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35 changes: 35 additions & 0 deletions
35
app/src/main/java/pl/michalz/hideonscrollexample/ScrollingFABBehavior.java
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| @@ -0,0 +1,35 @@ | ||
| package pl.michalz.hideonscrollexample; | ||
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| import android.content.Context; | ||
| import android.support.design.widget.AppBarLayout; | ||
| import android.support.design.widget.CoordinatorLayout; | ||
| import android.support.design.widget.FloatingActionButton; | ||
| import android.util.AttributeSet; | ||
| import android.view.View; | ||
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| public class ScrollingFABBehavior extends FloatingActionButton.Behavior { | ||
| private int toolbarHeight; | ||
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| public ScrollingFABBehavior(Context context, AttributeSet attrs) { | ||
| super(); | ||
| this.toolbarHeight = Utils.getToolbarHeight(context); | ||
| } | ||
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| @Override | ||
| public boolean layoutDependsOn(CoordinatorLayout parent, FloatingActionButton fab, View dependency) { | ||
| return super.layoutDependsOn(parent, fab, dependency) || (dependency instanceof AppBarLayout); | ||
| } | ||
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| @Override | ||
| public boolean onDependentViewChanged(CoordinatorLayout parent, FloatingActionButton fab, View dependency) { | ||
| boolean returnValue = super.onDependentViewChanged(parent, fab, dependency); | ||
| if (dependency instanceof AppBarLayout) { | ||
| CoordinatorLayout.LayoutParams lp = (CoordinatorLayout.LayoutParams) fab.getLayoutParams(); | ||
| int fabBottomMargin = lp.bottomMargin; | ||
| int distanceToScroll = fab.getHeight() + fabBottomMargin; | ||
| float ratio = (float)dependency.getY()/(float)toolbarHeight; | ||
| fab.setTranslationY(-distanceToScroll * ratio); | ||
| } | ||
| return returnValue; | ||
| } | ||
| } |
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75 changes: 75 additions & 0 deletions
75
app/src/main/java/pl/michalz/hideonscrollexample/activity/partthree/PartThreeActivity.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| package pl.michalz.hideonscrollexample.activity.partthree; | ||
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| import android.os.Bundle; | ||
| import android.support.design.widget.TabLayout; | ||
| import android.support.v4.app.Fragment; | ||
| import android.support.v4.app.FragmentManager; | ||
| import android.support.v4.app.FragmentPagerAdapter; | ||
| import android.support.v4.view.ViewPager; | ||
| import android.support.v7.app.AppCompatActivity; | ||
| import android.support.v7.widget.Toolbar; | ||
| import pl.michalz.hideonscrollexample.R; | ||
| import pl.michalz.hideonscrollexample.fragment.PartThreeFragment; | ||
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
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| public class PartThreeActivity extends AppCompatActivity { | ||
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| @Override | ||
| protected void onCreate(Bundle savedInstanceState) { | ||
| setTheme(R.style.AppThemeBlue); | ||
| super.onCreate(savedInstanceState); | ||
| setContentView(R.layout.activity_part_three); | ||
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| initToolbar(); | ||
| initViewPagerAndTabs(); | ||
| } | ||
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| private void initToolbar() { | ||
| Toolbar mToolbar = (Toolbar) findViewById(R.id.toolbar); | ||
| setSupportActionBar(mToolbar); | ||
| setTitle(getString(R.string.app_name)); | ||
| mToolbar.setTitleTextColor(getResources().getColor(android.R.color.white)); | ||
| } | ||
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| private void initViewPagerAndTabs() { | ||
| ViewPager viewPager = (ViewPager) findViewById(R.id.viewPager); | ||
| PagerAdapter pagerAdapter = new PagerAdapter(getSupportFragmentManager()); | ||
| pagerAdapter.addFragment(PartThreeFragment.createInstance(20), getString(R.string.tab_1)); | ||
| pagerAdapter.addFragment(PartThreeFragment.createInstance(4), getString(R.string.tab_2)); | ||
| viewPager.setAdapter(pagerAdapter); | ||
| TabLayout tabLayout = (TabLayout) findViewById(R.id.tabLayout); | ||
| tabLayout.setupWithViewPager(viewPager); | ||
| } | ||
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| static class PagerAdapter extends FragmentPagerAdapter { | ||
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| private final List<Fragment> fragmentList = new ArrayList<>(); | ||
| private final List<String> fragmentTitleList = new ArrayList<>(); | ||
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| public PagerAdapter(FragmentManager fragmentManager) { | ||
| super(fragmentManager); | ||
| } | ||
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| public void addFragment(Fragment fragment, String title) { | ||
| fragmentList.add(fragment); | ||
| fragmentTitleList.add(title); | ||
