Android：动画实现精美的弹出框（仿易信）

package com.sinatj.yixinpopupdemo; import android.graphics.drawable.ColorDrawable; import android.os.Bundle; import android.support.v7.app.ActionBarActivity; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.GridLayout; import android.widget.PopupWindow; import android.widget.Toast; /** * 仿易信动画弹出框 */ public class MainActivity extends ActionBarActivity { //用于标记页面顶端位置 private View topView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); topView = findViewById(R.id.main_top); } private PopupWindow popupWindow; private int line1DeltaY, line2DeltaY; //仿易信更多弹出框 private void showPopup() { if (popupWindow == null) { View contentView = LayoutInflater.from(this).inflate(R.layout.yixin_pop_layout, null); //点击空白区域关闭 View blankView = contentView.findViewById(R.id.yixin_more_blank); View blankView2 = contentView.findViewById(R.id.yixin_more_blank2); initItems(contentView); //测量高度 int line2Height = ViewUtils.getViewMeasuredHeight(itemViews[0]); line1DeltaY = -getActionBarHeight() - 40; line2DeltaY = line1DeltaY - line2Height; blankView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { dismissPopup(); } }); blankView2.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { dismissPopup(); } }); popupWindow = new PopupWindow(contentView, ScreenUtils.getScreenW(this), ScreenUtils.getScreenH(this)); //随便设置一个drawable作为背景 popupWindow.setBackgroundDrawable(new ColorDrawable()); } if (!popupWindow.isShowing()) { popupWindow.showAsDropDown(topView, 0, 0); for (int i = 0; i < itemViews.length; i++) { if (i < 3) { //第一行 itemViews[i].startAnimation(AnimationHelper.createPopupAnimIn(this, line1DeltaY)); } else { //第二行 itemViews[i].startAnimation(AnimationHelper.createPopupAnimIn(this, line2DeltaY)); } } popupWindow.getContentView().startAnimation(AnimationHelper.createPopupBgFadeInAnim()); } } private void dismissPopup() { if (popupWindow == null || !popupWindow.isShowing()) { return; } ViewGroup contentView = (ViewGroup) popupWindow.getContentView(); contentView.startAnimation(AnimationHelper.createPopupBgFadeOutAnim(AnimationHelper.TIME_OUT)); for (int i = 0; i < itemViews.length; i++) { if (i < 3) { //第一行 itemViews[i].startAnimation(AnimationHelper.createPopupAnimOut(this, line1DeltaY)); } else { //第二行 itemViews[i].startAnimation(AnimationHelper.createPopupAnimOut(this, line2DeltaY)); } } //动画结束时隐藏popupWindow contentView.postDelayed(new Runnable() { @Override public void run() { popupWindow.dismiss(); } }, AnimationHelper.TIME_OUT + 10); } private View[] itemViews; //初始化popupWindow上的按钮 private void initItems(View parent) { int[] viewIds = new int[]{R.id.yixin_more_item1, R.id.yixin_more_item2, R.id.yixin_more_item3, R.id.yixin_more_item4, R.id.yixin_more_item5, R.id.yixin_more_item6}; itemViews = new View[viewIds.length]; int itemWidth = ScreenUtils.getScreenW(this) / 3; OnClickImpl l = new OnClickImpl(); for (int i = 0; i < viewIds.length; i++) { int id = viewIds[i]; itemViews[i] = parent.findViewById(id); GridLayout.LayoutParams p = (GridLayout.LayoutParams) itemViews[i].getLayoutParams(); p.width = itemWidth; itemViews[i].setLayoutParams(p); itemViews[i].setOnClickListener(l); } } private class OnClickImpl implements View.OnClickListener { @Override public void onClick(View v) { final int viewId = v.getId(); //背景动画 popupWindow.getContentView().startAnimation(AnimationHelper.createPopupBgFadeOutAnim(AnimationHelper.TIME_OUT_CLICK)); //动画结束时隐藏popupWindow v.postDelayed(new Runnable() { @Override public void run() { popupWindow.dismiss(); //动画结束时响应点击事件 handleEvent(viewId); } }, AnimationHelper.TIME_OUT_CLICK + 10); //按钮动画 for (View item : itemViews) { if (item.getId() == v.getId()) { //点击的按钮，放大 item.startAnimation(AnimationHelper.createPopupItemBiggerAnim(MainActivity.this)); } else { //其它按钮，缩小 item.startAnimation(AnimationHelper.createPopupItemSmallerAnim(MainActivity.this)); } } } } //popupWindow上按钮的点击事件 private void handleEvent(int viewId) { Toast.makeText(this, "点击了按钮：" + viewId, Toast.LENGTH_SHORT).show(); } private int getActionBarHeight() { return getSupportActionBar().getHeight(); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.menu_main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { int id = item.getItemId(); if (id == R.id.action_more) { if (popupWindow == null || !popupWindow.isShowing()) { showPopup(); } else { dismissPopup(); } return true; } return super.onOptionsItemSelected(item); } //点击返回键时，如果popupWindow是显示状态，则关闭它 @Override public void onBackPressed() { if (popupWindow != null && popupWindow.isShowing()) { dismissPopup(); return; } super.onBackPressed(); } }