我使用https://github.com/mikepenz/MaterialDrawer作为 Drawer 的库,我使用https://github.com/florent37/MaterialViewPager作为 View Pager。
我面临的问题是,当我单击抽屉中的列表项并关闭 drwawer 时,我会遇到一些滞后(某种口吃滞后),然后替换片段。我在一个片段中面对这个,它是一个 ViewPager over is a fragment。
Activity(which has NavBar):
public class mvpAct extends AppCompatActivity {
private RelativeLayout mRelativeLayout;
public static List<Model_Slots> list;
private Drawer result;
private static GetDetails gd;
public static List<Model_Daywise> todayslist_m;
public static List<Model_Daywise> todayslist_t;
public static List<Model_Daywise> todayslist_w;
public static List<Model_Daywise> todayslist_th;
public static List<Model_Daywise> todayslist_fr;
public static List<detailattlist_subcode> detail_att_all = new ArrayList<>();
public static HashMap<String, List<DetailAtten>> hash = new HashMap<>();
public static List<AttendBrief> attendBriefs = null;
public static List<Marks_Model> marks_det;
public static List<PBL_Model> lpbl;
public void setMTWTFLists(final Context ctxt) {
String mark = new SharedPrefs(ctxt).getMsg("marksdone").trim();
String att = new SharedPrefs(ctxt).getMsg("ttdone").trim();
String tt = new SharedPrefs(ctxt).getMsg("attendone").trim();
Log.d("Done Value", mark + "\t" + att + "\t" + tt);
if (mark.equals("y") && att.equals("y") && tt.equals("y")) {
Log.d("Here", "naive");
try {
new Thread(new Runnable() {
public void run() {
todayslist_m = new MTWTHgetset(ctxt, "monday").getAllCredentials();
todayslist_t = new MTWTHgetset(ctxt, "tuesday").getAllCredentials();
todayslist_w = new MTWTHgetset(ctxt, "wednesday").getAllCredentials();
todayslist_th = new MTWTHgetset(ctxt, "thursday").getAllCredentials();
todayslist_fr = new MTWTHgetset(ctxt, "friday").getAllCredentials();
}
}).start();
} catch (Exception e) {
e.printStackTrace();
}
}
}
@Override
public void onBackPressed() {
if (gd.isAdded())
getSupportFragmentManager()
.beginTransaction().remove(gd).commit();
else super.onBackPressed();
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.drawer_frame_mvp);
gd = new GetDetails();
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction().add(R.id.mvp_frame_act, gd).commit();
}
try {
list = new Slots_GetSet(this).getAllCredentials();
String classnbrs[] = new String[list.size()];
int r = 0;
for (Model_Slots ms : list) {
classnbrs[r++] = ms.getNumber().trim();
}
for (int t = 0; t < classnbrs.length; t++) {
detailattlist_subcode dr = new detailattlist_subcode();
hash.put(classnbrs[t], new IndivAttGetSet(this, " table_of_" + classnbrs[t]).getAllCredentials());
}
} catch (Exception e) {
e.printStackTrace();
}
try {
attendBriefs = new Attend_GetSet(this).getAllCredentials();
} catch (Exception e) {
e.printStackTrace();
}
try {
marks_det = new CBL_Get_Set(this).getAllCredentials();
} catch (Exception e) {
e.printStackTrace();
}
try {
lpbl = new PBL_Get_Set(this).getAllCredentials();
} catch (Exception e) {
e.printStackTrace();
lpbl = new ArrayList<>();
}
try {
setMTWTFLists(getApplication());
} catch (Exception e) {
e.printStackTrace();
}
PrimaryDrawerItem item1 = new PrimaryDrawerItem().withName("Slots").withIdentifier(1);
SecondaryDrawerItem item2 = new SecondaryDrawerItem().withName("ImageStudentLogin").withIdentifier(2);
result = new DrawerBuilder()
.withActivity(this)
.addDrawerItems(
item1,
new DividerDrawerItem(),
item2,
new SecondaryDrawerItem().withName("Setup"),
new SecondaryDrawerItem().withName("Daywise")
)
.withOnDrawerItemClickListener(new Drawer.OnDrawerItemClickListener() {
@Override
public boolean onItemClick(View view, int position, IDrawerItem drawerItem) {
displayView(position);
if (result.isDrawerOpen())
result.closeDrawer();
return true;
}
})
.build();
}
private void displayView(int position) {
Fragment fragment = null;
switch (position) {
case 0:
String s = getSharedPreferences("sp", Context.MODE_PRIVATE).getString("own", "no");
if (s.equals("already")) {
fragment = new Fragment_slots();
} else if (s.equals("yes")) {
