我在RecyclerView中有一个VideoView.我想最终有一个可在Recyclerview上播放的视频列表.我决定从一个视频开始,然后继续制作多个视频.我似乎无法在Recyclerview中播放一个视频.当我在手机上启动应用程序时,我得到的只是进度条.由于某种原因,永远不会调用onPrepared函数.这是我的代码.
RecyclerActivity.java
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.view.Menu;
import android.view.MenuItem;
import android.support.v7.widget.RecyclerView;
public class RecyclerActivity extends ActionBarActivity {
private RecyclerView mRecyclerView;
private RecyclerView.Adapter mAdapter;
private RecyclerView.LayoutManager mLayoutManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_recycler);
mRecyclerView = (RecyclerView) findViewById(R.id.my_recycler_view);
mRecyclerView.setHasFixedSize(true);
mLayoutManager = new LinearLayoutManager(this);
mRecyclerView.setLayoutManager(mLayoutManager);
mAdapter = new MyAdapter(this);
mRecyclerView.setAdapter(mAdapter);
}
@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_recycler,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);
}
}
MyAdapter.java
import android.app.ProgressDialog;
import android.content.Context;
import android.media.MediaPlayer;
import android.net.Uri;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.MediaController;
import android.widget.TextView;
import android.widget.VideoView;
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
private Context context;
private ProgressDialog progressDialog;
private MediaController mediaControls;
public static class ViewHolder extends RecyclerView.ViewHolder{
public VideoView mVideoView;
public ViewHolder(View v){
super(v);
mVideoView = (VideoView) v.findViewById(R.id.video_view);
}
}
public MyAdapter(Context mContext) {
context = mContext;
mediaControls = new MediaController(context);
progressDialog = new ProgressDialog(context);
progressDialog.setTitle("Random Video");
progressDialog.setMessage("Loading...");
progressDialog.setCancelable(false);
progressDialog.show();
}
@Override
public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent,int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.my_video_view,parent,false);
ViewHolder vh = new ViewHolder(v);
return vh;
}
@Override
public void onBindViewHolder(final ViewHolder holder,final int position) {
try{
holder.mVideoView.setMediaController(mediaControls);
holder.mVideoView.setVideoURI(Uri.parse("android.resource://" + context.getPackageName() + "/" + R.raw.kitkat));
} catch (Exception e){
Log.e("Error",e.getMessage());
e.printStackTrace();
}
holder.mVideoView.requestFocus();
holder.mVideoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
progressDialog.dismiss();
holder.mVideoView.start();
}
});
}
@Override
public int getItemCount() {
return 1;
}
my_video_view.xml
<FrameLayout 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"
android:layout_gravity="center"
tools:context=".RecyclerActivity">
<VideoView
android:id="@+id/video_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"/>
</FrameLayout>
activity_recycler.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=".RecyclerActivity">
<android.support.v7.widget.RecyclerView
android:id="@+id/my_recycler_view"
android:scrollbars="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>
解决方法
我也被困在这个问题上太久了.在搜索到任何地方并仍在努力之后,我用完全相同的代码栏查看了我的旧代码库,区别一点. VideoView的编程高度是以编程方式设置的. android：layout_height =“wrap_content”似乎没有进行高度调整.
所以我使用自制的实用方法来获得屏幕宽度,并将高度设置为16：9比例. (也许只是先将你的身高和宽度设置为任意数字,看是否是问题)
public static int getScreenWidth(Context c) {
int screenWidth = 0; // this is part of the class not the method
if (screenWidth == 0) {
WindowManager wm = (WindowManager) c.getSystemService(Context.WINDOW_SERVICE);
Display display = wm.getDefaultDisplay();
Point size = new Point();
display.getSize(size);
screenWidth = size.x;
}
return screenWidth;
}
然后,只需设置VideoViews高度即可
holder.mVideoView.getLayoutParams().height = getScreenWidth(mContext) * 9 /16;
注意：我的宽度设置为match_parent,因此wrap_content也可能在那里失败.
希望这可以帮助.
