android - 如何在 viewflipper 中播放视频

Question

我有一个 viewflipper，其中有视频和图像。第一次运行时一切正常。在显示最后一个 child 并重复 View 后，在这种情况下，视频不会播放，黑屏仍然存在时间。提前致谢。

我的代码

    @Override
           protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        super.onCreate(savedInstanceState);
        setContentView(R.layout.kiosk_mode);
        mSelectedPressoId=PreferenceConnector.readString(KioskModeActivity.this,         PreferenceConnector.SELECTED_PRESSO_ID, "");
        bindControl();
        fetchSlidesFromDb();
    }
public void bindControl(){
    mFlipper=(ViewFlipper)findViewById(R.id.viewflipper);
    mParentView=(FrameLayout)findViewById(R.id.parent_background);
    mKioskModeIcon=(ImageView)findViewById(R.id.kiosk_mode_icon);
    mExitBar=(LinearLayout)findViewById(R.id.exit_bar);
    detector = new GestureDetector(new SwipeGestureDetector());
    mCounter=new MyCounter(10000, 1000);
    mActivePointers = new SparseArray<PointF>();
    mKioskModeIcon.setOnClickListener(this);
    mHomeIcon=(ImageView)findViewById(R.id.homeIcon); 
    mHomeIcon.setOnClickListener(this);
    mCommonMethod=new CommonMethod(getApplicationContext());
    position=new ArrayList<String>();
    mTransitionTime=PreferenceConnector.readString(getApplicationContext(), PreferenceConnector.TRANSITION_TIME, "");
    Log.v("transition time from prefrence isss",mTransitionTime+">>>");

    if(mTransitionTime.equalsIgnoreCase("")){
    mFlipper.setFlipInterval(10000);
    }else{
        int mTransitionTimeInMills=Integer.parseInt(mTransitionTime)*1000; 
        mFlipper.setFlipInterval(mTransitionTimeInMills);
    }

    mFlipper.setOutAnimation(AnimationUtils.loadAnimation(
            getBaseContext(), R.anim.push_left_out));

    mFlipper.setInAnimation(AnimationUtils.loadAnimation(    
            getBaseContext(), R.anim.push_left_in));

    mFlipper.getInAnimation().setAnimationListener(new Animation.AnimationListener() {
          public void onAnimationStart(Animation animation) {}
          public void onAnimationRepeat(Animation animation) {

              Log.d("new view is ",">>>>>>>>>>>>>>>");
          }
          public void onAnimationEnd(Animation animation) {

              mVideoPosition=mFlipper.getDisplayedChild();
              Log.d("new view is flipped",mVideoPosition+">>>>>>>>>>>>>>>"+mPressoPathList.get(mVideoPosition));
              if(mSlideTypeList.get(mVideoPosition).equalsIgnoreCase("video")){
                  Log.d("onside iffffff",myVideoView+">>>>>");
                  myVideoView.start();
              }
          }
       });
    mFlipper.startFlipping();

    mFlipper.setOnTouchListener(new OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            // TODO Auto-generated method stub

              detector.onTouchEvent(event);   
             return true;
        }
    });
}
public void fetchSlidesFromDb(){
    PresentationDatabase databaseClass = new PresentationDatabase(getApplicationContext(), DatabaseUtil.PresenationTable.DATABASE_NAME, null, DatabaseUtil.PresenationTable.DATABASE_VERSION);
    SQLiteDatabase db = databaseClass.getReadableDatabase();
    mPressoPathList=new ArrayList<String>();
    mSlideTypeList=new ArrayList<String>();

    String where = DatabaseUtil.PresenationTable.PRESENTATION_ID + "="
            +"'"+mSelectedPressoId+"'";
    Cursor mCursor=db.query(DatabaseUtil.PresenationTable.TABLE_NAME, null, where,
            null, null, null, null);
    Log.e("cursor size isssssss",mCursor.getCount()+">>");
    if(mCursor.getCount()>0){
        mCursor.moveToFirst();
        do{
            String slide_content_path=mCursor.getString(mCursor.getColumnIndex(DatabaseUtil.PresenationTable.CONTENT_LOCAL_PATH));
            String mSlideType=mCursor.getString(mCursor.getColumnIndex(DatabaseUtil.PresenationTable.SLIDE_TYPE));
            if(!mSlideType.equalsIgnoreCase("pdf")){
               mPressoPathList.add(slide_content_path);
               mSlideTypeList.add(mSlideType);
            }
        }while(mCursor.moveToNext());


         }

     Log.d("slide path issssssss",mPressoPathList+"");
     setFlipperImage(mSlideTypeList, mPressoPathList);
     mCursor.close();
     db.close();

}
//create view to be put in view flipper
private void setFlipperImage(ArrayList<String>mSlideType,ArrayList<String>mSlidePath) {

    int size=mSlideType.size();
    for(int i=0;i<size;i++){
        if(mSlideType.get(i).equalsIgnoreCase("image")){

            ImageView image = new ImageView(getApplicationContext());
            LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
            image.setLayoutParams(layoutParams);
            image.setScaleType(ScaleType.FIT_XY);
            //image.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
            BitmapFactory.Options options=new BitmapFactory.Options();
            options.inSampleSize = 2;
            bmp = BitmapFactory.decodeFile(mSlidePath.get(i),options);
            image.setImageBitmap(bmp);
            image.setTag(i);
            position.add(i+"");
            mFlipper.addView(image);

    }else{
         myVideoView = new VideoView(this);
         myVideoView.setVideoPath(mSlidePath.get(i));
         Log.e("my video path isssss",mSlidePath.get(i));
         myVideoView.requestFocus();
         myVideoView.setLayoutParams(new LayoutParams(
                 LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
        // l.setBackgroundColor(Color.BLACK);
         myVideoView.setKeepScreenOn(true);
         mFlipper.addView(myVideoView);
         myVideoView.start();
         myVideoView.seekTo(500);


         myVideoView.setOnPreparedListener(new OnPreparedListener() { 
             @Override
             public void onPrepared(MediaPlayer mp) {
                 mFlipper.stopFlipping();
             }
         });
         myVideoView.setOnCompletionListener(new OnCompletionListener() {   

            @Override
            public void onCompletion(MediaPlayer mp) {
                // TODO Auto-generated method stub
                Log.d("inside oncomplete listner",">>>>>");
                myVideoView.stopPlayback();
                mVideoPosition=mVideoPosition+1;
                mFlipper.setDisplayedChild(mVideoPosition);
                mFlipper.startFlipping();
                myVideoView.seekTo(500);

            }
        });
    }

    //
}

}
@Override
public void onBackPressed() {
    // TODO Auto-generated method stub
    //do nothing*
}

Answer 1

我通过添加

解决了这个问题

myVideoView.start();

进入事件监听器

myVideoView.setOnPreparedListener(new OnPreparedListener() { 
    @Override
    public void onPrepared(MediaPlayer mp) {
             mFlipper.stopFlipping();
             myVideoView.start();
     }
});