android.support.v4.app.FragmentPagerAdapter Java Examples

@Override
public Object instantiateItem(ViewGroup container, int position) {
    mViewPager = ((ViewPager) container);
    int realPosition =  (mAdapter instanceof FragmentPagerAdapter || mAdapter instanceof FragmentStatePagerAdapter)
            ? position
            : toRealPosition(position);

    if (mBoundaryCaching) {
        ToDestroy toDestroy = mToDestroy.get(position);
        if (toDestroy != null) {
            mToDestroy.remove(position);
            return toDestroy.object;
        }
    }

    if(realPosition >= 0 && realPosition < getRealCount())
        return mAdapter.instantiateItem(container, realPosition);
    return null;
}
 

private void initDatas()
{

	for (String data : mDatas)
	{
		VpSimpleFragment fragment = VpSimpleFragment.newInstance(data);
		mTabContents.add(fragment);
	}

	mAdapter = new FragmentPagerAdapter(getSupportFragmentManager())
	{
		@Override
		public int getCount()
		{
			return mTabContents.size();
		}

		@Override
		public Fragment getItem(int position)
		{
			return mTabContents.get(position);
		}
	};
}
 

private void onSelectItem(int position) {
    FragmentPagerAdapter adapter = (FragmentPagerAdapter) mViewPager.getAdapter();

    if (adapter.getItem(position) instanceof FragmentMain) {

        findViewById(R.id.amr_ripple_search).setVisibility(View.VISIBLE);
        findViewById(R.id.am_btn_menu).setVisibility(View.GONE);
        arcMenu.setVisibility(View.VISIBLE);
        setFabIcon(R.mipmap.plus);
    } else if (adapter.getItem(position) instanceof FragmentCall) {

        findViewById(R.id.amr_ripple_search).setVisibility(View.GONE);
        findViewById(R.id.am_btn_menu).setVisibility(View.VISIBLE);
        setFabIcon(R.drawable.ic_call_black_24dp);
        arcMenu.setVisibility(View.VISIBLE);
    }

    if (arcMenu.isMenuOpened()) {
        arcMenu.toggleMenu();
    }

    arcMenu.fabMenu.show();
}
 

private void createView() {
    CustomViewPager viewPager = (CustomViewPager) findViewById(R.id.view_pager);
    FragmentPagerAdapter adapter = new FragmentPagerAdapter(getSupportFragmentManager()) {
        @Override
        public int getCount() {
            return 1;
        }

        @Override
        public Fragment getItem(int position) {
            switch (position) {
                case 0:
                    return new CompassFragment();
            }
            return null;
        }
    };
    viewPager.setAdapter(adapter);
    viewPager.setCurrentItem(1);
}
 

/**
 * 将back事件分发给ViewPager中的Fragment,{@link #handleBackPress(FragmentManager)} 已经实现了对ViewPager的支持，所以自行决定是否使用该方法
 *
 * @return 如果处理了back键则返回 <b>true</b>
 * @see #handleBackPress(FragmentManager)
 * @see #handleBackPress(Fragment)
 * @see #handleBackPress(FragmentActivity)
 */
public static boolean handleBackPress(ViewPager viewPager) {
    if (viewPager == null) return false;

    PagerAdapter adapter = viewPager.getAdapter();

    if (adapter == null) return false;

    int currentItem = viewPager.getCurrentItem();
    Fragment fragment;
    if (adapter instanceof FragmentPagerAdapter) {
        fragment = ((FragmentPagerAdapter) adapter).getItem(currentItem);
    } else if (adapter instanceof FragmentStatePagerAdapter) {
        fragment = ((FragmentStatePagerAdapter) adapter).getItem(currentItem);
    } else {
        fragment = null;
    }
    return isFragmentBackHandled(fragment);
}
 

private void initView() {
    mIndicator = (ViewPagerIndicator) findViewById(ResFinder.getId("indicator"));
    mViewPager = (ViewPager) findViewById(ResFinder.getId("viewPager"));
    mIndicator.setTabItemTitles(mTitles);
    mAdapter = new FragmentPagerAdapter(getSupportFragmentManager()) {

        @Override
        public int getCount() {
            return mTitles.length;
        }

