ActionBar之droplist的使用

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•i. 利用下拉选择项和布局，构建SpinnerAdapter。

•SpinnerAdaptermSpinnerAdapter =ArrayAdapter.createFromResource(this,R.array.action_list,android.R.layout.simple_spinner_dropdown_item);

•ii. 实现ActionBar.OnNavigationListener，来记录用户选择list中项目的行为。
public booleanonNavigationItemSelected(int position, longitemId)

•iii. 设置导航模式为ActionBar.NAVIGATION_MODE_LIST

•ActionBaractionBar =getActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);

•iv. 设置回调函数setListNavigationCallbacks()

•actionBar.setListNavigationCallbacks(mSpinnerAdapter,mNavigationCallback);

参考代码如下：

import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.ActionBar.TabListener;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.SearchView;
import android.widget.SpinnerAdapter;
import android.widget.Toast;

public class ActionBarTestActivity extends Activity implements ActionBar.OnNavigationListener{

@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }

@Override
protected void onStart() {
  // TODO Auto-generated method stub
  super.onStart();
  ActionBar bar = this.getActionBar();

  bar.setDisplayOptions(ActionBar.DISPLAY_HOME_AS_UP | ActionBar.DISPLAY_SHOW_CUSTOM, ActionBar.DISPLAY_HOME_AS_UP | ActionBar.DISPLAY_SHOW_CUSTOM);
  bar.setCustomView(R.layout.actionmode);
  SpinnerAdapter mSpinnerAdapter = ArrayAdapter.createFromResource(this, R.array.action, android.R.layout.simple_spinner_dropdown_item);

  bar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);

  bar.setListNavigationCallbacks(mSpinnerAdapter, this);
}

     @Override
public boolean onNavigationItemSelected(int itemPosition, long itemId) {
  // TODO Auto-generated method stub
  Log.v("Jeny", "itemPosition is ====="+itemPosition);
  switch(itemPosition){
   case 0:{
    Toast.makeText(this, "select item is "+itemPosition, Toast.LENGTH_SHORT).show();
    break;
   }
   case 1:{
    Toast.makeText(this, "select item is "+itemPosition, Toast.LENGTH_SHORT).show();
    break;
   }
   case 2:{
    Toast.makeText(this, "select item is "+itemPosition, Toast.LENGTH_SHORT).show();
    break;
   }
   case 3:{
    Toast.makeText(this, "select item is "+itemPosition, Toast.LENGTH_SHORT).show();
    break;
   }
   case 4:{
    Toast.makeText(this, "select item is "+itemPosition, Toast.LENGTH_SHORT).show();
    break;
   }
   case 5:{
    Toast.makeText(this, "select item is "+itemPosition, Toast.LENGTH_SHORT).show();
    break;
   }
   case 6:{
    Toast.makeText(this, "select item is "+itemPosition, Toast.LENGTH_SHORT).show();
    break;
   }
   case 7:{
    Toast.makeText(this, "select item is "+itemPosition, Toast.LENGTH_SHORT).show();
    break;
   }
   case 8:{
    Toast.makeText(this, "select item is "+itemPosition, Toast.LENGTH_SHORT).show();
    break;
   }
   case 9:{
    Toast.makeText(this, "select item is "+itemPosition, Toast.LENGTH_SHORT).show();
    break;
   }
   default:
    break;
   }
  return false;
}

}

【array.xml】

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string-array name="action">
        <item>0</item>
        <item>1</item>
        <item>2</item>
        <item>3</item>
        <item>4</item>
        <item>5</item>
        <item>6</item>
        <item>7</item>
        <item>8</item>
        <item>9</item>
    </string-array>
</resources>