Android parabola Download Animation production process _android

Download the animation often appears in the download demand many apps, such as Game download platform, application market ...

First look at the effect chart:

Realize

private void Startanim () {  
  //is bitmap to create new ImageView
  iv.setdrawingcacheenabled (true); 
  Bitmap Bitmap = Iv.getdrawingcache ();  
  ImageView logo = new ImageView (this);   
  Logo.setscaletype (ImageView.ScaleType.FIT_XY);   
  Logo.setimagebitmap (bitmap); 
  int[] startlocation = new int[2];  
  Iv.getlocationinwindow (startlocation);   
  End.getlocationinwindow (location_download); 
  Setanim (Logo, startlocation, location_download);
}

Set animation

private void Setanim (final ImageView logo, int[] startlocation,int[] location_download) {ViewGroup animmasklayout = C  
 Reateanimlayout ();
 Animmasklayout.addview (Logo)//To add animation ball to the animation layer/calculation Displacement final View view = addviewtoanimlayout (logo, startlocation);
 Animation displacement of the x coordinate int endY = location_download[1]-startlocation[1];  
 The y-coordinate of the animation displacement translateanimation Translateanimationx = new Translateanimation (0, endx, 0, 0);   
 Translateanimationx.setinterpolator (New Linearinterpolator ());  Translateanimationx.setrepeatcount (0);//The number of times the animation repeats Translateanimationx.setfillafter (true);   
 Translateanimation translateanimationy = new Translateanimation (0, 0, 0, EndY);  
 Translateanimationy.setinterpolator (New Accelerateinterpolator ());  Translateanimationy.setrepeatcount (0);//The number of times the animation repeats Translateanimationx.setfillafter (true); 
 Animationset set = new Animationset (false);  
 Set.setfillafter (FALSE);  
 Set.addanimation (Translateanimationy); 
 Set.addanimation (Translateanimationx);Set.setduration (2000);//Animation Execution Time view.startanimation (set); Animation Listener Event Set.setanimationlistener (new Animation.animationlistener () {//animation start @Override public vo  
   ID Onanimationstart (Animation Animation) {logo.setvisibility (view.visible); @Override public void Onanimationrepeat (Animation Animation) {}//end of animation @Override P  
   ublic void Onanimationend (Animation Animation) {logo.setvisibility (view.gone);
} 
  });
 }

Create an animated parent layout

Private ViewGroup Createanimlayout () {
  ViewGroup Rootview = (viewgroup) GetWindow (). Getdecorview ();    
  LinearLayout animlayout = new LinearLayout (this);    
  Linearlayout.layoutparams LP = new Linearlayout.layoutparams (
    LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);  
  ANIMLAYOUT.SETLAYOUTPARAMS (LP);   
  Animlayout.setid (integer.max_value);  
  Animlayout.setbackgroundresource (Android. r.color.transparent);   
  Rootview.addview (animlayout); 
  return animlayout;
}

Set Animation layout parameters

private static View Addviewtoanimlayout (final view view, int[] location) { 
 int x = location[0]; 
 int y = location[1]; 
 Linearlayout.layoutparams LP = new Linearlayout.layoutparams (n); 
 Lp.leftmargin = x; 
 Lp.topmargin = y; 
 VIEW.SETLAYOUTPARAMS (LP); 
 return view;
}

That's the end of the code, it doesn't look too hard, just try it.

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