android仿今日头条个人中心页面
16lz
2021-01-23
android仿今日头条个人中心页面
效果图
实现步骤：
自定义ScrollView，添加一个反弹的动画
代码：
package com.example.administrator.gerenzhongxin;import android.animation.Animator;import android.animation.AnimatorListenerAdapter;import android.animation.ObjectAnimator;import android.content.Context;import android.os.Build;import android.support.annotation.RequiresApi;import android.util.AttributeSet;import android.view.MotionEvent;import android.view.View;import android.view.animation.BounceInterpolator;import android.widget.ScrollView;/** * Created At 2018/1/2. * * @author King * @email qwe272938225ms@163.com */public class FlowScrollView extends ScrollView { private View contentView; private final float scalCount = 0.5f;//阻尼系数 private float downY;//点击时的y点 private ObjectAnimator objectAnimator;//动画 private float distanceY;//移动距离 private boolean isMoveing = false;//动画是正在进行// private int scrollHeight = 0;//当内容不足以全屏时，内容随手指可滑动距离 public FlowScrollView(Context context) { super(context); } public FlowScrollView(Context context, AttributeSet attrs) { super(context, attrs); } public FlowScrollView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); } @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP) public FlowScrollView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { super(context, attrs, defStyleAttr, defStyleRes); } @Override protected void onFinishInflate() {//视图加载完成 super.onFinishInflate(); if (getChildCount() > 0) { contentView = getChildAt(0);// scrollHeight = contentView.getHeight(); } } @Override public boolean onInterceptTouchEvent(MotionEvent ev) { return super.onInterceptTouchEvent(ev); } @Override public boolean onTouchEvent(MotionEvent ev) { if (isMoveing) { return false; } switch (ev.getAction()) { case MotionEvent.ACTION_DOWN: downY = ev.getY(); break; case MotionEvent.ACTION_MOVE: float deltY = ev.getY() - downY; if (Math.abs(deltY) > 10 &&(getScrollY() == 0 || (getScrollY()+getHeight())==contentView.getHeight())) { contentView.setY(contentView.getY() + deltY * scalCount); distanceY += deltY * scalCount; } downY = ev.getY(); break; case MotionEvent.ACTION_UP: if (Math.abs(distanceY) > 0) { objectAnimator = ObjectAnimator.ofFloat(contentView, "translationY", distanceY, -(float) contentView.getTop()); objectAnimator.setInterpolator(new BounceInterpolator()); objectAnimator.addListener(new AnimatorListenerAdapter() { @Override public void onAnimationStart(Animator animation) { super.onAnimationStart(animation); isMoveing = true; } @Override public void onAnimationEnd(Animator animation) { super.onAnimationEnd(animation); distanceY = 0; isMoveing = false; } }); objectAnimator.setDuration(500); objectAnimator.start(); } break; default: break; } return super.onTouchEvent(ev); } @Override protected void onScrollChanged(int l, int t, int oldl, int oldt) { super.onScrollChanged(l, t, oldl, oldt); }}然后在布局里面替换这个类的地址：
<com.example.administrator.gerenzhongxin.FlowScrollView android:layout_width="match_parent" android:background="#333" android:layout_height="match_parent"> "match_parent" android:orientation="vertical" android:layout_height="wrap_content"> "match_parent" android:src="@mipmap/ic_launcher" android:layout_height="wrap_content" /> "match_parent" android:text="hello" android:textColor="#fff" android:gravity="center" android:textSize="40sp" android:layout_height="wrap_content" /> com.example.administrator.gerenzhongxin.FlowScrollView>#源码
更多相关文章
- 动画 anim
- android 上下抽屉拖拽+动画完美实现
- 让Android不播放关机动画，而是显示一个关机进度条的方法
- Android Animation Interpolator - Android 动画插值器分析
- Android AnimationDrawable动画实例
- Android 修改开机动画（bootanimation）
- android中国风笔记源码，金鱼游动动画源码等
- Android属性动画，从源码的角度分析