Question

我在YouTubePlayerSupportFragment上奋斗了3天，试图让它在滑动片段中运行。它现在显示此错误，我尝试了其他方式并获得NullPointerException。有没有办法将YouTubePlayerSupportFragment放入滑动片段？

java.lang.UnsupportedOperationException：无法在顶部添加视图玩家在com.google.android.youtube.player.YouTubePlayerView.a（未知资源）在com.google.android.youtube.player.YouTubePlayerView.addView（未知资源）在 android.support.v4.app.FragmentManagerImpl.moveToState（FragmentManager.java:1083）在 android.support.v4.app.FragmentManagerImpl.moveToState（FragmentManager.java:1252）在 android.support.v4.app.BackStackRecord.run（BackStackRecord.java:742）在 android.support.v4.app.FragmentManagerImpl.execPendingActions（FragmentManager.java:1617）在 android.support.v4.app.FragmentManagerImpl.executePendingTransactions（FragmentManager.java:570）在 android.support.v4.app.FragmentStatePagerAdapter.finishUpdate（FragmentStatePagerAdapter.java:164）在android.support.v4.view.ViewPager.populate（ViewPager.java:1177）在android.support.v4.view.ViewPager.populate（ViewPager.java:1025）在android.support.v4.view.ViewPager.onMeasure（ViewPager.java:1545）在android.view.View.measure（View.java）在android.view.ViewGroup.measureChildWithMargins（ViewGroup.java）在 android.widget.LinearLayout.measureChildBeforeLayout（LinearLayout.java）在android.widget.LinearLayout.measureVertical（LinearLayout.java）在android.widget.LinearLayout.onMeasure（LinearLayout.java）在 android.support.design.widget.AppBarLayout.onMeasure（AppBarLayout.java:199）在android.view.View.measure（View.java）在android.view.ViewGroup.measureChildWithMargins（ViewGroup.java）在 android.support.design.widget.CoordinatorLayout.onMeasureChild（CoordinatorLayout.java:668）在 android.support.design.widget.CoordinatorLayout.onMeasure（CoordinatorLayout.java:735）在android.view.View.measure（View.java）在 android.support.v4.widget.DrawerLayout.onMeasure（DrawerLayout.java:1075）在android.view.View.measure（View.java）在android.view.ViewGroup.measureChildWithMargins（ViewGroup.java）在android.widget.FrameLayout.onMeasure（FrameLayout.java）在 android.support.v7.widget.ContentFrameLayout.onMeasure（ContentFrameLayout.java:135）在android.view.View.measure（View.java）在android.view.ViewGroup.measureChildWithMargins（ViewGroup.java）在 android.widget.LinearLayout.measureChildBeforeLayout（LinearLayout.java）在android.widget.LinearLayout.measureVertical（LinearLayout.java）在android.widget.LinearLayout.onMeasure（LinearLayout.java）在android.view.View.measure（View.java）在android.view.ViewGroup.measureChildWithMargins（ViewGroup.java）在android.widget.FrameLayout.onMeasure（FrameLayout.java）在android.view.View.measure（View.java）在android.view.ViewGroup.measureChildWithMargins（ViewGroup.java）在 android.widget.LinearLayout.measureChildBeforeLayout（LinearLayout.java）在android.widget.LinearLayout.measureVertical（LinearLayout.java）在android.widget.LinearLayout.onMeasure（LinearLayout.java）在android.view.View.measure（View.java）在android.view.ViewGroup.measureChildWithMargins（ViewGroup.java）在android.widget.FrameLayout.onMeasure（FrameLayout.java）在 com.android.internal.policy.PhoneWindow $ DecorView.onMeasure（PhoneWindow.java）在android.view.View.measure（View.java）在android.view.ViewRootImpl.performMeasure（ViewRootImpl.java）在android.view.ViewRootImpl.measureHierarchy（ViewRootImpl.java）在android.view.ViewRootImpl.performTraversals（ViewRootImpl.java）在android.view.ViewRootImpl.doTraversal（ViewRootImpl.java）在android.view.ViewRootImpl $ TraversalRunnable.run（ViewRootImpl.java）在android.view.Choreographer $ CallbackRecord.run（Choreographer.java）在android.view.Choreographer.doCallbacks（Choreographer.java）在android.view.Choreographer.doFrame（Choreographer.java）在 android.view.Choreographer $ FrameDisplayEventReceiver.run（Choreographer.java）在android.os.Handler.handleCallback（Handler.java）在android.os.Handler.dispatchMessage（Handler.java）在android.os.Looper.loop（Looper.java）在android.app.ActivityThread.main（ActivityThread.java） at java.lang.reflect.Method.invoke（Native Method）

