【发布时间】：2015-02-28 06:06:00
【问题描述】：
我正在尝试构建示例 Android 应用程序，其中主要活动包含多个片段，包括 YouTubePlayerFragment。我的实现没有任何错误，但是当我在模拟器或手机上运行应用程序时，主要活动完全空白且无响应。如果我删除包含 YouTube 播放器的片段，该应用程序可以正常工作。
非常感谢任何帮助。
这是我的代码：
YouTubeFragment.java
package androidsample.example.com.fragments1;
import android.app.Activity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;
import com.google.android.youtube.player.YouTubeInitializationResult;
import com.google.android.youtube.player.YouTubePlayer;
import com.google.android.youtube.player.YouTubePlayerFragment;
public class YouTubeFragment extends YouTubePlayerFragment implements YouTubePlayer.OnInitializedListener {
// TODO: Rename and change types and number of parameters
public static YouTubeFragment newInstance() {
YouTubeFragment fragment = new YouTubeFragment();
return fragment;
}
private void init(){
initialize(DeveloperKey.DEVELOPER_KEY, this);
}
public YouTubeFragment() {
// Required empty public constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_you_tube, container, false);
YouTubeFragment ytf = newInstance();
ytf.init();
//inside fragment use getFragmentManager instead of getFragmentSupportManager
getFragmentManager().beginTransaction()
.add(R.id.youTubePlayer, ytf)
.commit();
return view;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
}
@Override
public void onDetach() {
super.onDetach();
}
@Override
public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer player, boolean wasRestored) {
if (!wasRestored) {
player.cueVideo("nCgQDjiotG0");
}
}
@Override
public void onInitializationFailure(YouTubePlayer.Provider provider, YouTubeInitializationResult youTubeInitializationResult) {
Toast.makeText(getActivity(), "Failured to Initialize!", Toast.LENGTH_LONG).show();
}
}
fragment_you_tube.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
tools:context="androidsample.example.com.fragments1.YouTubeFragment"
>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/youTubePlayer">
</FrameLayout>
</LinearLayout>
MainActivity.java
package androidsample.example.com.fragments1;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.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);
}
}
activity_main.xml
<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="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
<fragment
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:name="androidsample.example.com.fragments1.Frag2"
android:id="@+id/fragment"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
<fragment
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:name="androidsample.example.com.fragments1.Frag1"
android:id="@+id/fragment2"
android:layout_below="@+id/fragment"
android:layout_centerHorizontal="true"
android:layout_marginTop="56dp" />
<fragment
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:name="androidsample.example.com.fragments1.YouTubeFragment"
android:id="@+id/fragment3"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="68dp" />
</RelativeLayout>
【问题讨论】：
标签： java android android-layout android-fragments youtube-api