        @Override
        public Fragment getItem(int pos) {
            return getFragment(pos);
        }
    };
    mViewPager.setAdapter(mAdapter);
    // 设置关联的ViewPager
    mIndicator.setViewPager(mViewPager, 0);
    // 初始化Header的控件跟数据
    initHeader();
    initTitle();
}
 

public void setPagerAdapter(FragmentPagerAdapter pagerAdapter) {
    if(!(pagerAdapter instanceof OuterPagerAdapter)) {
        throw new IllegalArgumentException("MagicHeaderViewPager's " +
                "FragmentPagerAdapter must implements interface OuterPagerAdapter!");
    }

    mPagerAdapter = pagerAdapter;

    ((OuterPagerAdapter)mPagerAdapter).setOuterScroller(this);

    if(mViewPager != null) {
        mViewPager.setAdapter(mPagerAdapter);
        if(mPagerSlidingTabStrip !=null) {
            mPagerSlidingTabStrip.setViewPager(mViewPager);
        }
    }
}
 

@Override
protected void initWidgets() {

    mTitles = getResources().getStringArray(
            ResFinder.getResourceId(ResType.ARRAY, "umeng_comm_comments_tabs"));

    mIndicator = (ViewPagerIndicator) findViewById(ResFinder
            .getId("umeng_comm_comment_indicator"));
    mViewPager = (ViewPager) findViewById(ResFinder.getId("umeng_comm_comment_viewPager"));
    mIndicator.setTabItemTitles(mTitles);
    mAdapter = new FragmentPagerAdapter(getFragmentManager()) {

        @Override
        public int getCount() {
            return mTitles.length;
        }

        @Override
        public Fragment getItem(int pos) {
            return getFragment(pos);
        }
    };
    mViewPager.setAdapter(mAdapter);
    // 设置关联的ViewPager
    mIndicator.setViewPager(mViewPager, 0);
}
 

public void setFragmentAdapter(@NonNull FragmentPagerAdapter adapter,
                               @NonNull FragmentManager fm) {
    mOriginalAdapter = adapter;
    mInternalFragmentPagerAdapter = new InternalFragmentPagerAdapter(fm);

    super.setAdapter(mInternalFragmentPagerAdapter);
    mCurrentPosition = mOriginalAdapter.getCount() * 3 / 2;
    super.setCurrentItem(mOriginalAdapter.getCount() * 3 / 2, false);

    addOnPageChangeListener(new SimpleOnPageChangeListener() {
        @Override
        public void onPageScrollStateChanged(int state) {
            if (state == SCROLL_STATE_IDLE) {
                int size = mOriginalAdapter.getCount();
                if (mCurrentPosition < size / 2 + size % 2) {
                    mInternalFragmentPagerAdapter.shiftIndex(false);
                } else if (mCurrentPosition > size * 2 + size / 2) {
                    mInternalFragmentPagerAdapter.shiftIndex(true);
                }
            }
        }
    });
}
 

public void setFragmentAdapter(@NonNull FragmentPagerAdapter adapter,
                               @NonNull FragmentManager fm) {
    mOriginalAdapter = adapter;
    mInternalFragmentPagerAdapter = new InternalFragmentPagerAdapter(fm);

    super.setAdapter(mInternalFragmentPagerAdapter);
    mCurrentPosition = mOriginalAdapter.getCount() * 3 / 2;
    super.setCurrentItem(mOriginalAdapter.getCount() * 3 / 2, false);

    addOnPageChangeListener(new SimpleOnPageChangeListener() {
        @Override
        public void onPageScrollStateChanged(int state) {
            if (state == SCROLL_STATE_IDLE) {
                int size = mOriginalAdapter.getCount();
                if (mCurrentPosition < size / 2 + size % 2) {
                    mInternalFragmentPagerAdapter.shiftIndex(false);
                } else if (mCurrentPosition > size * 2 + size / 2) {
                    mInternalFragmentPagerAdapter.shiftIndex(true);
                }
            }
        }
    });
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_testroom);
    viewPager = (ViewPager)findViewById(R.id.view_pager);
    ballTabLayout =(BallTabLayout)findViewById(R.id.ball_tab_layout);

    viewPager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager()) {
        @Override
        public int getCount() {
            return 3;
        }

        @Override
        public Fragment getItem(int position) {
            return FragmentWithNum.newInstance(position);
        }
    });
    ballTabLayout.setupWithViewPager(viewPager);
}
 