list = new Slots_GetSet(getApplicationContext()).getAllCredentials();
fragment = new Fragment_slots();
} else if (s.equals("no")) {
fragment = new GetDetails();
}
break;
case 2:
fragment = new Photo_Stu();
break;
case 3:
fragment = new GetDetails();
break;
case 4:
fragment = MaterialVPFrag.newInstance();
break;
default:
fragment = MaterialVPFrag.newInstance();
break;
}
if (fragment != null) {
FragmentManager fm = getSupportFragmentManager();
fm.beginTransaction().replace(R.id.mvp_frame_act, fragment).commit();
} else {
Log.e("DrawerActivity", "Error creating fragment");
}
}
}
片段(我在关闭抽屉的过程中面临滞后(一种口吃滞后),之后将其替换为其他框架):
public class MaterialVPFrag extends Fragment {
private MaterialViewPager mViewPager;
public static MaterialVPFrag newInstance() {
return new MaterialVPFrag();
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.mvp_layout, container, false);
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
mViewPager = (MaterialViewPager) view.findViewById(R.id.materialViewPager);
mViewPager.getViewPager().setAdapter(new FragmentStatePagerAdapter(getChildFragmentManager()) {
@Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new RecyclerViewFragment(mvpAct.todayslist_m);
case 1:
return new RecyclerViewFragment(mvpAct.todayslist_t);
case 2:
return new RecyclerViewFragment(mvpAct.todayslist_w);
case 3:
return new RecyclerViewFragment(mvpAct.todayslist_th);
case 4:
return new RecyclerViewFragment(mvpAct.todayslist_fr);
default:
return new RecyclerViewFragment(mvpAct.todayslist_m);
}
}
@Override
public int getCount() {
return 5;
}
@Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return "Monday";
case 1:
return "Tuesday";
case 2:
return "Wednesday";
case 3:
return "Thursday";
case 4:
return "Friday";
}
return "";
}
});
mViewPager.setMaterialViewPagerListener(new MaterialViewPager.Listener() {
@Override
public HeaderDesign getHeaderDesign(int page) {
switch (page) {
case 0:
return HeaderDesign.fromColorAndDrawable(getResources().getColor(R.color.colorPrimary), getResources().getDrawable(R.drawable.myback));
case 1:
return HeaderDesign.fromColorResAndUrl(
R.color.blue,
"http://cdn1.tnwcdn.com/wp-content/blogs.dir/1/files/2014/06/wallpaper_51.jpg");
case 2:
return HeaderDesign.fromColorResAndUrl(
R.color.cyan,
"http://www.droid-life.com/wp-content/uploads/2014/10/lollipop-wallpapers10.jpg");
case 3:
return HeaderDesign.fromColorResAndUrl(
R.color.red,
"http://www.tothemobile.com/wp-content/uploads/2014/07/original.jpg");
}
return null;
}
});
mViewPager.getViewPager().setOffscreenPageLimit(mViewPager.getViewPager().getAdapter().getCount()); //it works without it don't know why!
mViewPager.getPagerTitleStrip().setViewPager(mViewPager.getViewPager());
mViewPager.getPagerTitleStrip().setBackgroundColor(Color.TRANSPARENT);
mViewPager.getPagerTitleStrip().setIndicatorColor(Color.RED);
mViewPager.getPagerTitleStrip().setTabBackground(Color.TRANSPARENT);
View logo = view.findViewById(R.id.logo_white);
if (logo != null)
logo.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mViewPager.notifyHeaderChanged();
}
});
}
}
ViewPager 的内部片段:
public class RecyclerViewFragment extends Fragment {
private RecyclerView mRecyclerView;
public static RecyclerView.Adapter mAdapter;
List<Model_Daywise> list;
public RecyclerViewFragment() {
}
public RecyclerViewFragment(List<Model_Daywise> lis) {
list = lis;
}
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_recyclerview, container, false);
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mRecyclerView = (RecyclerView) view.findViewById(R.id.recyclerView);
LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity());
layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
mRecyclerView.setLayoutManager(layoutManager);
mAdapter = new RecyclerViewMaterialAdapter(new CardAdapter_Daywise(list, getActivity()));
mRecyclerView.setAdapter(mAdapter);
MaterialViewPagerHelper.registerRecyclerView(getActivity(), mRecyclerView, null);
}
}
谢谢!