The list view in the clip does not scroll
•
Android
There is a table content in my activity, which has three tabs. Each tab content has a fragment, and they are named onefragment, twofragment and thirdfragment. Now in my twofragment class, this class can handle the second tab content, which has a listview control
Question now: I don't know why the list control doesn't scroll!
This is my activity Code: call it foot_ Recipe class
package com.example.android.dezcook;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.database.sqlException;
import android.database.sqlite.sqliteDatabase;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
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 android.util.Log;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class Foot_recipe extends AppCompatActivity {
/*Layout Properties define*/
private Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;
private Food send_info;
private int[] tabIcons = {
R.drawable.tab_details_imagealbum,
R.drawable.tab_details_cookie,
R.drawable.tab_details_camera
};
/*End layout propeties DeFinition*/
/*Start Logic deFinition from here*/
/*End Logic DeFinition*/
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_foot_recipe);
//get data from intent sended from cardview
String txtID = "";
Intent intent = getIntent();
// Bundle bundle=intent.getExtras();
// if(bundle!=null)txtID=bundle.getString("txtid");
Food food = (Food) intent.getParcelableExtra("food_obj");
send_info = food;
//tool bar customization
TextView toolbar_title = (TextView) findViewById(R.id.toolbar_title);
toolbar_title.setText(food.getTxtName());
toolbarCustomization();
//Tab customization
tabCustomization();
//Customize floatting button
ActionButton_fav(food.getTxtid());
}
public void ActionButton_fav(final int id) {
FloatingActionButton fav = (FloatingActionButton) findViewById(R.id.fav_btn_heart);
fav.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (addDBfav(id) > 0)
Snackbar.make(v, "added to fav list", Snackbar.LENGTH_SHORT).show();
else
Snackbar.make(v, "not in fav list", Snackbar.LENGTH_SHORT).show();
}
});
}
public Food sendFrag_info() {
return send_info;
}
/*Layout Section
* All Layout code about food details are down side this page
* */
private void toolbarCustomization() {
toolbar = (Toolbar) findViewById(R.id.foodrestoolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
private void tabCustomization() {
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
setupTabIcons();
tabLayout.getTabAt(2).select();
}
private void setupTabIcons() {
tabLayout.getTabAt(0).setIcon(tabIcons[0]);
tabLayout.getTabAt(1).setIcon(tabIcons[1]);
tabLayout.getTabAt(2).setIcon(tabIcons[2]);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFragment(new OneFragment(), "desc");
adapter.addFragment(new TwoFragment(), "material");
adapter.addFragment(new ThreeFragment(), "pic");
viewPager.setAdapter(adapter);
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
public int addDBfav(int id) {
sqliteDatabase sqliteDatabase;
DbHelper myDbHelper = new DbHelper(this);
/* try{
myDbHelper.createDatabase();
}catch (IOException e)
{
throw new Error("unable to create database");
}*/
/* myDbHelper.openDataBase();
sqliteDatabase = myDbHelper.getWritableDatabase();
Cursor cursor = sqliteDatabase.rawQuery("UPDATE food SET fav=1 WHERE food_id ==" + id + ";", null);
Log.i("successfully:", Integer.toString(cursor.getCount()));
return 1;*/
myDbHelper.openDataBase();
ContentValues values=new ContentValues();
values.put("fav","1");
myDbHelper.openDataBase();
sqliteDatabase sqliteDatabase1=myDbHelper.getMyDataBase();
int part= sqliteDatabase1.update("food",values,"food_id="+id,null);
myDbHelper.close();
Log.i("update","successful"+part);
return part;
}
}
This is my twofragment class code:
Package com.example.android.dezcook;
import android.content.Context;
import android.net.Uri;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.listadapter;
import android.widget.ListView;
import android.widget.TextView;
import com.example.android.dezcook.R;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.List;
public class TwoFragment extends Fragment {
public TwoFragment()
{
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.fragment_two, container, false);
Foot_recipe foot_recipe=(Foot_recipe)getActivity();
Food food=foot_recipe.sendFrag_info();
/* ListView listView=(ListView)v.findViewById(R.id.show_items);
listView.setAdapter();
*/ String[] arr=food.getItems().split("،");
Log.i("LogArr",arr[0]);
// ArrayAdapter adapter = new ArrayAdapter<String>(getActivity(),R.layout.list_items_frag, arr);
ListView listView = (ListView) v.findViewById(R.id.show_items);
listView.setAdapter(new details_list_adapter(getActivity(),arr));
return v;
}
}
And twofragment XML code:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context="com.example.android.dezcook.TwoFragment"
android:background="@drawable/gradient_background"
>
<!-- TODO: Update blank fragment layout -->
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/show_items"
android:divider="@color/colorPrimaryDark"
/>
</LinearLayout>
Finally, it calls foot_ Activity of recipe XML code:
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:background="@drawable/xml_header_background"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="@+id/foodrestoolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="@drawable/xml_header_background"
app:layout_scrollFlags="scroll|enterAlways"
android:layout_gravity="right"
app:title=" "
android:gravity="right"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="foot specail"
android:layout_gravity="right"
android:textSize="25dp"
android:textStyle="bold"
android:layout_marginRight="10dp"
android:textColor="#ffffff"
android:id="@+id/toolbar_title" />
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="@+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabMode="fixed"
app:tabIndicatorColor="@color/cardview_dark_background"
app:tabSelectedTextColor="@color/cardview_dark_background"
app:tabGravity="fill"/>
</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:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/floating_btn_heart"
android:layout_gravity="bottom|right"
android:background="@color/colorPrimary"
android:layout_margin="20dp"
android:id="@+id/fav_btn_heart"
/>
</android.support.design.widget.CoordinatorLayout>
resolvent:
Try adding the following code:
listView.setOnTouchListener(new ListView.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
int action = event.getAction();
switch (action) {
case MotionEvent.ACTION_DOWN:
events.
v.getParent().requestDisallowInterceptTouchEvent(true);
break;
case MotionEvent.ACTION_UP:
events.
v.getParent().requestDisallowInterceptTouchEvent(false);
break;
}
v.onTouchEvent(event);
return true;
}
});
Note: Android does not support nested scrolling, so you need to disable "parent" touch management and pass events to the view
I hope this helps
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