我怎樣才能知道在Android中滑動viewPager

在我的應用程序中，我有viewPager，進入這viewPager我顯示視頻，我將此視頻設置爲ViewPagerAdaper。
我想要在右側向左滑動時停止視頻！
我怎樣才能知道在Android中滑動viewPager

我下面寫代碼在adapter作秀視頻：

@Override 
public Object instantiateItem(ViewGroup container, final int position) { 
    View view = this.inflater.inflate(R.layout.row_coming_soon, container, false); 
    ButterKnife.bind(this, view); 
    final ImageView comingSoonCover = (ImageView) view.findViewById(R.id.row_comingSoonCoverImg); 
    final ImageView comingSoonPlayBtn = (ImageView) view.findViewById(R.id.row_comingSoonPlayBtn); 
    final VideoView comingSoonVideoPlayer = (VideoView) view.findViewById(R.id.row_comingSoon_videoPlayer); 
    final RelativeLayout comingSoonImagesLay = (RelativeLayout) view.findViewById(R.id.row_comingSoonImagesLay); 

    comingSoonPlayBtn.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      comingSoonVideoPlayer.setVideoURI(Uri.parse(model.get(position).getTrailerDirectLink())); 
      comingSoonVideoPlayer.start(); 
      comingSoonImagesLay.setVisibility(View.GONE); 
     } 
    });

我要當刷卡viewPager，如果comingSoonVideoPlayer.isPlaying();，停止它和輕掃viewPager。

我該怎麼辦？

來源

2017-06-01 Jan Deep

你可以嘗試創建適配器站和星的方法，例如

private void start(int position) { 
    if(comingSoonVideoPlayer != null { 
     comingSoonVideoPlayer.setVideoURI(Uri.parse(model.get(position).getTrailerDirectLink())); 
     comingSoonVideoPlayer.start(); 
    } 
} 

private void stop() { 
    if(comingSoonVideoPlayer != null) { 
     comingSoonVideoPlayer.stop(); 
    } 
}

然後在片段

mViewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() { 
     @Override 
     public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { 
      mViewPager.getAdapter().stop(); 
      mViewPager.getAdapter().start(position);     
     } 

     @Override 
     public void onPageSelected(int position) { 
     } 

     @Override 
     public void onPageScrollStateChanged(int state) { 

     } 
});

編輯：

讓comingSoonVideoPlayer爲班級字段：

final VideoView comingSoonVideoPlayer; 


    @Override 
    public Object instantiateItem(ViewGroup container, final int position) { 
     View view = this.inflater.inflate(R.layout.row_coming_soon, container, false); 
     ButterKnife.bind(this, view); 
     final ImageView comingSoonCover = (ImageView) view.findViewById(R.id.row_comingSoonCoverImg); 
     final ImageView comingSoonPlayBtn = (ImageView) view.findViewById(R.id.row_comingSoonPlayBtn); 
     comingSoonVideoPlayer = (VideoView) view.findViewById(R.id.row_comingSoon_videoPlayer); 
     final RelativeLayout comingSoonImagesLay = (RelativeLayout) view.findViewById(R.id.row_comingSoonImagesLay); 

     comingSoonPlayBtn.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 
       comingSoonVideoPlayer.setVideoURI(Uri.parse(model.get(position).getTrailerDirectLink())); 
       comingSoonVideoPlayer.start(); 
       comingSoonImagesLay.setVisibility(View.GONE); 
      } 
     }); 
    }

希望這會有所幫助。

對不起，我的英語。

來源

2017-06-01 14:57:12 Cochi

謝謝我的朋友，我想嘗試你的代碼，但我不能！因爲我應該將** VideoView **初始化爲'instantiateItem'，比如：'VideoView'comingSoonVideoPlayer =（VideoView）view.findViewById（R.id.coming_pay_videoPlayer）;'。當初始化** VideoView **全球使用其他方面，不工作我videoView到我的應用程序！我該如何解決它？爲了使用您的代碼，我應該初始化** VideoView **全局，但我無法在全局初始化這個！爲什麼？ –

請在郵編＃1中查看我的代碼以瞭解我的意思。請幫助我的朋友，請 –

當您嘗試將'comingSoonVideoPlayer'作爲班級字段時，出現什麼錯誤？ – Cochi

我覺得這個聽衆可以HALP你

mViewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() { 
     @Override 
     public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { 

     } 

     @Override 
     public void onPageSelected(int position) { 

     } 

     @Override 
     public void onPageScrollStateChanged(int state) { 

     } 
    });

現在它已過時。必須使用替代addOnPageChangeListener/removeOnPageChangeListener

來源

2017-06-01 14:33:24

我應該把你的代碼寫入我的片段，但我把視頻控制到適配器中！我怎麼能把它放入你的代碼？你能幫我，給我發代碼嗎？請 –

Somethins like this onPageSelected {mAdapter.stopOtherPages（position）;} –

找不到'stopOtherPages'。請給我這個代碼。我想當ssipe viewPager，停止視頻 –

我怎樣才能知道在Android中滑動viewPager

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