MainActivity.java：

import android.os.Bundle;
import android.support.design.widget.NavigationView;
import android.support.design.widget.TabLayout;
import android.support.v4.view.GravityCompat;
import android.support.v4.view.ViewPager;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;

public class MainActivity extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);
        tabLayout.addTab(tabLayout.newTab().setText("Tab 1"));
        tabLayout.addTab(tabLayout.newTab().setText("Tab 2"));
        tabLayout.addTab(tabLayout.newTab().setText("Tab 3"));
        tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);

        final ViewPager viewPager = (ViewPager) findViewById(R.id.pager);
        final PagerAdapter adapter = new PagerAdapter
                (getSupportFragmentManager(), tabLayout.getTabCount());
        viewPager.setAdapter(adapter);
        viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
        tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
            @Override
            public void onTabSelected(TabLayout.Tab tab) {
                viewPager.setCurrentItem(tab.getPosition());
            }

            @Override
            public void onTabUnselected(TabLayout.Tab tab) {

            }

            @Override
            public void onTabReselected(TabLayout.Tab tab) {

            }
        });



        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
        drawer.setDrawerListener(toggle);
        toggle.syncState();

        NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);
    }

    @Override
    public void onBackPressed() {
        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        if (drawer.isDrawerOpen(GravityCompat.START)) {
            drawer.closeDrawer(GravityCompat.START);
        } else {
            super.onBackPressed();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    @SuppressWarnings("StatementWithEmptyBody")
    @Override
    public boolean onNavigationItemSelected(MenuItem item) {
        // Handle navigation view item clicks here.
        int id = item.getItemId();

        if (id == R.id.nav_camera) {
            // Handle the camera action
        } else if (id == R.id.nav_gallery) {

        } else if (id == R.id.nav_slideshow) {

        } else if (id == R.id.nav_manage) {

        } else if (id == R.id.nav_share) {

        } else if (id == R.id.nav_send) {

        }

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }
}

PagerAdapter.java：

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;

public class PagerAdapter extends FragmentStatePagerAdapter  {
    int mNumOfTabs;

    public PagerAdapter(FragmentManager fm, int NumOfTabs) {
        super(fm);
        this.mNumOfTabs = NumOfTabs;
    }

    @Override
    public Fragment getItem(int position) {

        switch (position) {
            case 0:
                TabFragment1 tab1 = new TabFragment1();
                return tab1;
            case 1:
                TabFragment2 tab2 = new TabFragment2();
                return tab2;
            case 2:
                TabFragment3 tab3 = new TabFragment3();
                return tab3;
            default:
                return null;
        }
    }

    @Override
    public int getCount() {
        return mNumOfTabs;
    }
}

TabFragment1.java：

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.google.android.youtube.player.YouTubeInitializationResult;
import com.google.android.youtube.player.YouTubePlayer;
import com.google.android.youtube.player.YouTubePlayerSupportFragment;

public class TabFragment1 extends Fragment  {
    private String currentVideoID = "nCgQDjiotG0";
    public static final String API_KEY = "XXX";
    private YouTubePlayer YPlayer;




    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        View rootView = inflater.inflate(R.layout.tab_fragment_1, container, false);

        YouTubePlayerSupportFragment youTubePlayerFragment = YouTubePlayerSupportFragment.newInstance();
        FragmentTransaction transaction = getFragmentManager().beginTransaction();
        transaction.add(R.id.youTubePlayer, youTubePlayerFragment).commit();

        youTubePlayerFragment.initialize(API_KEY, new YouTubePlayer.OnInitializedListener() {

            @Override
            public void onInitializationSuccess(YouTubePlayer.Provider arg0, YouTubePlayer youTubePlayer, boolean b) {
                if (!b) {
                    YPlayer = youTubePlayer;
                    YPlayer.setFullscreen(true);
                    YPlayer.loadVideo("2zNSgSzhBfM");
                    YPlayer.play();
                }
            }

            @Override
            public void onInitializationFailure(YouTubePlayer.Provider arg0, YouTubeInitializationResult arg1) {
                // TODO Auto-generated method stub

            }
        });

        return rootView;
    }

tab_fragment_1.xml：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <fragment
        android:name="com.google.android.youtube.player.YouTubePlayerSupportFragment"
        android:id="@+id/youTubePlayer"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>


</RelativeLayout>

Answer 1

首先代替

   <fragment
      android:name="com.google.android.youtube.player.YouTubePlayerSupportFragment"
        android:id="@+id/youTubePlayer"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

使用FrameLayout

 <FrameLayout
        android:id="@+id/frame_fragment"
        android:layout_width="match_parent"
        android:layout_height="200dp"></FrameLayout>

然后在初始化后使用

FragmentTransaction transaction = getFragmentManager().beginTransaction();
        transaction.replace(R.id.frame_fragment, youTubePlayerFragment);
        transaction.commit();

Answer 2

尝试

transaction.replace(R.id.youTubePlayer, youTubePlayerFragment).commit();

在你的onCreateView中或直接使用

直接检索片段（你的布局中有它）

YouTubePlayerSupportFragment youTubePlayerFragment = getFragmentManager().findFragmentById(R.id.youTubePlayer);

YouTubePlayerSupportFragment无法在播放器

2 个答案: