android - 如何在 fragment TAbHost 上添加滑动手势

Question

我想通过在屏幕上滑动来更改选项卡我正在使用 fragment tabhost 创建选项卡但是当我在我的项目中实现滑动功能时它不会打开每个选项卡中的嵌套 fragment 意味着我打开每个选项卡内的嵌套子 fragment 。

请告诉我这对我来说很重要。

这是我的代码。

这是我的主要 Activity 。

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentTabHost;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.widget.TabHost.OnTabChangeListener;
import android.widget.TextView;

    public class Home extends FragmentActivity implements OnTabChangeListener,OnPageChangeListener {

        private static final String TAB_1_TAG = "tab_1";
        private static final String TAB_2_TAG = "tab_2";
        private static final String TAB_3_TAG = "tab_3";
        private static final String TAB_4_TAG = "tab_4";
        private static final String TAB_5_TAG = "tab_5";
        private FragmentTabHost mTabHost;
//        ViewPager viewPager;
//        TabsPagerAdapter mAdapter;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_home);

           viewPager =(ViewPager)findViewById(R.id.viewpager);
            initView();
            mAdapter = new TabsPagerAdapter(getSupportFragmentManager());
            viewPager.setAdapter(mAdapter);
            viewPager.setOnPageChangeListener(Home.this);

        }

        private void initView() {
            mTabHost = (FragmentTabHost)findViewById(android.R.id.tabhost);
            mTabHost.setup(this, getSupportFragmentManager(), R.id.realtabcontent);

           // mTabHost.addTab(mTabHost.newTabSpec(TAB_1_TAG).setIndicator("Talk", getResources().getDrawable(R.drawable.ic_launcher)), TalkContainerFragment.class, null);
            mTabHost.addTab(mTabHost.newTabSpec(TAB_1_TAG).setIndicator("Talk"), TalkContainerFragment.class, null);
            mTabHost.addTab(mTabHost.newTabSpec(TAB_2_TAG).setIndicator("Map"), Map_fragment.class, null);
//            mTabHost.addTab(mTabHost.newTabSpec(TAB_3_TAG).setIndicator("Go"), GoContainerFragment.class, null);
//            mTabHost.addTab(mTabHost.newTabSpec(TAB_4_TAG).setIndicator("Watch"), WatchContainerFragment.class, null);
//            mTabHost.addTab(mTabHost.newTabSpec(TAB_5_TAG).setIndicator("More"), MoreContainerFragment.class, null);

            /* Increase tab height programatically 
             * tabs.getTabWidget().getChildAt(1).getLayoutParams().height = 150; 
             */

            for (int i = 0; i < mTabHost.getTabWidget().getChildCount(); i++) {
                final TextView tv = (TextView) mTabHost.getTabWidget().getChildAt(i).findViewById(android.R.id.title);
                if (tv == null)
                continue;
                else
                tv.setTextSize(10);

            }

        }

        @Override
        public void onBackPressed() {
            boolean isPopFragment = false;
            String currentTabTag = mTabHost.getCurrentTabTag();
            if (currentTabTag.equals(TAB_1_TAG)) {
                isPopFragment = ((BaseContainerFragment)getSupportFragmentManager().findFragmentByTag(TAB_1_TAG)).popFragment();
            } else if (currentTabTag.equals(TAB_2_TAG)) {
                isPopFragment = ((BaseContainerFragment)getSupportFragmentManager().findFragmentByTag(TAB_2_TAG)).popFragment();
            } else if (currentTabTag.equals(TAB_3_TAG)) {
                isPopFragment = ((BaseContainerFragment)getSupportFragmentManager().findFragmentByTag(TAB_3_TAG)).popFragment();
            } else if (currentTabTag.equals(TAB_4_TAG)) {
                isPopFragment = ((BaseContainerFragment)getSupportFragmentManager().findFragmentByTag(TAB_4_TAG)).popFragment();
            } else if (currentTabTag.equals(TAB_5_TAG)) {
                isPopFragment = ((BaseContainerFragment)getSupportFragmentManager().findFragmentByTag(TAB_5_TAG)).popFragment();
            }
            if (!isPopFragment) {
                finish();
            }
        }

        @Override
        public void onTabChanged(String tabId) {
            // TODO Auto-generated method stub
            int pos = this.mTabHost.getCurrentTab();
            this.viewPager.setCurrentItem(pos);
        }

