Android仿网易新闻图片详情下滑隐藏效果示例代码

前言

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效果图：

实例代码

public class InfoTextView extends AutoRelativeLayout {
private Context context;
private int lastY;
private int offY;
private int MIN_HEIGHT = 600;
public InfoTextView(Context context) {
 super(context);
 this.context = context;
 init();
}

public InfoTextView(Context context, AttributeSet attrs) {
 super(context, attrs);
 this.context = context;
 init();
}

public InfoTextView(Context context, AttributeSet attrs, int defStyle) {
 super(context, attrs, defStyle);
 this.context = context;
 init();
}

private void init() {
 View root = inflate(context, R.layout.ad_detail_text_layout, this);
}

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
 return true;
}

@Override
public boolean onTouchEvent(MotionEvent event) {
 return true;
}
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
 boolean isConsume = false;
 int y = (int) ev.getY();
 switch (ev.getAction()) {
 case MotionEvent.ACTION_DOWN:
  isConsume = true;
  lastY = y;
  break;
 case MotionEvent.ACTION_MOVE:
  offY = y - lastY;
  int[] screenSize = ScreenUtils.getScreenSize(context, false);
  if (getTop() >= (screenSize[1] - MIN_HEIGHT)) {

break;

}

//  Log.d("yzk", "y " + y + " getTop " + getTop()

//   + " getBottom " + getBottom()

//   + " screenSize[1] - getMeasuredHeight " + (screenSize[1] - getMeasuredHeight())

//   + " screenSize[1] - MIN_HEIGHT " + (screenSize[1] - MIN_HEIGHT));

if ((offY > 0 && getTop() < screenSize[1] - MIN_HEIGHT)

|| offY < 0 && getTop() > screenSize[1] - getMeasuredHeight()) {

layout(getLeft(), getTop() + offY,

getRight(), getBottom() + offY);
  }
  break;
 case MotionEvent.ACTION_UP:
  break;
 }
 return isConsume || super.dispatchTouchEvent(ev);
}
}

来源：https://www.jianshu.com/p/edc68bf5f9f5