5

Samsung SPen のAirView機能にPopupWindow基づいてプレビューを表示します

しかし、問題は、SurfaceViewが作成されておらず、SurfaceHolder.Callbackメソッドが呼び出されていないことです。

サーフェスがまったく作成されていないため、ポップアップが表示されるとサーフェス領域が透明になります。

SurfaceView は作成されず、透過的です:

ここに画像の説明を入力

HoverPreview:

public class HoverPreview extends LinearLayout implements View.OnHoverListener, SurfaceHolder.Callback {
    private static final String TAG = "HoverPreview";
    private SurfaceHolder mHolder = null;
    View mAnchorView = null;
    String videoPath;
    int position;
    private boolean IsMediaPlayerReady = false;
    private MediaPlayer mMediaPlayer;
    private SurfaceView mSurfaceView;
    Context context;

    public HoverPreview(Context context, String videoPath, int position) {
        super(context);
        this.videoPath = videoPath;
        this.position = position;
        setupLayout(context);
    }

    public HoverPreview(Context context, AttributeSet attrs) {
        super(context, attrs);
        setupLayout(context);
    }

    public HoverPreview(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        setupLayout(context);
    }

    private void setupLayout(Context context) {
        this.context = context;
        LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        inflater.inflate(R.layout.media_browser_hover, this);
    }

    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();
    }

    @Override
    public void surfaceCreated(SurfaceHolder surfaceHolder) {
        Log.d(TAG, "HoverSurface created");

        final Surface surface = surfaceHolder.getSurface();
        if (surface == null) return;
        if (!surface.isValid()) return;

        mHolder = surfaceHolder;

        mMediaPlayer = new MediaPlayer();

        try {
            mMediaPlayer.setDataSource(videoPath);
        } catch (IOException e) {
            e.printStackTrace();
        }

        mMediaPlayer.setDisplay(mHolder);
        mAnchorView.setTag(mMediaPlayer);

        mMediaPlayer.setOnVideoSizeChangedListener(new MediaPlayer.OnVideoSizeChangedListener() {
            @Override
            public void onVideoSizeChanged(MediaPlayer mediaPlayer, int i, int i2) {
                mHolder.setFixedSize(i, i2);
            }
        });

        mMediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
            @Override
            public void onPrepared(MediaPlayer mediaPlayer) {
                Log.d(TAG, "MediaPlayer preview is prepared");
                IsMediaPlayerReady = true;

                if (mMediaPlayer != null && IsMediaPlayerReady) {
                    if (position > 0)
                        mMediaPlayer.seekTo(position);
                    mMediaPlayer.start();
                }
            }
        });

        Log.d(TAG, "MediaPlayer is created");
        try {
            mMediaPlayer.prepare();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i2, int i3) {
        Log.d(TAG, "HoverSurface changed");
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
        Log.d(TAG, "HoverSurface destroyed");
        if (mMediaPlayer != null) {
            mMediaPlayer.stop();
            mMediaPlayer.release();
            //thumbnailImageView.setTag(null);
        }
    }

    public void setAnchorView(View view) {
        mAnchorView = view;
    }

    @Override
    public boolean onHover(View view, MotionEvent motionEvent) {
        try {
            if (motionEvent.getAction() == MotionEvent.ACTION_HOVER_ENTER) {
                Log.d(TAG, "ACTION_HOVER_ENTER");

                mSurfaceView = (SurfaceView) findViewById(R.id.media_browser_hoverSurfaceView);

                mHolder = mSurfaceView.getHolder();
                if (mHolder != null) {
                    mHolder.addCallback(this);
                }

            } else if (motionEvent.getAction() == MotionEvent.ACTION_HOVER_EXIT) {
                Log.d(TAG, "ACTION_HOVER_EXIT");
                if (mAnchorView.getTag() != null) {
                    MediaPlayer mMediaPlayer = (MediaPlayer) mAnchorView.getTag();
                    mMediaPlayer.stop();
                    mMediaPlayer.release();
                    mAnchorView.setTag(null);
                }
            }
        } catch (Exception e) {
            Log.e(TAG, e.getMessage() + Utils.toString(e.getStackTrace()));
        }
        return false;
    }
}