        @Override
        public void onPageScrollStateChanged(int arg0) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onPageScrolled(int arg0, float arg1, int arg2) {
            // TODO Auto-generated method stub
            int pos = this.viewPager.getCurrentItem();
            this.mTabHost.setCurrentTab(pos);
        }

        @Override
        public void onPageSelected(int arg0) {
            // TODO Auto-generated method stub

        }


    } 

这个容器 fragment 类

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
import android.util.Log;

    public class BaseContainerFragment extends Fragment {

        public void replaceFragment(Fragment fragment, boolean addToBackStack) {
            FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
            if (addToBackStack) {
                transaction.addToBackStack(null);
            }
            transaction.replace(R.id.container_framelayout, fragment);
            transaction.commit();
            getChildFragmentManager().executePendingTransactions();
        }

        public boolean popFragment() {
            Log.e("test", "pop fragment: " + getChildFragmentManager().getBackStackEntryCount());
            boolean isPop = false;
            if (getChildFragmentManager().getBackStackEntryCount() > 0) {
                isPop = true;
                getChildFragmentManager().popBackStack();
            }
            return isPop;
        }

    }

为每个标签创建容器

  import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

        public class TalkContainerFragment extends BaseContainerFragment {

            private boolean mIsViewInited;

            @Override
            public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
                Log.e("test", "tab 1 oncreateview");
                return inflater.inflate(R.layout.container_fragment, null);
            }

            @Override
            public void onActivityCreated(Bundle savedInstanceState) {
                super.onActivityCreated(savedInstanceState);
                Log.e("test", "tab 1 container on activity created");
                if (!mIsViewInited) {
                    mIsViewInited = true;
                    initView();
                }
            }

TAlk.java文件

import java.util.HashSet;
import java.util.Set;

import org.json.JSONObject;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;

public class Talk extends Fragment {

    /** Define global variables over here */
    //private ProgressDialog pDialog;
//    StaticApiList sal;
//    TalkModelAll tma;
    JSONObject myJasonObject = null;
    private ListView lv;
//    private ArrayList<TalkModelAll> m_ArrayList = null;
    //ArrayList<String> stringArrayList = new ArrayList<String>();
//    TalkArrayAdapter taa;
    Set<String> uniqueValues = new HashSet<String>();
    TextView rowTextView = null;
    boolean vivek = false;

    int postid;
    String title;
    String thumsrc;
    String largeimg;
    String excert;
    String description;
    String cat;
    String myUrl;
    String jsonString;
    int mCurCheckPosition;
    String check_state = null;
    String ccc;
    LinearLayout myLinearLayout;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {

        View rootView = inflater.inflate(R.layout.talk, null);

        Button btn = (Button) rootView.findViewById(R.id.your_btn_id);
        btn.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                //Here TalkDetail is name of class that needs to open
                TalkDetail talkfragment = new TalkDetail();
                // if U need to pass some data 
                Bundle bundle = new Bundle();
//
//                bundle.putString("title", m_ArrayList.get(arg2).title);
//                bundle.putString("largeimg", m_ArrayList.get(arg2).largeimg);
//                bundle.putString("excert", m_ArrayList.get(arg2).excert);
//                bundle.putString("description", m_ArrayList.get(arg2).description);
//                bundle.putString("cat", m_ArrayList.get(arg2).cat);
//                //bundle.putInt("postid", m_ArrayList.get(arg2).postid);

                talkfragment.setArguments(bundle);
                ((BaseContainerFragment)getParentFragment()).replaceFragment(talkfragment, true);
            }
        });

        return rootView;
    }
}

Talkddetail.class

import android.app.Activity;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;

public class TalkDetail extends android.support.v4.app.Fragment {

    /* (non-Javadoc)
     * @see android.app.Fragment#onCreateView(android.view.LayoutInflater, android.view.ViewGroup, android.os.Bundle)
     */
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        View view=LayoutInflater.from(getActivity()).inflate(R.layout.activity_talk_detail, null);
        return view;
    }


}

Answer 1

您必须使用 ViewPager。在 Android Developer website 阅读更多内容.您可以在 Android Arsenal 上找到很多自定义 View 寻呼机.这是当前标准，因此您应该在 TabHost 上使用它。