我的布局中有一个VideoView,在这个VideoView中,我试图播放一个垂直方向的视频。我的印象是,这是一个旨在以纵向显示的肖像视频,事情变得更加容易。男孩,我错了。
这是我的Java代码:
videoView1 = (VideoView) findViewById(R.id.videoView1);
videoView1.setVideoPath("android.resource://" + getPackageName() + "/"
+ R.raw.video);
videoView1.setOnCompletionListener(new OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
videoView1.start();
}
});
videoView1.start();
这是我的.xml视频元素(位于RelativeLayout,btw中):
<VideoView
android:id="@+id/videoView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentBottom="true"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_centerInParent="true"
android:layout_marginLeft="0dp"
android:layout_marginRight="0dp" />
我真正期待在公园里散步时遇到的最令人惊讶的事情是,无论我做什么,视频都会拉伸以填充屏幕的高度(因此layout_alignParentTop和layout_alignParentBottom显然正在工作)但该死的东西不会填满屏幕的宽度!(是的,我很沮丧)所以这个已经垂直的视频被拉伸到屏幕中间的带状结构
我在绝望的尝试中添加了marginLeft和marginRight属性,看看它是否可行但没有任何效果!大惊小怪,我删除了centerInParent属性但是没有。我甚至创建了一个自定义的VideoView,覆盖了onMeasure,但仍然没有。
我尝试以编程方式设置VideoView的LayoutParams。猜猜什么,没用。
答案 0 :(得分:1)
我创建了这个简单的VideoView子类,在保持宽高比的同时全屏显示,你可以找到最新版本的 Gist here ,但是这里& #39;是一个例子:
/**
* Subclass of VideoView to enable video scaling
* CustomAttribute: "scaleType": "normal", "centerCrop", "fill"
* <p>
* Add this stylable:
* <declare-styleable name="IntroVideoView">
* <attr name="scaleType" format="integer">
* <flag name="normal" value="0" />
* <flag name="centerCrop" value="1" />
* <flag name="fill" value="2" />
* </attr>
* </declare-styleable>
* <p>
* Created by joaquimley on 13/01/2017.
*/
public class IntroVideoView extends VideoView {
private static final int SCALE_TYPE_NORMAL = 0;
private static final int SCALE_TYPE_CENTER_CROP = 1;
private static final int SCALE_TYPE_FILL = 2;
private int mScaleType;
private int mHorizontalAspectRatioThreshold;
private int mVerticalAspectRatioThreshold;
public IntroVideoView(Context context) {
this(context, null, 0);
}
public IntroVideoView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public IntroVideoView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
TypedArray attributes = context.getTheme().obtainStyledAttributes(attrs, R.styleable.IntroVideoView, 0, 0);
mScaleType = attributes.getInt(R.styleable.IntroVideoView_scaleType, SCALE_TYPE_NORMAL);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
if (mScaleType == SCALE_TYPE_CENTER_CROP) {
applyCenterCropMeasure(widthMeasureSpec, heightMeasureSpec);
} else if (mScaleType == SCALE_TYPE_FILL) {
applyFillMeasure(widthMeasureSpec, heightMeasureSpec);
} // else default/no-op
}
@Override
public void layout(int l, int t, int r, int b) {
if (mScaleType == SCALE_TYPE_CENTER_CROP) {
applyCenterCropLayout(l, t, r, b);
} else {
super.layout(l, t, r, b);
}
}
private void applyCenterCropLayout(int left, int top, int right, int bottom) {
super.layout(left + mHorizontalAspectRatioThreshold, top + mVerticalAspectRatioThreshold, right
+ mHorizontalAspectRatioThreshold, bottom + mVerticalAspectRatioThreshold);
}
private void applyCenterCropMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int videoWidth = getMeasuredWidth();
int videoHeight = getMeasuredHeight();
int viewWidth = getDefaultSize(0, widthMeasureSpec);
int viewHeight = getDefaultSize(0, heightMeasureSpec);
mHorizontalAspectRatioThreshold = 0;
mVerticalAspectRatioThreshold = 0;
if (videoWidth == viewWidth) {
int newWidth = (int) ((float) videoWidth / videoHeight * viewHeight);
setMeasuredDimension(newWidth, viewHeight);
mHorizontalAspectRatioThreshold = -(newWidth - viewWidth) / 2;
} else {
int newHeight = (int) ((float) videoHeight / videoWidth * viewWidth);
setMeasuredDimension(viewWidth, newHeight);
mVerticalAspectRatioThreshold = -(newHeight - viewHeight) / 2;
}
}
private void applyFillMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int width = getDefaultSize(0, widthMeasureSpec);
int height = getDefaultSize(0, heightMeasureSpec);
setMeasuredDimension(width, height);
}
}
自定义属性的样式:
<resources>
<declare-styleable name="IntroVideoView">
<attr name="scaleType" format="integer">
<flag name="normal" value="0" />
<flag name="centerCrop" value="1" />
<flag name="fill" value="2" />
</attr>
</declare-styleable>
</resources>
答案 1 :(得分:0)
没关系,我是个白痴。我很确定即使是新手视频编辑也不会犯这个错误(我甚至不是新手)但是在旋转视频后,由于纵横比,在画面的侧面添加了黑条视频以及为什么视频无法填满屏幕的宽度 - 因为黑条在那里!事实证明,在拍完黑条之后,视频完美地延伸 - 就像之前一样,但黑条消失了!