我搜索了类似的主题，关于如何防止嵌入式YouTube视频在Android上的背景上播放。但是我无法让它发挥作用。以下片段是我试过的方法，我从这里enter link description here
我尝试的第一个解决方案是
@Override
public void onResume()
{
super.onResume();
webView.onResume();
}
@Override
public void onPause()
{
super.onPause();
webView.onPause();
}
我试过的第二个解决方案是
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
if(keyCode==event.KEYCODE_BACK)
{
mWebview.loadUrl("");
mWebview.stopLoading();
finish();
}
return super.onKeyDown(keyCode, event);
}
但是他们两个都没有用。它编译了，但由于我是编码的新手，我不知道如果我在正确的地方应用代码。
任何帮助都将受到如此多的赞赏。
这是我未经修改的java脚本，在修改上述代码之前。
public class VideoDetailActivity extends ActionBarActivity {
private FavDbAdapter mDbHelper;
private Toolbar mToolbar;
String date;
String id;
String title;
String description;
String favorite;
String image;
ImageLoader imageLoader;
private TextView mPresentation;
int mImageHeight;
int latestAlpha;
ImageView mImage;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_youtube_detail);
mToolbar = (Toolbar) findViewById(R.id.toolbar_actionbar);
setSupportActionBar(mToolbar);
getSupportActionBar().setDisplayShowHomeEnabled(true);
//getSupportActionBar().setBackgroundDrawable(new ColorDrawable(Color.argb(128, 0, 0, 0)));
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
mToolbar.getBackground().setAlpha(0);
getSupportActionBar().setDisplayShowTitleEnabled(false);
mPresentation = (TextView)findViewById(R.id.youtubetitle);
TextView detailsDescription = (TextView)findViewById(R.id.youtubedescription);
TextView detailsPubdate = (TextView)findViewById(R.id.youtubeurl);
imageLoader = Helper.initializeImageLoader(VideoDetailActivity.this);
Bundle bundle = this.getIntent().getExtras();
mPresentation.setText(bundle.getString("keyTitle"));
detailsDescription.setText(bundle.getString("keyDescription"));
detailsPubdate.setText(bundle.getString("keyDate"));
title = (bundle.getString("keyTitle"));
id = (bundle.getString("keyId"));
date = (bundle.getString("keyDate"));
description = (bundle.getString("keyDescription"));
favorite = (bundle.getString("keyFavorites"));
image = (bundle.getString("keyImage"));
if ((getResources().getString(R.string.ad_visibility).equals("0"))){
// Look up the AdView as a resource and load a request.
AdView adView = (AdView) findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder().build();
adView.loadAd(adRequest);
}
mImage = (ImageView) findViewById(R.id.image);
imageLoader.displayImage(image, mImage);
mImageHeight = mImage.getLayoutParams().height;
((TrackingScrollView) findViewById(R.id.scroller)).setOnScrollChangedListener(
new TrackingScrollView.OnScrollChangedListener() {
@Override
public void onScrollChanged(TrackingScrollView source, int l, int t, int oldl, int oldt) {
handleScroll(source, t);
}
}
);
ImageButton btnPlay= (ImageButton) findViewById(R.id.playbutton);
btnPlay.bringToFront();
//Listening to button event
btnPlay.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
//Intent intent = new Intent(Intent.ACTION_VIEW);
//intent.setData(Uri.parse("http://sherdle.com/id/"+ video.getId()));
//startActivity(intent);
Intent intent = new Intent(VideoDetailActivity.this, YouTubePlayerActivity.class);
intent.putExtra(YouTubePlayerActivity.EXTRA_VIDEO_ID, id);
intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
startActivity(intent);
}
});
Button btnOpen = (Button) findViewById(R.id.openbutton);
//Listening to button event
btnOpen.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
try {
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("vnd.youtube:" + id));
startActivity(intent);
}catch (ActivityNotFoundException ex){
Intent intent=new Intent(Intent.ACTION_VIEW,
Uri.parse("http://www.youtube.com/watch?v="+id));
startActivity(intent);
}
}
});
Button btnFav = (Button) findViewById(R.id.favoritebutton);
//Listening to button event
btnFav.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
mDbHelper = new FavDbAdapter(VideoDetailActivity.this);
mDbHelper.open();
if(mDbHelper.checkEvent(title, description, date, id, "", "", "youtube")) {
// Item is new
mDbHelper.addFavorite(title, description, date, id, "", "", "youtube");
Toast toast = Toast.makeText(VideoDetailActivity.this, getResources().getString(R.string.favorite_success), Toast.LENGTH_LONG);
toast.show();
} else {
Toast toast = Toast.makeText(VideoDetailActivity.this, getResources().getString(R.string.favorite_duplicate), Toast.LENGTH_LONG);
toast.show();
}
}
});
}
private void handleScroll(TrackingScrollView source, int top) {
int scrolledImageHeight = Math.min(mImageHeight, Math.max(0, top));
ViewGroup.MarginLayoutParams imageParams = (ViewGroup.MarginLayoutParams) mImage.getLayoutParams();
int newImageHeight = mImageHeight - scrolledImageHeight;
if (imageParams.height != newImageHeight) {
// Transfer image height to margin top
imageParams.height = newImageHeight;
imageParams.topMargin = scrolledImageHeight;
// Invalidate view
mImage.setLayoutParams(imageParams);
}
final int imageheaderHeight = mImage.getHeight() - getSupportActionBar().getHeight();
//t=how far you scrolled
//ratio is from 0,0.1,0.2,...1
final float ratio = (float) Math.min(Math.max(top, 0), imageheaderHeight) / imageheaderHeight;
//setting the new alpha value from 0-255 or transparent to opaque
final int newAlpha = (int) (ratio * 255);
if (newAlpha != latestAlpha){
mToolbar.getBackground().setAlpha(newAlpha);
}
latestAlpha = newAlpha;
}
@Override
public void onPause(){
super.onPause();
mToolbar.getBackground().setAlpha(255);
}
@Override
public void onResume(){
super.onPause();
mToolbar.getBackground().setAlpha(latestAlpha);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
finish();
return true;
case R.id.share:
String applicationName = getResources().getString(R.string.app_name);
Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
String urlvalue = getResources().getString(R.string.video_share_begin);
String seenvalue = getResources().getString(R.string.video_share_middle);
String appvalue = getResources().getString(R.string.video_share_end);
//this is the text that will be shared
sendIntent.putExtra(Intent.EXTRA_TEXT, (urlvalue+"http://youtube.com/watch?"+id+seenvalue+applicationName+appvalue));
sendIntent.putExtra(Intent.EXTRA_SUBJECT, title); //you can replace title with a string of your choice
sendIntent.setType("text/plain");
startActivity(Intent.createChooser(sendIntent, getResources().getString(R.string.share_header)));
return true;
default:
return super.onOptionsItemSelected(item);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.youtube_detail_menu, menu);
return true;
}
}
答案 0 :(得分：0)
您是否尝试加载虚拟网址而不是空网址？
mWebview.loadUrl("data://dummy");
这对我有用;）