мой DialogFragment не отображается из активности, я хочу показать свой настраиваемый DialogFragment из Activity при запуске - PullRequest
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мой DialogFragment не отображается из активности, я хочу показать свой настраиваемый DialogFragment из Activity при запуске

0 голосов
/ 18 июня 2020

activity_main. xml: 

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

  <FrameLayout
      android:id="@+id/dialog_page_indicator"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      /> </LinearLayout>

PageIndicatorFragment: 

package com.example.dialogwithpageindicator;

import android.os.Bundle;

import androidx.annotation.NonNull; import
androidx.annotation.Nullable; import
androidx.core.content.ContextCompat;

import androidx.fragment.app.DialogFragment; import
androidx.fragment.app.Fragment; import
androidx.viewpager2.widget.ViewPager2;

import android.view.LayoutInflater; import android.view.View; import
android.view.ViewGroup; import android.widget.AutoCompleteTextView;
import android.widget.ImageView; import android.widget.TextView;


public class PageIndicatorFragment extends DialogFragment {

    private static final String ARG_SHOW_AS_DIALOG = "PageIndicatorFragment";
    private AutoCompleteTextView txt;
    private ImageView imageView;
    ViewPager2 viewPager;


    public static PageIndicatorFragment newInstance(boolean showAsDialog){

     PageIndicatorFragment pageIndicatorFragment=new PageIndicatorFragment();
     Bundle args=new Bundle();
     args.putBoolean(ARG_SHOW_AS_DIALOG,showAsDialog);
     pageIndicatorFragment.setArguments(args);
     return  pageIndicatorFragment;
    }

    public static PageIndicatorFragment newInstance(){
        return newInstance(true);
    }
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment

        View v= inflater.inflate(R.layout.fragment_page_indicator, container,false);
        return  v;
    }

    @Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        txt=(AutoCompleteTextView) view.findViewById(R.id.texttitle);
        imageView=(ImageView)view.findViewById(R.id.img);
        viewPager=(ViewPager2)view.findViewById(R.id.pager);
        ViewPagerLatest viewPagerLatest=new ViewPagerLatest(getActivity());
        viewPager.setAdapter(viewPagerLatest);

        viewPager.registerOnPageChangeCallback(new ViewPager2.OnPageChangeCallback() {
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
                super.onPageScrolled(position, positionOffset, positionOffsetPixels);
                if(position==0){
                    txt.setText("1st pager");
                    ContextCompat.getDrawable(getContext(),R.drawable.black);
                }
                if(position==1){
                    txt.setText("2 nd pager");
                    ContextCompat.getDrawable(getContext(),R.drawable.white);
                }
                if(position==2){
                    ContextCompat.getDrawable(getContext(),R.drawable.red);
                }
            }

            @Override
            public void onPageSelected(int position) {
                super.onPageSelected(position);
            }

            @Override
            public void onPageScrollStateChanged(int state) {
                super.onPageScrollStateChanged(state);
            }
        });

    }

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Bundle args=getArguments();
        if(args!=null){
            setShowsDialog(args.getBoolean(ARG_SHOW_AS_DIALOG, true));
        }
    }
}

fragment_page_indicator. xml: 

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="600dp"
    tools:context=".PageIndicatorFragment">

  <RelativeLayout
      android:id="@+id/title"
      android:layout_width="match_parent"
      android:layout_height="100dp">

      <AutoCompleteTextView
          android:id="@+id/texttitle"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_centerHorizontal="true"
          android:layout_marginTop="10dp"/>

  </RelativeLayout>

  <RelativeLayout
      android:id="@+id/image"
      android:layout_width="match_parent"
      android:layout_height="400dp"
      android:layout_marginTop="20dp"
      android:layout_below="@+id/title">

      <ImageView
          android:id="@+id/img"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:layout_marginStart="20dp"
          android:layout_marginEnd="20dp" />

  </RelativeLayout>

    <androidx.viewpager2.widget.ViewPager2
        android:id="@+id/pager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        />


</RelativeLayout>

Viewpager2: 

package com.example.dialogwithpageindicator;

import androidx.annotation.NonNull; import
androidx.fragment.app.Fragment; import
androidx.fragment.app.FragmentActivity; import
androidx.viewpager2.adapter.FragmentStateAdapter;

public class ViewPagerLatest extends FragmentStateAdapter {

    public static final int DIALOG_SIZE=3;

    public ViewPagerLatest(@NonNull FragmentActivity fragmentActivity) {
        super(fragmentActivity);
    }

    @NonNull
    @Override
    public Fragment createFragment(int position) {

        return new PageIndicatorFragment();
    }

    @Override
    public int getItemCount() {
        return DIALOG_SIZE;
    }
}

MainActivity: 

package com.example.dialogwithpageindicator;

import androidx.appcompat.app.AppCompatActivity; import
androidx.fragment.app.DialogFragment; import
androidx.fragment.app.FragmentManager; import
androidx.recyclerview.widget.RecyclerView; import
androidx.viewpager2.widget.ViewPager2;

import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

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

    private void showDialog() {
        FragmentManager fragmentManager=getSupportFragmentManager();
        PageIndicatorFragment pageIndicatorFragment=PageIndicatorFragment.newInstance(false);
        pageIndicatorFragment.show(fragmentManager,"viewpager2");

        //fragmentManager.beginTransaction().add(R.id.dialog_page_indicator,pageIndicatorFragment).commit();
    } 
}

activity_main. xml: 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

  <FrameLayout
      android:id="@+id/dialog_page_indicator"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      />



</LinearLayout>
...