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Android change Fragment page


you can download my zip here

ok so i made an app with Swipe+Tab View i want each tab to show a diffrent .xml page if u click above you can download my workspace to edit it .. i really need help please be spicific to if u want i can setup teamviwer if it could be faster.. if u dont want to download the file cause u think "it has a virus" just make a reply down below here is my code for the mainactivity.java

package twh.reviser.root;

import java.util.Locale;


import android.os.Bundle;
import android.renderscript.Int2;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.app.NavUtils;
import android.support.v4.view.ViewPager;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

public class MainActivity extends FragmentActivity {

/**
 * The {@link android.support.v4.view.PagerAdapter} that will provide
 * fragments for each of the sections. We use a
 * {@link android.support.v4.app.FragmentPagerAdapter} derivative, which
 * will keep every loaded fragment in memory. If this becomes too memory
 * intensive, it may be best to switch to a
 * {@link android.support.v4.app.FragmentStatePagerAdapter}.
 */
SectionsPagerAdapter mSectionsPagerAdapter;

/**
 * The {@link ViewPager} that will host the section contents.
 */
ViewPager mViewPager;

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


    // Create the adapter that will return a fragment for each of the three
    // primary sections of the app.
    mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());

    // Set up the ViewPager with the sections adapter.
    mViewPager = (ViewPager) findViewById(R.id.pager);
    mViewPager.setAdapter(mSectionsPagerAdapter);

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}



/**
 * A {@link FragmentPagerAdapter} that returns a fragment corresponding to
 * one of the sections/tabs/pages.
 */
public class SectionsPagerAdapter extends FragmentPagerAdapter {

    public SectionsPagerAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public Fragment getItem(int position) {
        // getItem is called to instantiate the fragment for the given page.
        // Return a DummySectionFragment (defined as a static inner class
        // below) with the page number as its lone argument.
        Fragment fragment = new DummySectionFragment();
        Bundle args = new Bundle();
        args.putInt(DummySectionFragment.ARG_SECTION_NUMBER, position + 1);
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public int getCount() {
        // Show 3 total pages.
        return 3;
    }

    @Override
    public CharSequence getPageTitle(int position) {
        Locale l = Locale.getDefault();
        switch (position) {
            case 0:
                return getString(R.string.title_section1).toUpperCase(l);
            case 1:
                return getString(R.string.title_section2).toUpperCase(l);
            case 2:
                return getString(R.string.title_section3).toUpperCase(l);
        }
        return null;
    }
}

/**
 * A dummy fragment representing a section of the app, but that simply
 * displays dummy text.
 */
public static class DummySectionFragment extends Fragment {
    /**
     * The fragment argument representing the section number for this
     * fragment.
     */
    public static final String ARG_SECTION_NUMBER = "section_number";

    public DummySectionFragment() {
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_main_dummy, container,    false);
        TextView dummyTextView = (TextView) rootView.findViewById(R.id.section_label);
            dummyTextView.setText(Integer.toString(getArguments().getInt(ARG_SECTION_NUMBER)));
        return rootView;
    }
}

}

Solution

  • Here is an example of my adapter that solves your problem. TabsPagerAdapter is just separate class.

    /**
     * This is a helper class that implements the management of tabs and all
     * details of connecting a ViewPager with associated TabHost.  It relies on a
     * trick.  Normally a tab host has a simple API for supplying a View or
     * Intent that each tab will show.  This is not sufficient for switching
     * between pages.  So instead we make the content part of the tab host
     * 0dp high (it is not shown) and the TabsAdapter supplies its own dummy
     * view to show as the tab content.  It listens to changes in tabs, and takes
     * care of switch to the correct paged in the ViewPager whenever the selected
     * tab changes.
     */
    public class TabsPagerAdapter extends FragmentPagerAdapter implements TabHost.OnTabChangeListener, ViewPager.OnPageChangeListener{
        private final Context mContext;
        private final TabHost mTabHost;
        private final ViewPager mViewPager;
        private final OnPageChangeListener mListener;
        private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>();
        private final FragmentManager mFragmentManager;
    
    
    
    
    
    
        static final class TabInfo {
            private final String tag;
            private final Class<?> clss;
            private final Bundle args;
    
            TabInfo(String _tag, Class<?> _class, Bundle _args) {
                tag = _tag;
                clss = _class;
                args = _args;
            }
        }
    
        static class DummyTabFactory implements TabHost.TabContentFactory {
            private final Context mContext;
    
            public DummyTabFactory(Context context) {
                mContext = context;
            }
    
