Можно ли (данные) связать MediaItem с VideoView, используя текущие пакеты AndroidX? - PullRequest
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Можно ли (данные) связать MediaItem с VideoView, используя текущие пакеты AndroidX?

0 голосов
/ 21 января 2019

Привет,

У меня проблемы с реализацией VideoView.Я знаю, что есть этот метод наблюдателя, но я бы хотел использовать метод привязки данных.Так есть ли какой-нибудь XML-атрибут для привязки моего Viewmodel.MediaItem?

Имейте в виду, что в Androidx происходят эти изменения (это довольно запутанно, я знаю это как новичок): AndroidX-ReleaseNotes
Снимок экрана

Файлы

Мой XML-файл 

<?xml version="1.0" encoding="utf-8"?>
<layout 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">
<data>
    <variable
        name="viewModel"
        type="edu.abc.appname.tryNerror.VideoplayerViewModel"
        />
    <variable
        name="presenter"
        type="edu.abc.appname.tryNerror.VideoplayerPresenter"
        />

</data>

<!--<androidx.coordinatorlayout.widget.CoordinatorLayout-->
    <!--android:id="@+id/coordinatorLayout"-->
    <!--android:layout_width="match_parent"-->
    <!--android:layout_height="match_parent">-->

    <!--<com.google.android.material.appbar.CollapsingToolbarLayout-->
        <!--android:layout_width="match_parent"-->
        <!--android:layout_height="match_parent">-->

        <!--<androidx.appcompat.widget.Toolbar-->
            <!--android:id="@+id/toolbar"-->
            <!--android:layout_width="match_parent"-->
            <!--android:layout_height="?attr/actionBarSize"-->
            <!--android:background="?attr/colorPrimary" />-->

    <!--</com.google.android.material.appbar.CollapsingToolbarLayout>-->

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".tryNerror.VideoPlayerView">

        <androidx.media2.widget.VideoView
            android:id="@+id/video"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="8dp"
            android:layout_marginEnd="8dp"
            android:layout_marginBottom="8dp"
            app:layout_constraintBottom_toTopOf="@+id/guideline"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.5"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent">

        </androidx.media2.widget.VideoView>

        <com.google.android.material.button.MaterialButton
            android:id="@+id/load_video_button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:layout_marginBottom="8dp"
            android:onClick="loadVideo"
            android:text="@string/load_video"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toStartOf="@+id/film_video_button"
            app:layout_constraintHorizontal_bias="0.5"
            app:layout_constraintHorizontal_chainStyle="spread"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="@+id/guideline" />

        <com.google.android.material.button.MaterialButton
            android:id="@+id/film_video_button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:layout_marginBottom="8dp"
            android:onClick="filmVideo"
            android:text="@string/film_video"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.5"
            app:layout_constraintStart_toEndOf="@+id/load_video_button"
            app:layout_constraintTop_toTopOf="@+id/guideline" />

        <androidx.constraintlayout.widget.Guideline
            android:id="@+id/guideline"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            app:layout_constraintGuide_begin="570dp" />


    </androidx.constraintlayout.widget.ConstraintLayout>
<!--</androidx.coordinatorlayout.widget.CoordinatorLayout>-->

Моя активность 

package edu.abc.appname.tryNerror;

import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;

import com.google.android.material.button.MaterialButton;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.view.ViewCompat;
import androidx.databinding.DataBindingUtil;
import androidx.lifecycle.ViewModel;
import androidx.lifecycle.ViewModelProviders;
import androidx.media2.MediaController;
import androidx.media2.MediaItem;
import androidx.media2.MediaSession;
import androidx.media2.widget.VideoView;
import androidx.media2.UriMediaItem;

import edu.abc.appname.Model.Video;
import edu.abc.appname.R;
import edu.abc.appname.View.ViewObservsViewModel;
import edu.abc.appname.databinding.VideoplayerBinding;

public class VideoPlayerView extends AppCompatActivity {

    private VideoView videoView;
    private VideoplayerViewModel viewModel;
    private MediaSession session;
    private MaterialButton loadVideoButton;

    static final int REQUEST_VIDEO_CAPTURE = 1;
    static final int REQUEST_VIDEO_GET = 2;


    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        VideoplayerBinding binding = DataBindingUtil.setContentView(this,
                R.layout.videoplayer);
        this.videoView = new VideoView(this);
//        presenter = new VideoplayerPresenter(this);
//        binding.setPresenter(presenter);
        viewModel = ViewModelProviders.of(this).get(VideoplayerViewModel.class);
        binding.setViewModel(viewModel);
        binding.setLifecycleOwner(this);
        //setSupportActionBar(binding.toolbar);
    }

    private void dispatchTakeVideoIntent() {
        Intent takeVideoIntent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
        if (takeVideoIntent.resolveActivity(getPackageManager()) != null) {
            startActivityForResult(takeVideoIntent, REQUEST_VIDEO_CAPTURE);
        }
    }

    private void dispatchLoadVideoIdent() {
        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
        intent.setType("video/*");
        if (intent.resolveActivity(getPackageManager()) != null) {
            startActivityForResult(intent, REQUEST_VIDEO_GET);
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
        MediaItem video;
        Uri videoUri = null;
        if (requestCode == REQUEST_VIDEO_CAPTURE && resultCode == RESULT_OK) {
            videoUri = intent.getData();
        } else if (requestCode == REQUEST_VIDEO_GET && resultCode == RESULT_OK) {
            videoUri = intent.getData();
        }
        if(videoUri != null) {
            video = new UriMediaItem.Builder(this, videoUri).build();
            viewModel.setVideo(new Video(video));
        }
    }

    public void loadVideo(View v) {
        dispatchLoadVideoIdent();
    }

    public void filmVideo(View v) {
        dispatchTakeVideoIntent();
    }

    public void play() {
        //session = new MediaSession.Builder(this).setId(this.videoView.getSessionToken()).build();
    }
}

My ViewModel 

package edu.abc.appname.tryNerror;

import androidx.lifecycle.LiveData;
import androidx.lifecycle.MutableLiveData;
import androidx.lifecycle.ViewModel;
import edu.abc.appname.Model.Video;

public class VideoplayerViewModel extends ViewModel {

    private MutableLiveData<Video> video;

    public void setVideo(Video video) {
        if (this.video == null){
            this.video = new MutableLiveData<Video>();
        }
        this.video.setValue(video);
    }

    public MutableLiveData<Video> getVideo() {
        return this.video;
    }

    public Video getVideoasVideo() {
        return this.video.getValue();
    }
}

My Video.class 

package edu.abc.appname.Model;

import androidx.media2.MediaItem;

public class Video implements Playable {

    //private SessionState sessionState;

    private MediaItem mediaItem;

    public Video(MediaItem mediaItem) {
        this.mediaItem = mediaItem;
    }

    public MediaItem getMediaItem() {
        return this.mediaItem;
    }

}
...