The implementation of the animation when the andorid popupwindow is updated allows a window to be pushed up by a window.

Recently, due to project requirements, I have been searching for a pop-up window. When another pop-up window pops up, I cannot find the push effect. After unremitting efforts, finally, the animation of the popupwindow is implemented when it is updated.

First run the Code:

 1 import android.animation.ObjectAnimator; 2 import android.annotation.SuppressLint; 3 import android.content.Context; 4 import android.graphics.drawable.BitmapDrawable; 5 import android.util.AttributeSet; 6 import android.view.LayoutInflater; 7 import android.view.View; 8 import android.widget.PopupWindow; 9 import android.widget.TextView;10 11 public class NotePopWindow extends PopupWindow {12     private TextView mNodeTextView;13     private Context mContext;14     private ViewWrapper mWrapper;15 16     public NotePopWindow(Context context, int width, int height) {17         super(LayoutInflater.from(context).inflate(R.layout.fullscreen_view_note_popwindow, null), width, height);18         mContext = context;19         setBackgroundDrawable(new BitmapDrawable());20         setAnimationStyle(R.style.anim_note_bottombar);21         initViews();22     }23 24     public NotePopWindow(Context context) {25         super(context);26 27     }28 29     public NotePopWindow(Context context, AttributeSet attributeSet) {30         super(context, attributeSet);31     }32 33     private void initViews() {34         mNodeTextView = (TextView) getContentView().findViewById(R.id.note_view);35         mWrapper = new ViewWrapper(getContentView());36     }37 38     @SuppressLint("NewApi")39     public void startUpAnimation() {40         ObjectAnimator translationRight = ObjectAnimator.ofInt(mWrapper, "Y", (int) mContext.getResources()41                 .getDimension(R.dimen.bottom_menu_window_height));42         translationRight.setDuration(540);43         translationRight.start();44     }45 46     @SuppressLint("NewApi")47     public void startDownAnimation() {48         ObjectAnimator translationRight = ObjectAnimator.ofInt(mWrapper, "Y", 0);49         translationRight.setDuration(360);50         translationRight.start();51     }52 53     private class ViewWrapper {54         private View mTarget;55         private boolean isUp = true;56 57         public ViewWrapper(View target) {58             setmTarget(target);59         }60 61         @SuppressWarnings("unused")62         public int getY() {63             if (isUp) {64                 isUp = false;65                 return 0;66 67             } else {68                 isUp = true;69                 return (int) mContext.getResources().getDimension(R.dimen.bottom_menu_window_height);70             }71 72         }73 74         @SuppressWarnings("unused")75         public void setY(int height) {76             update(0, height, -1, -1);77         }78 79         @SuppressWarnings("unused")80         public View getmTarget() {81             return mTarget;82         }83 84         public void setmTarget(View mTarget) {85             this.mTarget = mTarget;86         }87     }88 }

The implementation principle is actually to rely on Attribute animation, but attribute animation can only act on attributes with the set and get methods. The key is to write a packaging class and provide the set and get methods of attributes, call the update method of popwindow in the set method to implement animation during update.

I am not very clear about it. The Code is as above. If you cannot understand it, you can contact me via email or qq...