2

我想要实现的是这些：

  1. 当单击 recyclerView 中的一个项目时，应该显示详细信息活动，从我的手指触摸屏幕的点开始。

  2. 当我触摸向上箭头按钮或后退按钮时，详细信息活动应以圆形显示结束，并在我的手指最初触摸屏幕的位置停止。

我的代码：

MyRecyclerViewHolder

private OnGridItemClickedListener itemClickedListener

    public MyRecyclerViewHolder(View itemView,  OnGridItemClickedListener itemClickedListener) {
        super(itemView);
        ButterKnife.bind(this, itemView);
        this.itemClickedListener = itemClickedListener;
        rippleView.setOnTouchListener(touchListener);
    }


    private View.OnTouchListener touchListener = new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            if (event.getAction() == MotionEvent.ACTION_UP) {
                itemClickedListener.onItemClick(getAdapterPosition(), null, (int)event.getY(), (int)event.getX());
            }
            return true;
        }
    };

我的片段

// Removed irrelevant codes
 MyAdapter adapter = new MyAdapter(itemsList, true);
 recyclerView.setLayoutManager(new GridAutoFitLayoutManager(getActivity(), MyConvert.dpToPx(150, getActivity())));
 recyclerView.setAdapter(adapter);
 recyclerView.setHasFixedSize(true);

 adapter.setOnGridItemClickedListener(new OnGridItemClickedListener() {
     @Override
     public void onItemClick(int position, String stringId, int y, int x) {
         launchMyDetailsActivity(position, y, x);
     }
 });

 private void launchMyDetailsActivity(int index, int y, int x) {
     Intent intent = new Intent(getActivity(), MyDetailsActivity.class);
     intent.putExtra(Keys.EXTRA_Y, y);
     intent.putExtra(Keys.EXTRA_X, x);
     startActivity(intent);
 }

我的详细信息活动

// Removed irrelevant codes

 @Override
 protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.activity_grid_details);
     ButterKnife.bind(this);
     setSupportActionBar(toolbar);
     getSupportActionBar().setDisplayHomeAsUpEnabled(true);
     setViewListeners();
     startEnterTransition();
 }

 private void startEnterTransition () {
     coordinatorLayout.post(new Runnable() {
         @Override
         public void run() {
             int x = getIntent().getIntExtra(Keys.EXTRA_X, 0);
             int y = getIntent().getIntExtra(Keys.EXTRA_Y, 0);

             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP && x != 0 && y != 0) {
                 // get the final radius for the clipping circle
                 int finalRadius = Math.max(coordinatorLayout.getWidth(), coordinatorLayout.getHeight()) / 2;

                 // create the animator for this view (the start radius is zero)
                 Animator anim = ViewAnimationUtils.createCircularReveal(coordinatorLayout, x, y, 0, finalRadius);

                 // make the view visible and start the animation
                 coordinatorLayout.setVisibility(View.VISIBLE);
                 anim.start();
             }
         }
     });
 }

 private void startExitTransition () {
     int x = getIntent().getIntExtra(Keys.EXTRA_X, 0);
     int y = getIntent().getIntExtra(Keys.EXTRA_Y, 0);

     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP && x != 0 && y != 0) {
         int initialRadius = coordinatorLayout.getWidth() / 2;

         Animator anim = ViewAnimationUtils.createCircularReveal(coordinatorLayout, x, y, initialRadius, 0);

         anim.addListener(new AnimatorListenerAdapter() {
             @Override
             public void onAnimationEnd(Animator animation) {
                 super.onAnimationEnd(animation);
                 coordinatorLayout.setVisibility(View.INVISIBLE);
                 supportFinishAfterTransition();
             }
         });

         anim.start();

     } else {
         supportFinishAfterTransition();
     }
 }

 @Override
 public void onBackPressed() {
     startExitTransition();
 }

 @Override
 public boolean onOptionsItemSelected(MenuItem item) {
     switch (item.getItemId()) {

         case android.R.id.home:
             startExitTransition();
             return true;
     }

     return super.onOptionsItemSelected(item);
 }

问题

  1. 显示动画从屏幕的左上角开始，靠近汉堡图标，即使我单击的项目靠近屏幕底部。退出动画也是如此，它停在屏幕的左上角

  2. 退出动画结束后，屏幕闪烁，并不总是发生，但确实发生了。

已实施的解决方案

我已经在 viewHolder:itemView.getX()和itemView.getY(),itemView.getRight()和itemView.getTop(). 这些似乎解决了上面的第一个问题，但动画的进入和退出点总是与 recyclerView 项目的点不同。

请问我该如何解决上面的数字和2个问题？

4

0 回答 0