@Override
public void initDatas() {
    mDatas = Arrays.asList(getResources().getStringArray(R.array.sub_rank_tabs));

    mTabContents = new ArrayList<>();
    mTabContents.add(SubRankFragment.newInstance(week));
    mTabContents.add(SubRankFragment.newInstance(month));
    mTabContents.add(SubRankFragment.newInstance(all));

    mAdapter = new FragmentPagerAdapter(getSupportFragmentManager()) {
        @Override
        public int getCount() {
            return mTabContents.size();
        }

        @Override
        public Fragment getItem(int position) {
            return mTabContents.get(position);
        }
    };
}
 

@Override
public void initDatas() {
    mDatas = Arrays.asList(getResources().getStringArray(R.array.sub_tabs));

    mPresenter.attachView(this);
    mPresenter.getCategoryListLv2();

    mTabContents = new ArrayList<>();
    mTabContents.add(SubCategoryFragment.newInstance(cate, "", gender, Constant.CateType.NEW));
    mTabContents.add(SubCategoryFragment.newInstance(cate, "", gender, Constant.CateType.HOT));
    mTabContents.add(SubCategoryFragment.newInstance(cate, "", gender, Constant.CateType.REPUTATION));
    mTabContents.add(SubCategoryFragment.newInstance(cate, "", gender, Constant.CateType.OVER));

    mAdapter = new FragmentPagerAdapter(getSupportFragmentManager()) {
        @Override
        public int getCount() {
            return mTabContents.size();
        }

        @Override
        public Fragment getItem(int position) {
            return mTabContents.get(position);
        }
    };
}
 

@Override
protected void initData() {
    for (int i = 0; i < mDatas.size(); i++) {
        BaseViewPagerFragment vpFragment = VPFragmentFactory.newInstance().getVpFragment(i);
        if (vpFragment != null) {
            mTabContents.add(vpFragment);
        }
    }

    mAdapter = new FragmentPagerAdapter(getSupportFragmentManager()) {
        @Override
        public int getCount() {
            return mTabContents.size();
        }

        @Override
        public Fragment getItem(int position) {
            return mTabContents.get(position);
        }
    };
}
 

@Override
public void initDatas() {
    startService(new Intent(this, DownloadBookService.class));

    mTencent = Tencent.createInstance("1105670298", MainActivity.this);

    mDatas = Arrays.asList(getResources().getStringArray(R.array.home_tabs));
    mTabContents = new ArrayList<>();
    mTabContents.add(new RecommendFragment());
    mTabContents.add(new CommunityFragment());
    mTabContents.add(new FindFragment());

    mAdapter = new FragmentPagerAdapter(getSupportFragmentManager()) {
        @Override
        public int getCount() {
            return mTabContents.size();
        }

        @Override
        public Fragment getItem(int position) {
            return mTabContents.get(position);
        }
    };
}
 

@Override
public void initDatas() {
    mDatas = Arrays.asList(getResources().getStringArray(R.array.sub_rank_tabs));

    mTabContents = new ArrayList<>();
    mTabContents.add(SubRankFragment.newInstance(week));
    mTabContents.add(SubRankFragment.newInstance(month));
    mTabContents.add(SubRankFragment.newInstance(all));

    mAdapter = new FragmentPagerAdapter(getSupportFragmentManager()) {
        @Override
        public int getCount() {
            return mTabContents.size();
        }

        @Override
        public Fragment getItem(int position) {
            return mTabContents.get(position);
        }
    };
}
 

@Override
public void initDatas() {
    mDatas = Arrays.asList(getResources().getStringArray(R.array.sub_tabs));

    mPresenter.attachView(this);
    mPresenter.getCategoryListLv2();

    mTabContents = new ArrayList<>();
    mTabContents.add(SubCategoryFragment.newInstance(cate, "", gender, Constant.CateType.NEW));
    mTabContents.add(SubCategoryFragment.newInstance(cate, "", gender, Constant.CateType.HOT));
    mTabContents.add(SubCategoryFragment.newInstance(cate, "", gender, Constant.CateType.REPUTATION));
    mTabContents.add(SubCategoryFragment.newInstance(cate, "", gender, Constant.CateType.OVER));

    mAdapter = new FragmentPagerAdapter(getSupportFragmentManager()) {
        @Override
        public int getCount() {
            return mTabContents.size();
        }

