我搜索但无法找到问题的确切解决方案。 我有一个使用ActionBar.NAVIGATION_MODE_TABS的MainActivity应用程序，它允许主分页器支持可滑动的Tab片段。 当我打开菜单（SlidingMenu）并单击某个项目时。我想要一个新的片段（或布局）替换主要的寻呼机布局（其中包含标签 - 片段）。 例如，打开应用程序后，我们可以看到4个标签：短信，通话，时间表，新闻。 打开SlidingMenu，我们有3个项目：设置，日历，关于。 点击设置，新内容将取代旧的。现在我们只看到一页。 我的MainActivity.java代码：
package com.giacngumo.SMS_Call_Calendar_Tracking;
import android.util.Log;
import com.actionbarsherlock.app.ActionBar;
import android.os.Bundle;
import android.support.v4.app.*;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import com.actionbarsherlock.internal.app.ActionBarImpl;
import com.actionbarsherlock.internal.app.ActionBarWrapper;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuItem;
import com.giacngumo.SMS_CallLog_Calendar_Tracking.SMS_CallLog_Calendar_Tracking.R;
import com.jeremyfeinstein.slidingmenu.lib.SlidingMenu;
import com.jeremyfeinstein.slidingmenu.lib.app.SlidingFragmentActivity;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
public class MainActivity extends SlidingFragmentActivity {
AppSectionsPagerAdapter mAppSectionsPagerAdapter;
ViewPager mViewPager;
protected ListFragment mFrag;
/**
* Called when the activity is first created.
*/
@Override
public void onCreate(Bundle savedInstanceState) {
try {
setTitle(R.string.title_bar_slide);
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// set the Behind View
setBehindContentView(R.layout.menu_frame);
FragmentTransaction t = this.getSupportFragmentManager().beginTransaction();
mFrag = new MenuListFragment();
t.replace(R.id.menu_frame, mFrag);
t.commit();
// configure the SlidingMenu
final SlidingMenu slidingMenu = getSlidingMenu();
slidingMenu.setShadowWidthRes(R.dimen.shadow_width);
slidingMenu.setShadowDrawable(R.drawable.shadow);
slidingMenu.setBehindOffsetRes(R.dimen.slidingmenu_offset);
slidingMenu.setFadeDegree(0.35f);
slidingMenu.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);
// Set up the action bar.
final ActionBar actionBar = getSupportActionBar();
//pre-ICS
if (actionBar instanceof ActionBarImpl) {
enableEmbeddedTabs(actionBar);
//ICS and forward
} else if (actionBar instanceof ActionBarWrapper) {
try {
Field actionBarField = actionBar.getClass().getDeclaredField("mActionBar");
actionBarField.setAccessible(true);
//enableEmbeddedTabs(actionBarField.get(actionBar));
} catch (Exception e) {
//Log.e(TAG, "Error enabling embedded tabs", e);
}
}
// Specify that the Home/Up button should not be enabled, since there is no hierarchical
// parent.
actionBar.setHomeButtonEnabled(true);
actionBar.setIcon(R.drawable.hamburger_icon);
// Specify that we will be displaying tabs in the action bar.
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
actionBar.setDisplayShowTitleEnabled(false);
// Create the adapter that will return a fragment for each of the four primary sections
// of the app.
mAppSectionsPagerAdapter = new AppSectionsPagerAdapter(getSupportFragmentManager());
// Set up the ViewPager, attaching the adapter and setting up a listener for when the
// user swipes between sections.
mViewPager = (ViewPager) findViewById(R.id.main_pager);
mViewPager.setAdapter(mAppSectionsPagerAdapter);
mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
@Override
public void onPageSelected(int position) {
// When swiping between different app sections, select the corresponding tab.
// We can also use ActionBar.Tab#select() to do this if we have a reference to the
// Tab.
actionBar.setSelectedNavigationItem(position);
switch (position) {
case 0:
slidingMenu.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);
break;
default:
slidingMenu.setTouchModeAbove(SlidingMenu.TOUCHMODE_MARGIN);
}
}
});
// For each of the sections in the app, add a tab to the action bar.
// Create a tab with text corresponding to the page title defined by the adapter.
// Also specify this Activity object, which implements the TabListener interface, as the
// listener for when this tab is selected.
actionBar.addTab(
actionBar.newTab()
.setCustomView(R.layout.tab_sms)
.setTabListener(tabListener));
actionBar.addTab(
actionBar.newTab()
.setCustomView(R.layout.tab_calllog)
.setTabListener(tabListener));
actionBar.addTab(
actionBar.newTab()
.setCustomView(R.layout.tab_schedule)
.setTabListener(tabListener));
actionBar.addTab(
actionBar.newTab()
.setCustomView(R.layout.tab_news)
.setTabListener(tabListener));
} catch (Exception ex) {
Log.e("error", ex.getMessage());
}
}
//helper method
private void enableEmbeddedTabs(Object actionBar) {
try {
Method setHasEmbeddedTabsMethod = actionBar.getClass().getDeclaredMethod("setHasEmbeddedTabs", boolean.class);
setHasEmbeddedTabsMethod.setAccessible(true);
setHasEmbeddedTabsMethod.invoke(actionBar, true);
} catch (Exception e) {
//Log.e(TAG, "Error marking actionbar embedded", e);
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
toggle();
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getSupportMenuInflater().inflate(R.menu.main, menu);
return true;
}
ActionBar.TabListener tabListener = new ActionBar.TabListener() {
public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) {
// When the tab is selected, switch to the
// corresponding page in the ViewPager.
mViewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction ft) {
}
@Override
public void onTabReselected(ActionBar.Tab tab, FragmentTransaction ft) {
}
};
/**
* A {@link android.support.v4.app.FragmentPagerAdapter} that returns a fragment corresponding to one of the primary
* sections of the app.
*/
public static class AppSectionsPagerAdapter extends FragmentPagerAdapter {
public AppSectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int i) {
Fragment fragment = null;
Bundle args = new Bundle();
if (i == 0) {
// sms case
fragment = new Sms_ListFragment();
} else if (i == 1) {
// call log case
fragment = new Call_ListFragment();
} else if (i == 2) {
// schedule case
fragment = new Call_ListFragment();
} else if (i == 3) {
fragment = new Call_ListFragment();
}
return fragment;
}
@Override
public int getCount() {
return 4;
}
@Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return "SMS";
case 1:
return "Call Log";
case 2:
return "Schedule";
case 3:
return "News";
default:
return "Section " + (position + 1);
}
}
}
public void switchContent(Fragment fragment) {
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.main_pager, fragment)
.commit();
getSlidingMenu().showContent();
}
}
我处理滑动菜单项的MenuListFragment代码： package com.giacngumo.SMS_Call_Calendar_Tracking;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.app.ListFragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.*;
import com.giacngumo.SMS_CallLog_Calendar_Tracking.SMS_CallLog_Calendar_Tracking.R;
public class MenuListFragment extends ListFragment {
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.list, null);
}
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
MenuListAdapter adapter = new MenuListAdapter(getActivity());
adapter.add(new MenuListRowItem("Backup into Calendar", R.drawable.ic_calendar));
adapter.add(new MenuListRowItem("Backup into Gmail", R.drawable.ic_action_mail));
adapter.add(new MenuListRowItem("Auto Sync", android.R.drawable.ic_popup_sync));
adapter.add(new MenuListRowItem("Advanced Filter", R.drawable.filter_data_48));
adapter.add(new MenuListRowItem("Advanced Setting", R.drawable.schedule_icon));
adapter.add(new MenuListRowItem("Restore", R.drawable.ic_restore));
adapter.add(new MenuListRowItem("Tutorial", R.drawable.ic_launcher));
setListAdapter(adapter);
}
private class MenuListRowItem {
public String tag;
public int iconRes;
public MenuListRowItem(String tag, int iconRes) {
this.tag = tag;
this.iconRes = iconRes;
}
}
public class MenuListAdapter extends ArrayAdapter<MenuListRowItem> {
public MenuListAdapter(Context context) {
super(context, 0);
}
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = LayoutInflater.from(getContext()).inflate(R.layout.menu_row, null);
}
ImageView icon = (ImageView) convertView.findViewById(R.id.menu_row_icon);
icon.setImageResource(getItem(position).iconRes);
TextView title = (TextView) convertView.findViewById(R.id.menu_row_title);
title.setText(getItem(position).tag);
//icon.setBackgroundColor(Color.BLACK);
//title.setBackgroundColor(Color.BLACK);
title.setTextColor(Color.WHITE);
return convertView;
}
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
//l.setItemChecked(position, !mAdapter.isPositionChecked(position));
//Toast.makeText(getActivity(), "click on "+position, Toast.LENGTH_SHORT).show();
FragmentManager manager = getFragmentManager();
FragmentTransaction transaction = manager.beginTransaction();
Fragment frag = null;
switch (position) {
case 0:
//frag = new CalendarFragment();
frag = new ColorFragment(R.color.green);
break;
case 1:
//frag = new FormFragment();
break;
case 2:
//frag = new CompFragment();
break;
case 3:
//frag = new CompFragment();
break;
case 4:
//frag = new CompFragment();
break;
case 5:
//frag = new CompFragment();
break;
case 6:
//frag = new CompFragment();
break;
default:
//frag = new ContactFragment();
break;
}
if (frag != null)
switchFragment(frag);
}
// the meat of switching the above fragment
private void switchFragment(Fragment fragment) {
if (getActivity() == null)
return;
if (getActivity() instanceof MainActivity) {
MainActivity mainActivity = (MainActivity) getActivity();
mainActivity.switchContent(fragment);
}/* else if (getActivity() instanceof ResponsiveUIActivity) {
ResponsiveUIActivity ra = (ResponsiveUIActivity) getActivity();
ra.switchContent(fragment);
}*/
}
}
答案 0 :(得分：-2)
使用：
MainActivity.mViewPager.setCurrentItem(0);