Android Open Source - android-component-location Setting Fragment

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License

The source code is released under:
MIT License
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Java Source Code

package com.yingchn.android.fragment;
/*from ww w  .j  a v a 2  s . c o m*/
import android.annotation.SuppressLint;
import android.app.Dialog;
import android.os.Build;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceScreen;
import android.support.v4.preference.PreferenceFragment;
import android.support.v7.app.ActionBarActivity;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.ViewParent;
import android.widget.FrameLayout;
import android.widget.LinearLayout;

import com.yingchn.android.location.R;

public class SettingFragment extends PreferenceFragment {

  @Override
  public void onCreate(Bundle paramBundle) {
    super.onCreate(paramBundle);

    // Load the preferences from an XML resource
    addPreferencesFromResource(R.xml.preferences_setting);
  }

  @Override
  public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    ((ActionBarActivity) getActivity()).getSupportActionBar()
        .setDisplayHomeAsUpEnabled(true);
    ((ActionBarActivity) getActivity()).getSupportActionBar().setTitle(
        "Setting");
  }
  
  @Override
  public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
      super.onPreferenceTreeClick(preferenceScreen, preference);

      // If the user has clicked on a preference screen, set up the action bar
      if (Build.VERSION.SDK_INT > Build.VERSION_CODES.HONEYCOMB 
          && preference instanceof PreferenceScreen) {
          initializeActionBar((PreferenceScreen) preference);
      }

      return false;
  }  
  
  /** Sets up the action bar for an {@link PreferenceScreen} */
  @SuppressLint("NewApi")
  public static void initializeActionBar(PreferenceScreen preferenceScreen) {
      final Dialog dialog = preferenceScreen.getDialog();

      if (dialog != null) {
          // Inialize the action bar
          dialog.getActionBar().setDisplayHomeAsUpEnabled(true);

          // Apply custom home button area click listener to close the PreferenceScreen because PreferenceScreens are dialogs which swallow
          // events instead of passing to the activity
          // Related Issue: https://code.google.com/p/android/issues/detail?id=4611
          View homeBtn = dialog.findViewById(android.R.id.home);

          if (homeBtn != null) {
              OnClickListener dismissDialogClickListener = new OnClickListener() {
                  @Override
                  public void onClick(View v) {
                      dialog.dismiss();
                  }
              };

              // Prepare yourselves for some hacky programming
              ViewParent homeBtnContainer = homeBtn.getParent();

              // The home button is an ImageView inside a FrameLayout
              if (homeBtnContainer instanceof FrameLayout) {
                  ViewGroup containerParent = (ViewGroup) homeBtnContainer.getParent();

                  if (containerParent instanceof LinearLayout) {
                      // This view also contains the title text, set the whole view as clickable
                      ((LinearLayout) containerParent).setOnClickListener(dismissDialogClickListener);
                  } else {
                      // Just set it on the home button
                      ((FrameLayout) homeBtnContainer).setOnClickListener(dismissDialogClickListener);
                  }
              } else {
                  // The 'If all else fails' default case
                  homeBtn.setOnClickListener(dismissDialogClickListener);
              }
          }    
      }
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case android.R.id.home:
      getActivity().finish();
      return true;
    default:
      return super.onOptionsItemSelected(item);
    }
  }
}
Java Source Code List
