DiscView:

一个仿网易云音乐播放界面旋转唱片的自定义View

效果图:

设置滑动手势

//MainActivity
discView.setOnTouchListener(new View.OnTouchListener() {
 @Override
 public boolean onTouch(View v, MotionEvent event) {
 discView.onTouch(v,event);
 return true;
 }
 });
//DiscView
@Override
 public boolean onTouch(View v, MotionEvent event) {
 switch (event.getAction()) {
 case MotionEvent.ACTION_DOWN:
 startX = event.getX();
 break;
 case MotionEvent.ACTION_UP:
 if (event.getX() - startX > width / 10) {
 Log.e(TAG, "right swipe");
 prev();
 }
 if (event.getX() < startX && (startX - event.getX()) > width / 10) {
 Log.e(TAG, "left swipe");
 next();
 }
 if (Math.abs(1.0d * (event.getX() - startX)) < width / 100) {
 onClick(v);
 }
 break;
 }
 return false;
 }

设置切换时的图片

List<Integer> picList = new ArrayList<>();
 picList.add(R.drawable.pic);
 picList.add(R.drawable.pic_1);
 picList.add(R.drawable.pic_2);
 picList.add(R.drawable.pic_3);
 picList.add(R.drawable.pic_4);
 picList.add(R.drawable.pic_5);
 discView.setUriList(picList);

super.onMeasure(widthMeasureSpec, heightMeasureSpec);
 int widthSpecMode = MeasureSpec.getMode(widthMeasureSpec);
 int widthSpecSize = MeasureSpec.getSize(widthMeasureSpec);
 int heightSpecMode = MeasureSpec.getMode(heightMeasureSpec);
 int heightSpecSize = MeasureSpec.getSize(heightMeasureSpec);
 if (widthSpecMode == MeasureSpec.AT_MOST && heightSpecMode == MeasureSpec.AT_MOST) {
 setMeasuredDimension(400, 500);
 } else if (widthSpecMode == MeasureSpec.AT_MOST) {
 setMeasuredDimension(heightSpecSize * 4 / 5, heightSpecSize);
 } else if (heightSpecMode == MeasureSpec.AT_MOST) {
 setMeasuredDimension(widthSpecSize, widthSpecSize * 5 / 4);
 } else {
 if (widthSpecSize * 1.25 != heightSpecSize) {
 setMeasuredDimension(widthSpecSize, widthSpecSize * 5 / 4);
 }
 }

 Bitmap bmp = BitmapFactory.decodeStream(getContentResolver().openInputStream(data.getData()));
 discView.setPic(bmp);