如何显示在Android上CardView视频？ [英] How to display a video in a CardView on Android?

问题描述

我是相当新的Andr​​oid和我最近增加了一个 CardView 来我的应用程序来显示一些文本框和图像，这工作得很好。

I'm fairly new to Android and I recently added a CardView to my app to display a few text boxes and images, which work just fine.

然而，当我试图显示视频卡是空的。有人可以帮助我理解我在做什么错了？

However, when I tried to display a video the card remains empty. Can someone help me understand what am I doing wrong?

我所定义的的ImageView 像这样：

<android.support.v7.widget.CardView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginBottom="@dimen/card_margin"
                android:layout_marginLeft="@dimen/card_margin"
                android:layout_marginRight="@dimen/card_margin">
                <LinearLayout
                    style="@style/Widget.CardContent"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content">
                        <VideoView
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content"
                            android:layout_gravity="center_horizontal"
                            android:id="@+id/step1Vid" />
                        <MediaController
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:id="@+id/mediaController2"
                            android:layout_below="@id/step1Vid" />

                        <ImageView
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content"
                            android:id="@+id/step_image"/>
               </LinearLayout>
            </android.support.v7.widget.CardView>

起初我试图设置在相关活动的OnCreate像这样的视频：

initially i tried to set the video in the onCreate of the relevant Activity like so:

VideoView video = (VideoView) findViewById(R.id.step1Vid);
    Uri vidUri = Uri.parse(SOME_MP4_URL);
    video.setVideoURI(vidUri);
    MediaController mCon = new MediaController(getApplicationContext());
    mCon.setAnchorView(video);
    video.setMediaController(mCon);

这不工作不知道为什么。于是从相关活动我用的AsyncTask 来得到一个URL的视频。由于使用的UI变化onProgressMethod内同一code这也不能工作。

That didn't work not sure why. so Then from the relevant Activity I used AsyncTask to get a video from a URL. used the same code inside the onProgressMethod because of the UI changes which didn't work either.

我想AP preciate任何意见，我可以得到的。

I would appreciate any advice I can get.

推荐答案

当我给的，而不是用WRAP_CONTENT属性的LinearLayout一个固定大小的问题得到解决。

problem was solved when i gave the LinearLayout a fixed size instead of using the "wrap_content" attribute.

这篇关于如何显示在Android上CardView视频？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！