        @Override
        public Fragment getItem(int position) {
            return mTabContents.get(position);
        }
    };
}
 

@Override
public void initDatas() {
    mDatas = Arrays.asList(getResources().getStringArray(R.array.bookdetail_community_tabs));

    mTabContents = new ArrayList<>();
    mTabContents.add(BookDetailDiscussionFragment.newInstance(bookId));
    mTabContents.add(BookDetailReviewFragment.newInstance(bookId));

    mAdapter = new FragmentPagerAdapter(getSupportFragmentManager()) {
        @Override
        public int getCount() {
            return mTabContents.size();
        }

        @Override
        public Fragment getItem(int position) {
            return mTabContents.get(position);
        }
    };
}
 

@Override
public void initDatas() {
    mDatas = Arrays.asList(getResources().getStringArray(R.array.bookdetail_community_tabs));

    mTabContents = new ArrayList<>();
    mTabContents.add(BookDetailDiscussionFragment.newInstance(bookId));
    mTabContents.add(BookDetailReviewFragment.newInstance(bookId));

    mAdapter = new FragmentPagerAdapter(getSupportFragmentManager()) {
        @Override
        public int getCount() {
            return mTabContents.size();
        }

        @Override
        public Fragment getItem(int position) {
            return mTabContents.get(position);
        }
    };
}
 

@Override
public void initDatas() {
    mDatas = Arrays.asList(getResources().getStringArray(R.array.subject_tabs));

    mTabContents = new ArrayList<>();
    mTabContents.add(SubjectFragment.newInstance("", 0));
    mTabContents.add(SubjectFragment.newInstance("", 1));
    mTabContents.add(SubjectFragment.newInstance("", 2));

    mAdapter = new FragmentPagerAdapter(getSupportFragmentManager()) {
        @Override
        public int getCount() {
            return mTabContents.size();
        }

        @Override
        public Fragment getItem(int position) {
            return mTabContents.get(position);
        }
    };
}
 

@Override
public void initDatas() {
    mDatas = Arrays.asList(getResources().getStringArray(R.array.subject_tabs));

    mTabContents = new ArrayList<>();
    mTabContents.add(SubjectFragment.newInstance("", 0));
    mTabContents.add(SubjectFragment.newInstance("", 1));
    mTabContents.add(SubjectFragment.newInstance("", 2));

    mAdapter = new FragmentPagerAdapter(getSupportFragmentManager()) {
        @Override
        public int getCount() {
            return mTabContents.size();
        }

        @Override
        public Fragment getItem(int position) {
            return mTabContents.get(position);
        }
    };
}
 

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

    ImageLoaderConfiguration configuration = new ImageLoaderConfiguration.Builder(this).build();
    ImageLoader.getInstance().init(configuration);

    contentPager = findViewById(R.id.pager);
    contentPager.setOffscreenPageLimit(2);
    contentPager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager()) {
        @Override
        public Fragment getItem(int i) {
            if (i == 0) {
                return new AutoScrollPagerFragment();
            }
            return TextFragment.newInstance("Fragment " + i);
        }

        @Override
        public int getCount() {
            return 3;
        }
    });
}
 

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

    ViewPager pager = (ViewPager) findViewById(R.id.view_pager);
    pager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager()) {
        @Override
        public Fragment getItem(int i) {
            return new MainFragment();
        }

        @Override
        public int getCount() {
            return 5;
        }
    });
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_forget_pwd);
	myApp = (MyApplication) getApplication();
	tv1 = (TextView) findViewById(R.id.find_by_phone);
	tv2 = (TextView) findViewById(R.id.find_by_email);
	backTV = (TextView) findViewById(R.id.back);
	backTV.setOnClickListener(this);

	FragmentPagerAdapter adapter = new ForgetPwdFragmentAdapter(
			getSupportFragmentManager());
	viewPager = (ViewPager) findViewById(R.id.pager);
	viewPager.setAdapter(adapter);

	MyPagerIndicator underline_indicator = (MyPagerIndicator) findViewById(R.id.underline_indicator);
	underline_indicator.setViewPager(viewPager);

	tv1.setOnClickListener(this);
	tv2.setOnClickListener(this);
	changeTextColor(viewPager.getCurrentItem());
}
 

