android.support.v7.preference.PreferenceInflater.rInflate(PreferenceInflater.java:358)
at android.support.v7.preference.PreferenceInflater.inflate(PreferenceInflater.java:167)
at android.support.v7.preference.PreferenceInflater.inflate(PreferenceInflater.java:117)
at android.support.v7.preference.PreferenceManager.inflateFromResource(PreferenceManager.java:115)
at android.support.v7.preference.PreferenceFragmentCompat.addPreferencesFromResource(PreferenceFragmentCompat.java:366)
at com.santinocampos.android.count.Settings.SettingsFragment.onCreate(SettingsFragment.java:19)
at android.support.v4.app.Fragment.performCreate(Fragment.java:1951)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1029)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1230)
at android.support.v4.app.FragmentManagerImpl.addFragment(FragmentManager.java:1332)
at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2288)
at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:120)
at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:357)
at android.support.v4.app.BaseFragmentActivityHoneycomb.onCreateView(BaseFragmentActivityHoneycomb.java:31)
at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:80)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:754)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:835)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:276)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
at com.santinocampos.android.count.Settings.SettingsActivity.onCreate(SettingsActivity.java:20)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.myname
这是我的Preference xml，其中通胀失败
import android.content.Context;
import android.preference.DialogPreference;
import android.support.v7.preference.PreferenceViewHolder;
import android.util.AttributeSet;
import android.view.View;
import android.widget.EditText;
import com.myname.android.count.R;
import java.util.Set;
/**
* Created by thedr on 1/13/2017.
*/
public class MyDialogPreference extends DialogPreference {
public static final int KEY = R.string.preference_phoneNumber;
private EditText mPhoneNumberEditText;
public MyDialogPreference(Context context, AttributeSet attrs) {
super(context, attrs);
setPersistent(false);
setKey(getContext().getString(KEY));
String summary = getSharedPreferences().getString(SettingsActivity.PHONE_NUMBER_KEY, "");
setSummary(summary);
}
public void onBindDialogView(View view) {
super.onBindDialogView(view);
mPhoneNumberEditText = ((EditText) view.findViewById(R.id.editText_changeNumber));
}
public void onDialogClosed(boolean positive) {
getSharedPreferences()
.edit()
.putString(SettingsActivity.PHONE_NUMBER_KEY, mPhoneNumberEditText.getText().toString())
.apply();
super.onDialogClosed(positive);
persistBoolean(positive);
}
}
这是我的PreferenceFragment
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<com.myname.android.count.Settings.OptionDialogPreference
android:key="@string/preference_phoneNo"
android:dialogIcon="@android:drawable/ic_dialog_alert"
android:title="Reset Quests"
android:summary="Reset all quest-progress."
android:dialogMessage="Are you sure you wish to reset your quest progress? This action cannot be undone!"
android:positiveButtonText="Clear Quests"
android:negativeButtonText="Cancel"
/>
</PreferenceScreen>
这是我的主持人活动
package com.myname.android.count.Settings;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceFragment;
import android.support.v7.preference.*;
import com.santinocampos.android.count.R;
/**
* Created by thedr on 1/13/2017.
*/
public class SettingsFragment extends PreferenceFragmentCompat {
private static final String TAG = "SettingsFragment";
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.preferences);
}
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
}
@Override
public void onDisplayPreferenceDialog(Preference preference) {
super.onDisplayPreferenceDialog(preference);
if (preference.getKey().equals(getContext().getString(MyDialogPreference.KEY))) {
}
}
@Override
public void onCreatePreferences(Bundle bundle, String s) {
}
public static String getTagString() {
return TAG;
}
}