对于一个简单的应用,我遵循此代码,该应用使用videoview复制视频https://www.journaldev.com/20671/android-videoview
一切都完美!
问题是我想将此代码放入主应用程序的片段中,然后将代码从活动“转换”为片段。当我在设备上启动应用程序时,这使我进入logcat错误
12-13 17:24:16.371 17097-17097/*** E/MediaPlayer: Unable to create media player
并且视频没有开始,但是我看到一条警告,提示“无法播放视频”。
我进行了很多搜索,但没有发现对我有用的东西。
这是我的代码:
fragment_video.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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"
tools:context=".VideoFragment">
<!-- TODO: Update blank fragment layout -->
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="@string/hello_blank_fragment" />
<VideoView
android:id="@+id/videoView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true" />
</FrameLayout>
Videofragment.java
package ***;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.media.MediaPlayer;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.MediaController;
import android.widget.Toast;
import android.widget.VideoView;
import java.util.ArrayList;
import java.util.Arrays;
/**
* A simple {@link Fragment} subclass.
*/
public class VideoFragment extends Fragment {
VideoView vd;
public VideoFragment() {
// Required empty public constructor
}
VideoView videoView;
ArrayList<String> arrayList = new ArrayList<>(Arrays.asList("https://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4", "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/ElephantsDream.mp4"));
int index = 0;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v= inflater.inflate(R.layout.fragment_video, container, false);
videoView = v.findViewById(R.id.videoView);
final MediaController mediacontroller = new MediaController(getActivity());
mediacontroller.setAnchorView(videoView);
videoView.setMediaController(mediacontroller);
videoView.setVideoURI(Uri.parse(arrayList.get(index)));
videoView.requestFocus();
videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
mp.setOnVideoSizeChangedListener(new MediaPlayer.OnVideoSizeChangedListener() {
@Override
public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {
videoView.setMediaController(mediacontroller);
mediacontroller.setAnchorView(videoView);
}
});
}
});
videoView.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
Toast.makeText(getActivity().getApplicationContext(), "Video over", Toast.LENGTH_SHORT).show();
if (index++ == arrayList.size()) {
index = 0;
mp.release();
Toast.makeText(getActivity().getApplicationContext(), "Video over", Toast.LENGTH_SHORT).show();
} else {
videoView.setVideoURI(Uri.parse(arrayList.get(index)));
videoView.start();
}
}
});
videoView.setOnErrorListener(new MediaPlayer.OnErrorListener() {
@Override
public boolean onError(MediaPlayer mp, int what, int extra) {
Log.d("API123", "What " + what + " extra " + extra);
return false;
}
});
return v;
}
}
这是我想将视频投射到活动的代码(using this code like a template,因为我想将视频显示在滑块中)。
package ***;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import com.stephentuso.welcome.TitlePage;
import com.stephentuso.welcome.WelcomeActivity;
import com.stephentuso.welcome.WelcomeConfiguration;
import com.stephentuso.welcome.FragmentWelcomePage;
public class MainActivity extends WelcomeActivity {
@Override
protected WelcomeConfiguration configuration() {
return new WelcomeConfiguration.Builder(this)
.defaultBackgroundColor(R.color.colorPrimary)
.page(new FragmentWelcomePage() {
@Override
protected android.support.v4.app.Fragment fragment() {
return new VideoFragment();
}
}.background(R.color.colorPrimary))
.page(new TitlePage(R.drawable.lorem1, getString(R.string.label_lorem_1))
)
.page(new TitlePage(R.drawable.lorem2, getString(R.string.label_lorem_2))
)
.page(new TitlePage(R.drawable.lorem3, getString(R.string.label_lorem_3))
)
.swipeToDismiss(true)
.build();
}
}
我不知道问题可能在哪里。 预先谢谢你。