Fragment中监听onKey事件

摘要：本文分享开发中监听事件主要代码，供技术员参考学习。项目中越来越多的用到，下面记录一下在中监听的事件。实现事件，判断当前的是哪一个，是不是所需要的然后在需要监听事件的中写一个静态方法，传递与事件即可。

wemall-mobile是基于WeMall的android app商城，只需要在原商城目录下上传接口文件即可完成服务端的配置，客户端可定制修改。本文分享android开发Fragment中监听onKey事件主要代码，供技术员参考学习。
项目中越来越多的用到Fragment，下面记录一下在ActionBar中监听Fragment的onKey事件。
　　ActionBar实现Onkey事件，判断当前的fragment是哪一个，是不是所需要的Fragment,然后在需要监听OnKey事件的Fragment中写一个静态方法，传递keycode与event事件即可。

package info.androidhive.tabsswipe;
    import info.androidhive.tabsswipe.adapter.TabsPagerAdapter;
    import android.annotation.SuppressLint;
    import android.app.SearchManager;
    import android.content.Context;
    import android.support.v7.app.ActionBar;
    import android.support.v7.app.ActionBar.Tab;
    import android.support.v7.app.ActionBarActivity;
    import android.support.v7.widget.SearchView;
    import android.os.Bundle;
    import android.support.v4.app.Fragment;
    import android.support.v4.view.MenuItemCompat;
    import android.support.v4.view.ViewPager;
    import android.util.Log;
    import android.view.KeyEvent;
    import android.view.Menu;
    import android.view.MenuItem;
    
    @SuppressLint("NewApi")
    public class MainActivity extends ActionBarActivity  implements
            ActionBar.TabListener {
    
        private ViewPager viewPager;
        private TabsPagerAdapter mAdapter;
        private ActionBar actionBar;
        private Fragment fg;
        // Tab titles
        private String[] tabs = { "TopRatedFragment", "GamesFragment", "MoviesFragment" };
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            // Initilization
            viewPager = (ViewPager) findViewById(R.id.pager);
            actionBar = getSupportActionBar();
            mAdapter = new TabsPagerAdapter(getSupportFragmentManager());
            viewPager.setOffscreenPageLimit(3);
            viewPager.setAdapter(mAdapter);
            actionBar.setHomeButtonEnabled(false);
            actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);        
    
            // Adding Tabs
            for (String tab_name : tabs) {
                actionBar.addTab(actionBar.newTab().setText(tab_name)
                        .setTabListener(this));
            }
    
            /**
             * on swiping the viewpager make respective tab selected
             * */
            viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
    
                public void onPageSelected(int position) {
                    // on changing the page
                    // make respected tab selected
    //                actionBar.setSelectedNavigationItem(position);
                    actionBar.selectTab(actionBar.getTabAt(position));
                    mAdapter.getItem(position);
                    
                }
    
                public void onPageScrolled(int arg0, float arg1, int arg2) {
                }
    
                public void onPageScrollStateChanged(int arg0) {
                }
            });
        }
    
        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
    //        
            SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
            getMenuInflater().inflate(R.menu.main, menu);
            MenuItem searchItem = menu.findItem(R.id.action_settings);
            SearchView searchview = (SearchView)MenuItemCompat.getActionView(searchItem);
            searchview.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
            return super.onCreateOptionsMenu(menu);
        }
        
        
        public void onTabReselected(Tab arg0,
                android.support.v4.app.FragmentTransaction arg1) {
            // TODO Auto-generated method stub
            
        }
    
        public void onTabSelected(Tab arg0,
                android.support.v4.app.FragmentTransaction arg1) {
            // TODO Auto-generated method stub
            viewPager.setCurrentItem(arg0.getPosition());
            fg = mAdapter.getItem(arg0.getPosition());
            Log.d("fg", fg+"");
        }
    
        public void onTabUnselected(Tab arg0,
                android.support.v4.app.FragmentTransaction arg1) {
            // TODO Auto-generated method stub
            
        }
    
        @Override
        public boolean onKeyDown(int keyCode, KeyEvent event) {
            // TODO Auto-generated method stub
            Log.d("ActionBar", "OnKey事件");
            if(fg instanceof GamesFragment){
                GamesFragment.onKeyDown(keyCode, event);
            }
            return super.onKeyDown(keyCode, event);
        }
    }

原文详情地址：http://git.oschina.net/einsqi...
wemall-mobile商城详情地址：http://www.koahub.com/home/pr...
wemall官网地址：http://www.wemallshop.com
WeMall - 开源微商城 微信商城 商城源码 分销商城 b2b2c商城系统