android 仿IOS滑动删除动画

package pzl.swipemenu; import android.animation.Animator; import android.animation.ObjectAnimator; import android.graphics.Color; import android.graphics.drawable.ColorDrawable; import android.os.Handler; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.BaseAdapter; import android.widget.LinearLayout; import android.widget.TextView; import com.baoyz.swipemenulistview.SwipeMenu; import com.baoyz.swipemenulistview.SwipeMenuCreator; import com.baoyz.swipemenulistview.SwipeMenuItem; import com.baoyz.swipemenulistview.SwipeMenuListView; import java.util.ArrayList; import java.util.List; public class MainActivity extends AppCompatActivity { private SwipeMenuListView swipeMenuListView; private MyAdapter adapter; private List<String> data; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); swipeMenuListView= (SwipeMenuListView) findViewById(R.id.listView); initData(); adapter=new MyAdapter(); swipeMenuListView.setAdapter(adapter); SwipeMenuCreator creator = new SwipeMenuCreator() { @Override public void create(SwipeMenu menu) { // create "open" item SwipeMenuItem openItem = new SwipeMenuItem( getApplicationContext()); // set item background openItem.setBackground(new ColorDrawable(Color.rgb(0xC9, 0xC9, 0xCE))); // set item width openItem.setWidth(150); // set item title openItem.setTitle("Open"); // set item title fontsize openItem.setTitleSize(18); // set item title font color openItem.setTitleColor(Color.WHITE); // add to menu menu.addMenuItem(openItem); // create "delete" item SwipeMenuItem deleteItem = new SwipeMenuItem( getApplicationContext()); // set item background deleteItem.setBackground(new ColorDrawable(Color.rgb(0xF9, 0x3F, 0x25))); // set item width deleteItem.setWidth(150); deleteItem.setTitle("Delete"); deleteItem.setTitleSize(18); deleteItem.setTitleColor(Color.WHITE); menu.addMenuItem(deleteItem); } }; // set creator swipeMenuListView.setMenuCreator(creator); swipeMenuListView.setOnMenuItemClickListener(new SwipeMenuListView.OnMenuItemClickListener() { @Override public boolean onMenuItemClick(int position, SwipeMenu menu, int index) { switch (index) { case 0: // open break; case 1: // delete startDeleteAnimator(position); break; } // false : close the menu; true : not close the menu return false; } }); // Left swipeMenuListView.setSwipeDirection(SwipeMenuListView.DIRECTION_LEFT); } private void startDeleteAnimator(final int position) { View view = swipeMenuListView.getChildAt(position - swipeMenuListView.getFirstVisiblePosition()); ObjectAnimator.ofFloat(view, "alpha", 1, 0).setDuration(20).start(); if (swipeMenuListView.getFirstVisiblePosition() != 0 && swipeMenuListView.getLastVisiblePosition() == swipeMenuListView.getCount() - 1) { //向下滚 for (int i = position - 1 - swipeMenuListView.getFirstVisiblePosition(); i >= 0; i--) { View itemView = swipeMenuListView.getChildAt(i); ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(itemView, "translationY", view.getHeight()).setDuration(200); objectAnimator.start(); if (i == 0) { objectAnimator.addListener(new Animator.AnimatorListener() { @Override public void onAnimationStart(Animator animation) { } @Override public void onAnimationEnd(Animator animation) { data.remove(position); adapter.notifyDataSetChanged(); // 动画结束后，恢复ListView所有子View的属性 for (int i = 0; i < swipeMenuListView.getChildCount(); ++i) { View v = swipeMenuListView.getChildAt(i); v.setAlpha(1f); v.setTranslationY(0); } } @Override public void onAnimationCancel(Animator animation) { } @Override public void onAnimationRepeat(Animator animation) { } }); } } } else { //向上滚 if (position == swipeMenuListView.getCount() - 1) { data.remove(position); adapter.notifyDataSetChanged(); } for (int i = position + 1 - swipeMenuListView.getFirstVisiblePosition(); i < swipeMenuListView.getChildCount(); i++) { View itemView = swipeMenuListView.getChildAt(i); ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(itemView, "translationY", -view.getHeight()).setDuration(200); objectAnimator.start(); if (i == swipeMenuListView.getChildCount() - 1) { objectAnimator.addListener(new Animator.AnimatorListener() { @Override public void onAnimationStart(Animator animation) { } @Override public void onAnimationEnd(Animator animation) { data.remove(position); adapter.notifyDataSetChanged(); // 动画结束后，恢复ListView所有子View的属性 for (int i = 0; i < swipeMenuListView.getChildCount(); ++i) { View v = swipeMenuListView.getChildAt(i); v.setAlpha(1f); v.setTranslationY(0); } } @Override public void onAnimationCancel(Animator animation) { } @Override public void onAnimationRepeat(Animator animation) { } }); } } } } private List<String> initData(){ data= new ArrayList<String>(); for(int i=0;i<20;i++){ data.add("哎呀,民咕咕给姑姑咕咕咕咕咕咕咕"+i); } return data; } class MyAdapter extends BaseAdapter{ @Override public int getCount() { return data.size(); } @Override public Object getItem(int position) { return null; } @Override public long get