相关疑难解决方法(0)

操作栏兼容性已添加到支持库,修订版18中.它现在具有ActionBarActivity用于在旧版Android上使用操作栏创建活动的类.

有没有办法从支持库添加Action Bar PreferenceActivity？

以前我用ActionBarSherlock,它有SherlockPreferenceActivity.

有没有办法在首选项屏幕的底部添加一个按钮,并在滚动时使它们正常工作？

import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.preference.ListPreference;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.util.Log;
import android.view.Window;
import android.view.WindowManager;

public class OptionsActivity extends PreferenceActivity {
 private ListPreference mListPreference;

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

  setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
  requestWindowFeature(Window.FEATURE_NO_TITLE);
  getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
              getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);

  addPreferencesFromResource(R.xml.options);
  mListPreference = (ListPreference) findPreference("listpreference");
  mListPreference.setPersistent(false);  

 }
}

Exception Stacktrace is given below:
01-27 12:35:51.920: ERROR/AndroidRuntime(615): FATAL EXCEPTION: main
01-27 12:35:51.920: ERROR/AndroidRuntime(615): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.android.game/com.android.game.OptionsActivity}: android.util.AndroidRuntimeException: requestFeature() must be called before adding content
01-27 12:35:51.920: ERROR/AndroidRuntime(615):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
01-27 12:35:51.920: …