プレビューを表示するコード:

final PopupWindow popupWindow = new PopupWindow(context);
final HoverPreview hoverPreview = new HoverPreview(context, videoPath, 0);
hoverPreview.setAnchorView(thumbnailImageView);
thumbnailImageView.setOnHoverListener(new View.OnHoverListener() {
    @Override
    public boolean onHover(View view, MotionEvent motionEvent) {
        hoverPreview.onHover(view, motionEvent);
        if (motionEvent.getAction() == MotionEvent.ACTION_HOVER_ENTER) {
            popupWindow.setContentView(hoverPreview);
            popupWindow.setWidth(600);
            popupWindow.setHeight(400);
            popupWindow.showAtLocation(thumbnailImageView, ToolHoverPopup.Gravity.NO_GRAVITY, 10, 10);
            Log.d(TAG, "Manual Hover Enter");
        } else if (motionEvent.getAction() == MotionEvent.ACTION_HOVER_EXIT) {
            Log.d(TAG, "Manual Hover Exit");
            if (popupWindow != null)
                popupWindow.dismiss();
        }
        return true;
});
4

1 に答える 1

4

これが私の完全な実用的なソリューションです：

SPen ライブラリのクラスからいくつかのコードを借りToolHoverPopupました。また、この特別なポップアップをカスタマイズして、実際のホバリングが発生するまで何も作成または膨張しないようにして、リストでそのようなプレビューを有効にするためのリソースを消費しないようにしました。

プレビューを にアタッチする必要があるWindowため、通常は によって行われる基本的なポジショニング ジョブをすべて管理する必要があるPopupWindowため、 への依存関係を完全に削除しPopupWindow、HoverPreviewクラスが完全に機能してすべてのジョブを管理するようになりました。また、ホバー検出の遅延をミリ秒単位で決定する機能もあります。

スクリーンショット (SurfaceView が作成されます)

ここに画像の説明を入力

使用法: (レイアウトにSurfaceViewはリソースが大量に含まれているため、手動でイベントをトリガーして、実際のホバーが実行されたときにのみ実際のサーフェスの作成が実行されるようにします。また、これにより、必要になる前にonHoverオブジェクトを作成しません)HoverPreview

        thumbnailImageView.setOnHoverListener(new View.OnHoverListener() {
            @Override
            public boolean onHover(View view, MotionEvent motionEvent) {
                HoverPreview hoverPreview;
                if (thumbnailImageView.getTag() == null) {
                    hoverPreview = new HoverPreview(context, getActivity().getWindow(), videoPath, 0);
                    hoverPreview.setHoverDetectTime(1000);
                    thumbnailImageView.setTag(hoverPreview);
                } else
                    hoverPreview = (HoverPreview) thumbnailImageView.getTag();

                hoverPreview.onHover(null, motionEvent);

                if (motionEvent.getAction() == MotionEvent.ACTION_HOVER_EXIT)
                    thumbnailImageView.setTag(null);

                return true;
            }
        });

HoverPreview:

public class HoverPreview extends LinearLayout implements View.OnHoverListener, SurfaceHolder.Callback {

    private static final int MSG_SHOW_POPUP = 1;

    private static final int MSG_DISMISS_POPUP = 2;

    private static final int HOVER_DETECT_TIME_MS = 300;

    private static final int POPUP_TIMEOUT_MS = 60 * 1000;

    protected int mHoverDetectTimeMS;

    private static final String TAG = "HoverPreview";
    private SurfaceHolder mHolder = null;
    String videoPath;
    int position;
    private boolean IsMediaPlayerReady = false;
    private MediaPlayer mMediaPlayer;
    private SurfaceView mSurfaceView;
    Context context;
    private HoverPopupHandler mHandler;
    Window window;

    public HoverPreview(Context context, Window window, String videoPath, int position) {
        super(context);
        this.mHoverDetectTimeMS = HOVER_DETECT_TIME_MS;
        this.videoPath = videoPath;
        this.position = position;
        this.window = window;
        setupLayout(context);
    }

    private void setupLayout(Context context) {
        this.context = context;

        LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        rootView = inflater.inflate(R.layout.media_browser_hover, this);

        mSurfaceView = (SurfaceView) findViewById(R.id.media_browser_hoverSurfaceView);
    }

    View rootView;

    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();
    }

    @Override
    public void surfaceCreated(SurfaceHolder surfaceHolder) {
        Log.d(TAG, "HoverSurface created");

        final Surface surface = surfaceHolder.getSurface();
        if (surface == null) return;
        if (!surface.isValid()) return;

        mHolder = surfaceHolder;

        mMediaPlayer = new MediaPlayer();

        try {
            mMediaPlayer.setDataSource(videoPath);
        } catch (IOException e) {
            e.printStackTrace();
            return;
        }

        mMediaPlayer.setDisplay(mHolder);

        mMediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
            @Override
            public void onPrepared(MediaPlayer mediaPlayer) {
                Log.d(TAG, "MediaPlayer preview is prepared");
                IsMediaPlayerReady = true;

                int videoWidth = mMediaPlayer.getVideoWidth();
                int videoHeight = mMediaPlayer.getVideoHeight();
                Point size = new Point();
                int screenHeight = 0;
                int screenWidth = 0;
                Display display = getDisplay();

                display.getSize(size);
                screenWidth = size.x - (350 + 30); // margin + padding
                screenHeight = size.y;

                FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) mSurfaceView.getLayoutParams();

                lp.width = screenWidth;
                lp.height = (int) (((float) videoHeight / (float) videoWidth) * (float) screenWidth);
                mSurfaceView.setLayoutParams(lp);

                if (mMediaPlayer != null && IsMediaPlayerReady) {
                    if (position > 0)
                        mMediaPlayer.seekTo(position);
                    mMediaPlayer.start();
                    findViewById(R.id.media_browser_hoverRootFrameLayout).setVisibility(VISIBLE);
                }
            }
        });

        Log.d(TAG, "MediaPlayer is created");
        try {
            mMediaPlayer.prepare();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i2, int i3) {
        Log.d(TAG, "HoverSurface changed");
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
        Log.d(TAG, "HoverSurface destroyed");
        try {
            if (mMediaPlayer != null) {
                mMediaPlayer.stop();
                mMediaPlayer.release();
            }
        } catch (Exception e) {

        }
    }

    @Override
    public boolean onHover(View view, MotionEvent motionEvent) {
        try {
            if (motionEvent.getAction() == MotionEvent.ACTION_HOVER_ENTER) {
                Log.d(TAG, "ACTION_HOVER_ENTER");
                show(); // checks the timing
            } else if (motionEvent.getAction() == MotionEvent.ACTION_HOVER_EXIT) {
                Log.d(TAG, "ACTION_HOVER_EXIT");
                dismiss();
            }
        } catch (Exception e) {
            Log.e(TAG, e.getMessage() + Utils.toString(e.getStackTrace()));
        }
        return false;
    }

    /**
     * Sets the time that detecting hovering.
     *
     * @param ms The time, milliseconds
     */
    public void setHoverDetectTime(int ms) {
        mHoverDetectTimeMS = ms;
    }

    public void dismiss() {
        dismissPopup();
    }

    private void dismissPopup() {
        // remove pending message and dismiss popup
        getMyHandler().removeMessages(MSG_SHOW_POPUP);
        getMyHandler().removeMessages(MSG_DISMISS_POPUP);

        try {
            if (mMediaPlayer != null) {
                mMediaPlayer.stop();
                mMediaPlayer.release();
            }
        } catch (Exception e) {

        }

        if (getParent() != null)
            ((ViewGroup) getParent()).removeView(this);
    }

    private Handler getMyHandler() {
        if (mHandler == null)
            mHandler = new HoverPopupHandler();
        return mHandler;
    }

    public void show() {
        // send message to show.
        if (getMyHandler().hasMessages(MSG_SHOW_POPUP)) {
            return;
            // getHandler().removeMessages(MSG_SHOW_POPUP);
        }
        getMyHandler().sendEmptyMessageDelayed(MSG_SHOW_POPUP, mHoverDetectTimeMS);
    }

    private void showPopup() {
        if (getParent() == null) {
            final WindowManager.LayoutParams params = new WindowManager.LayoutParams(
                    WindowManager.LayoutParams.MATCH_PARENT,
                    WindowManager.LayoutParams.MATCH_PARENT,
                    WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
                    WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
                    PixelFormat.TRANSLUCENT);

            params.gravity = Gravity.CENTER_VERTICAL;
            params.x = 350;

            window.addContentView(this, params);
        }

        mHolder = mSurfaceView.getHolder();
        if (mHolder != null) {
            mHolder.addCallback(this);
        }
    }

    ;

    private class HoverPopupHandler extends Handler {

        @Override
        public void handleMessage(Message msg) {

//            if (DEBUG)
//                android.util.Log.e(TAG, "handleMessage : " + ((msg.what == MSG_SHOW_POPUP) ? "SHOW" : "DISMISS"));

            switch (msg.what) {
                case MSG_SHOW_POPUP:
                    showPopup();
                    sendEmptyMessageDelayed(MSG_DISMISS_POPUP, POPUP_TIMEOUT_MS);
                    break;
                case MSG_DISMISS_POPUP:
                    dismissPopup();
                    break;
            }
        }
    }
}
于 2013-12-24T14:07:08.477 に答える