Android layout 如何避免滚动时surfaceview收缩?
在我的项目中,我有一个要求,需要有水平列表视图,项目是surfaceview的显示视频,当我滚动列表视图下一个视频必须显示时,它在所有手机和平板电脑中都可以正常工作,但在LG NEXUS 4中,当我执行滚动时,surfaceview正在缩小,请提供任何建议 谢谢 请在这里找到相关代码Android layout 如何避免滚动时surfaceview收缩?,android-layout,surfaceview,Android Layout,Surfaceview,在我的项目中,我有一个要求,需要有水平列表视图,项目是surfaceview的显示视频,当我滚动列表视图下一个视频必须显示时,它在所有手机和平板电脑中都可以正常工作,但在LG NEXUS 4中,当我执行滚动时,surfaceview正在缩小,请提供任何建议 谢谢 请在这里找到相关代码 enter code herepackage com.example.videopager; import android.app.Activity; import android.os.Bundle; impo
enter code herepackage com.example.videopager;
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.view.ViewPager;
import android.view.Menu;
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
MyPagerAdapter adapter = new MyPagerAdapter();
ViewPager myPager = (ViewPager) findViewById(R.id.myfivepanelpager);
myPager.setAdapter(adapter);
myPager.setCurrentItem(1);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
package com.example.videopager;
import android.content.Context;
import android.net.Uri;
import android.os.Parcelable;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.VideoView;
public class MyPagerAdapter extends PagerAdapter {
public VideoView mVideoView;
public int getCount() {
return 3;
}
public Object instantiateItem(View collection, int position) {
LayoutInflater inflater = (LayoutInflater) collection.getContext()
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
int resId = 0;
View view = null;
switch (position) {
case 0:
resId = R.layout.video1;
view = inflater.inflate(resId, null);
break;
case 1: // TODO : change media file path accordingly
resId = R.layout.video2;
view = inflater.inflate(resId, null);
{
try {
mVideoView = (VideoView) view
.findViewById(R.id.playback_view);
String videourl = "sdcard/Download/WakaWaka.mp4";
mVideoView.requestFocus();
mVideoView.setVideoURI(Uri.parse(videourl));
mVideoView.start();
} catch (Exception e) {
// TODO: handle exception
}
}
break;
case 2:
resId = R.layout.video3;
view = inflater.inflate(resId, null);
break;
}
((ViewPager) collection).addView(view, 0);
return view;
}
@Override
public void destroyItem(View arg0, int arg1, Object arg2) {
((ViewPager) arg0).removeView((View) arg2);
}
@Override
public Parcelable saveState() {
return null;
}
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == ((View) arg1);
}
}
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<VideoView
android:id="@+id/playback_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</FrameLayout>
在此输入code package com.example.videopager;
导入android.app.Activity;
导入android.os.Bundle;
导入android.support.v4.view.ViewPager;
导入android.view.Menu;
公共类MainActivity扩展了活动{
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
MyPagerAdapter适配器=新的MyPagerAdapter();
ViewPager myPager=(ViewPager)findViewById(R.id.myfivepanelpager);
设置适配器(适配器);
myPager.setCurrentItem(1);
}
@凌驾
公共布尔onCreateOptions菜单(菜单){
//为菜单充气;这会将项目添加到操作栏(如果存在)。
getMenuInflater().充气(R.menu.main,menu);
返回true;
}
}
包com.example.videopager;
导入android.content.Context;
导入android.net.Uri;
导入android.os.Parcelable;
导入android.support.v4.view.PagerAdapter;
导入android.support.v4.view.ViewPager;
导入android.view.LayoutInflater;
导入android.view.view;
导入android.widget.VideoView;
公共类MyPagerAdapter扩展了PagerAdapter{
公共视频视图;
public int getCount(){
返回3;
}
公共对象实例化项(视图集合,int位置){
LayoutInflater充气器=(LayoutInflater)集合。getContext()
.getSystemService(上下文布局\充气机\服务);
int剩余=0;
视图=空;
开关(位置){
案例0:
剩余=R.layout.1;
视图=充气机。充气(剩余,空);
打破
案例1://TODO:相应地更改媒体文件路径
剩余=R.layout.2;
视图=充气机。充气(剩余,空);
{
试一试{
mVideoView=(视频视图)视图
.findViewById(R.id.U视图);
String videourl=“sdcard/Download/WakaWaka.mp4”;
mVideoView.requestFocus();
mVideoView.setVideoURI(Uri.parse(videourl));
mVideoView.start();
}捕获(例外e){
//TODO:处理异常
}
}
打破
案例2:
剩余=R.layout.3;
视图=充气机。充气(剩余,空);
打破
}
((ViewPager)集合).addView(视图,0);
返回视图;
}
@凌驾
公共项目(视图arg0、整数arg1、对象arg2){
((视图寻呼机)arg0.removeView((视图)arg2);
}
@凌驾
公共包裹存储状态(){
返回null;
}
@凌驾
公共布尔值isViewFromObject(视图arg0,对象arg1){
返回arg0==((视图)arg1);
}
}