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アプリの起動時/再開時の設定アクティビティからデータを取得する方法を知りたいと思います。 私は、ユーザーがアプリケーションのロケールを選択できるようなプリファレンスアクティビティを持っていますが、アプリ起動時にforcecloseを引き起こす主なアクティビティからプリファレンスを読み込めないことがあるようです。ここにいくつかのコードがあります。 助けてください、おかげアプリの起動時の環境設定の読み方
import java.util.Locale;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.graphics.PixelFormat;
import android.graphics.Typeface;
import android.net.Uri;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.ImageButton;
import android.widget.TextView;
public class Main extends Activity {
/** Called when the activity is first created. */
String ListPreference;
//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
// Locale
//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
private void getPrefs() {
// Get the xml/preferences.xml preferences
SharedPreferences prefs = PreferenceManager
.getDefaultSharedPreferences(getBaseContext());
ListPreference = prefs.getString("listPref", "French");
if (ListPreference.equals("1")) {//do something
String languageToLoad = "fr";
Locale locale = new Locale(languageToLoad);
Locale.setDefault(locale);
Configuration config = new Configuration();
config.locale = locale;
getBaseContext().getResources().updateConfiguration(config,
getBaseContext().getResources().getDisplayMetrics());
}
if (ListPreference.equals("2")) {//do something
String languageToLoad = "en";
Locale locale = new Locale(languageToLoad);
Locale.setDefault(locale);
Configuration config = new Configuration();
config.locale = locale;
getBaseContext().getResources().updateConfiguration(config,
getBaseContext().getResources().getDisplayMetrics());
}
}
//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
// END locale Code
//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
screenOn();
setup();
getPrefs();
PreferenceManager.setDefaultValues(this, R.xml.preference, false);
this.overridePendingTransition(R.anim.fade_in, R.anim.fade_out);
}
private void setup() {
text1= (TextView) findViewById(R.id.Main_Action_Bar_Text);
Button1= (ImageButton) findViewById(R.id.sample);
Button2 = (ImageButton) findViewById(R.id.sample);
Button3 = (ImageButton) findViewById(R.id.sample);
Button4 = (ImageButton) findViewById(R.id.sample);
text2= (TextView) findViewById(R.id.sample);
text3= (TextView) findViewById(R.id.sample);
text4= (TextView) findViewById(R.id.sample);
text5= (TextView) findViewById(R.id.sample);
Typeface font = Typeface.createFromAsset(getAssets(), "font/kb.ttf");
}
@Override
protected void onResume() {
super.onResume();
getPrefs();
setup();
}
}
が、これは時間を割いて
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.myapp.information.Main}:
android.view.InflateException: Binary XML file line #5: Error inflating class java.lang.reflect.Constructor
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
at android.app.ActivityThread.access$1500(ActivityThread.java:117)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3687)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.view.InflateException: Binary XML file line #5: Error inflating class java.lang.reflect.Constructor
at android.preference.GenericInflater.createItem(GenericInflater.java:397)
at android.preference.GenericInflater.onCreateItem(GenericInflater.java:417)
at android.preference.GenericInflater.createItemFromTag(GenericInflater.java:428)
at android.preference.GenericInflater.rInflate(GenericInflater.java:481)
at android.preference.GenericInflater.rInflate(GenericInflater.java:493)
at android.preference.GenericInflater.inflate(GenericInflater.java:326)
at android.preference.GenericInflater.inflate(GenericInflater.java:263)
at android.preference.PreferenceManager.inflateFromResource(PreferenceManager.java:251)
at android.preference.PreferenceManager.setDefaultValues(PreferenceManager.java:444)
at android.preference.PreferenceManager.setDefaultValues(PreferenceManager.java:422)
at com.myapp.information.Main.onCreate(Main.java:168)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
... 11 more
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.constructNative(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:415)
at android.preference.GenericInflater.createItem(GenericInflater.java:383)
... 23 more
Caused by: java.lang.NullPointerException
at android.content.res.AssetManager.getResourceTextArray(AssetManager.java:214)
at android.content.res.Resources.getTextArray(Resources.java:361)
at android.content.res.TypedArray.getTextArray(TypedArray.java:628)
at android.preference.ListPreference.<init>(ListPreference.java:49)
... 26 more
// this is the line that throws exception (Main.java:168)
// I assume this line is to read the preferences when app starts
PreferenceManager.setDefaultValues(this, R.xml.preference, false);
おかげで再びRES/XMLフォルダ
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<PreferenceCategory
android:title="Language">
<ListPreference
android:title="Select Language"
android:key="listPref"
android:defaultValue="1"
android:entries="@array/Language"
android:entryValues="@array/listValues" />
</PreferenceCategory>
</PreferenceScreen>
エラーログにあるpreferences.xmlです。