| } | ||
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| @Override | ||
| public Fragment getItem(int position) { | ||
| return fragmentList.get(position); | ||
| } | ||
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| @Override | ||
| public int getCount() { | ||
| return fragmentList.size(); | ||
| } | ||
| @Override | ||
| public CharSequence getPageTitle(int position) { | ||
| return fragmentTitleList.get(position); | ||
| } | ||
| } | ||
| } |
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55 changes: 55 additions & 0 deletions
55
app/src/main/java/pl/michalz/hideonscrollexample/fragment/PartThreeFragment.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,55 @@ | ||
| package pl.michalz.hideonscrollexample.fragment; | ||
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| import android.os.Bundle; | ||
| import android.support.annotation.Nullable; | ||
| import android.support.v4.app.Fragment; | ||
| import android.support.v7.widget.LinearLayoutManager; | ||
| import android.support.v7.widget.RecyclerView; | ||
| import android.view.LayoutInflater; | ||
| import android.view.View; | ||
| import android.view.ViewGroup; | ||
| import pl.michalz.hideonscrollexample.R; | ||
| import pl.michalz.hideonscrollexample.adapter.parttwo.RecyclerAdapter; | ||
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
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| public class PartThreeFragment extends Fragment { | ||
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| public final static String ITEMS_COUNT_KEY = "PartThreeFragment$ItemsCount"; | ||
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| public static PartThreeFragment createInstance(int itemsCount) { | ||
| PartThreeFragment partThreeFragment = new PartThreeFragment(); | ||
| Bundle bundle = new Bundle(); | ||
| bundle.putInt(ITEMS_COUNT_KEY, itemsCount); | ||
| partThreeFragment.setArguments(bundle); | ||
| return partThreeFragment; | ||
| } | ||
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| @Nullable | ||
| @Override | ||
| public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { | ||
| RecyclerView recyclerView = (RecyclerView) inflater.inflate( | ||
| R.layout.fragment_part_three, container, false); | ||
| setupRecyclerView(recyclerView); | ||
| return recyclerView; | ||
| } | ||
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| private void setupRecyclerView(RecyclerView recyclerView) { | ||
| recyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); | ||
| RecyclerAdapter recyclerAdapter = new RecyclerAdapter(createItemList()); | ||
| recyclerView.setAdapter(recyclerAdapter); | ||
| } | ||
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| private List<String> createItemList() { | ||
| List<String> itemList = new ArrayList<>(); | ||
| Bundle bundle = getArguments(); | ||
| if(bundle!=null) { | ||
| int itemsCount = bundle.getInt(ITEMS_COUNT_KEY); | ||
| for (int i = 0; i < itemsCount; i++) { | ||
| itemList.add("Item " + i); | ||
| } | ||
| } | ||
| return itemList; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| <?xml version="1.0" encoding="utf-8"?> | ||
| <android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android" | ||
| xmlns:app="http://schemas.android.com/apk/res-auto" | ||
| android:id="@+id/coordinatorLayout" | ||
| android:layout_width="match_parent" | ||
| android:layout_height="match_parent"> | ||
| <android.support.design.widget.AppBarLayout | ||
| android:id="@+id/appBarLayout" | ||
| android:layout_width="match_parent" | ||
| android:layout_height="wrap_content"> | ||
| <android.support.v7.widget.Toolbar | ||
| android:id="@+id/toolbar" | ||
| android:layout_width="match_parent" | ||
| android:layout_height="?attr/actionBarSize" | ||
| android:background="?attr/colorPrimary" | ||
| app:layout_scrollFlags="scroll|enterAlways" /> | ||
| <android.support.design.widget.TabLayout | ||
| android:id="@+id/tabLayout" | ||
| android:layout_width="match_parent" | ||
| android:layout_height="wrap_content" | ||
| app:tabTextColor="@android:color/white" | ||
| app:tabSelectedTextColor="@android:color/white" | ||
| app:tabIndicatorColor="@android:color/white" | ||
| app:tabIndicatorHeight="6dp"/> | ||
| </android.support.design.widget.AppBarLayout> | ||
| <android.support.v4.view.ViewPager | ||
| android:id="@+id/viewPager" | ||
| android:layout_width="match_parent" | ||
| android:layout_height="match_parent" | ||
| app:layout_behavior="@string/appbar_scrolling_view_behavior"/> | ||
| <android.support.design.widget.FloatingActionButton | ||
| android:id="@+id/fabButton" | ||
| android:layout_width="wrap_content" | ||
| android:layout_height="wrap_content" | ||
| android:layout_gravity="end|bottom" | ||
| android:layout_margin="@dimen/fab_margin" | ||
| android:src="@drawable/ic_favorite_outline_white_24dp" | ||
| app:borderWidth="0dp" | ||
| app:layout_behavior="pl.michalz.hideonscrollexample.ScrollingFABBehavior"/> | ||
| </android.support.design.widget.CoordinatorLayout> |
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