@Override
public Object instantiateItem(ViewGroup container, int position) {
    int realPosition = (mAdapter instanceof FragmentPagerAdapter
            || mAdapter instanceof FragmentStatePagerAdapter) ? position
            : toRealPosition(position);

    if (mBoundaryCaching) {
        ToDestroy toDestroy = mToDestroy.get(position);
        if (toDestroy != null) {
            mToDestroy.remove(position);
            return toDestroy.object;
        }
    }
    return mAdapter.instantiateItem(container, realPosition);
}
 

void setTabLayout() {
  TabLayout tabLayout = (TabLayout) findViewById(R.id.loginActivity_tabLayout);
  ViewPager viewPager = (ViewPager) findViewById(R.id.loginActivity_viewPager);
  //初始化各fragment
  LoginPhoneFragment loginPhoneFragment = new LoginPhoneFragment();
  //   LoginLegacyFragment loginLegacyFragment = new LoginLegacyFragment();
  //   loginLegacyFragment.setActivity(this);
  loginPhoneFragment.setActivity(this);
  //将fragment装进列表中
  List<Fragment> fragmentList = new ArrayList<>();
  fragmentList.add(loginPhoneFragment);
  //   fragmentList.add(loginLegacyFragment);
  //将名称加载tab名字列表，正常情况下，我们应该在values/arrays.xml中进行定义然后调用
  List<String> titleList = new ArrayList<>();
  titleList.add("手机号一键登录");
  //   titleList.add("传统登录");
  //设置TabLayout的模式
  tabLayout.setTabMode(TabLayout.MODE_FIXED);
  //为TabLayout添加tab名称
  tabLayout.addTab(tabLayout.newTab().setText(titleList.get(0)));
  //  tabLayout.addTab(tabLayout.newTab().setText(titleList.get(1)));
  FragmentManager fragmentManager = getSupportFragmentManager();
  FragmentPagerAdapter fAdapter = new FindTabAdapter(fragmentManager, fragmentList, titleList);
  //viewpager加载adapter
  viewPager.setAdapter(fAdapter);
  //TabLayout加载viewpager
  tabLayout.setupWithViewPager(viewPager);
}
 

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

    FragmentPagerAdapter adapter = new GoogleMusicAdapter(getSupportFragmentManager());

    ViewPager pager = (ViewPager)findViewById(R.id.pager);
    pager.setAdapter(adapter);

    TabPageIndicator indicator = (TabPageIndicator)findViewById(R.id.indicator);
    indicator.setViewPager(pager);
}
 

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

    pageAdapter = new FragmentPagerAdapter(getSupportFragmentManager()) {
        @Override
        public Fragment getItem(int position) {
            Class clss;
            switch(position) {
                case 0:
                    clss = JamFeedWidgetFragment.class;
                    break;
                case 1:
                    clss = JamGroupsListRename.class;
                    break;
                default:
                    throw new RuntimeException("Invalid tab index: " + position);
            }
            return Fragment.instantiate(JamSDKDemoApp.getAppContext(), clss.getName());
        }

        @Override
        public int getCount() {
            return 2;
        }
    };
    viewPager = (ViewPager) findViewById(R.id.viewpager);
    viewPager.setAdapter(pageAdapter);

}
 

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

    final FragmentManager fm = getSupportFragmentManager();
    final FragmentPagerAdapter pagerAdapter = new TimelinePagerAdapter(fm, getResources());
    final ViewPager viewPager = findViewById(R.id.pager);
    viewPager.setAdapter(pagerAdapter);

    final TabLayout tabLayout = findViewById(R.id.tab_layout);
    tabLayout.setupWithViewPager(viewPager);
}
 

private String getFragmentTag(int viewId, int index) {
    try {
        Class<FragmentPagerAdapter> cls = FragmentPagerAdapter.class;
        Class<?>[] parameterTypes = { int.class, long.class };
        Method method = cls.getDeclaredMethod("makeFragmentName",
                parameterTypes);
        method.setAccessible(true);
        String tag = (String) method.invoke(this, viewId, index);
        return tag;
    } catch (Exception e) {
        e.printStackTrace();
        return "";
    }
}