            @Override
            public View createTabContent(String tag) {
                View v = new View(mContext);
                v.setMinimumWidth(0);
                v.setMinimumHeight(0);
                return v;
            }
        }
    
        public void addTab(String label, String tag, Drawable drawable, Class<?> c, int resourse) {
            addTab(this.mContext, label, tag, drawable, c, resourse);
        }
    
        public void addTab(Context context, String label, String tag, Drawable drawable, Class<?> c, int resourse) {
            Intent intent = new Intent(context, c);
            TabHost.TabSpec spec = mTabHost.newTabSpec(tag);
    
            View tabIndicator = LayoutInflater.from(context).inflate(resourse, (TabWidget)mTabHost.findViewById(android.R.id.tabs), false);
    
            ImageView icon = (ImageView) tabIndicator.findViewById(R.id.icon);
            icon.setImageDrawable(drawable);
            icon.setScaleType(ImageView.ScaleType.FIT_CENTER);
    
            spec.setIndicator(tabIndicator);
            spec.setContent(intent);
            this.addTab(spec, c, null);
        }
    
        public TabsPagerAdapter(FragmentActivity activity, TabHost tabHost, ViewPager pager, OnPageChangeListener listener, FragmentManager manager) {
            super(manager);
            mFragmentManager = manager;
            mContext = activity;
            mTabHost = tabHost;
            mViewPager = pager;
            mListener = listener;
            mTabHost.setOnTabChangedListener(this);
            mViewPager.setAdapter(this);
            mViewPager.setOnPageChangeListener(this);
    
        }
    
        public void addTab(TabHost.TabSpec tabSpec, Class<?> clss, Bundle args) {
            tabSpec.setContent(new DummyTabFactory(mContext));
            String tag = tabSpec.getTag();
    
            TabInfo info = new TabInfo(tag, clss, args);
            mTabs.add(info);
            mTabHost.addTab(tabSpec);
            notifyDataSetChanged();
        }
    
        @Override
        public int getCount() {
            return mTabs.size();
        }
    
    
        @Override
        public CharSequence getPageTitle (int position){
    
        }
    
    
    
        public Fragment getCurrentFragment() {
            return getFragmentAt(mTabHost.getCurrentTab());
        }
    
        public Fragment getFragmentAt(int position){
            return mFragmentManager.findFragmentByTag("android:switcher:" + mViewPager.getId() + ":" + position);
        }
    
        @Override
        public Fragment getItem(int position) {
            TabInfo info = (TabInfo) mTabs.get(position);
            return Fragment.instantiate(mContext, info.clss.getName(), info.args);
        }
    
        @Override
        public void onTabChanged(String tabId) {
            //called when the user clicks on a tab.
            int position = mTabHost.getCurrentTab();
            if(mViewPager.getCurrentItem() != position){
                 mViewPager.setCurrentItem(position);
            }
        }
    
        @Override
        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
             if(mListener!=null){
                 mListener.onPageScrolled(position, positionOffset, positionOffsetPixels);
             }
        }
    
        @Override
        public void onPageSelected(int position) {
            // Unfortunately when TabHost changes the current tab, it kindly
            // also takes care of putting focus on it when not in touch mode.
            // The jerk.
            // This hack tries to prevent this from pulling focus out of our
            // ViewPager.
            TabWidget widget = mTabHost.getTabWidget();
            int oldFocusability = widget.getDescendantFocusability();
            widget.setDescendantFocusability(ViewGroup.FOCUS_BLOCK_DESCENDANTS);
            mTabHost.setCurrentTab(position);
            widget.setDescendantFocusability(oldFocusability);
            if(mListener!=null){
                mListener.onPageSelected(position);
            }
    
        }
    
        @Override
        public void onPageScrollStateChanged(int state) {
             if(mListener!=null){
                 mListener.onPageScrollStateChanged(state);
             }
        }
    }
    

    This is android example framentadapter with tiny modifications.

    Example usage MainActivity.java

    class MainActivity extends FragmentActivuty{
    
    public void onCreate(Bundle savedInstanceState){
        setContentView(R.layout.activity_main);
    
        mTabHost = (TabHost) findViewById(android.R.id.tabhost);
        mTabHost.setup();
        mViewPager = (ViewPager) findViewById(R.id.pager);
        mTabsAdapter = new TabsPagerAdapter(this, mTabHost, mViewPager,null, getSupportFragmentManager());
    
        mTabsAdapter.addTab("Button", "button",getResources().getDrawable(R.drawable.yourdrawable),
        ButtonFragment.class, R.layout.yourtablayout);
    
        mTabsAdapter.addTab("Text","text",getResources().getDrawable(R.drawable.yourdrawable), TextFragment.class, R.layout.yourtablayout);
    
    
        //This is needed so your tabs do not reload each time
        mViewPager.setOffscreenPageLimit(mTabsAdapter.getCount());
    
    }