我目前正在开发一个带屏幕方向肖像的应用程序,我有需要全屏支持的html 5视频.我在webview中添加了一个WebChromeClient,它覆盖了一些方法.当我坚持纵向方向时,一切都工作得很好,但当我试图在全屏时将方向切换到风景时,我遇到了崩溃.任何线索？
覆盖方法:
public void onShowCustomView(View view, CustomViewCallback callback) {
super.onShowCustomView(view, callback);
if (mCustomViewContainer != null) {
callback.onCustomViewHidden();
return;
}
if(interfazWeb==null)
interfazWeb = (FragTabActivity) getActivity();
if (view instanceof FrameLayout) {
mCustomViewContainer = (FrameLayout) view;
mCustomViewCallback = callback;
interfazWeb.getCustomContentView().setVisibility(View.INVISIBLE);
interfazWeb.addContentView(mCustomViewContainer, new FrameLayout.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT, Gravity.CENTER));
interfazWeb.setBackDelegate(new BackDelegate(){
public boolean shouldOverrideBackButton() {
if(mCustomViewCallback!=null){//first calling onHideCustomView()
onHideCustomView();
return true;
}
return false;
}
});
mCustomViewContainer.bringToFront();
//interfazWeb.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}
}
@Override
public void onHideCustomView() {
// TODO Auto-generated method stub
if(interfazWeb==null)
interfazWeb = (FragTabActivity) getActivity();
if(mCustomViewContainer!=null){ …我有一个在多种模式下使用的活动，所以我必须做这样的事情：
Intent i = new Intent(MainListActivity.this,MainActivity.class);
extras.putInt("id", c.getId());
extras.putInt("mode", AREA_MODE);
i.putExtra("extras", extras);
startActivity(i);
并在onCreate：
Intent i = this.getIntent();
extras = i.getBundleExtra("extras");
if(extras!=null){
id = extras.getInt("id", -1);
mode = extras.getInt("mode", COUNTRY_MODE);
}
但是意图附加项始终为空。我错过了什么吗？有没有办法做到这一点？
编辑：出于某种原因，该getIntent()方法返回前一个Intent，在我的情况下没有额外的（主要意图）。我试图找出原因。
我正在尝试在Gallery视图上创建预览效果并遇到Gallery.getChildAt(int position)的问题,它在大多数时间返回null.它应该仅在未显示子项时返回null,这不是这里的情况,因为用户需要滚动它.有没有办法解决这个问题,还是应该改变我的做法？这是我的代码:
gallery.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent event) {
if(event.getAction()==MotionEvent.ACTION_UP){
preview_container.setVisibility(View.GONE);
}
else if(event.getDownTime()>2500){
int position = gallery.pointToPosition((int)event.getX(), (int)event.getY());
if (position!=AdapterView.INVALID_POSITION){
View child = gallery.getChildAt(position);
if(child!=null){
Bitmap tmp_bitmap = book.imageForPreview(position);
previewImg.setImageBitmap(tmp_bitmap);
FrameLayout.LayoutParams layout = new FrameLayout.LayoutParams(tmp_bitmap.getWidth()+2, tmp_bitmap.getHeight()+2,Gravity.NO_GRAVITY);
int[] coord = new int[2];
child.getLocationOnScreen(coord);
int y = MMBookReader.this.getWindowManager().getDefaultDisplay().getHeight()-(tmp_bitmap.getHeight()+view.getHeight());
int x = (int) coord[0]-(tmp_bitmap.getWidth()-child.getWidth())/2;
layout.leftMargin=x;
layout.topMargin=y;
preview_container.setVisibility(View.VISIBLE);
preview_container.setLayoutParams(layout);
previewPageCount.setText(book.getMmpages().get(position).getPosition()+"/"+book.getPages());
}
}
else
preview_container.setVisibility(View.GONE);
}
return false;
}
});
编辑:我不是要填充Gallery视图,我已经完成了这部分,并且非常了解Adapter类的使用.
编辑2:通过更改行解决:
View child = gallery.getChildAt(position);
用:
View child = …